Abstract. The development of cities that adopt smart is very much around the world, many cities in the world have developed the concept of a smart city in all aspects of life from identity to law enforcement systems in the traffic sector, smart cities have begun to be implemented in the city of Jakarta from 2000 onwards, Starting from the online payment system to the use of CCTV in law enforcement in the city of Jakarta, almost all aspects of government have used the system, from absences to public service applications, in this study using the literature review method, by studying many previous studies in order to deepen research that is is being carried out and finding renewable research problems, this research will produce a proposed system that can be used in the future as a concept for the development of a smart city Jakarta, with the proposed system as renewable research from existing research.

This research aims to develop a valid and reliable assessment instrument for measuring students' Higher Order Thinking Skills (HOTS) in environmental education learning. The study follows a research and development design, adapted from the development model proposed by Borg and Gall. The researcher modified the original model into several stages, including (1) gathering information, (2) making a plan, (3) preparing the product form, (4) conducting revisions of the initial product, and (5) implementing the final product. The trial subjects for this research consisted of 34 graduate students enrolled in the Population and Environmental Education Study Program at Jakarta State University. Data collection involved administering a test comprising 20 multiple-choice items related to environmental education learning, specifically focusing on HOTS. The QUEST program was utilized to analyze the collected data, examining the validity, reliability, difficulty level, and question differentiator of the assessment instrument. The results of this research demonstrate the successful development of a feasible assessment instrument for measuring graduate students' HOTS. The instrument exhibits high validity and reliability, ensuring that it accurately measures the targeted higher-order thinking skills. Moreover, the difficulty level and question differentiator of the items are well-balanced, allowing for effective differentiation among students' thinking abilities. This assessment instrument holds significant potential as an alternative tool for evaluating graduate students' HOTS in environmental education learning. It provides educators with a reliable means to assess and monitor students' higher-order thinking abilities, enabling the identification of areas that require further development. By incorporating this instrument into the assessment process, educators can facilitate the cultivation of critical thinking, problem-solving, and creativity skills among graduate students.

The City of Solo (Surakarta) establishes itself as the City of Culture. The City of Solo as a City of Culture cannot be separated from the existence of the Solo Palace. The Solo Palace was built in 1755 by King Sunan Pakubuwono II with the palace area which eventually developed into the City of Solo. The Solo Palace area can be seen through the signs of the existence of the gate in several places. The gate is not only a sign of the boundaries of the palace territory, but the gate has cultural messages, behavior, strata levels and in the form of the gate itself it is loaded with messages of meaning as a communication of the king's policies with his people. This research is an interpretation research with a semiological approach using Barthes' theory. Interpretation is done by cultural contextual correlation. This semiological approach with contextual correlation of community culture is termed by the author as an ethnosemiological study. The results of the interpretation of the forms at the gate of the Solo Palace show that these forms contain very wise meanings and messages and are teachings of virtue, messages of governance and leadership of power. Messages through the symbols of shapes at the gates of the Solo Palace have existed since the mid-17th century, while the development of semiology theory only occurred in the 19th century. This proves that the Solo Palace Founders had implemented semiology theory before the theory was born. The results of the interpretation of the forms at the gate of the Solo Palace show that these forms contain very wise meanings and messages and are teachings of virtue, messages of governance and leadership of power. Messages through the symbols of shapes at the gates of the Solo Palace have existed since the mid-17th century, while the development of semiology theory only occurred in the 19th century. This proves that the Solo Palace Founders had implemented semiology theory before the theory was born. The results of the interpretation of the forms at the gate of the Solo Palace show that these forms contain very wise meanings and messages and are teachings of virtue, messages of governance and leadership of power. Messages through the symbols of shapes at the gates of the Solo Palace have existed since the mid-17th century, while the development of semiology theory only occurred in the 19th century. This proves that the Solo Palace Founders had implemented semiology theory before the theory was born.

Human life in the natural world could not live alone. To achieve the goal of living together, the man will always interact with each other in society. Communication and information to be very important in communicating. Communication in the community can be done both verbally and non-verbally. Communication in non-verbal considered more timeless than verbal communication. One of the non-verbal communication which is carried out by the public is in the form of a building. Solo is a work of architecture that has a message non-verbal information from the king to his people. One part of the building of the Palace Solo that has the message information is on the door of the gate of the Kori Apit. With the method of approach to the interpretation of the shape of the marks found on the door of the gate of the Kori Flank and linked with the culture of the people of Java, then obtained the meaning of the information message that is very wise of the king that is delivered to his people.

Several urban experts and some humanists from various cities complain that the development of metropolitan area construction in Indonesia nowadays are regressing the self-identity of the city itself. This paper is specifically discoursing on the model of construction and development of urban significance in quest of finding city branding in urban development. The goals of city branding itself is in finding a vision of city development that has its own identity, character, and sustainability in accordance with its uniqueness. Finally, each city has an identity that can upsurge tourist visits to the city and are able to improve the welfare of the city.