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MACHINE LEARNING FOR E-COMMERCE FRAUD DETECTION 机器学习用于电子商务欺诈检测
Pub Date : 2023-11-20 DOI: 10.20473/jraba.v8i2.48559
Rahayu Damayanti, Zaldy Adrianto
The study examines the effectiveness, challenges, and best machine learning algorithms for detecting e-commerce fraud. This study uses a systematic literature review to evaluate the effectiveness of machine learning-based e-commerce fraud detection, identify challenges, and identify the most effective techniques. The study examinedliterature extracted from the ScienceDirect, Emeralds, Wiley, and Springer databases, identifying 29 publications from recognized journals from 2012–2022, filtered using limitations and quality assessment criteria, and assessing paper eligibility. This study reveals that machine learning significantly enhances the accuracy of detecting e-commerce fraud. Yet, there are a number of issues that need to be resolved before machine learning can be utilized to detect e-commerce fraud. Poorer-quality data distribution is the biggest challenge in detecting e-commerce fraud. In order to determine the best machine learning strategy, the model's accuracy was also evaluated, and it was discovered that random forests performed the best in terms of accuracy. This study increases theoretical contributions as a continuation of previous research relevant to the concept of machine learning in detecting fraud in e-commerce. Then, based on the random forest's greater precision, it provides practical advice to e-commerce firms as a basis for decision-makers to find a suitable machine learning technique for fraud detection.
本研究探讨了检测电子商务欺诈的有效性、挑战和最佳机器学习算法。本研究通过系统性的文献综述来评估基于机器学习的电子商务欺诈检测的有效性,确定面临的挑战,并找出最有效的技术。研究考察了从ScienceDirect、Emeralds、Wiley和Springer数据库中提取的文献,从2012-2022年的公认期刊中识别出29篇出版物,使用限制和质量评估标准进行筛选,并评估论文资格。这项研究表明,机器学习能显著提高检测电子商务欺诈的准确性。然而,在利用机器学习检测电子商务欺诈之前,还有一些问题需要解决。数据分布质量较差是检测电子商务欺诈的最大挑战。为了确定最佳的机器学习策略,还对模型的准确性进行了评估,结果发现随机森林在准确性方面表现最佳。本研究延续了之前与机器学习检测电子商务欺诈概念相关的研究,增加了理论贡献。然后,基于随机森林更高的精确度,它为电子商务公司提供了实用建议,为决策者找到合适的欺诈检测机器学习技术提供了依据。
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引用次数: 0
AUDIT COMMITTEE EFFECTIVENESS AS FRAUD PREVENTION MECHANISMS 审计委员会作为预防舞弊机制的有效性
Pub Date : 2023-11-20 DOI: 10.20473/jraba.v8i2.51157
Larassanti Kusumosari, Shiddiq Nur Rahardjo
This study aims to examine the effect of audit committee effectiveness on financial statement fraud. This research type is explanatory research. The research population is property and real estate sector companies listed on the Indonesia Stock Exchange (IDX) during 2020–2022. The sampling method used is a purposive sampling with a total sample of 141 annual reports. The data collection method used content analysis on annual report. This study used logistic regression analysis assisted by EViews13 software. The results showed that the effectiveness of the audit committee, proxied by financial expertise, accounting expertise, and the number of audit committee meetings had negative and significant effect on financial statement fraud. This study contributes by strengthening agency theory, where the findings prove that the effectiveness of the audit committee can overcome agency conflicts and minimize financial statement fraud. Practically, this research contributes to regulators to develop policies regarding the work guidelines of the audit committee as a supervisory body for the financial reporting process and to investors to be able to improve investment decision strategies by analyzing the audit committee structure as a party that ensures the reliability of financial statements which are the basis for corporate decision making.
本研究旨在探讨审计委员会的有效性对财务报表舞弊的影响。本研究属于解释性研究。研究对象为 2020-2022 年期间在印尼证券交易所(IDX)上市的物业和房地产行业公司。采用的抽样方法是目的性抽样,样本总数为 141 份年度报告。数据收集方法采用年报内容分析。本研究使用 EViews13 软件辅助进行逻辑回归分析。结果表明,以财务专业知识、会计专业知识和审计委员会会议次数为代表的审计委员会的有效性对财务报表舞弊具有负向显著影响。研究结果证明,审计委员会的有效性可以克服代理冲突,最大限度地减少财务报表舞弊。在实践中,本研究有助于监管机构制定有关审计委员会工作准则的政策,使其成为财务报告过程的监督机构;也有助于投资者通过分析审计委员会结构,改进投资决策策略,因为审计委员会是确保财务报表可靠性的一方,而财务报表是企业决策的基础。
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引用次数: 0
Strategi Peningkatan Pendapatan Daerah Melalui Retribusi Lingkungan Di Kota Mojokerto 莫约克托市通过环境补偿增加地方收入的战略
Pub Date : 2023-11-20 DOI: 10.20473/jraba.v8i2.48484
Puji Handayati Handoyo, Budi Eko Soetjipto, Etty Soesilowati, Ratna Dwi Nastiti
Penelitian ini bertujuan untuk mengetahui potensi penerimaan retribusi persampahan di Kota Mojokerto. Penelitian ini merupakan sebuah penelitian kualitatif deskriptif dengan menggunakan data time series. Penelitian ini dilakukan di Dinas Lingkungan Hidup Kota Mojokerto. Objek penelitian yaitu laporan realisasi penerimaan retribusi persampahan tahun 2021 – 2022 dan Data BPS terkait dengan pelanggan PDAM. Metode analisis data adalah reduksi data, penyajian data, dan penarikan kesimpulan. Hasil penelitian menunjukkan bahwa sampai saat ini pemungutan retribusi daerah di Kota Mojokerto dilakukan berdasarkan Undang-Undang Nomor 28 Tahun 2009 Tentang Pajak Daerah dan Retribusi Daerah serta Peraturan Daerah Kota Mojokerto No. 8 Tahun 2011 tentang Retribusi Jasa Umum. Sejak saat itu belum ada perubahan. Hasil penelitian juga menunjukkan bahwa dari total biaya penanganan sampah yang dikeluarkan selama 1 tahun atau sebesar Rp 5.477.061.600, penerimaan retribusi sampah non rumah tangga hanya mampu menutup 5% dari total penerimaan retribusi yang dibutuhkan yaitu sebesar Rp.278.394.600. Penerimaan tersebut perlu ditingkatkan untuk meningkatkan pelayanan persampahan di Kota Mojokerto. Hasil penelitian terkait potensi penerimaan retribusi di Kota Mojokerto menunjukkan bahwa kenaikan penerimaan retribusi dapat terjadi jika tarif yang sudah ada dinaikkan sampai dengan 2x lipat setiap tahunnya. Selain itu pemerintah Kota Mojokerto juga harus menetapkan klasifikasi wajib retribusi bagi rumah tangga. Hasil penelitian ini diharapkan mampu memberikan kontribusi secara teoritis yaitu memperkuat dan memperkaya literasi terkait dengan strategi optimalisasi retribusi persampahan untuk menaikkan Pendapatan Asli Daerah (PAD). Selain itu, penelitian ini diharapkan berkontribusi secara praktis terhadap kebijakan Pemerinta Kota Mojokerto sebagai bahan pertimbangan dalam perubahan peraturan terkait retribusi sampah dan kenaikan tarif.
本研究旨在确定莫霍克托市废物回收的潜在收入。本研究是一项使用时间序列数据的描述性定性研究。研究在莫约克托市环境局进行。研究对象是 2021-2022 年废物回收收入实现情况报告和与 PDAM 客户相关的 BPS 数据。数据分析方法包括数据还原、数据展示和结论得出。研究结果表明,迄今为止,莫霍克托市地方税收的征收是根据 2009 年关于地区税收和征税的第 28 号法律以及 2011 年关于一般服务征税的第 8 号莫霍克托市地区条例进行的。从那时起就没有发生过变化。结果还显示,在一年的垃圾管理总成本(547706.16 万印尼盾)中,非家庭垃圾处理收入仅够支付所需总处理收入的 5%,即 27839.46 万印尼盾。为改善莫若克托市的废物处理服务,需要增加这笔收入。有关莫约科托市报应收入潜力的研究结果表明,如果每年将现有的收费标准提高 2 倍,就能增加报应收入。此外,Mojokerto 市政府还应确定家庭报应义务的分类。本研究的结果有望在理论上做出贡献,即加强和丰富与垃圾处理优化策略相关的知识,以增加地区原始收入(PAD)。此外,本研究还将为莫霍克托市政府的政策做出实际贡献,作为修改与垃圾处理和增加关税相关的法规的考虑因素。
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引用次数: 0
KETIDAKPASTIAN LINGKUNGAN DAN MANAJEMEN LABA DENGAN KEMAMPUAN MANAJERIAL SEBAGAI VARIABEL MODERASI 以管理能力为调节变量的环境不确定性与收益管理
Pub Date : 2023-11-20 DOI: 10.20473/jraba.v8i2.47337
Iswajuni, Bryan Luke
Penelitian ini bertujuan untuk menguji moderasi kemampuan manajerial pada hubungan ketidakpastian lingkungan terhadap manajemen laba. Sampel penelitian adalah perusahaan manufaktur yang terdaftar di Bursa Efek Indonesia periode 2017-2021 sebanyak 344 sampel. . Hasil penelitian menunjukkan bahwa ketidakpastian lingkungan berhubungan positif terhadap manajemen laba. Hasil penelitian mengindikasikan bahwa ketidakpastian lingkungan berhubungan positif terhadap manajemen laba dan moderasi kemampuan manajerial terbukti memperlemah hubungan ketidakpastian lingkungan terhadap manajemen laba.
本研究旨在检验管理能力对环境不确定性与收益管理之间关系的调节作用。研究样本为 2017-2021 年期间在印度尼西亚证券交易所上市的制造业公司,共计 344 个样本。.结果表明,环境不确定性与收益管理正相关。结果表明,环境不确定性与收益管理正相关,而管理能力的调节作用被证明会削弱环境不确定性与收益管理之间的关系。
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引用次数: 0
FINANCIAL FRAUD DETECTION AND MACHINE LEARNING ALGORITHM (UNSUPERVISED LEARNING): SYSTEMATIC LITERATURE REVIEW 金融欺诈检测和机器学习算法(无监督学习):系统文献综述
Pub Date : 2023-11-20 DOI: 10.20473/jraba.v8i2.49927
Nadia Husnaningtyas, Totok Dewayanto
This research aims to assess the usage of unsupervised learning in detecting financial fraud across various financial industries by identifying cognitive constructs, benefits, economic optimization, and challenges associated with fraud detection necessitating innovative approaches for effective detection. This study conducts Systematic Literature Review following PRISMA protocol for article selection of 27 journal articles published between 2010 and 2023, sourced from Scopus database. The analysis discloses that unsupervised learning has been implemented across diverse financial sectors, including online payments, insurance, and prominently in banking, especially for identifying anomalies in credit card transactions. K-Means is the most popular method used in unsupervised learning. Nevertheless, there are ongoing challenges that require solutions to ensure the efficacy of machine learning implementation, encompassing issues like class imbalance and the complexity of fraudulent activities. In theoretical terms, this research provides an understanding of cognitive concepts, benefits and applications, challenges, and practical recommendations in the use of unsupervised learning for financial fraud detection. This is useful for practical implementation, benefiting industry practitioners in selecting appropriate models with datasets that have the potential to enhance detection system accuracy and reduce financial losses due to fraud.
本研究旨在通过识别与欺诈检测相关的认知结构、益处、经济优化和挑战,评估无监督学习在各金融行业金融欺诈检测中的应用,从而找到有效检测所需的创新方法。本研究按照 PRISMA 协议进行了系统文献综述,从 Scopus 数据库中选取了 2010 年至 2023 年间发表的 27 篇期刊论文。分析显示,无监督学习已在不同的金融领域得到应用,包括在线支付、保险和银行业,尤其是在识别信用卡交易异常方面。K-Means 是无监督学习中最常用的方法。然而,要确保机器学习实施的有效性,还需要解决一些持续存在的挑战,其中包括类不平衡和欺诈活动的复杂性等问题。从理论上讲,本研究提供了对认知概念、优势和应用、挑战的理解,以及在金融欺诈检测中使用无监督学习的实用建议。这对实际应用很有帮助,有利于行业从业人员选择合适的模型和数据集,从而有可能提高检测系统的准确性,减少欺诈造成的经济损失。
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引用次数: 0
THE MODERATING ROLE OF ESG DISCLOSURE ON FIRM STRATEGY AND STOCK PRICE CRASH RISK 企业社会责任信息披露对公司战略和股价暴跌风险的调节作用
Pub Date : 2023-11-20 DOI: 10.20473/jraba.v8i2.45562
Gregorius Jeandry, Nurdin
This study aims to examine the effect of the company's business strategy on the stock price crash risk and examine the role of ESG disclosure as moderation in the relationship between business strategy and the stock price crash risk. The study population includes all companies listed on the Indonesia Stock Exchange (IDX) for the period 2017–2022. The sampling technique used was saturation sampling, with a total of 609 observations. Data collection techniques use content analysis. The data analysis technique uses ordinary least squares. This study found that firm strategy with the prospector typology affect the stock price crash risk, while the defenders and analyzers typologies have no effect on the stock price crash risk. ESG disclosure can weaken the effect of the business strategies of the prospector, defender, and analyzer typologies on stock price crash risk. Additional analysis found that ESG can reduce the risk of future stock price crashes. The contribution to signal theory is that there is consistently a strategic motivation for management to control good and bad information for the public. Bad information can cause the risk of price crashes to be higher than good information. Through ESG disclosure, it can provide positive signals to the public so that the risk of stock price crashes is low. The practical contribution for investors is as an investment strategy by paying more attention to the tendency of stock price crashes. For the government as a basis for making economic policies to create a well-maintained business climate.
本研究旨在考察公司业务战略对股价暴跌风险的影响,并研究环境、社会和公司治理信息披露在业务战略与股价暴跌风险关系中的调节作用。研究对象包括 2017-2022 年期间在印度尼西亚证券交易所(IDX)上市的所有公司。采用的抽样技术是饱和抽样,共有 609 个观察值。数据收集技术采用内容分析法。数据分析技术采用普通最小二乘法。本研究发现,具有勘探者类型的公司战略会影响股价暴跌风险,而维护者和分析者类型对股价暴跌风险没有影响。ESG披露可以削弱勘探者、防御者和分析者类型的企业战略对股价暴跌风险的影响。其他分析发现,ESG 可以降低未来股价暴跌的风险。该理论对信号理论的贡献在于,管理层始终有一个战略动机来控制对公众的好信息和坏信息。坏信息会导致股价暴跌的风险高于好信息。通过 ESG 披露,可以向公众提供积极的信号,从而降低股价暴跌的风险。对投资者的实际贡献是,作为一种投资策略,更加关注股价暴跌的趋势。对政府而言,可作为制定经济政策的依据,营造良好的商业环境。
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引用次数: 0
PENGARUH LEVERAGE DAN UKURAN PERUSAHAAN TERHADAP RATING SUKUK DENGAN PROFITABILITAS SEBAGAI VARIABEL INTERVENING (STUDI EMPIRIS PADA PERUSAHAAN YANG TERDAFTAR DI JAKARTA ISLAMIC INDEX) 杠杆率和公司规模对苏甘评级的影响,以盈利能力为前提(雅加达伊斯兰指数的企业实证研究)
Pub Date : 2023-09-15 DOI: 10.30596/16797
The purpose of this research is to find out, test and analyze the effect of leverage and company size on profitability. To find out, test and analyze the effect of leverage and company size on sukuk ratings. To find out, test and analyze the effect of profitability on sukuk ratings. To find out, test and analyze Profitability mediates the influence of leverage and company size on sukuk ratings. The type of research used in this research is associative quantitative research. The total number of companies registered on the Jakarta Islamic Index (JII) in 2018-2021 which is the population in this research is 44 companies. Based on the criteria, the companies that can be used as samples in this research are 15 companies. Data analysis in this research is a statistical analysis method using Structural Equation Modeling (SEM) type Partial Least Squares (SEM PLS). Based on research results. The t-statistic value of 4,414>1.98 and P-value 0.000<0.05 indicate that DER has an effect on the sukuk rating.
本研究的目的是找出、检验和分析杠杆率和公司规模对盈利能力的影响。为了找出、检验和分析杠杆率和公司规模对伊斯兰债券评级的影响。为了找出、检验和分析盈利能力对伊斯兰债券评级的影响。为了找出并检验和分析盈利能力在杠杆率和公司规模对伊斯兰债券评级的影响中的中介作用。本研究使用的研究类型是关联定量研究。2018-2021年在雅加达伊斯兰指数(JII)注册的公司总数为44家公司,即本研究中的人口。根据这些标准,本研究中可以作为样本的公司有15家。本研究的数据分析是采用结构方程模型(SEM)型偏最小二乘(SEM PLS)的统计分析方法。根据研究结果。t统计值为4,414>1.98, p值为0.000<0.05,表明DER对伊斯兰债券评级有影响。
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引用次数: 0
PENGARUH CAR, NPF, ROA, ROE TERHADAP PEMBIAYAAN EKUITAS BAGI HASIL DENGAN BOPO SEBAGAI VARIABEL INTERVENING DI BANK UMUM SYARIAH INDONESIA TAHUN 2017 – 2021 汽车、NPF、ROA和ROE的影响是2017年至2021年,CAR、NPF、ROA和ROE对结果的公平融资的影响
Pub Date : 2023-09-15 DOI: 10.30596/15126
Metode analisis data menggunakan Regresi Panel, dan kumpulan data mencakup data cross-sectional dan time series. Tiga metode yang di pakai yaitu, Uji Chow, Uji Hausman, dan Uji Langrange sering digunakan saat mengestimasi model regresi menggunakan data panel. Temuan penelitian ini menunjukkan bahwa Random Effect Model adalah model regresi terbaik untuk digunakan. Temuan penelitian ini lebih lanjut menunjukkan bahwa untuk tahun 2017 hingga tahun 2021, CAR dan NPF secara parsial tidak berpengaruh terhadap Pembiayaan Ekuitas Bagi Hasil Bank Umum Syariah di Indonesia. Pembiayaan Ekuitas Bagi Hasil Bank Umum Syariah di Indonesia tahun 2017 hingga tahun 2021 juga dipengaruhi oleh ROA, ROE, dan BOPO. Berdasarkan pengujian secara simultan, variabel CAR, NPF, ROA, ROE, dan BOPO berpengaruh terhadap pembiayaan ekuitas bagi hasil bank umum syariah Indonesia tahun 2017 hingga tahun 2021. Temuan analisis intervening menunjukkan bahwa BOPO dapat memediasi hubungan tersebut. antara CAR, NPF, ROA, dan ROE Tentang Pembiayaan Ekuitas Bagi Hasil Bank Umum Syariah di Indonesia periode 2017 hingga tahun 2021
使用面板回归和数据集分析数据的方法包括跨分段数据和时间顺序。采用的三种方法是:Chow test、horusman试验和Langrange测试,在使用面板数据时经常使用回归模型。这项研究发现表明,随机效果模型是最好的回归模式。这项研究发现进一步表明,在2017年至2021年期间,CAR和NPF部分不影响伊斯兰一般银行收益的股权融资。伊斯兰教法在2017年至2021年的一般银行收益融资也受到了ROA、ROE和BOPO的影响。根据同时的测试,变量汽车、NPF、ROA、ROE和BOPO对2017年至2021年印尼一般银行收益的公平融资有所影响。干预分析的结果表明,BOPO可以培养这种关系。汽车、NPF、ROA和ROE都是关于2017年至2021年印尼伊斯兰一般银行收益的公平融资
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引用次数: 0
SUSTAINABILITY REPORT, GOOD CORPORATE GOVERNANCE DAN KINERJA KEUANGAN: STUDI KASUS PERUSAHAAN PERTAMBANGAN DI INDONESIA 可持续发展报告,良好的公司治理和财务业绩:印尼矿业公司案例研究
Pub Date : 2023-09-15 DOI: 10.30596/16611
Sustainability Report and Good Corporate Governance are corporate governance that provide information regarding economic, environmental and social activities and status to stakeholders both within and outside the Company. This study aims to examine the effect of sustainability reports and good corporate governance on financial performance proxied by return on assets (ROA). The objects of this research are mining companies listed on the IDX which issue consecutive annual financial reports in 2020-2022. The research sampling technique used a purposive sampling method, namely the selection of samples based on criteria. The sample of this research is 15 companies so that it obtains 45 observations. Data analysis technique uses multiple linear regression method (multiple linear regression method). Data processing uses panel data regression with the help of eviews 10 software. The results of this study indicate that economic aspects, independent board of commissioners have a significant positive effect on financial performance while environmental aspects, social aspects, managerial ownership do not have a significant effect on financial performance. Based on the results of the simultaneous test (f test) shows that Economic Aspects, Environmental Aspects, Social Aspects, Independent Board of Commissioners and Managerial Ownership have an effect on Financial Performance
可持续发展报告和良好的公司治理是公司治理,向公司内外的利益相关者提供有关经济、环境和社会活动和状况的信息。本研究旨在探讨可持续发展报告和良好的公司治理对资产收益率(ROA)所代表的财务绩效的影响。本研究的对象是IDX上市的矿业公司,这些公司在2020-2022年连续发布年度财务报告。本研究的抽样技术采用了有目的的抽样方法,即根据标准选择样本。本研究的样本是15家公司,因此它得到了45个观察值。数据分析技术采用多元线性回归方法(multiple linear regression method)。数据处理采用面板数据回归,借助eviews 10软件。研究结果表明,经济因素、独立董事会对财务绩效有显著的正向影响,而环境因素、社会因素、管理层所有权对财务绩效没有显著影响。基于同时检验的结果(f检验)表明,经济因素、环境因素、社会因素、独立董事会和管理层所有权对财务绩效有影响
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引用次数: 0
PEMAHAMAN WAJIB PAJAK USAHA MIKRO KECIL DAN MENENGAH (UMKM) TENTANG KEWAJIBAN PERPAJAKAN UMKM 小额和中小企业对税务义务的概念
Pub Date : 2023-09-15 DOI: 10.30596/16296
Penelitian ini terfokus pada wajib pajak UMKM di Kecamatan Medan Denai yang masih kurang paham dalam membayar pajak dan tidak mengetahui tarif pajak serta Peraturan Pemerintah No. 46 Tahun 2013 dan Peraturan Pemerintah yang baru Peraturan Pemerintah No. 23 Tahun 2018. Tujuan penelitian untuk mengetahui tingkat pemahaman Wajib Pajak terhadap Peraturan Pemerintah No. 46 Tahun 2013 dan perubahan Peraturan Pemerintah No. 23 Tahun 2018 serta untuk mengetahui perbedaan pengetahuan dan pemahaman Wajib Pajak yang memiliki NPWP dengan yang tidak memiliki NPWP. Jenis penelitian ini adalah pendekatan deskriptif kualitatif. Teknik pengumpulan data dalam penelitian ini adalah melalui wawancara langsung. Teknik analisis data dalam penelitian ini adalah analisis deskriptif. Hasil penelitian ini adalah pemahaman Wajib Pajak UMKM di Kecamatan Medan Denai tentang ketentuan umum dan tata cara perpajakan masih rendah. Tingkat kesadaran pelaku UMKM terhadap Kewajiban Perpajakan menjadi salah satu faktor penyebab tidak patuhnya dalam melaksanaka kewajiban membayar pajak. Pemahaman Wajib Pajak UMKM di Kecamatan Medan Denai masih rendah dengan adanya Peraturan Pemerintah No. 46 Tahun 2013 atas dasar pengenaan tarif 1% dari omset bruto.
这项研究的重点是在德纳奈国际(UMKM road)纳税方面缺乏了解,不知道2013年46年的关税和政府条例以及2018年23日的新政府法规。该研究的目的是了解2013年46年政府法规的纳税人理解水平和2018年23年政府法规的变更,并了解拥有NPWP和没有NPWP的纳税人知识和理解的差异。这种研究是一种描述性质的方法。这项研究的数据收集技术是通过直接采访进行的。本研究的数据分析技术是描述性分析。这项研究的结果是,德纳奈地区的UMKM纳税人对公共政策和税收条例的认识仍然很低。UMKM人对税收义务的认识是造成税收义务不完整的因素之一。2013年,由于总营业额1%的调整,印度德纳尔地区的UMKM纳税人收税率仍然很低。
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引用次数: 0
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