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This study examines the application of double integrals in calculating the volume of cylindrical concrete piles as a basis for estimating material requirements in building foundation structures. The volume calculation was carried out using a double-integral approach in polar coordinates for three pile segments with lengths of 4 m, 3.9 m, and 4 m, each having a diameter of 60 cm. The results were then validated using the standard geometric formula to ensure consistency and mathematical reliability. The obtained concrete volume was subsequently used to estimate material needs based on a 1:1.5:3 mix proportion consisting of cement, sand, and gravel. The findings indicate that double integrals can be effectively applied to generate accurate estimations of both volume and material requirements, supporting logistical planning in construction. This approach also highlights the strong connection between mathematical concepts—particularly multivariable calculus—and practical applications in civil engineering. Furthermore, the study emphasizes that double integrals may serve as a relevant alternative when structural modeling requires deeper analytical exploration or validation beyond conventional geometry. Therefore, the implementation of double integrals not only reinforces theoretical understanding but also enhances precision in evaluating structural components within building foundation planning.

This community service activity aimed to strengthen the capacity of Percik staff and Sobat Anak facilitators through basic sign language training in collaboration with the Sahabat Tuli Salatiga community. Inclusive multicultural education requires educators and facilitators to be able to engage all children, including those with hearing disabilities. The Sobat Anak Program initiated by Percik Salatiga promotes interfaith and multicultural education for children from diverse backgrounds; however communication barriers remain due to facilitators’ limited knowledge of sign language. The community service employed a needs assessment, participatory training sessions, and evaluation using pre-test and post-test analyzed through N-Gain scores. The results show an N-Gain value of 0.79, categorized as high, with an effectiveness level of 78.89%. These findings indicate that basic sign language training is effective in improving participants’ understanding in supporting more inclusive multicultural educational practices. This activity highlights the importance of collaboration between higher educations, civil society organizations and disability communities in advancing the No One Left Behind principle within inclusive education initiatives.

The authority of the Religious Courts in Indonesia has undergone substantial transformation since the enactment of the 1974 Marriage Law, which serves as a foundational milestone in harmonizing the national legal system on family matters. Prior to this legislation, the jurisdiction of the Religious Courts was limited and influenced by legal dualism among customary law, Islamic law, and Western civil law inherited from the colonial period. This article examines how the Marriage Law initiated a shift in the structure and legitimacy of the Religious Courts and how their jurisdictional expansion reached a more comprehensive form through Law No. 7 of 1989 on Religious Courts and its subsequent amendments under Law No. 3 of 2006 and Law No. 50 of 2009. Using a normative juridical approach, this study analyzes statutory regulations, academic literature, and Islamic legal doctrines. The findings show that the Marriage Law provided the initial legal foundation for strengthening the Religious Courts' authority in handling family disputes, which was later expanded significantly to include inheritance, wills, grants, endowments (wakaf), alms (zakat), charitable donations (infaq and sadaqah), and Islamic economic matters during the legal reform era. This transformation not only reinforced the institutional structure of the Religious Courts but also improved access to justice for Muslim communities and supported the integration of Islamic law into Indonesia’s national legal framework. Therefore, the development of the Religious Courts’ authority after the Marriage Law reflects the dynamic modernization of the legal system and the harmonization between religious values and the rule of law in Indonesia.

This community service activity aimed to strengthen the capacity of Percik staff and Sobat Anak facilitators through basic sign language training in collaboration with the Sahabat Tuli Salatiga community. Inclusive multicultural education requires educators and facilitators to be able to engage all children, including those with hearing disabilities. The Sobat Anak Program initiated by Percik Salatiga promotes interfaith and multicultural education for children from diverse backgrounds; however communication barriers remain due to facilitators’ limited knowledge of sign language. The community service employed a needs assessment, participatory training sessions, and evaluation using pre-test and post-test analyzed through N-Gain scores. The results show an N-Gain value of 0.79, categorized as high, with an effectiveness level of 78.89%. These findings indicate that basic sign language training is effective in improving participants’ understanding in supporting more inclusive multicultural educational practices. This activity highlights the importance of collaboration between higher educations, civil society organizations and disability communities in advancing the No One Left Behind principle within inclusive education initiatives.

The rapid development of digital technology has significantly transformed financial transactions in Indonesia, particularly through the growing use of e-wallets as practical and efficient payment tools. In a country with a Muslim-majority population, ensuring that e-wallet services comply with Islamic principles—free from riba, gharar, and maysir—is essential. This study aims to analyze Indonesia’s legal politics in regulating the use of e-wallets within the Islamic financial system and to assess their alignment with sharia principles. This research employs a normative juridical method with a qualitative descriptive approach by examining laws, regulations, and fatwas related to sharia-based fintech. The findings indicate that the Indonesian regulatory framework—through the OJK, Bank Indonesia, and DSN-MUI—has attempted to harmonize policies to support sharia-compliant digital financial services. However, several challenges remain, including limited e-wallet platforms with sharia certification, low digital sharia literacy among users, and the absence of detailed technical regulations specific to sharia e-wallet operations. This study recommends strengthening regulatory guidelines, increasing public literacy, and enhancing collaboration between regulators and the fintech industry to promote the development of sharia-compliant e-wallets that are secure, innovative, and aligned with Islamic financial principles.

Background: Transnational crime has become increasingly complex and has wide-ranging impacts on victims, while existing legal systems still demonstrate fragmentation between criminal and civil law and remain inadequate in providing effective victim protection and recovery. Research objective: This study aims to analyze and strengthen victim protection in transnational crime through a restorative justice approach, with a particular emphasis on harmonizing criminal and civil legal mechanisms. Method: This study employs a socio-legal approach that integrates normative legal analysis with empirical methods, including case studies, comparative analysis across jurisdictions, and interviews with legal practitioners and non-governmental organizations. Results: The findings indicate that victim protection is hindered by weak restitution enforcement, complex compensation procedures, limited institutional coordination, and cross-border legal barriers. In addition, the implementation of restorative justice in the context of transnational crime remains limited due to the lack of integration within formal legal systems. Therefore, an integrative approach combining criminal law, civil law, and restorative justice is necessary to establish a more comprehensive, effective, and victim-oriented system of protection.

Background: Criminal justice reform has become a crucial global issue in maintaining the balance between the protection of individual rights and state authority, particularly amid the increasing complexity of law enforcement and the risk of abuse of power. Objective: This study aims to analyze the relationship between the principles of due process of law, legal accountability, and the rule of law within criminal justice systems, as well as to compare their implementation in common law and civil law systems. Methods: This research employs a normative and comparative approach through the analysis of legal regulations, criminal justice practices, case studies of procedural violations, and cross-country comparisons, supported by interviews with academics and legal practitioners. Results: The findings indicate that although the principles of due process, legal accountability, and the rule of law are widely recognized, their implementation still faces significant challenges, including weak oversight, procedural inconsistencies, and limited institutional capacity. The comparative analysis also reveals a growing convergence between common law and civil law systems in adopting human rights-based standards, despite differences in procedural approaches. This study concludes that the holistic integration of these three principles is essential to establish a fair, transparent, and accountable criminal justice system.

Background: The rapid development of blockchain technology and smart contracts has fundamentally transformed contractual relationships by shifting the role of human interpretation and enforcement toward automated, code-based, and decentralized systems. This transformation generates complex legal implications, particularly regarding the evolution of contractual liability, which is increasingly distributed and no longer centered on a single legal subject. Objective: This study aims to analyze the evolution of contractual liability in smart agreements and examine how such transformation affects the fundamental principles of traditional contract law within modern legal systems. Methods: This research employs a normative and conceptual legal approach, supported by an analysis of blockchain regulations across multiple jurisdictions, case studies of smart contract implementation, and a comparative legal analysis between civil law and common law systems, complemented by a multidisciplinary literature review. Results: The findings indicate that contractual liability in smart agreements has evolved from a centralized fault-based liability model to an algorithmic, distributed, and code-dependent liability structure within blockchain ecosystems. This evolution creates new legal challenges concerning the attribution of liability, legal certainty, and the limitation of judicial intervention in automated contractual arrangements. Furthermore, the study identifies a tension between technological efficiency and substantive legal justice, highlighting the need for adaptive legal frameworks capable of accommodating decentralized technologies while ensuring the protection of legal rights and accountability of involved parties.

This research aims to normatively analyze the role and implementation of public participation in the legislative process, specifically concerning the formation of the Indonesian National Armed Forces (TNI) Law. Public participation is an essential principle in a democratic state, ensuring the legitimacy, transparency, and accountability of legal products. This normative review focuses on the legal framework governing community participation in law making, as mandated by the 1945 Constitution of the Republic of Indonesia and related regulations. The analysis reveals a gap between the ideal normative principle of meaningful participation and the empirical practice in the legislation of the TNI Law. Legislative processes involving the defense and security sector are often overshadowed by issues of secrecy and limited information accessibility, thereby impeding substantial public participation. It is necessary to strengthen the regulatory framework and establish more open, inclusive, and continuous mechanisms to ensure that public aspirations and interests, including those of civil society groups and academics, are adequately considered at every stage of law formation, especially for strategic legislation like the TNI Law.

The pluralistic development of Indonesian national law creates a dynamic relationship between national civil law and customary law, including in the context of resolving inheritance disputes in Chinese families who adhere to patrilineal traditions. Supreme Court Decision No. 1204 K/Pdt/2024 shows that there is a tension between legal certainty under the Civil Code and substantive justice originating from living law. This research aims to analyze the judge's interpretation of family documents as a basis for inheritance rejection, inheritance sharing mechanisms that ignore Chinese customary norms, and their implications for legal pluralism in Indonesia. The method used is normative juridical with a case study approach and a descriptive-analytical legislative approach, using literature studies of primary, secondary and tertiary legal materials. The results showed that the ruling applied neither the Civil Code nor the principle of Chinese customary inheritance consistently. The family declaration on which the judge relied was not actually a refusal of inheritance, but an internal agreement granting authority to the testator. Moreover, the distribution of inheritance carried out is not in accordance with the principle of patrilineal custom which places the eldest son as the recipient of the largest share. This finding shows the weak application of legal pluralism (weak legal pluralism) and reveals the gap between das sollen and das sein, so it is necessary to strengthen the role of judges in exploring the traditional values that live in society.

This study explores how the drafting process of the Bill (RUU) for the Revision of the Indonesian National Armed Forces (TNI), which was approved to become Law Number 3 of 2025, occurred amidst massive public protests, with an emphasis on violations of the principles of openness, participation, and accountability as regulated in the 1945 Constitution and Law Number 12 of 2011 concerning the Formation of Legislative Regulations. The public's rejection illustrates the potential for abusive law making, threats to civilian dominance, and the possibility of a return to the dual function of the military from the New Order period, supported by protests, petitions from civil society organizations such as NU, WALHI, and KONTRAS, as well as an application for constitutional review to the Constitutional Court. Adopting the perspective of Habermas’s theory of deliberative democracy and Weber’s concept of legitimacy, this research asserts that the argument for the annulment of this Bill is growing stronger, in order to uphold democratic law making and the protection of human rights.

The development of information technology has given rise to a new form of business transaction: the electronic contract. This contract form replaces the traditional process that requires a physical meeting between the parties. However, questions arise regarding the validity of e-contracts from the perspective of Indonesian civil law, specifically based on Article 1320 of the Indonesian Civil Code (KUHPerdata) and the provisions of Law Number 11 of 2008 concerning Electronic Information and Transactions (UU ITE). This research aims to analyze the validity of electronic contracts as legally binding agreements and to assess the extent to which the ITE Law can serve as their legal basis. Using a normative juridical legal research method, the research results show that e-contracts are valid and binding as long as they meet the requirements for the validity of an agreement under Article 1320 of the Civil Code, namely consent, capacity, a specific object, and a lawful cause. The ITE Law expands the recognition of electronic evidence and digital signatures as valid evidence in civil law. Thus, electronic contracts have the same legal force as conventional contracts, as long as they meet the principles of free will and the integrity of a reliable electronic system.

This study examines the effectiveness of national legislative strategies in promoting corporate accountability for industrial pollution and social justice violations. It analyzes a comparative legal framework, focusing on laws, enforcement mechanisms, and corporate liability regimes in countries such as France, Germany, Norway, China, and Australia. The research evaluates how mandatory due diligence laws, judicial measures, and transparency mechanisms help hold corporations accountable for environmental impacts. It compares voluntary compliance models with mandatory legal frameworks, noting the limitations of voluntary agreements in driving substantial environmental changes. Findings show that countries with strong legal frameworks, like the EU and Australia, achieve higher corporate compliance and environmental performance, while voluntary measures struggle to produce meaningful results. The study emphasizes the need for stronger enforcement, higher penalties for violations, and enhanced public transparency. Additionally, it explores integrating environmental justice considerations, such as community participation and fair compensation, into national strategies. The study offers policy recommendations for improving corporate responsibility through better legislation, harmonizing laws across jurisdictions, and fostering collaboration among governments, corporations, and civil society. It also suggests future research directions, including examining the long-term impacts of environmental justice policies in different global contexts.

Background: The rapid development of financial technology and the increasing volume of cross-border transactions have led to the emergence of increasingly complex digital financial crimes, involving anonymous actors and exploiting regulatory gaps and jurisdictional differences. This condition poses serious challenges to legal systems, particularly in terms of digital evidence, the attribution of legal liability, and the effectiveness of cross-border law enforcement. Objective: This study aims to reconstruct the framework of civil and criminal liability in digital fraud cases to make it more adaptive, integrated, and responsive to technological developments. Method: The research employs a qualitative socio-legal approach, combining normative analysis of cybercrime regulations, case studies of international digital fraud, comparative analysis of legal systems across countries, and interviews with legal practitioners and fintech regulators. Results: The findings reveal significant legal gaps, regulatory fragmentation across jurisdictions, and weaknesses in electronic evidence systems that hinder effective law enforcement. Additionally, the complexity of actors and technologies within digital ecosystems complicates the accurate attribution of legal responsibility. Therefore, an integrated legal framework is required, incorporating both civil and criminal liability, international regulatory harmonization, and the utilization of technology to enhance law enforcement effectiveness.

In accordance with Article 25 paragraph (2) of the Law on Judicial Power, the general judiciary is one part of the judicial power that has the authority to examine, adjudicate, and issue decisions in criminal and civil cases in accordance with the applicable regulations. In civil trial proceedings at the district court, there are three stages: the preliminary stage, the determination stage, and the execution stage. In civil justice, there is an effort to resolve disputes outside of trial, namely mediation, and in administrative court proceedings, there is an effort to resolve disputes outside the court, namely administrative efforts. Mediation is an effort to resolve conflicts through deliberation with the assistance of a neutral third party, known as a mediator, to reach an agreement that can be accepted by both parties. This administrative effort is a resolution process carried out internally within an agency between the government and the party filing an objection to a state administrative decision before the dispute is brought to court. The purpose of this study is to understand the differences in non-litigation efforts between civil courts and state administrative courts. The research method is normative, using a statutory approach that emphasizes the analysis of regulations related to the main discussion of this study. In civil courts, mediation aims and focuses more on efficiency, which benefits both parties and, in turn, can reduce the burden on judges in resolving disputes in court. On the other hand, the purpose of administrative measures in state administrative cases is oriented towards internal government supervision, as a last resort, and rapid correction.

In social life, buying and selling are fundamental mechanisms for transferring rights, beginning with an agreement. According to Articles 1313 and 1338 of the Indonesian Civil Code, agreements are legally binding acts with the force of law for the parties involved. One high-value transaction is the sale and purchase of apartment units, which involves developers as sellers. In practice, developers often fail to deliver units within the agreed timeframe. This study examines (1) the developer’s responsibility toward buyers when units are not delivered and (2) the legal protection available for buyers under such circumstances. The research applies Hans Kelsen’s Theory of Responsibility and Satjipto Rahardjo’s Theory of Legal Protection, using a normative juridical method based on library research. Primary, secondary, and tertiary legal materials were analyzed through statutory, conceptual, analytical, and case approaches, employing grammatical and systematic interpretation, legal analogy, and legal refinement. Findings reveal that developers are primarily responsible for delivering fully paid units. Failure to fulfill this obligation, due to breach of contract or negligence, triggers legal liability in the form of performance or compensation. Legal protection for buyers ensures their rights are safeguarded, and even in cases of developer negligence or bankruptcy, consumers are legally entitled to receive the apartment units they have purchased.

This study aims to examine the analysis of unilateral contract termination. The method used in this study is normative juridical. The approaches used in this study are the statutory approach and the conceptual approach. The results of this study indicate that the provisions for contract termination as stipulated in Article 1338 paragraph (2) of the Civil Code should not override the provisions of Article 1266 of the Civil Code, which governs the conditions for annulment in reciprocal agreements. Termination clauses in contracts are generally unilateral, disregarding the provisions of Article 1266 of the Civil Code. The Civil Code does not explicitly regulate the distinction between damages resulting from breach of contract and damages resulting from unlawful acts. Therefore, what is needed is a clear understanding of the concept of contract termination, so that in the future there will be regulations that provide legal certainty to the parties involved.

The purpose of this study is to analyze the settlement of criminal cases on the liability of parents for negligence that results in minors becoming perpetrators of traffic accidents. This type of research is normative legal research with a statutory approach, a case approach and a conceptual approach. The analysis used in this study is a descriptive analysis. has not explicitly regulated the criminal liability of parents for accidents committed by children, although Civil Code Article 1367 has provided a basis for civil liability, and the new Criminal Code through Article 37 opens up opportunities for the application of the principle of vicarious liability. This study recommends the need to reconstruct the Indonesian criminal law regulation which explicitly establishes a model of parental criminal responsibility based on the principle of vicarious liability and the principle of Radbruch legal certainty, without overriding the principle of child protection in the SPPA Law.

Indonesia’s civil dispute resolution system remains dominated by an adversarial litigation model that prioritizes legal certainty but often neglects the relational and emotional dimensions underlying conflicts. Yet, in many cases such as family, inheritance, or neighborhood disputes the restoration of social relationships is as crucial as formal legal resolution. This study explores the potential integration of restorative justice principles into Indonesia’s civil procedural law as an alternative approach centered on dialogue, accountability, and reconciliation. Employing a normative-juridical approach and qualitative analysis of primary and secondary legal sources, the research finds that restorative justice values align not only with Indonesia’s living law traditions such as musyawarah (deliberative consensus) and customary dispute resolution but also with existing provisions in civil procedure codes. Accordingly, the study proposes the Structured Restorative Mediation (SRM) Model, a procedural framework that embeds restorative principles into both court-annexed and community-based mediation. This model prioritizes relational healing while upholding legal certainty and procedural fairness. Its successful implementation requires regulatory support, enhanced mediator training, and institutional strengthening of community-based dispute resolution bodies. Thus, integrating restorative justice is not merely an innovation but a structural necessity for a more humane, inclusive, and holistically just legal system.

The development of electronic commerce through marketplace platforms presents new challenges in civil law enforcement, particularly concerning the platform's liability for the circulation of counterfeit goods. This study aims to analyze Shopee's legal responsibility as a provider of electronic transaction services regarding the sale of counterfeit goods, based on Article 1365 of the Civil Code concerning Unlawful Acts and its relation to consumer protection principles as regulated in the Republic of Indonesia Law Number 8 of 1999 concerning Consumer Protection. The research uses a normative juridical method with a legislative approach and literature study, including provisions in the Law on Electronic Information and Transactions and Government Regulation Number 71 of 2019 on the Implementation of Electronic Systems and Transactions. The research findings indicate that although Shopee does not act as a direct seller, the platform still has a legal obligation to provide a reliable, secure, and responsible electronic system. Negligence in verifying sellers and monitoring products has the potential to fulfill the elements of unlawful acts, particularly the elements of fault and causal relationship with consumer losses. This study emphasizes that Shopee qualifies as a business actor in the context of consumer protection, thereby bearing both preventive and repressive responsibilities to ensure transaction security and prevent the circulation of counterfeit goods on its platform.