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Air quality in the Special Capital Region of Jakarta has shown a concerning decline in recent years, largely due to high emissions from motor vehicles as the main source of pollution in urban areas. The Provincial Government of DKI Jakarta issued Governor Regulation Number 66 of 2020 concerning Exhaust Emission Testing for Motor Vehicles as a public policy instrument aimed at controlling air pollution. This study aims to analyze the implementation of the regulation from a public policy perspective and to identify supporting and inhibiting factors in its execution. The research employs a normative juridical method with statutory and conceptual approaches, supported by qualitative analysis of policy documents and reports on the implementation of emission testing. The results reveal that the implementation of the regulation has not been optimal due to limited emission testing infrastructure, low levels of public awareness and socialization, and inconsistent enforcement of administrative sanctions. Nevertheless, there are opportunities to improve policy effectiveness through strengthened inter-agency coordination, digitalization of monitoring systems, and increased environmental literacy among the public. Therefore, the success of emission control policy implementation is highly dependent on resource support, regulatory consistency, and community awareness, necessitating a comprehensive and continuous multi-stakeholder improvement strategy and stronger commitment.

Guardianship has an important role in supervising minors, including the management of their parents' inherited property as stipulated in Article 51 paragraph (3) of the Marriage Law. However, the practice shows that there is an abuse of authority by the guardian, who controls and even transfers inheritance not for the benefit of the child. This research aims to examine the legal consequences of the transfer of the inheritance of minors to guardians as well as the forms of legal protection available, with a case study of the Banten High Court Decision Number 89/Pdt/2015/PT BTN. The method used is normative legal research with legislative, conceptual, analytical, and case approaches, and uses legal consequences theory from R. Soeroso and legal protection theory from Satjipto Rahardjo. The results of the study show that the control of property by the guardian can cause the loss or escape of the child's inheritance, especially if there is no strict supervision and regulation. Therefore, it is necessary to affirm the legal status of children's inheritances, regulate the authority of guardians more strictly, and apply effective legal sanctions to prevent abuse. The litigation route is an important instrument in legal protection so that children can regain their rights fairly. This research contributes to strengthening the guardianship legal system in Indonesia, especially in the context of protecting children's rights to inheritance.

One example of a case of falsified documents in the issuance of overlapping land certificates occurred in East Luwu Regency and was raised in court through Decision Number 90/Pid.B/2020/PN MII. In this case, it was discovered that land certificate falsification was carried out by a land mafia, resulting in the emergence of two certificates for the same plot of land. This practice not only harms the legitimate owner but also creates laws and gives rise to complex agrarian conflicts. This research uses a normative juridical method, with an approach based on laws and court decisions. The results show that the preservation was an intentional act carried out by one party, with the aim of controlling land rights that did not belong to him. In the decision, the perpetrator was found guilty and sentenced because it was also proven to have falsified documents, as stipulated in Article 263 of the Criminal Code (KUHP). From this case, it can be concluded that law enforcement against overlapping duplicate certificates is very important to ensure legal certainty and protection. Protection efforts for land rights holders are carried out through a land registration process that complies with procedures based on Law Number 5 of 1960 concerning the Principles of Agrarian Law. Compliance with these procedures can provide a strong basis for identifying legitimate rights holders and preventing future damage, including cases of overlapping certificates caused by document falsification. To prevent the recurrence of similar cases, it is necessary to improve the monitoring system and digitize land data comprehensively by the National Land Agency (BPN). An integrated digital-based land system can minimize the opportunity for the issuance of duplicate certificates for a single plot of land, because all land rights data can be accessed and disclosed transparently and in real time.

Indonesia is a unitary state comprised of thousands of islands and vast seas. Land is a vital asset for both the people and the state; therefore, its control, use, and preservation must be regulated fairly to prevent misuse, particularly by foreign parties. This study focuses on the extent to which the limitations on land ownership by foreign nationals (FNs), as established by national law, can be effectively applied in cases occurring beyond Indonesia's jurisdiction.The aim of this research is to examine how the principle of lex rei sitae, the doctrine of cross-border inheritance law, and the concept of ordre public in Indonesian law interact with one another in order to formulate legal policies that uphold agrarian justice and national sovereignty, while also adapting to global changes. The findings of this study reveal that the principles of lex rei sitae and ordre public serve not merely as grounds for legal rejection, but as fundamental pillars in shaping land ownership policies for foreign nationals based on fairness, proportionality, and sustainability. By implementing a legal system that is firm, consistent, yet flexible, Indonesia is able to safeguard its national sovereignty while also fostering international trust as a rule-of-law state capable of facing global challenges without losing its national identity.

The enforcement of fair and transparent justice requires a firm guarantee of the principles of fair trial and open justice within the judicial system. These two principles are fundamental to the protection of human rights and serve as essential mechanisms to ensure the accountability of judges as executors of judicial power. This study aims to analyze the implementation of fair trial and open justice principles in judicial oversight practices through the instruments of legal memorandum and public examination (eksaminasi). This research employs a normative method with a statutory and document-based approach. The findings indicate that although not formally regulated as part of Indonesia’s judicial oversight system, legal memoranda and examinations play a significant role in enabling public participation and control over judicial independence and integrity. Strengthening these instruments can serve as an effective strategy to realize an accountable, transparent judiciary that upholds procedural justice.

This research analyzes the authority of local governments in ensuring aviation safety and security through the regulation of the Airport Operation Safety Zone (Kawasan Keselamatan Operasi Penerbangan/KKOP) and spatial control around airports in Indonesia. The study employs a normative juridical method by examining statutory regulations, international standards from the International Civil Aviation Organization (ICAO), as well as relevant cases in Ahmad Yani Airport Semarang, Mutiara Sis Al Jufri Airport Palu, and Supadio Airport Pontianak. The results show that the authority of local governments is strategic but not absolute; it must be harmonized with national policies and international standards. In practice, the implementation is hampered by normative and practical challenges. Normative barriers include fragmented regulations, weak regional legal instruments, and the lack of incorporation of ICAO standards into local regulations. Implementation barriers involve limited technical capacity, insufficient resources, weak supervision, and socio-economic resistance related to land use around airports. These conditions result in ineffective spatial control, which directly affects aviation safety and airport development. The study suggests strengthening local regulations through specific bylaws on KKOP that align with national and international standards, improving the technical capacity of local apparatus, integrating obstacle registry systems, and establishing compensation or relocation mechanisms for affected communities. Cross-sectoral coordination between central government, local government, airport authorities, and stakeholders is also essential to ensure consistent policy implementation. This research contributes to the development of aviation law, regional autonomy, and the improvement of public safety in Indonesia.

White collar crime is increasingly prevalent in various corporate sectors and causes significant financial losses and damage to public trust. This type of crime includes embezzlement of funds, manipulation of financial statements, bribery, insider trading in the capital market, and theft of customer personal data. Although it occurs a lot, the prevention of white collar crime is still not optimal and the perpetrators are rarely prosecuted properly. This paper aims to analyze the various determinants that influence the occurrence of white collar crime in order to formulate policy recommendations and prevention strategies in the future. A systematic approach is used by applying the fraud triangle theory which focuses on the three main elements that cause fraud, namely pressure, opportunity and rationalization. The results of the study show that pressure to meet high performance targets and large bonuses often encourage individuals to commit fraud. Meanwhile, weak supervision and lack of transparency create opportunities for fraud. Perpetrators also often justify their actions, for example by assuming that they will not be caught or the value of the loss is small. The complexity of modern corporate operations also increases opportunities for white-collar crime. Effective prevention efforts must be comprehensive by involving various parties and strengthening a number of aspects as controls. The role of internal and external supervisors (auditors) of companies needs to be continuously improved, supported by modem fraud detection technology tools. Whistleblowing mechanisms need to be strengthened in every company and kept confidential to encourage early reporting of fraud indications.