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This study analyzes the flexural behavior of reinforced geopolymer concrete beams through numerical simulation based on the Finite Element Method (FEM) using ANSYS software, comparing it with conventional reinforced concrete beams. The background of this research focuses on the need for environmentally friendly construction materials, considering the high CO₂ emissions from Portland cement production. The numerical model was developed based on parameters and loading schemes from previous experimental studies, utilizing SOLID65 elements for concrete, LINK180 for steel reinforcement, and SOLID185 for supports. Simulation results show that the flexural behaviour of geopolymer beams is comparable to conventional beams in terms of load-deflection relationships, flexural capacity, and crack patterns, with deviations from experimental data generally below 10%. The patterns and propagation of cracks also exhibited similarities, starting from the tensile zone at mid-span. Furthermore, the analysis demonstrates consistency with the analytical approach based on SNI 2847:2019. This research supports the validity of using geopolymer concrete as a sustainable structural material alternative and shows that the FEM numerical method is effective in evaluating the flexural performance of concrete structural elements.

3D printing technology is rapidly developing and being used in various fields. One of the main factors affecting print quality is the filament, with ABS being a popular material due to its eco-friendliness, ease of printing, and good mechanical strength. To achieve precision, the filament diameter must be consistent, around 1.75 mm or 2.85 mm according to the design nozzle diameter. The production of ABS filament uses a single screw plastic extruder machine, where the material is melted, extruded, and then cooled. Two main factors that affect the final dimensions are the extrusion temperature and the cooling medium. Improper temperature can alter the viscosity of ABS melt, affecting the extrusion rate and diameter accuracy. Meanwhile, differences in cooling media, such as blower air and water, affect material shrinkage and dimensional stability. This research aims to analyze the influence of extrusion temperature variations and cooling media on the diameter of ABS filaments. Through experiments with varying parameters, the pattern of diameter changes will be analyzed to determine the optimal conditions that minimize dimensional deviations. The research results are expected to contribute to the optimization of ABS filament extrusion parameters to support the 3D printing industry with higher quality materials.

Phonological linguistic units are a fascinating and varied research focus. Differences in pronunciation from one speaker to another are caused by the abstract and distinctly different language systems in the human mind. Therefore, it is not surprising that many deviations or anomalies are found in the phonological process. This qualitative research presents examples of phonological anomalies in Indonesian, along with pronunciations that are common but do not conform to Indonesian language rules. Data are drawn from empirical experience during the discovery of related language anomalies. The data sources presented cannot be formulated, but recording techniques and memory skills are necessary to ensure the clarity and authenticity of the information (data). This is also driven by the fact that many phonological anomalies are found in the public sphere, so research data no longer needs to be sought or formulated. Researchers simply bring them into the focus of discussion to be analyzed, tested, and researched. The numerous data found (abbreviation: 9 data, words: 17 data) further strengthen the assumption that problematic Indonesian phenomena have become commonplace and normalized.

Poverty is one of the main problems that hinder regional development. Deli Serdang Regency shows a fluctuating trend in the number of poor people from year to year. To support government policies in overcoming poverty, an accurate forecasting method is needed to predict the number of poor people in the future. This study uses the Single Moving Average (SMA) method with two period variations, namely n = 2 and n = 3, based on data from the Central Statistics Agency (BPS) of Deli Serdang Regency for 2017–2023. The forecasting results show that the SMA method with n = 3 provides better accuracy than n = 2, as indicated by the Mean Squared Error (MSE) value of 21.38, Mean Absolute Deviation (MAD) of 4.44, and Mean Absolute Percentage Error (MAPE) of 3.52%. These findings indicate that the SMA method is capable of providing fairly accurate predictions and can be used as a basis for regional development policy planning to reduce poverty in Deli Serdang Regency in 2024.

This study aims to determine the effectiveness of the use of evaluation sheets based on picture stories on the assessment of student learning outcomes in Natural Sciences (IPA) subjects for grade VII at SMP Hang Tuah 1 Jakarta. This study uses a quantitative descriptive approach involving 154 students from four classes (7A–7D). The evaluation instrument in the form of a short narrative accompanied by visual illustrations and contextual questions was designed based on the basic competencies of grade VII science. The results of the analysis showed that students gave a positive response to the form of evaluation used. Statistically, the average value of student learning outcomes reached 81.52, median 81.79, mode 84, and standard deviation 5.60. A total of 132 students (85.7%) achieved learning outcomes with values ​​above or equal to the Minimum Completion Criteria (KKM), which is 75. This shows that the evaluation sheet based on picture stories is not only effective in measuring learning outcomes, but also helps students understand the material more contextually and enjoyably. Student reflections strengthen these findings, where most stated that evaluation in the form of illustrated stories made them more interested, less tense when working on problems, and easier to understand concepts. Therefore, this approach can be an innovative alternative assessment in science learning.

The Constitutional Court's decision No. 112/PUU-XX/2022, which changed the term of office for the leadership of the Corruption Eradication Commission (KPK) from four years to five years, has sparked controversy in the realm of Indonesian constitutional law. The Constitutional Court, which is supposed to act as a negative legislator, is considered to have exceeded the limits of its authority by establishing new norms in its decision. This research aims to analyze whether the action is a form of deviation of the Constitutional Court's authority referring to the 1945 Constitution and Law Number 24 of 2003 concerning the Constitutional Court. This research uses a normative juridical method with a descriptive-analytical approach through a literature study of regulations, scientific journals, and other legal sources. The research findings indicate that the Constitutional Court not only declared Article 34 paragraph (1) of the KPK Law contrary to the 1945 Constitution, but also stipulated a direct change in the term of office to five years, including for the current KPK leadership. This action is considered a form of judicial activism that deviates from the principle of separation of powers and the principle of non-retroactivity of law. In conclusion, the Constitutional Court's decision creates legal uncertainty, opens space for politicization of the judiciary, and sets a negative precedent in Indonesia's constitutional system. Therefore, it is necessary to reaffirm the limits of the authority of the Constitutional Court in order to remain within the framework of constitutional law that upholds the principle of checks and balances at all times.

This study aims to analyze the application of the legal principle of utility (kemanfaatan hukum) in relation to the inclusion of the phrase Basmallah at the beginning of authentic deeds in Murabahah financing contracts. In notarial practice, it has been found that certain notaries include the phrase “Bismillahirrahmanirrahim” at the beginning of the redaction of Islamic financing deeds. However, the form and structure of authentic deeds are explicitly regulated in Article 38 of the Notary Act (UUJN), which serves as the normative reference for notaries in drafting legally binding deeds. According to Article 1868 of the Indonesian Civil Code (KUHPerdata), an authentic deed is a document drafted in a format prescribed by law, created by or before a public official authorized for such matters, and executed at a place designated by law. Therefore, the inclusion of the Basmallah, which is not stipulated in the formal structure of deeds, may pose legal issues as it can be deemed a deviation from formal requirements, potentially undermining the evidentiary strength of the deed. To ensure both the utility and legal certainty of authentic deeds, it is necessary to reaffirm the formal boundaries as outlined in Article 1869 of the Civil Code, so that deeds drawn up by notaries maintain both formal and substantive legal validity. The scope of this study encompasses three main aspects: First, whether the inclusion of the Basmallah at the beginning of a Murabahah financing deed holds legal authenticity; second, to what extent such inclusion aligns with the principle of legal utility.

This study investigates the impact of tail configuration variations on flight stability and battery energy efficiency in Unmanned Aerial Vehicles (UAVs). Three distinct tail types were tested: the conventional tail, the T-Tail, and the V-Tail. The objective was to compare how these tail designs affected the overall performance of UAVs, especially focusing on the balance between stability and energy efficiency. The experiments were conducted through a series of flight tests in a controlled outdoor environment, providing reliable and accurate data. During these flight tests, several performance metrics were recorded, including IMU-based angular deviations for pitch, roll, and yaw, energy consumption, flight time, voltage, and battery power. The data collected allowed for a thorough analysis of how the tail design influenced the flight characteristics of the UAVs. The results showed that the T-Tail configuration provided the highest flight stability, as indicated by the smallest angular deviations and minimal vibration during flight. This design’s enhanced stability made it the most reliable, especially for missions requiring precision control. In contrast, the V-Tail configuration proved to be the most energy-efficient, consuming only 22.80 Wh. Despite its low energy consumption, the V-Tail showed the lowest stability due to control coupling between the pitch and yaw axes, resulting in higher angular deviations and less precise control. The conventional tail, while not the best in terms of either stability or energy efficiency, struck a reasonable balance between the two. This configuration provided adequate stability while ensuring efficient battery usage, making it a suitable choice for general UAV applications. The findings of this study highlight the direct influence of tail design on UAV performance. There is a clear trade-off between flight stability and energy efficiency, with the conventional tail offering the best compromise.

This study examines the transfer of custody (hadhanah) rights of a non-mumayyiz child to the father, as decided in Judicial Decision No. 1882/Pdt.G/2019/PA.Mdn by the Medan Religious Court. According to Article 105 letter (a) of the Compilation of Islamic Law (KHI), the custody of a child under the age of 12 (non-mumayyiz) is generally granted to the mother. However, in this case, the court ruled otherwise. The focus of this research is to analyze the legal reasoning and judicial considerations behind this deviation from normative provisions. This is a normative legalresearch employing a juridical and conceptual approach. Primary data include statutory provisions and the official court ruling, while secondary data are derived from classical Islamic jurisprudence, modern legal commentaries, and related literature. The analysis uses descriptive-analytical methods to examine the legal basis, fiqh arguments, and the principle of maslahah al-mahdhun (best interests of the child). The findings indicate that the court transferred custody to the father on the grounds that the mother had remarried and was experiencing psychological instability, which could endanger the child’s well-being. The decision was based on Article 156 letter (c) of the KHI, which allows custody to be transferred if the mother fails to guarantee the child’s physical and mental safety. The judge also considered the father's financial capability, emotional stability, and supportive environment as decisive factors in ensuring the child's best interests. This research concludes that child custody in Islamic law is flexible and adaptive, prioritizing the child’s welfare over formal legal entitlements. It also highlights the role of religious court jurisprudence in aligning Islamic legal norms with contemporary social realities.

The manufacturing industry faces major challenges in maintaining consistent product quality amidst the dynamics of technology and global competition. This study aims to develop an effective Business Intelligence (BI) implementation model to support data-based quality control. The method used is a conceptual design approach through integrated system simulation, including MySQL database, PHP backend, Power BI visualization, Google Cloud AutoML predictive analytics, and initial processing using Microsoft Excel. Historical production data for 12 months is used for model training and defect trend visualization. The simulation results show that the implementation of BI can reduce product defect rates, accelerate system response, and increase inspection process efficiency. Technical validation proves the model's prediction accuracy is above 90%, while field validation shows positive acceptance from users regarding the ease of use of the dashboard. This system not only supports early detection of quality deviations but also contributes to real-time strategic decision making. With an integrated technology approach, BI enables medium-sized manufacturing companies to adopt an adaptive and sustainable digital quality system, in line with the concept of Quality 4.0.

Marriage is a universal social institution, yet its implementation is profoundly shaped by distinctive local cultural values. One such cultural manifestation is the Merari’ tradition practiced by the indigenous Sasak community in Central Lombok, West Nusa Tenggara. This tradition refers to the practice of "elopement," which forms an integral part of customary rituals uniting two individuals in marital bonds. This study aims to explore in depth the fundamental reasons why the Sasak people continue to uphold the Merari’ tradition amidst the tides of modernization and the bureaucratization of national marriage law. It also seeks to describe the procedural and normative structure of the Merari’ marriage process from the perspective of customary law. Furthermore, this research investigates the types of customary sanctions imposed when individuals violate the traditional norms of marriage. This study uses a socio-legal approach, which not only examines written legal norms (positive law) but also considers how these norms are applied and function within society, particularly through the practice of Merari’ in the Sasak community. The findings show that the Merari’ tradition is not merely a romanticized relic of the past, but a form of cultural resistance against the dominance of formal law, which is often perceived as inadequate in accommodating local values. The Merari’ process follows a clearly defined sequence—starting from mutual agreement between the couple, the act of elopement, reporting to customary leaders, and culminating in the nyelabar ceremony, which serves as the social ratification of the marriage. In cases of violation or deviation from these customary norms, community elders may impose sanctions such as traditional fines (material penalties), social exclusion, or prohibition from participating in customary events. Based on the analysis, it is concluded that the Merari’ tradition holds legal legitimacy within the framework of customary law, as it is carried out on the basis of social consensus, noble values, and binding communal norms. Its persistence illustrates a dynamic relationship between state law and customary law, wherein both systems can coexist in parallel, provided there is mutual recognition and space for dialogue. Thus, there is an urgent need for an integrative legal approach in the formulation of national legal policies—an approach that is not only normative, but also contextual and responsive to the legal pluralism present in Indonesian society.  

This study aims to analyze the use of italics and capital letters in the novel Hati Suhita by Khilma Anis based on the General Guidelines for Indonesian Spelling (PUEBI). This study uses a qualitative descriptive approach with text analysis techniques on quotations in the novel that contain italics and capital letters. The results of the study indicate that there are various forms of inconsistencies in the use of italics, especially in words in regional languages ​​(Javanese), foreign terms, and non-standard words that are not italicized as they should be. Meanwhile, errors in the use of capital letters were found in the form of inappropriate capitalization of common nouns, greetings, and after punctuation that does not start a new sentence. Of the total data analyzed, more than half of the quotations showed deviations from applicable spelling rules. These errors have an impact on the clarity of meaning, stylistic nuances, and readers' perceptions of the narrative structure. This study emphasizes the importance of spelling accuracy in literary works, not only as a technical aspect, but also as part of the rhetorical and aesthetic power of the text. These findings are expected to be a reference in editing literary works and teaching Indonesian based on spelling.

This study aims to analyze the use of italics and capital letters in the novel Hati Suhita by Khilma Anis based on the General Guidelines for Indonesian Spelling (PUEBI). This study uses a qualitative descriptive approach with text analysis techniques on quotations in the novel that contain italics and capital letters. The results of the study indicate that there are various forms of inconsistencies in the use of italics, especially in words in regional languages ​​(Javanese), foreign terms, and non-standard words that are not italicized as they should be. Meanwhile, errors in the use of capital letters were found in the form of inappropriate capitalization of common nouns, greetings, and after punctuation that does not start a new sentence. Of the total data analyzed, more than half of the quotations showed deviations from applicable spelling rules. These errors have an impact on the clarity of meaning, stylistic nuances, and readers' perceptions of the narrative structure. This study emphasizes the importance of spelling accuracy in literary works, not only as a technical aspect, but also as part of the rhetorical and aesthetic power of the text. These findings are expected to be a reference in editing literary works and teaching Indonesian based on spelling.

This research aims to analyze forms of phonological interference in the use of Indonesian by speakers of the Nias regional language in Garu II, Medan Amplas. The background of this research is based on the fact that the Nias people, as a bilingual group, often experience difficulties in pronouncing Indonesian according to the rules, resulting in symptoms of phonological deviations such as deletions, changes and additions of phonemes. Using qualitative descriptive methods and triangulation techniques (observation, interviews, documentation), this research found three main forms of interference: (1) deletion of the final phoneme (example: "jalan" becomes "jala"), (2) changes in phonemes (example: "kaya" becomes “kayo”), and (3) the addition of phonemes (example: “although” becomes “walampun”). Factors causing interference include the social environment, first language habits, low vocabulary mastery, and weak loyalty to the second language. It is hoped that the results of this research can enrich the study of phonology and become a reference in developing Indonesian for bilingual communities.

The TCS3200 color sensor demonstrates limited accuracy under certain environmental conditions, particularly in relation to the distance between the sensor and the object, as well as the surrounding lighting. This study aims to investigate the effects of distance variation (0 cm, 2 cm, 4 cm, and 6 cm) and lighting conditions (bright and dark) on color detection using the TCS3200 sensor integrated with an Arduino microcontroller. An experimental method was employed, with color data converted into the CIELAB color space and analyzed using Delta E as the deviation indicator. The results indicate that the most accurate color readings occur at a distance of 0 cm, where the sensor receives maximum reflected light. Furthermore, measurements taken under dark conditions exhibit more consistent results compared to those under bright lighting, which tends to introduce optical interference. It can be concluded that the TCS3200 sensor performs best at close range and under controlled lighting conditions to ensure accurate and reliable color detection.

The phenomenon of paid nikah muhallil reflects a serious deviation in public understanding of Islamic teachings on marriage. This practice is carried out to circumvent the prohibition of reconciliation after a triple divorce by engineering a temporary marriage through financial compensation. This study aims to examine paid nikah muhallil from the perspective of the Prophet’s hadiths and the urgency of proper Islamic legal socialization. A qualitative method with a descriptive-analytical and takhrij hadith approach was employed, involving library research of primary and secondary sources. The findings show that the hadiths addressing the prohibition of nikah muhallil are authentic (shahih) and well-known (masyhur), supported by various hadith compilations and scholarly opinions. This practice is explicitly forbidden as it contradicts the objectives of Sharia (maqashid syariah) and undermines the moral and spiritual values of marriage. The implication of this study underscores the importance of structured hadith education and socialization to prevent society from engaging in legal manipulation that harms family integrity and Islamic values.  

The specific minimum sentence in corruption crimes aims to provide a deterrent effect and guarantee legal certainty. However, after the Constitutional Court Decision No. 25/PUU-XIV/2016, there has been a shift in the sentencing paradigm, where judges are given discretionary space to consider substantive justice even though the minimum sentence provisions still apply. This study uses a normative juridical method with a statutory regulatory approach and case studies, and is analyzed using the ASTACITA framework. The results of the study show that the Constitutional Court's decision strengthens the independence of judges but also opens up the potential for disparity in sentencing and legal uncertainty, especially in cases involving justice collaborators. This study emphasizes the importance of a balance between legal certainty and substantive justice, as well as the urgency of national sentencing guidelines to prevent deviations in discretion. ASTACITA is used as a normative basis in measuring the proportionality and accountability of sentencing in the corruption criminal law system in Indonesia.

The This study uses a descriptive statistical approach to analyze the level of student satisfaction with campus facilities at the State Islamic University of North Sumatra. Data were obtained through an online questionnaire using a simple random sampling method with 36 respondents. The questionnaire covered four categories of facilities: general, technology and accessibility, academic support, and campus and infrastructure. The analysis involved calculating percentage, probability, mathematical expectation, variance, and standard deviation. The results showed that library comfort had the highest satisfaction score (expected = 4.06), while the Wi-Fi connection had the lowest score (expected = 3.06, deviation = 1.39), indicating dissatisfaction and an uneven perception. Other aspects, such as academic guidance by lecturers (expectation = 3.86), toilet facilities (expectation = 3.83), and laboratories (expectation = 3.72), showed good satisfaction levels. These findings provide a strong basis for the campus to improve low-scoring areas and maintain areas that meet student expectations.

This research utilizes waste from PLTU Tanjung Jati B Jepara, namely FABA (Fly ash Bottom Ash) as an alternative to fine and coarse aggregate. From this research, the physical properties of faba aggregate can be seen from the results of the faba aggregate sieve analysis test, which obtained a fineness modulus value of 1.74, which is included in the medium aggregate type. The water content of fine aggregate (fly ash) obtained a value of 3.63% and coarse aggregate (bottom ash) obtained a value of 1.5%. The fine aggregate sludge content (fly ash) obtained a value of 0%. The fine aggregate organic substance (fly ash) acquires a reddish brown NaOH color, therefore it must be washed before being used as a concrete mixture. The face dry specific gravity of fine aggregate (fly ash) obtained a value of 2.63 gr/cm2 and coarse aggregate 2.52 gr/cm2. From the data that has been obtained, faba aggregate is considered to have physical properties that meet the requirements for fine aggregate and can be used as a substitute for sand. The results of the final compressive strength of faba concrete and normal concrete at the age of 7 days and 28 days showed that the compressive strength of normal concrete (control) was higher than that of faba concrete. The standard deviation values ​​at the ages of 7 and 28 days are included in perfect working conditions because they have a standard deviation value of less than 3 MPa. From the results of the concrete flexural strength test, only the control concrete was 1;1.5 with a flexural strength of 4.18 MPa, which is close to SNI 2847:2013, namely with a minimum flexural strength of fs = 4.4 MPa. Normal concrete has a higher flexural strength than faba concrete. Based on tests carried out with the planned mix design, the 1:1.5 variation obtained the highest results.

Structural failure in construction projects is a critical issue that not only endangers public safety but also triggers legal consequences for parties involved. This study explores mechanical structural failure from technical, legal, and professional responsibility perspectives. Technically, structural failures are often caused by inadequate planning, poor-quality materials, and improper construction practices. Legally, the Indonesian Construction Services Law (Law No. 2 of 2017) and the Indonesian Criminal Code (KUHP) provide a foundation for holding parties accountable, both civilly and criminally, especially when failures result in significant losses or casualties. The research also discusses the roles and responsibilities of construction consultants and contractors. Consultants are responsible for accurate design and oversight, while contractors must ensure implementation aligns with technical specifications and safety standards. Any negligence or deviation from duties by either party can lead to legal liability. This paper emphasizes the importance of integrating technical diligence with legal compliance to ensure the success and safety of construction projects.