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All Journal Medical Journal of Indonesia Finesta Sinkron : Jurnal dan Penelitian Teknik Informatika IT JOURNAL RESEARCH AND DEVELOPMENT JMKSP (Jurnal Manajemen, Kepemimpinan, dan Supervisi Pendidikan) Jurnal Hukum Lex Generalis Jurnal Manajerial Dan Kewirausahaan Journal of Business, Management and Social Studies Journal of Mutidisciplinary Issues
William Chandra
Department of Orthopaedic and Traumatology, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo Hospital, Jakarta
Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Medicine & Pharmacology Social Sciences Other

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Pengaruh Perubahan Fraksi Harga dan Satuan Perdagangan terhadap Likuditas Bursa Efek Indonesia Chandra, William
Finesta Vol 3, No 1 (2015)
Publisher : Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (78.005 KB)

Abstract

Penelitian ini dilakukan untuk mengetahui pengaruh perubahan fraksi harga dan satuan perdagangan  terhadap likuiditas Bursa Efek Indonesia yang diukur melalui Waiting Time, Volatility, Turnover dan ILLIQ Ratio. Paired sample t –test digunakan untuk melihat apakah terdapat perbedaan signifikan keempat indikator di atas sebelum dan setelah perubahan aturan. Dengan menggunakan data harian dari saham yang tergabung dalam Indeks LQ45 selama Maret 2013 hingga Oktober 2014, hasil penelitian menunjukkan adanya perbedaan signifikan dari semua indikator likuiditas yang digunakan dimana Waiting Time, Volatility dan ILLIQ Ratio mengalami penurunan dan Turnover mengalami kenaikan yang mengindikasikan market yang semakin likuid.
Short-term outcome of ceramic-on-ceramic total hip replacement in young adult patients Dilogo, Ismail H.; Chandra, William
Medical Journal of Indonesia Vol 24, No 3 (2015): September
Publisher : Faculty of Medicine Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (471.522 KB) | DOI: 10.13181/mji.v24i3.1184

Abstract

Background: Ceramic-on-ceramic (CoC) total hip replacement (THR) was developed to minimize debris and osteolytic reaction. The major concern is its brittleness. The aim of this study was to evaluate the short-term outcome of CoC THR in young adult patients. Methods: 11 patients, 13 THR procedures, were followed up until six months after surgery in Cipto Mangunkusumo Hospital. Evaluation included Harris hip score (HHS), visual analog scale (VAS), patients’ complaint, short form-36 (SF-36), and acetabular and femoral component angles. Data were analyzed using Wilcoxon signed rank test, paired t-test, and Spearman test. Results: The average age of the patients was 33.6 years old and 55% of them were female. Systemic lupus erythematosus was the main causative disease for THR. The VAS average decreased before surgery and after six months of surgery (5 to 1). Pre- and post-operative HHS and SF-36 increased significantly by (25 to 92) and (21 to 54) respectively. Squeaking sound was reported by two patients. No correlation was found between acetabular and femoral component and squeaking incidence.Conclusion: CoC THR showed excellent short term outcome for young adult patients. With proper indications, CoC THR ensures excellent clinical outcomes and promising survivorship.
Sentiment Analysis Of Hotel Reviews On Tripadvisor With LSTM And ELECTRA Husein, Amir Mahmud; Livando, Nicholas; Andika, Andika; Chandra, William; Phan, Gary
Sinkron : jurnal dan penelitian teknik informatika Vol. 7 No. 2 (2023): Research Article, Volume 7 Issue 2 April, 2023
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/sinkron.v8i2.12234

Abstract

This study examines the importance of hotel review data analysis and the use of Natural Language Processing (NLP) technology in predicting hotel review sentiment. In this study, deep learning models such as Long Short-Term Memory (LSTM) and Efficiently Learning an Encoder that Classifies Token Replacements Accurately (ELECTRA) are used to predict hotel review sentiment in Indonesian. Hotel review data was obtained through a data scraping process with webscraper.io from the Tripadvisor website and a total of 977 hotel review data were obtained from Grand Mercure Maha Cipta Medan Angkasa. Before the sentiment prediction process is carried out, hotel review data must go through the text preprocessing stage to remove punctuation marks, capital letters, stopwords, and a lemmatizer process is carried out to facilitate further data processing. In addition, sentiments that were previously unbalanced need to be balanced through the undersampling process. The data that has been cleaned and balanced is then labeled as negative (0), neutral (1) and positive (2) sentiments. The test results show that the ELECTRA model produces better performance than the LSTM with an accuracy of 47% by ELECTRA and 30% by LSTM.
Analisis Antarmuka Pengguna Aplikasi PeduliLindungi untuk Meningkatkan Pengalaman Pengguna dengan Metode Evaluasi Heuristik: - Andry, Johanes Fernandes; Clara, Monica; Chandra, William; Antonio, Marco; Bernanda, Devi Yurisca
IT Journal Research and Development Vol. 8 No. 2 (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/itjrd.2023.12295

Abstract

The Covid-19 pandemic limits human activities every day. The spread of the virus is uncontrollable, it can attack anyone, anytime, and anywhere. As a solution, the use of the PeduliLindungi application technology developed by the Ministry of Communication and Information in collaboration with other relevant Ministries and Institutions is used to help track the spread of viruses and understand preventive measures to stop their spread. Research was conducted on the appearance of the application's User Interface using the Heuristic Evaluation method to measure its usefulness. However, there are several problems experienced by users, namely the information is not updated (vaccines and Covid-19 tests), the language used is inconsistent, and others. Questionnaire testing with 10 questions based on 10 Heuristic Evaluation criteria was distributed via Google Form to 33 respondents. Then, carry out validity and reliability tests with the research results obtained Valid and Reliable. as well as testing the hypothesis of all Learnability, Efficiency, Memorability, and Error Prevention factors, based on usability and user satisfaction aspects, questionnaire items all test results are accepted and there are no serious problems. However, there are a number of things that need to be improved so that the application can run more optimally.
The Role of Supervision of the Board of Commissioners in the Company PT. XYZ Chandra, William; Wijayati, Nureni
JMKSP (Jurnal Manajemen, Kepemimpinan, dan Supervisi Pendidikan) Vol. 9 No. 1 (2024): JMKSP (Jurnal Manajemen, Kepemimpinan, dan Supervisi Pendidikan)
Publisher : Graduate Program Magister Manajemen Pendidikan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/jmksp.v9i1.13783

Abstract

The importance of implementing good governance principles that do not just focus on formality, but on substance for public companies is important. This research aims to of paying more attention to corporate governance in the context of the ASEAN Corporate Governance Scorecard. The method used in this research uses a qualitative approach. the research results found that a focus on board diversification, meeting minutes, appointment of a corporate secretary, and evaluation of board performance can provide a strong foundation for increasing transparency, accountability, and corporate resilience amidst ever-evolving business dynamics. Emphasis on the inclusion of independent commissioners, the formation of special board committees, and the introduction of best governance practices are also important in facing regulatory changes and industry dynamics.
Peran Kualitas Layanan dan Ulasan Produk terhadap Kepuasan Pelanggan di Tiktok Shop Chandra, William; Cokki, Cokki
Jurnal Manajerial Dan Kewirausahaan Vol. 6 No. 2 (2024): Jurnal Manajerial dan Kewirausahaan
Publisher : Fakultas Ekonomi dan Bisnis, Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jmk.v6i2.29858

Abstract

TikTok sebagai platform media sosial yang berfokus pada video kini menghadirkan fitur TikTok Shop di dalam aplikasinya memungkinkan pengguna untuk aktif berbagi video sekaligus menjual dan membeli produk atau layanan melalui platform tersebut. Tujuan dari penelitian ini adalah untuk menguji pengaruh kualitas layanan dan ulasan produk terhadap kepuasan pelanggan di TikTok Shop dan mengisi senjang penelitian yang belum ada mengenai perkembangan e-commerce TikTok Shop yang sedang berkembang pesat. Sampel dari penelitian ini adalah 207 pengguna TikTok Shop di DKI Jakarta. Metode convenience sampling digunakan dengan menyebarkan kuesioner secara online yang kemudian dianalisis menggunakan PLS-SEM. Hasil penelitian ini menunjukkan bahwa kualitas layanan dan ulasan produk memiliki dampak signifikan terhadap kepuasan pelanggan. Penelitian ini dapat membantu TikTok Shop memperluas wawasan perdagangan elektroniknya untuk tetap bersaing di masa mendatang. TikTok as a social media platform that focuses on video now presents the TikTok Shop feature in its application, allowing users to actively share videos as well as sell and buy products or services through the platform. The aim of this research is to examine the influence of service quality and product reviews on customer satisfaction at TikTok Shop and fill the gap in research that does not yet exist regarding the development of TikTok Shop e-commerce which is growing rapidly. The sample from this research was 207 TikTok Shop users in DKI Jakarta. The convenience sampling method was used by distributing questionnaires online which were then analyzed using PLS-SEM. The results of this research indicate that service quality and product reviews have a significant impact on customer satisfaction. This research can help TikTok Shop expand its e-commerce horizons to remain competitive in the future.
Law as a Tool of Social Engineering in Indonesia: Revisiting Roscoe Pound Theory and Its Application to Legal Reform Rasji, Rasji; Chandra, William; Hamonangan, Marcellius Kirana
Journal of Business, Management, and Social Studies Vol. 4 No. 3 (2024): Journal of Business, Management, and Social Studies
Publisher : APPS Publications

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53748/jbms.v4i3.102

Abstract

This article examines the role of law as an instrument of social engineering within the framework of sociological jurisprudence, focusing on its application in the Indonesian legal system. The study employs a normative juridical approach with conceptual, historical, and comparative methods to analyze how legal structures can influence social transformation. Findings indicate that while the theoretical foundation aligns with Indonesia’s aspiration for justice and reform, practical implementation often lacks systemic integration and responsiveness to societal needs. By mapping these gaps, the research proposes a conceptual framework for enhancing the law’s role in achieving equitable and adaptive legal reform. This contribution bridges classical legal theory with the realities of Indonesia’s legal development, highlighting the importance of aligning philosophical ideals with practical governance.
CONSTRUCTION OF AUTHORITY IN CORPORATE CONTRACTS: TENSION BETWEEN FORMAL STRUCTURE AND PRACTICAL FLEXIBILITY IN THE PERSPECTIVE OF GENERAL LAW Chandra, William; Lie, Gunardi
Journal of Multidisciplinary Issues Vol 5 No 2 (2025): Journal of Multidisciplinary Issues
Publisher : APPS Publications

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53748/jmis.v5i2.73

Abstract

Authority constitutes a fundamental legal basis in corporate business agreements. In practice, it is not uncommon to find contracts signed by individuals lacking full formal legal legitimacy, either because they fall outside the corporate authority structure or lack proper power of attorney or official appointment. This issue raises legal questions regarding the validity of agreements that are substantively agreed upon but defective in legal representation. This study aims to analyze the boundaries of authority in corporate agreements and to evaluate the general legal approach toward legal acts undertaken by unauthorized individuals. The method employed is a normative juridical approach with qualitative analysis of primary and secondary legal materials. The findings indicate that although positive law mandates formal authority, corporate practice often tolerates actions considered commercially valid, especially when there is implicit acceptance or good faith on the part of the involved parties. These findings suggest that the general legal approach needs to be reconstructed to address the challenges of modern contractual practices. This research contributes to corporate legal practice by emphasizing the need to strengthen internal verification mechanisms and recommending the development of adaptive legal norms, while also enriching theoretical discourse on the limits of authority in contract law.
Hukum sebagai Alat Rekayasa Sosial: Gagasan Roscoe Pound dan Relevansinya Bagi Reformasi Hukum di Indonesia Rasji; Chandra, William; Hamonangan, Marcellius Kirana
Jurnal Hukum Lex Generalis Vol 5 No 10 (2024): Tema Filsafat Hukum, Politik Hukum dan Etika Profesi Hukum
Publisher : CV Rewang Rencang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56370/jhlg.v5i10.989

Abstract

This article aims to examine the concept of law as a tool of social engineering based on Roscoe Pound’s theory and its relevance within the Indonesian legal system. The study employs a normative juridical approach, using conceptual, historical, and comparative methods. Findings show that although Indonesia adopts a civil law system with legalistic tendencies, social engineering through law is still possible via legislative reform and strengthening law as an agent of change. The adapted ideas of Pound by Mochtar Kusumaatmadja and Satjipto Rahardjo indicate that law must remain responsive and adaptive to social demands. This article emphasizes the importance of integrating legal theory with public policy in advancing national legal reform.
Danantara and the Reform of Indonesia's Economy: A Multi-Dimensional Literature Review on Investment, SOEs, and National Development Chandra, William; Silalahi, Wilma
Journal of Business, Management, and Social Studies Vol. 4 No. 3 (2024): Journal of Business, Management, and Social Studies
Publisher : APPS Publications

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53748/jbms.v4i3.105

Abstract

Danantara, Indonesia’s newly established sovereign wealth fund (SWF), holds transformative potential for economic reform. This article analyzes Danantara’s strategic role in optimizing investment management, enhancing the performance of State-Owned Enterprises (SOEs), and advancing Indonesia’s national development agenda. Employing a qualitative literature review of peer-reviewed sources and comparative SWF case studies (primarily Norway and Singapore), the study highlights that Danantara can reduce inefficiencies in SOE capital allocation, strengthen domestic investment capacity, and lower reliance on foreign debt. Danantara’s structure mirrors successful international SWF models while adapting to Indonesia’s legal and institutional context. However, persistent risks such as political interference and governance gaps may hinder its long-term success. This literature-based approach allows a broad yet integrative view but is limited by the absence of empirical validation or field data. Strengthening legal safeguards and aligning SOE mandates with national industrial strategy emerge as critical steps toward Danantara’s effective implementation.
Co-Authors Amir Mahmud Husein, Amir Mahmud Andika Andika Antonio, Marco Bernanda, Devi Yurisca Clara, Monica Cokki, Cokki Hamonangan, Marcellius Kirana Ismail Hadisoebroto Dilogo Johanes Fernandes Andry Lie, Gunardi Livando, Nicholas Phan, Gary Rasji Rasji, Rasji Silalahi, Wilma Wijayati, Nureni