This study aims to determine research trends regarding zakat efficiency topic, assess research collaboration relationships, and identify future research directions. The 52 sample articles published between 2011-2022 on zakat efficiency analyzed by qualitative and quantitative approaches, namely Bibliometric and Systematic Literature Review (SLR) methods. This research uses VosViewers software. It is known that the four sub-themes that dominate research related to zakat efficiency are: Collection and distribution of zakat, Zakat efficiency, Zakat governance, and Zakat performance. This study implies that there is still little research on zakat efficiency theme. Malaysia is the country that has published the most articles about zakat efficiency topic.

This study aims to see the development of research zakat governance around the world published by journals with that theme. This study used a qualitative method with a bibliometric analysis approach. The data used is secondary data with the theme of Islamic bank efficiency originating from the Dimension database for 2007-2023. Then, the data was processed and analyzed using the VosViewer application with the aim of knowing the research development bibliometric mapzakat governance in this world. The results of the study found that author mapping based on cluster density shows that the authors do the most publications with the theme Zakat Governance namely Nikmatul Atiya, Eko Fajar Cahyono, and Sri Herianingrum. Then, the most author affiliations are Al Ain University and Aligarh Muslim University. Next Zakat Governance based on the bibliometric keyword mapping, there are 4 clusters with the most used words being Accounting, Distribution, Good governance and Government.

The goal of this study is to use the Malmquist Productivity Index to figure out how well zakat institutions in Indonesia manage waqf funds. The objects of this study consist of six Zakat institutions in Indonesia, and the data used in this research comes from the annual reports of these institutions during the 2017–2021 period. The input variables in this study include salary expenses, operating expenses, and total assets. Meanwhile, output variables include collected waqf funds and distributed waqf. The results of the study found that the Malmquist Productivity Index (MPI) score for each Zakat institution explained that the level of productivity of Zakat institutions in managing waqf funds fluctuated from year to year. In general, the level of work done by zakat institutions has gone down. This is because efficiency and technology have changed. Analysis during the COVID-19 pandemic found that the productivity of Zakat institutions managing waqf funds before the pandemic had a higher level of productivity than during the pandemic. And analysis of the Malmquist Index quadrant shows that Zakat Institutions managing waqf funds dominate in quadrant 3, with a total of 3 Zakat Institutions, and quadrant 4, with the same number of Zakat Institutions, namely 3 institutions.

This study aims to measure tourism productivity in Indonesia using the Malmquist Productivity Index (MPI) method with the 2010-2020 research period. The research object used is 34 provinces in Indonesia. The data for this research comes from the annual APBD report in each province. The input variables in this study are the economic sector budget and the tourism and cultural budget. While the output is tourism and culture. The results of this study explain that during the 2015-2020 period, the productivity level of provincial tourism in Indonesia has a fluctuating trend from year to year. Based on the average TFPCH score, it is concluded that tourism productivity has shown a decline and technological change has not contributed optimally to increasing tourism productivity in Indonesia. Furthermore, tourism productivity when the Covid-19 pandemic occurred was still declining. Then, analysis of the Malmquist Index quadrant shows that the provinces of Indonesia dominate quadrant 3, namely 22 provinces, which are then followed by quadrant 4 with a total of 12 provinces.

This study aims to see the development of research "Halal Medical Tourism” around the world published by journals with that theme. This study used a qualitative method with a blibliometric analysis approach. The data used is secondary data with the theme "Halal Medical Tourism” which comes from the Scopus database of 101 published journals. Then, the data is processed and analyzed using the VosViewer application with the aim of knowing the research development blibliometric map "Halal Medical Tourism" in this world. The results of the study found that countries that contributed a lot to research "Halal Medical Tourism" are Malaysia, Indonesia, the United States, South Korea, Australia and China. Furthermore, based on the bibliometric keyword mapping, there are 4 clusters that are research lines namely: Development of halal medical tourism, Halal compliance in halal medical tourism, Halal medical tourism destinations and Halal medical tourism services. The most used words are tourism, service, medical tourism, hospital, destination, attitude, product, and Muslim tourist.