eJournal Unika Atma Jaya (Universitas Katolik Indonesia)
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Pemanfaatan Analisis Sentimen Youtube untuk Prediksi Harga Saham: Studi pada Investor Retail Indonesia
No full textThe upswing in engagement from retail investors in the Indonesian stock market aligns with a significant rise in the use of various social media platforms as conduits for stock-related information. In particular, number of content creators shared information about stock in Youtube grows, the information including the effect of corporation actions at stock market. This study sought to leverage sentiment data extracted from particular videos to predict the stock closing prices, especially at the corporate action event using Long Short-Term Memory (LSTM) and Bidirectional LSTM (Bi-LSTM) models. In this study also included several classification algorithm result to explore the accuracy in the prediction models. The result indicate that while sentiment from Youtube serves a viable variable for prediction, the Bi-LSTM model shows better performance compared to the based model in forecasting stock prices surrounding corporate action dates. Furthermore, the combination with classification algorithms shows an improvement in refining predictions, where demonstrate a potential accuracy score when incorporated into the predictive model.
This research contributes insights the potential value using sentiment from Youtube platform and machine learning models to predict the time series data, especially in stock market. The findings hold significance for Indonesian retail investors seeking an alternative decision-making tools within the dynamic stock market landscape.Lonjakan partisipasi investor ritel dalam pasar saham Indonesia seiring dengan meningkatnya jumlah platform media sosial sebagai sumber informasi terkait saham. Khususnya di YouTube, semakin banyak pencipta konten yang menyebarkan wawasan tentang saham, termasuk aksi korporasi yang relevan. Penelitian ini bertujuan untuk memanfaatkan data sentimen yang diekstraksi dari video YouTube tertentu untuk memprediksi harga penutupan saham khususnya selama aksi korporasi, dengan menggunakan model Long Short-Term Memory (LSTM) dan Bidirectional LSTM (Bi-LSTM).
Studi ini tidak hanya fokus pada penggunaan sentimen dari video YouTube sebagai variabel prediktif, tetapi juga meliputi analisis tambahan yang melibatkan berbagai algoritma klasifikasi untuk meningkatkan akurasi prediksi. Hasil penelitian menunjukkan bahwa sementara sentimen dari YouTube merupakan variabel yang dapat digunakan untuk prediksi, model Bi-LSTM lebih unggul daripada LSTM dalam memprediksi harga saham seputar tanggal aksi korporasi. Selain itu, integrasi algoritma klasifikasi menunjukkan potensi untuk meningkatkan prediksi, menunjukkan kemungkinan peningkatan skor akurasi ketika diintegrasikan ke dalam model prediksi.
Penelitian ini memberikan wawasan tentang efektivitas analisis sentimen dari konten YouTube dalam memprediksi harga saham selama aksi korporasi, menyoroti potensi nilai penggunaan model Bi-LSTM dan dampak positif integrasi algoritma klasifikasi untuk meningkatkan akurasi prediksi. Temuan ini memiliki signifikansi bagi investor ritel Indonesia yang mencari alat pengambilan keputusan yang lebih baik dalam lanskap pasar saham yang dinamis
Perbaikan Kurva Beban Harian pada Industri Kecil: Studi Kasus PT. X
Get PDFThis paper presents the improvement of daily load and load balance curve of home-scale garment industry with the study case in PT. X. Research is started with load measurement on every machine, proceeded by plotting schedule of each machine. The next step is rescheduling daily load and per-phase load balancing. Initial data shows unbalance load sharing between phase with the average load of 4916 kW and standard deviation of 2077. After being rescheduled and phase rearrangement, the interphase load sharing is more balance, with the average load of 4903 kW and standard deviation of 952.Makalah ini membahas analisis kurva beban harian dan kesetimbangan beban pada industry garment skala rumah tangga dengan mengambil studi kasus PT. X. Penelitian dilakukan dengan mengukur pemakaian listrik di setiap peralatan, dilanjutkan dengan membuat grafik jadwal pemakaian setiap peralatan. Selanjutnya dilakukan penjadwalan ulang kerja harian dan pengaturan ulang pembagian beban 1 fasa. Perhitungan awal menunjukkan terjadi ketidakseimbangan antar fasa dengan beban rata-rata 4916kW dan simpang baku 2077. Setelah dilakukan penjadwalan dan pemindahan fasa didapatkan pembagian beban yang lebih seimbang dengan beban rata-rata 4903 dan simpang baku 952
Penurunan Kualitas Air Reverse Osmosis Selama Penyimpanan Ditinjau dari Kontaminasi Bakteri
Get PDFTeknologi Reverse Osmosis merupakan salah satu metode untuk mengolah dan memurnikan air agar dapat dikonsumsi. Salah satu faktor yang dapat mempengaruhi kebersihan air merupakan cara penyimpanannya. Oleh karena itu, akan dilakukan evaluasi salah satu sumber air RO di daerah Jakarta Utara untuk menilai pertumbuhan bakteri dari sumber air tersebut dalam jangka waktu tertentu. Tujuan utama penelitian ini adalah untuk memastikan apakah air RO aman dikonsumsi jika disimpan dalam jangka panjang. Sampel air dibagi menjadi 3 kelompok. Sampel 1 diambil dengan cara steril dan disimpan dalam wadah steril. Sampel 2 ditampung dalam botol lalu dituang ke gelas. Sampel 3 langsung ditampung dalam botol. Profil bakteri dari air RO akan diuji dengan teknik pour plate menggunakan media Nutrient Agar dan pengamatan akan dilakukan pada hari ke-0, 7, dan 11. Untuk sampel 1 tidak ditemukan adanya pertumbuhan bakteri pada hari ke-0, namun terdapat pertumbuhan bakteri pada hari ke-7 dan 11. Untuk sampel 2 dan 3, ditemukan adanya pertumbuhan bakteri mulai dari hari ke-0 sampai 11. Jika sampel 3 dan sampel 2 dibandingkan, dapat diamati bahwa jumlah bakteri pada sampel 3 lebih sedikit dibandingkan sampel 2. Berdasarkan hasil pengamatan tersebut, dapat dilihat bahwa cara penyimpanan sampel dapat mempengaruhi jumlah bakteri. Untuk sampel 3, air langsung disimpan dalam botol saja sedangkan untuk sampel 2, air masih dituang lagi dari botol ke dalam gelas sehingga kemungkinan terjadi kontaminasi silang lebih besar. Lalu, dapat diamati juga bahwa jumlah bakteri yang tumbuh akan semakin banyak seiring berjalannya waktu. Ini dapat terjadi karena wadah sering dibuka tutup sehingga dapat terjadi kontaminasi bakteri dari lingkungan sekitar yang lebih banyak. Berdasarkan hasil penelitian, dapat disimpulkan bahwa air RO tidak bisa digunakan untuk penyimpanan jangka panjang karena terjadi peningkatan pertumbuhan bakteri sehingga menjadi tidak aman untuk diminum
DAMPAK EKONOMI KEJAHATAN SKEMA PIRAMIDA
Get PDFSkema Piramida merupakan salah satu sistem bisnis ilegal yang menimbulkan kerugian banyak orang. Di Indonesia dan di dunia, Skema Piramida ini sudah dilarang berjalan dan terdapat sanksi dalam menjalankan skema ini. Melihat skema yang dijalankan dalam Skema Piramida yang menimbulkan kerugian bagi investor (korban), permasalahan mulai muncul yaitu sehubungan dengan dampak terhadap perekonomian negara akibat kejahatan Skema Piramida. Sehingga tulisan ini bertujuan untuk melihat bagaimana dampak perekonomian negara yang ditimbulkan akibat kejahatan Skema Piramida ini. Metode penelitian yang akan digunakan dalam penulisan ini adalah yuridis normatif. Hasilnya, ternyata kejahatan Skema Piramida ini menimbulkan kerugian bagi perekonomian negara karena terhambatnya pertumbuhan negara. Dalam analisisnya, kerugian ekonomi dialami oleh negara Albania dan Romania. Dimana tingkat inflasi negara-negara tersebut terjadi akibat perputaran uang yang cepat, dan tingginya permintaan barang. Oleh karena itu, semakin banyak masyarakat yang berpartisipasi dalam skema ini, perekonomian akan semakin terhenti.Pyramid Scheme is one of the illegal business systems that cause losses to many people. In Indonesia and in the world, this Pyramid Scheme has been banned from running and there are sanctions for running this scheme. Looking at the scheme run in the Pyramid Scheme, which causes losses to investors (victims), problems began to arise, namely in connection with the impact on the country's economy due to the crime of the Pyramid Scheme. So that this paper aims to see how the state's economic impact is caused as a result of this Pyramid Scheme crime. The research method that will be used in this writing is normative juridical. As a result, it was found that in fact this Pyramid Scheme crime caused losses to the country's economy because the country's growth was hampered. In the analysis, economic losses were experienced by the countries of Albania and Romania. Where the inflation rate of these countries occurs as a result of fast money turnover, and high demand for goods. Therefore, the more people participate in this scheme, the more the economy comes to a standstill.
Keywords: Pyramid Scheme, Economy, Losses
Pemilihan Supplier Kedelai dengan Metode AHP Dan TOPSIS (Studi Kasus UKM Tahu Pak Wit Di Desa Ledok Kulon, Bojonegoro)
Get PDFRaw materials as the most important factors in production activities, are obtained from suppliers. Suppliers are partners who ensure the availability of raw materials for the continuity of the company's production. Therefore, it is necessary for companies to choose the right supplier. The problem that occurs in Pak Wit's Tofu SME is that SMEs often change suppliers in procuring soybean raw materials because the SMEs do not have a fixed soybean supplier. This fact results in no certainty of raw materials from the supplier so that SMEs often experience a shortage of quality raw materials. This study aims to select the best supplier according to the criteria set by SMEs. There are 4 suppliers who are candidates with 4 criterias (price, quality, service and flexibility in delivery) used in choosing the best supplier. This research uses AHP to weight the criteria and TOPSIS to rank suppliers. The results of calculations with AHP found that the quality criteria were the first priority, with a value of 0.58. While with the TOPSIS method it was found that supplier 2 was the selected supplier with the highest preference of 0.941
Assessing the Correlation between Spicy Food Consumption and Dyspepsia Symptoms in Medical and Health Students at Atma Jaya Catholic University of Indonesia
Get PDFIntroduction: The capsaicin (8-methyl-N-vanillyl-6-nonenamide) content in spicy foods can trigger irritation and increase gastric acid production, which potentially damages the stomach mucous layer by increasing chloric acid levels (HCl). It is known that dyspepsia has a variety of causes and one of them can be triggered by the consumption of irritating foods, such as spicy foods. Therefore, the research was conducted to determine whether there was a significant relationship between the consumption of spicy foods and the incidence of dyspepsia in students of the Faculty of Medicine and Health Sciences at the Atma Jaya Catholic University of Indonesia.
Methods: This research method is an analytical observational study using cross-sectional methods. The main variables in this study were dyspepsia, measured using the Rome III questionnaire, and the frequency of spicy food consumption measured using the Food Frequency Questionnaire (FFQ). The sample consisted of 107 people randomly selected. The data was analyzed statistically using the Fischer Exact test.
Results: This study showed that 56.1% of respondents frequently eat spicy foods, while the majority, as much as 95.3%, also have dyspepsia. There was a significant correlation between spicy eating habits and dyspepsia, with a p-value of 0.014 (p<0.05).
Conclusion: The results showed a statistically significant relationship between spicy eating habits and dyspepsia, so it is recommended for students to reduce spicy food consumption as it can affect the onset of dyspepsia.
Keywords: dyspepsia - spicy foods - stomach - Rome III questionnaire - food frequency questionnair
Pemanfaatan Limbah Sampah Plastik Kota Bangkalan sebagai Bahan Baku Genteng dengan Menggunakan Mesin Hotpress
Get PDFPlastic waste is a waste that is difficult to decompose, and plastic waste is a problem that until now has not been resolved by the Indonesian government, especially the local government of Bangkalan Regency. The Bangkalan Environmental Agency (DLH) stated that in 2022, there will be around 100 tons/year of potential waste generated. As a result of the waste generation data, DLH experienced complaints about the increasing use of plastic and was not balanced with plastic waste management. This activity aims to provide alternative utilization of plastic waste in the form of HDPE plastic-based roof tiles using a pneumatic hotpress machine made by students of the Industrial Engineering Manufacturing Laboratory, Trunojoyo University Madura. With this alternative waste utilization opportunity, it is not only one of the solutions to reduce plastic waste, but also can be used as a business opportunity by Bangkalan residents
Sosialisasi dan Implementasi Aplikasi Pemesanan Barang Berbasis Android di UMKM “Mulya PS”
Get PDFUMKM Mulya PS Shop is a business that sells pet food. The problem faced by the Mulya PS Shop owner is that the shop still uses a sales and service system using manual methods, such as using notes. This problem results in an inaccurate number of orders and income results. As well as problems for consumers, where consumers have to come and order directly at the shop. This makes it difficult for consumers or customers who want to order remotely or outside the area. So based on the problems above, it is necessary to design an information system for making an Android-based goods ordering application and provide socialization of the Android-based goods ordering application to help Mulya PS Shop business owners have complete information and an easy and fast transaction system. By socializing the Android-based application information system, it can help accelerate technology transfer to Mulya PS stores. The application that has been created has fulfilled the purpose of service, namely helping MSME owners and customers, in the goods ordering system and transactions. And the socialization activities have been successfully carried out with good results and are very good at conveying the material and objectives. It is hoped that with this service activity, there will be integration between the Community Service Program and the final assignment courses
Kegiatan Pengabdian Masyarakat sebagai Pembicara dalam Webinar Ngobrol Bareng Legislator “Berinternet Secara Sehat”
Get PDFThis community service activity is to provide an explanation regarding various health problems due to smartphone use in digital era. There were three speakers who presented various topics related to healthy internet usage. During presentation, various physical illness related to long-term use of mobile phones were mentioned. Negative aspects from a psychological and social perspective are also discussed. All are caused by a combination of long duration of use, awkward posture and static posture. In the end session, a few suggestions were given to reduce the negative impact of celluler phone usage on physical health. This webinar could be watched via youtube channe
Pemeriksaan Kesehatan dan Pengobatan pada Anak-Anak Komunitas Pemulung di TPU Pondok Kelapa
Get PDFKesehatan perkotaan menjadi fokus kegiatan pengabdian kepada masyarakat Fakultas Kedokteran dan Ilmu Kesehatan Universitas Katolik Indonesia Atma Jaya (FKIK UAJ). Bekerjasama dengan Persatuan Alumni Kedokteran (Plataran) Atma Jaya dan Lembaga Daya Dharma Keuskupan Agung Jakarta (LDD KAJ), kami melayani masyarakat kecil, lemah, miskin, marginal, dan penyandang disabilitas khususnya di wilayah KAJ. Kami bertujuan untuk mewujudkan hak anak atas kesehatan, pendidikan, pengajaran (pendidikan informal), identitas hukum, dan perlindungan dari kekerasan dan eksploitasi. Kita mengacu pada Undang-Undang Nomor 35 Tahun 2014 tentang Perlindungan Anak. Kita memaksimalkan pertumbuhan, perkembangan, dan kesehatan anak dan mengoptimalkan perkembangan fisik dan mentalnya. Kegiatan tersebut meliputi pemeriksaan kesehatan, edukasi, dan pemberian makanan bergizi kepada anak-anak komunitas pemulung di kawasan TPU Pondok Kelapa, Jakarta Timur. Jumlah peserta kegiatan sebanyak 77 orang, dengan rincian 59 orang (76,63%) anak di bawah 12 tahun dan 18 orang (23,37%) peserta di atas 12 tahun. Hasil pemeriksaan dokter, dari 77 peserta, anak sehat sebanyak 11 orang (14,3%), dan penyakit yang paling banyak diderita adalah ISPA (Infeksi Saluran Pernafasan Akut) sebanyak 14 orang (18,18%) dan nasofaringitis sebanyak 13 orang (16,9%). Kegiatan bakti sosial kolaboratif ini memberikan dampak positif bagi orang tua dan anak untuk lebih sadar akan kesehatan, khususnya mengenai pentingnya gizi bagi tumbuh kembang anak.