Purpose: This study aims to analyze the external and internal factors that affect the movement of the Composite Stock Price Index (IHSG) in Indonesia in the short and long term. External influences of global stock indices are DJIA, NIKKEI225 and SSEC, as well as the exchange rate (USD/IDR). The most influential internal influence is inflation. Research methodology: This study uses the ECM (Error Correction Model) method. ECM aims to determine the long-term and short-term effects of variables that affect the JCI in Indonesia. In addition, this study uses monthly time series data from January 2015 to December 2020. Results: The results of this study show that the DJIA index and Inflation have a positive and significant influence in the long and short term on the movement of IHSG  in Indonesia. The SSEC and Exchange Rate Index (USD/IDR) have a negative and significant relationship in the long and short term to the movement of IHSG in Indonesia, while the NIKKEI225 index has no long-term or short-term influence on the movement of IHSG in Indonesia.  Limitations: The limitation of this research is that there are many variables outside the model that are not included in the study Contribution: For investors who will start investing in the Indonesia Stock Exchange, before investing, they should pay attention to the movement of global stock indexes (DJIA and SSEC).

Purpose: This study aimed to determine the effect of tax corruption perception and service quality tax officer towards individual taxpayers compliance in Lampung Province. Method: The sampling method used is proportional random sampling with a sample of 130 individual taxpayers registered at 6 KPP’s in Lampung Province. The analytical tool used in this research is multiple linear regression analysis. Data were analyzed using SPSS version 22. Results: The results of this study show that tax corruption perception has positif and significant effect on individual taxpayers compliance in Lampung Province and service quality tax officer has no effect on individual taxpayers compliance in Lampung Province. Limitations: This study only uses two independent variables while there are many other variables that can affect taxpayer compliance. Contribution: This study is expected to provide information for the KPP regarding the effect of service quality and the effect of tax corruption perception on taxpayer compliance.

Purpose: This study seeks to determine the influence of job satisfaction and work engagement on PT Golden Sari Lampung employees' performance. In principle, every company always expects its employees to work optimally to increase profits and help accelerate the achievement of other organizational goals. Someone with a high work engagement will tend to show the best performance because they enjoy their work. Employees who have an attachment to their work will certainly show enthusiasm and dedication and fully concentrate on work so that employees can show their best performance in doing their job. Research methodology: This study's data collection method used a Likert scale questionnaire. The sample used in this study was 150 respondents. The data analysis tool used is multiple linear regression analysis, t-test, and f-test. Results: This study's results indicate that job satisfaction positively affects performance, and work engagement positively affects performance. Limitations: The factors that affect employee performance used in this study are only the variables of job satisfaction and work engagement. At the same time, many other variables can be factors that affect the performance of employees of a company. Contribution: The company should be open to every aspiration conveyed by employees and provide opportunities for them to express opinions in decision-making. It is done so that employees feel more influence over what happens to the company. In addition, the management of PT Golden Sari Lampung should foster a sense of kinship and emotion toward the company so that employees feel comfortable and full of concentration in every job.