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All Journal Jurnal Riset Akuntansi dan Bisnis JURNAL ILMIAH MANAJEMEN & BISNIS KUMPULAN JURNAL DOSEN UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA Studia Economica: Jurnal Ekonomi Islam Jurnal EMT KITA Owner : Riset dan Jurnal Akuntansi International Conference of ASEAN Prespective and Policy (ICAP) Jurnal Ilmiah Manajemen Kesatuan Enrichment : Journal of Management Jurnal AKMAMI (Akuntansi Manajemen Ekonomi) ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) International Journal of Educational Review, Law And Social Sciences (IJERLAS) International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) Proceeding International Seminar of Islamic Studies International Journal of Applied Finance and Business Studies Balance : Jurnal Akuntansi dan Manajemen Jurnal SALMAN : Sosial dan Manajemen Prosiding Seminar Nasional Universitas Serambi Mekkah Mumtaz : Jurnal Ekonomi dan Bisnis Islam Digital Business Tren Bisnis Masa Depan International Journal of Economic, Technology and Social Sciences (Injects)
Ammy, Baihaqi
Faculty Of Economics And Business, Universitas Muhammadiyah Sumatera Utara
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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DETERMINANT MODEL OF COMPANY VALUE IN THE PROPERTY AND INFRASTRUCTURE SECTOR Zurriah, Rezki; Ammy, Baihaqi; Parlindungan, Ronni
International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) Vol. 1 No. 2 (2021): December
Publisher : CV. Radja Publika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (414.094 KB) | DOI: 10.54443/ijebas.v1i2.64

Abstract

The purpose of this study is to find out and test the effect of good corporate governance, company size, dividend policy, debt policy and profitability on the value of companies in the property and infrastructure sectors in 2008-2017 listed securities in Indonesia. This study is a causal study using secondary data. The population in the study amounted to 63 property and infrastructure companies registered with the IDX for the period 2008-2017. The sampling technique used in this study is purposive sampling where the entire population of 35 companies is used as data in this study. The analysis tool used in this study used regression analysis of panel data.
DETERMINANT MODEL OF COMPANY VALUE WITH PROFITABILITY AS A MEDIATION VARIABLE Parlindungan Sipahutar, Roni; Firza Alpi, M.; Ammy, Baihaqi
International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) Vol. 1 No. 2 (2021): December
Publisher : CV. Radja Publika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (448.802 KB) | DOI: 10.54443/ijebas.v1i2.65

Abstract

This study aims in general to produce a determinant model of firm value with profitability as a mediating variable. The population in this study were all general pharmaceutical sector companies listed on the Indonesia Stock Exchange in 2013-2018. Sampling in this study used a census technique, which was to place the entire population into an observation sample. The sampling method used is purposive sampling with a total sample of 6 Pharmaceutical Companies Listed on the Indonesia Stock Exchange and data from 2013 – 2018. Data collection is carried out on the Indonesia Stock Exchange (IDX) with the website www.idx.co. en. Data analysis techniques in this study are descriptive statistics, multiple regression analysis and path analysis to test the mediating variables. The results of the study show that liquidity has a negative and significant effect on firm value. Meanwhile, profitability has no significant effect on firm value. The liquidity has a positive and significant effect on firm value with profitability as an intervention variable.
DETERMINANT MODEL OF CORPORATE DISCLOSURE SOCIAL RESPONSIBILITY Sanjaya, Surya; Ammy, Baihaqi; Parlindungan, Ronni
International Journal of Educational Review, Law And Social Sciences (IJERLAS) Vol. 1 No. 2 (2021): November
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijerlas.v1i2.72

Abstract

This research aims to find out the Effect of Company Size, Board of Commissioners Size, and Profitability on Corporate Social Responsibility Listed on the Indonesia Stock Exchange for the Period 2014-2018. This research approach uses an associative research approach. The method of data collection is done by means of data documentation sourced from the annual report of the Indonesia Stock Exchange. Based on the collection of samples conducted using the check list according to criteria, obtained the number of research samples as many as 6 companies from 15 populations. Research samples during the period 2014-2018 and data analysis techniques in this study are descriptive statistics, classical assumption tests that include normality tests, multicollinearity tests, and heteroskedity tests, multiple linear regression analysis, hypothesis testing which includes t test, f test and coefficient of determination. The results showed that the Size of the Company had a positive but insignificant effect on Corporate Social Responsibility Disclosure, the Size of the Board of Commissioners had a positive but insignificant effect on the disclosure of Corporate Social Responsibility, and Profitability had a positive but insignificant effect on the disclosure of Corporate Social Responsibility on Automotive companies listed on the Indonesia Stock Exchange for the period 2014-2018.
DETERMINANT MODEL OF DISTRICT/CITY GOVERNMENT FINANCIAL PERFORMANCE IN SUMATERA UTARA PROVINCE Alpi, M. Firza; Ammy, Baihaqi
International Journal of Educational Review, Law And Social Sciences (IJERLAS) Vol. 1 No. 2 (2021): November
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijerlas.v1i2.73

Abstract

The results showed that Capital Expenditure had no partial effect on Financial Performance, Size of Local Government partially affected Financial Performance, and the Remaining Budget Financing partially affected Financial Performance. Partially, Capital Expenditure, Size of Local Government, and Remaining Budget Financing together have an effect on the Financial Performance of district/city governments in North Sumatra Province. The R-Square value is 0.815 or 81.5%. This shows that the variables of Capital Expenditure, Size of Local Government, and Remaining Budget Financing are able to explain the Financial Performance variable of 81.5%. While the remaining 18.5% is explained by other variables outside the study.
Pengaruh Total Asset Turn Over dan Debt to Asset Ratio Terhadap Return on Asset Pada Perusahaan Perhotelan, Restoran Dan Pariwisata yang Terdaftar di Bursa Efek Indonesia Batubara, Hade Chandra; Ammy, Baihaqi
Jurnal EMT KITA Vol 10 No 1 (2026): JANUARY 2026
Publisher : Lembaga Otonom Lembaga Informasi dan Riset Indonesia (KITA INFO dan RISET) - Lembaga KITA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/emt.v10i1.5442

Abstract

This study aims to determine and analyze the effect of Total Asset Turnover (TATO) and Debt to Asset Ratio (DAR) partially and simultaneously on Return on Assets (ROA) in the Hotel, Restaurant, and Tourism sub-sector companies listed on the Indonesia Stock Exchange. The population used in this study is 10 companies in the Hotel, Restaurant, and Tourism industry listed on the Indonesia Stock Exchange (IDX) from 2014 to 2017. From the above population, the author only decided on 9 companies as research samples. The data analysis techniques used are multiple linear regression, classical assumption test, t-test, F-test, and coefficient of determination. Partially, the Total Asset Turnover (TATO) variable shows a significant effect on Return on Assets (ROA) in the Hotel, Restaurant, and Tourism sub-sector companies listed on the Indonesia Stock Exchange. Partially, the Debt to Asset Ratio (DAR) variable shows a significant influence on Return on Assets (ROA) in the Hotel, Restaurant and Tourism sub-sector companies listed on the Indonesia Stock Exchange. Simultaneously, the Total Asset Turnover (TATO) and to Asset Ratio (DAR) variables show a significant influence on Return on Assets (ROA) in the Hotel, Restaurant and Tourism sub-sector companies listed on the Indonesia Stock Exchange. It is better to allocate debt as a source of funding for additional promotional costs and increased productivity which has an impact on the company's sales level. In order for the company's goals to be achieved, the company should be wiser in making funding decisions to use company debt. In order for the company to increase profitability, the company should manage net profit with the amount of capital and assets well so that the company is in a profitable state and condition.
Optimalisasi Digital Branding dan Crowdfunding Syariah Pesantren MANUFA berbasis Website Ammy, Baihaqi; Syahra, Yohanni; Maisyarah Ammy, Putri
ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Vol. 6 No. 3 (2025): Oktober
Publisher : CERED Indonesia Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53695/jas.v6i3.1388

Abstract

Pengabdian kepada masyarakat ini bertujuan untuk meningkatkan keberdayaan Pesantren Madinatuddiniyah Nurul Musthofa (MANUFA) melalui penerapan teknologi digital pada dua aspek utama: transparansi pendanaan dan pengelolaan media sosial. Dengan menerapkan sistem crowdfunding syariah dan pendaftaran santri online, pesantren ini berhasil meningkatkan transparansi keuangan dan mempermudah proses administrasi bagi calon santri. Selain itu, melalui pelatihan digital marketing dan pengelolaan media sosial, pengurus pesantren meningkatkan keterampilan dalam mempromosikan program-program pesantren secara efektif. Hasil pengabdian ini menunjukkan peningkatan yang signifikan pada kedua aspek tersebut, dengan pendanaan pesantren yang lebih terstruktur dan media sosial yang lebih aktif dan efektif. Penerapan teknologi ini tidak hanya meningkatkan efisiensi operasional pesantren, tetapi juga memperluas jangkauan informasi kepada masyarakat dan calon donatur, sehingga mendukung keberlanjutan pesantren dalam jangka panjang.
Implementasi Digital Marketing untuk Meningkatkan Visibilitas SMP Muhammadiyah 50 Amrullah, Amrullah; Ammy, Baihaqi; Efendy Nasution, Asrizal
ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Vol. 6 No. 3 (2025): Oktober
Publisher : CERED Indonesia Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53695/jas.v6i3.1472

Abstract

SMP Muhammadiyah 50 Medan Sunggal menghadapi tantangan penurunan pendaftaran siswa baru dan keterbatasan dana untuk pengembangan fasilitas. Untuk mengatasi hal ini, program pengabdian ini mengimplementasikan strategi digital marketing dan mengembangkan website yang terintegrasi dengan sistem crowdfunding. Website ini berfungsi sebagai platform informasi dan mekanisme donasi yang transparan. Penerapan digital marketing meningkatkan visibilitas sekolah melalui media sosial, yang menghasilkan peningkatan 30% dalam pendaftaran siswa baru, 40% peningkatan engagement media sosial, 25% kenaikan donasi melalui crowdfunding, dan 50% peningkatan traffic website. Program ini berhasil meningkatkan keterampilan digital staf dan mempermudah partisipasi masyarakat dalam mendukung sekolah.
Comparing Linear Regression and Trend Moment with MAPE Optimization for Bitcoin Price Forecasting Accuracy Ammy, Baihaqi; Amrullah, Amrullah; Alpi, M. Firza
Jurnal Ilmiah Manajemen Kesatuan Vol. 13 No. 6 (2025): JIMKES Edisi November 2025
Publisher : LPPM Institut Bisnis dan Informatika Kesatuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37641/jimkes.v13i6.3968

Abstract

The cryptocurrency market, particularly Bitcoin, exhibits extreme volatility, necessitating robust forecasting tools for informed trading decisions. This study aimed to evaluate the performance of linear regression and trend moment models in predicting Bitcoin prices using daily data from 2022 to 2024. Historical closing prices were collected from reliable cryptocurrency exchanges, cleaned to ensure consistency, and augmented with relative strength index and moving average convergence divergence indicators to enhance predictive accuracy. The models were trained on 2022–2023 data and tested on 2024 data, with forecasting accuracy measured using the Mean Absolute Percentage Error metric. The findings revealed that linear regression achieved a lower error rate of 36.44% compared to Trend Moment’s 39.21%, demonstrating superior performance in stable and trending market conditions. Both models struggled with volatile price swings, though linear regression proved more adaptable when incorporating technical indicators. These results suggest that linear regression offers a practical, computationally efficient solution for short-term Bitcoin price forecasting, particularly for retail traders. Future research could explore hybrid models or additional predictors to improve accuracy in volatile markets, contributing to accessible forecasting tools for the cryptocurrency domain.
Co-Authors Amrullah Amrullah Andri Soemitra Asmuni Asmuni Batubara, Hade Chandra Efendy Nasution, Asrizal Firmadani, Firmadani Firza Alpi, M. Jasman Saripuddin Hasibuan Maisyarah Ammy, Putri Muhammad Firza Alpi, Muhammad Firza Mutholib Mutholib Parlindungan Sipahutar, Roni Parlindungan, Ronni Ramadhan, Puja Rizqy Rezki Zurriah Siti Azizah Sugianto Surya Sanjaya Tuti Anggraini Yohanni Syahra