Portal Jurnal Universitas Serang Raya
Not a member yet
3166 research outputs found
Sort by
Empowering Cadres in the Practice of Infant and Child Feeding Improve Nutritional Status of Children
Get PDFCommunity-based interventions are necessary to reduce the number of children under five who experience weight faltering, underweight, and wasting in the Mesjid subdistrict of Samarinda City to prevent them from developing stunting. This activity aimed to train health cadres in Infant and Young Child Feeding (IYCF) and provide supplementary food based on local foods to children under five with nutritional problems. The activity was conducted in two stages: the first was IYCF training for cadres with a total of 63 participants, and the second was providing supplementary food to 28 target children. The activities were evaluated using knowledge questionnaires for the cadres and weight measurements after one week of supplementary feeding interventions and IYCF education for the children. The results of the community service showed an increase in cadre knowledge related to IYCF, with the majority previously in the poor category (60.3%) improving to a majority in the adequate category (65.1%) after the training. There was also an increase in the weight of children who received local food-based supplementary feeding, with the average weight increasing from 10.15 kg in the pretest to 10.54 kg in the posttest. This activity proved beneficial in improving the knowledge of cadres and the weight of children, and it is hoped that the subdistrict, health centers, and cadres will commit to being responsible for monitoring and evaluating the sustainability of the activities
Development and Application of Eco Enzyme for Household Organic Waste Management in Kampung Lio Area, Depok
Get PDFOrganic food waste accounts for the largest category of waste, comprising 40.8% according to data from the National Waste Management Information System (SIPSN). The high volume of this waste encourages alternatives for utilizing and processing household waste. One alternative method is producing an eco-enzyme, a liquid resulting from the fermentation of leftover fruits and vegetables. Its numerous uses and benefits have led to eco-enzyme development as an alternative method for processing household organic waste. To introduce this method, a Community Service (PKM) activity themed \u27Development and Application of Eco Enzyme for Household Organic Waste Management\u27 was conducted in the Kampung Lio area, Depok. This activity aims to enable the residents of Kampung Lio, Depok, to process their organic waste into eco enzyme and utilize it for various daily needs, such as floor cleaner, vegetable and fruit wash, insect repellent, plant fertilizer, disinfectant, laundry soap, bath soap, shampoo, toilet cleaner, and many other uses. After this activity, all participants started to implement their knowledge by processing their household organic waste into an eco enzyme because it has many benefits and simultaneously processed household waste
Empowering the Community with Briquette Fuel: Utilizing Palm and Sago Waste
Get PDFIn Suskun Village, waste from palm oil and sago pulp is abundant. This waste is not only an environmental issue but also a challenge for the local community in terms of management. This community service program aims to train the community in producing briquettes as an environmentally friendly alternative fuel from these waste materials. Additionally, the program seeks to teach the community how to calculate the selling price of briquettes, enabling them to achieve economic independence in running their briquette business. The methods used in this program include: a) Socialization on briquette production from palm oil and sago pulp waste, b) Training on briquette-making through practical workshops, c) Implementation of technology by the community, d) Assistance and evaluation of the briquette production process, e) Sustainability of the program as a briquette business for the Suskun Village community, and f) Active community participation in all program stages. Throughout the activity, mentoring and evaluation of production outcomes were conducted to ensure the sustainability of the briquette business, allowing it to grow into a viable enterprise for the community. This program has yielded positive results, as the community can now independently produce briquettes from palm oil and sago pulp waste. This initiative creates economic opportunities and helps reduce waste in Suskun Village
Penyelesaian Persamaan Diferensial Biasa dengan Metode Euler dan Heun Menggunakan Microsoft Excel
Get PDFAbstrak
Tujuan dari penelitian ini adalah untuk mengkaji Microsoft excel dalam menyelesaikan persamaan diferensial biasa (PDB) secara numerik menggunakan metode Euler dan metode Heun, baik kelebihan maupun kekurangnnya. Penelitian ini merupakan penelitian kualitatif dengan pendekatan studi kasus. Data diperoleh dari berbagai sumber seperti buku, artikel ilmiah dan berbagai sumber digital lainnya yang relevan dengan topik penelitian. Analisis data meliputi penentuan soal persamaan diferensial biasa kemudian diimplementasikan secara sistematis dalam Microsoft excel. Hasil penelitian menunjukkan bahwa Microsoft excel terbukti dapat digunakan sebagai alat bantu yang efektif dalam menyelesaikan Persamaan Diferensial Biasa (PDB) secara numerik. Namun, pada implementasinya memiliki kelebihan dan kekurangan.
Kata kunci: Metode euler, metode heun, persamaan diferensial biasa, Microsoft excel
Abstract
The purpose of this research is to examine Microsoft Excel in solving ordinary differential equations (ODEs) numerically using the Euler method and the Heun method, both its advantages and disadvantages. This research is conducted as a qualitative study with a causal approach. Data were obtained from various sources such as books, scientific articles, and other relevant digital sources related to the research topic. Data analysis includes the determination of ordinary differential equation problems, which are then systematically implemented in Microsoft Excel. The research results show that Microsoft Excel has proven to be an effective tool in numerically solving Ordinary Differential Equations (ODEs). However, in its implementation, it has advantages and disadvantages..
Keywords: Euler Method, Heun Method, Ordinary Differential Equations, Microsoft Excel
Implementasi Interpolasi Polinomial Bentuk Baku dan Metode Selisih Terbagi Newton Menggunakan Excel dan Google Colab
No full textAbstrak
Penelitian ini bertujuan menganalisis serta membandingkan efektivitas penerapan metode interpolasi polinomial bentuk baku dan metode selisih terbagi Newton memakai dua perangkat bantu: Microsoft Excel dan Google Colab. Interpolasi polinomial adalah cara numerik yang dipakai guna menaksir nilai fungsi dari titik-titik data khusus. Penelitian ini menggunakan suatu pendekatan kualitatif dengan suatu metode studi literatur untuk mengkaji teori, algoritma, serta penerapan praktis dari masing-masing metode tersebut. Hasil analisis menunjukkan bahwa kedua metode tersebut mampu memberikan hasil yang akurat, namun efektivitas dari keduanya dipengaruhi oleh media yang digunakan. Microsoft Excel lebih mudah digunakan dalam perhitungan sederhana serta visualisasinya, sedangkan Google Colab unggul dalam hal fleksibilitas, efisiensi perhitungan, dan kemampuan mengelola data yang lebih kompleks dengan Python. Penggunaan interpolasi orde lebih tinggi sering kali terbukti memberikan galat yang lebih kecil. Ini menunjukkan tingkat akurasi yang meningkat secara umum. Penelitian ini memberikan kontribusi besar dalam memberikan panduan praktis bagi para pendidik serta para pelajar dalam memilih suatu metode dan suatu perangkat bantu yang sesuai untuk menyelesaikan persoalan numerik interpolasi polinomial.
Kata kunci: Google Colab, Interpolasi Polinomial Newton, Microsoft Excel, Selisih Terbagi.
Abstract
This research aims to analyze and compare the effectiveness of applying the standard form polynomial interpolation method and the Newton divided difference method using two tools: Microsoft Excel and Google Colab.Polynomial interpolation is a numerical method used to estimate the value of a function from specific data points.This research uses a qualitative approach with a literature study method to examine the theory, algorithms, and practical applications of each of these methods.The analysis results show that both methods are capable of providing accurate results, but the effectiveness of each is influenced by the medium used.Microsoft Excel is easier to use for simple calculations and visualizations, while Google Colab excels in terms of flexibility, computational efficiency, and the ability to manage more complex data with Python.The use of higher-order interpolation often proves to yield smaller errors.This indicates an overall increase in accuracy.This research makes a significant contribution by providing practical guidance for educators and students in selecting an appropriate method and tool to solve numerical polynomial interpolation problems.This research makes a significant contribution by providing practical guidance for educators and students in selecting an appropriate method and tool to solve polynomial interpolation numerical problems.
Keywords: Google Colab, Polynomial Interpolation Newton, Microsoft Exce, Divided Differences
Miskonsepsi Matematika Siswa Sekolah Dasar pada Materi Bangun Datar ditinjau dari Teori Humanistik
Get PDFAbstrak
Penelitian ini bertujuan untuk mengidentifikasi miskosenspsi matematika siswa sekolah dasar pada materi bangun datar ditinjau dari teori humanistik. Metode yang digunakan dalam penelitian ini adalah penelitian kualitatif deskriptif eksploratif. Penelitian ini melibatkan 3 siswa kelas IV dari SDN Dukuh Kupang II Surabaya, dengan tingkatan nilai yang berbeda yaitu tinggi, sedang, dan rendah. Instrumen yang digunakan yaitu tes tulis matematika, wawancara, dan observasi. Teknik analisis data menggunakan triangulasi teknik. Uji analisis data menggunakan uji kredibilitas, uji transferbilitas, uji dapendabilitas, dan uji konfirmablitas Indikator miskonsepsi yang dianalisis yaitu, miskonsepsi teoritikal, miskonsepsi klasifikasional, dan miskonsepsi klasifikasional. Hasil penelitian menunjukkan bahwa teori humanistik menyebabkan miskonsepsi pada siswa, yang dipengaruhi oleh kebutuhan rasa cinta dan kasih sayang, kebutuhan akan harga diri, dan kebutuhan aktualisasi diri.
Kata kunci: Miskonsepsi, Teori Humanistik, Bangun Datar
Abstract
This research aims to identify mathematics misconceptions among elementary school students on the topic of flat shapes from a humanistic theory perspective. The method used in this research is exploratory descriptive qualitative research. This study involves 3 fourth-grade students from SDN Dukuh Kupang II Surabaya, with different levels of achievement: high, medium, and low. The instruments used are mathematics written tests, interviews, and observations. The data analysis technique employs triangulation of techniques. The data analysis tests include credibility testing, transferability testing, dependability testing, and confirmability testing. The indicators of misconceptions analyzed consist of theoretical misconceptions, classificational misconceptions, and classificational misconceptions. The results show that humanistic theory causes misconceptions among students, which are influenced by the needs for love and affection, the need for self-esteem, and the need for self-actualization.
Keywords: Misconceptions, Humanisthic Theory, Flat Shape
Analisis Dampak Lingkungan Dari Kebijakan PengelolaanSampah di Kota Bandung
Get PDFPermasalahan sampah yang terjadi di Kota Bandung menimbulkan berbagai kebingungan dan dampak negatif akibat penumpukan sampah. Hal ini disebabkan oleh penerapan kebijakan pengelolaan sampah yang tidak tepat oleh Dinas Lingkungan Hidup Kota Bandung, sehingga mengakibatkan menumpuknya sampah dalam jumlah besar di pinggir jalan dan lahan yang belum dikembangkan di Kota Bandung. Permasalahan sampah di Kota Bandung juga disebabkan oleh kurangnya sosialisasi pengelolaan sampah yang dilakukan secara terus menerus oleh Dinas Lingkungan Hidup. Selain itu, sarana dan prasarana pengangkutan sampah di Kota Bandung belum memadai, dan banyaknya sampah yang menumpuk di Kota Bandung menyebabkan kurangnya truk pengangkut sampah di Kota Bandung. Permasalahan lain juga terjadi pada birokrasi jasa lingkungan. Hal tersebut adalah kurangnya kerjasama dan koordinasi dengan organisasi masyarakat Kota Bandung, pemerintah daerah, dan UPT Kota Bandung dalam menangani penumpukan sampah di Kota Bandung. Subyek penelitian ini adalah sektor kebersihan jasa lingkungan yang berhubungan langsung dengan implementasi kebijakan pengelolaan sampah di Kota Bandung. Metode penelitian yang digunakan adalah deskriptif dengan pendekatan kualitatif.Penelitian deskriptif melibatkan identifikasi kondisi atau situasi tertentu dan upaya menjelaskan fenomena sosial tertentu. Hasil yang dicapai dari penerapan kebijakan pengelolaan sampah di bidang pengelolaan limbah padat dan limbah B3 di Dinas Lingkungan Hidup (DLH) Kota Bandung bergantung pada faktor-faktor seperti kebijakan yang diterapkan, upaya pengawasan dan penegakan hukum, serta masyarakat setempat. bisa beragam
Manajemen Pemerintah Daerah Dalam Penyediaan Ruang Publik Taman Kota Sebagai Ruang Terbuka Hijau Berkelanjutan Di Kecamatan Bandung Wetan
Get PDFThis study aims to analyze the role of local government management in the provision of urban park public spaces as part of sustainable Green Open Space (GOS) in Bandung Wetan District, Bandung City. GOS plays a vital role in enhancing environmental quality and urban community well-being. This research employs a descriptive qualitative method using literature review and secondary data documentation obtained from journals, regulations, and visual observation of urban parks. The findings indicate that although the number of urban parks in Bandung Wetan District is relatively high (59 parks), their quality and sustainability in terms of management remain challenging. Several parks have not fully fulfilled their ecological, social, and aesthetic functions in accordance with sustainability principles. Key issues include weak planning that fails to consider environmental carrying capacity, overlapping institutional coordination, limited facilities, and a lack of monitoring and community participation. Therefore, it is essential to strengthen integrated planning, enhance cross-sectoral coordination, optimize the use of governmental resources, and implement participatory oversight to support the sustainability of urban parks as functional and inclusive green open spaces. This study recommends the development of adaptive and collaborative management strategies to address both ecological and social challenges in urban areas.
Keywords: Local Government Management, Urban Parks, Green Open Space, Sustainability, Bandung Wetan
IMPLEMENTATION OF CRM SYSTEM ON SALES OF COSMETIC SUPPLIES AND ACCESSORIES AT BERKAH JAYA KHALISA STORE
Get PDFIn today\u27s digital era, the development of information technology is increasingly rapid and has a major impact on various sectors, including in the fields of business and trade. Customer Relationship Management (CRM) is a strategy used by companies to manage interactions with customers, with the aim of improving customer relationships, satisfaction, and loyalty. And for the problems that often occur in business owners of the Berkah Jaya Khalisa store, such as in the sales promotion section there is no, the store\u27s income and expenditure reports are also not recorded. The transaction process used by the store still uses traditional methods, for example if there is a purchase of goods that are sold, the store owner must first record it on the invoice for the goods sold. The method used in this study is a qualitative method, namely a method that leads to in-depth understanding, by obtaining data through interviews and observations. The purpose of this study is to increase the efficiency of the sales process and expand the reach of the store\u27s market through a system that can be accessed by customers from various regions, design a web-based CRM system that can facilitate the Berkah Jaya Khalisa Store in managing customer data and Assist sales through the website on the Berkah Jaya Khalisa store in increasing product sales turnover. And for the conclusions that can be drawn through the research that has been done, among others, such as the implementation of the CRM method at the Berkah Jaya Khalisa store, customers find it easier to find information about products and what items are available in the store. And customers can make orders online without having to come directly to the Berkah Jaya Khalisa Store
IMPLEMENTASI SMART CONTRACT PADA E-VOTING DENGAN METODE PEER-TO-PEER BLOCKCHAIN ETHEREUM
Get PDFPerkembangan teknologi yang semakin berkembang banyak mengubah sistem yang telah ada diberbagai bidang, salah satu contoh perubahan yaitu sistem voting atau pemungutan suara. Di negara demokratisseperti indonesia sistem pemungutan suara sangat penting karena menjadi sarana masyarakat untuk menyuarakanhak-hak seperti contoh untuk memilih presiden atau wakil-wakil rakyat negara. Disamping itu sebagianpemungutan suara atau voting dilakukan dengan cara konvensional yaitu menggunakan kertas untuk menentukanpilihan sampai perhitungan hasil akhir suara, hal itu dapat menghabiskan biaya yang sangat banyak dan prosesperhitungan yang sangat lama dalam pelaksanaanya. Oleh karena itu, untuk menjawab permasalahan tersebutdirancanglah sistem e-Voting yang memanfaatkan teknologi smart contract dan blockchain. Dengan perjanjiandigital (smart contract) yang dibuat dengan bahasa pemrograman solidity, perjanjian tersebut tidak bisa diubahalurnya (paten) jika sudah diterapkan di blockchain. Setiap transaksi atau data suara pemilihan masuk maka akandilakukan hashing dengan menggunakan algoritma sha-256 (dimana sampai saat ini hash dengan sha-256 belumada yang mampu memecahkannya) dan kemudian akan membentuk suatu rantai block yang saling terhubung(peer-to-peer) di jaringan blockchain tersebut. Sehingga dengan memanfaatkan teknologi ini, data pemungutansuara yang telah dilakukan tidak dapat diubah, digandakan atau bahkan dihapus