Background: The e-commerce industry in Indonesia has experienced extraordinary growth in recent years.  The rapid growth of e-commerce then gave birth to e-commerce in the form of a travel agent service called Traveloka.  Currently, the tagline #DontWorryNoLoss is the latest benefit offered by Traveloka to its consumers.  The #DontWorryNoLoss campaign by Traveloka on Instagram is aimed at getting the target audience interested in buying their products online, which in this context is travel agent services through their application or website.  Purpose: This research aims to examine the influence of the #DontWorryNoLoss campaign on the Traveloka Instagram account on online purchase intention.  The background to this problem is the rapid growth of e-commerce and the role of social media in product promotion.  The problem formulation focuses on how attitude toward the behavior, subjective norms, and perceived behavioral control influence consumer purchasing intentions.  The theory used in this research is the Theory of Planned Behavior developed by Ajzen (1991).  The aim of the research is to determine the significant influence of these three variables on the online purchase intention of Instagram followers @traveloka.id.  Method: The research method used was an explanatory survey by distributing questionnaires to 81 respondents.  Results: The results of this research show that there is a positive and significant influence of the #DontWorryNoLoss campaign on the online purchase intention of @traveloka.id followers.

Police Sector (Polsek) is one of the agencies that provide protection, order and ensure public safety in the sunggal area. The number of cases of criminal acts that occur makes residents feel unsafe and always feel threatened in certain areas in the Sunggal sub-district, the pattern of criminal acts that often occur due to several factors, one of which is due to the lack of security in the area so that many criminal acts occur as well as behaviour that has been planned by the perpetrator to achieve their goals by planning, preparing, implementing, disposing of evidence, even hiding or escaping depending on the type of crime committed based on the characteristics of the perpetrator, and the situation or context in which the crime occurred. Therefore, it is necessary to analyse techniques from existing criminal data using the a priori algorithm method to find patterns of relationships between variables that can assist agencies in taking action for public safety. Based on the research conducted, the above case is tested with a minimum support = 10%, confidence = 100% so that the results of the rule that meets the support and confidence values are obtained: ‘If the criminal act is theft then the job is self-employed’, then giving value is successful with 15% support, 100% confidence. And ‘If the age of 17-25 years, the criminal act is Theft then the job is unemployed’, then giving value is successful with 10% support, 100% confidence.

In the practice of independent doctors, patient registration is still done manually, so they have to come first because it takes longer, in addition, doctors cannot find out the disease experienced early and the follow-up actions that need to be taken. This study aims to make it easier for patients to register online, consult online, screen online, and have new features that make it easier for patients to access their conditions. The method used is the prototype method which is useful for designing and knowing the interaction between the system and the user, to be implemented by programmers. The results of this study are the design of an independent doctor's information system which includes a database design. The design of this independent doctor's information system can make it easier for patients to register online, consult online which can be given a prescription and redeemed at the nearest pharmacy, and more complete feature updates.

Respiratory tract disease is a common condition that can affect anyone regardless of age. Starting from relatively mild symptoms to alarming symptoms. Although some respiratory diseases are not life-threatening, they should not be taken lightly as they can cause serious complications. What often happens is that it is difficult for a patient to see a specialist doctor because of the limited number of respiratory specialists who cannot fully serve patients, so people often have difficulty if they want to consult directly. This triggers the habit of the community to treat complaints on their own with simple drugs bought freely at drugstores or pharmacies without knowing for sure the disease they suffer, as well as the length of waiting for queues, consultation fees that are quite expensive and not everyone has a short distance to the hospital prefer not to go to a specialist. Like other organs of the human body, breathing is also prone to various diseases. Respiratory organs will be disrupted and can even cause death. By using the Naïve Bayes method above, it is known that the diagnosis of respiratory disease is that the young female patient is diagnosed with a type of respiratory disease called Farangitis (P05) with a percentage of 47.44%.

Cases of biological food poisoning can be caused by several causative factors, one of which is a food processing site that does not meet health requirements. According to the BPOM report (2016) cases of food poisoning in Indonesia in 2016 reached 1,068 cases. In 2016, 60 extraordinary events (KLB) of food poisoning were reported by 31 BB/BPOM throughout Indonesia. From the many cases of food poisoning that occur, it is necessary to take action in prevention by processing data on existing cases of poisoning to follow up on existing problems to reduce the number of cases of food poisoning by using a system on a computer so that the managed data can be processed quickly to obtain further information. Therefore the author wants to use a system with the clustering method to assist in processing data on biological poisoning cases grouping objects based on the characteristics of each object. Based on the research conducted, it can be seen that in cluster 2 in the dasta group of biological poisoning cases there are 11 data with centroid point age (x) 2, namely 12-16 years, centroid point on the type of poisoning (y) 6.36, namely sandwiches, and centroid point on the causative factor (z) 2.9, namely Gram-negative rod-shaped bacteria which are usually found in the intestines of humans and warm-blooded animals.

In a train ticket booking also has an obstacle, to overcome the obstacles found in conventional ticket booking such as piling up queues at the station, limited time owned by consumers, the process of delivering information about ticket prices for the day of departure or the previous date that cannot be processed, then PT Kereta Api (Persero) Palembang provides solutions through applications that will be made to facilitate ticket booking, Fast transaction process, delivery of information about schedules and ticket prices that can be accessed quickly. In designing this system using a method, namely the Prototype method.

Cats are one of the beloved animals that require care and development. As beloved animals, cats have their own charm thanks to their different body shapes, eyes and fur colors. Cats whose pedigrees are officially registered as purebred cats. Cats, in Latin Felis silvestris catus, are a type of carnivore. The word cat usually means a domesticated cat but can also refer to large cats such as lions, tigers and leopards. Cats have been mixed with human life for at least 6000 years BC, since cat skeletons were discovered on the island of Cyprus (Arquitectura et al., 2015).  One of the diseases that often appears in cats is feline lower urinary tract disease (FLUTD), also known as feline urological syndrome (FUS), which is a health problem that often occurs in cats, especially male cats. This health problem attacks the cat's bladder and urethra. Urethral disorders are caused by the structure of the male cat's urethra, which is tube-shaped and has a narrow section, which often causes obstruction of urine from the bladder (VU) to the outside of the body. FLUTD includes several diseases that occur in the cat's urinary tract (Indonesia, 2022).  Knowledge about diseases in cats is one of the problems. Many owners do not realize that their cats are suffering from diseases that can cause death. The cause of the cat's death occurred due to the keeper's lack of knowledge regarding the disease and symptoms the cat was experiencing. Apart from that, the problem is that there are so few doctors available that they are difficult to find, and the information obtained is only in accordance with the condition of the cat when it goes to the vet. If you see other symptoms, like it or not, you have to consult the veterinarian again and it will take additional time and money. This problem can be solved with an expert system that can diagnose the disease suffered by the cat based on the selected symptoms.

The application of Management Information Systems (MIS) in the educational context has become an increasingly important topic in efforts to improve the quality of learning. MIS helps educational institutions to manage information efficiently, increase data accessibility, and improve decision-making processes. This research aims to identify how SIM can improve the quality of learning in educational institutions. The research method used is a literature study to collect information related to the application of SIM in education. The application of Management Information Systems (MIS) in the educational context has become an increasingly important topic in efforts to improve the quality of learning. MIS helps educational institutions to manage information efficiently, increase data accessibility, and improve decision-making processes. This research aims to identify how SIM can improve the quality of learning in educational institutions. The research method used is a literature study to collect information related to the application of SIM in education. Implementing MIS can provide various benefits, including increased efficiency in educational administration, monitoring student performance, and better decision making based on accurate and up-to-date data. SIM also helps in improving communication between various stakeholders in educational institutions, such as teachers, students, parents, and school management. Thus, the implementation of SIM can significantly improve the quality of learning and help educational institutions to achieve their educational goals.

Data mining is a technique to dig up new information from a data warehouse, information is seen as very important and valuable because by mastering information it is easy to achieve a goal, this makes everyone compete to obtain information, as well as in trading businesses such as the Iblite Luxury store.  This store is located in Medan close to residents' houses, Sales transaction data will continue to grow, causing data storage to be even larger. Sales transaction data is only used as an archive without being properly utilized. Basically, a dataset has very useful information. Market basket analysis with a priori algorithm is one of the data mining methods that aims to find association patterns based on consumer shopping patterns, so that it can be known what items of goods are purchased in a At the same time, the results of this study found that the highest support and confidence values were Ysl and Chanel with a support value of 50% and confidence of 75%.

Advances in information and communication technology are growing rapidly in all directions so that a lot of information is produced from technology and is applied in various fields. In the field of information technology, Supply Chain Management is also needed, which is used to monitor inventory and marketing of goods at UD. Anugrah Jaya Tani. UD. Anugrah Jaya Tani is a kiosk that sells various herbicides. Supply chain management (SCM) is one part that can also be developed with the existence of internet resources. The internet can play a role in facilitating SCM activities. This is because SCM activities require communication between the parties involved in this matter. The purpose of using supply chain management, where the most basic is to be able to align customer demand with existing supply. The results of this study are to determine the amount of stock of goods to be marketed, create a system that can be accessed by anyone, and create an attractive consultation layout.