67 research outputs found
PENGARUH MODEL JARINGAN TERHADAP OPTIMASI ROUTING OPEN SHORTEST PATH FIRST (OSPF)
Get PDFABSTRAK Routing merupakan proses mengirim data dari satu network ke network lain. Dengan dynamic routing maka mekanisme routing dilakukan secara dinamis dengan menentukan jarak terpendek secara cepat dan akurat antara peralatan pengirim dan penerima. Open Shortest Path First (OSPF) merupakan salah satu protokol dynamic routing yang menggunakan algoritma link-state untuk membangun dan menghitung jalur terpendek ke semua tujuan yang diketahui. OSPF mendistribusikan informasi routing antara router-router autonomous system (AS). OSPF memiliki titik berat pada kinerja processor, kebutuhan memori dan konsumsi bandwidth. Oleh karena itu perlu mengoptimalkan kinerja protokol routing OSPF terutama masalah pengaruh bandwith dengan menentukan model dan area jaringan routing OSPF. Kata kunci : routing, rynamic routing, OSPF ABSTRACT Data sending processes from one to the other networks is called to be Routing. Using the dynamic routing, the routing mechanism is dynamically done by swiftly and accurately determining the shortest route between sender and receiver. One of the dynamic routing protocols is the Open shortest path first (OSPF) using link-state algorithm to build and count the shortest route to the all known destination. OSPF distributes routing information between system autonomous routers (AS). The focus of OSPF is in the processor activity, memory needs and bandwidth consumption. There are needs to optimize OSPF routing protocol activity by determining OSPF routing network area and model especially to the bandwidth influence. Key words: routing, dynamic routing, OSPF</jats:p
Perbandingan Metode Prediksi untuk Nilai Jual USD: Holt-Winters, Holt\u27s, dan Single Exponential Smoothing
No full textIn the ever-changing landscape of the global economy, the role of the United States Dollar (USD) as the backbone of the international financial system significantly influences market stability and dynamics. The close correlation between fluctuations in the USD exchange rate and internal and external factors demands effective prediction methods to understand and manage associated risks. This study aims to compare the performance of three main prediction methods: Single Exponential Smoothing (SES), Holt\u27s Method, and Holt-Winters Method, in forecasting USD exchange rates. Utilizing historical data from the Central Statistics Agency (BPS) and testing under three training data distribution scenarios (45%, 55%, and 75%), this research provides in-depth findings on the strengths and weaknesses of each prediction method. Performance evaluations include the time required, Mean Absolute Error (MAE), Mean Squared Error (MSE), Mean Absolute Percentage Error (MAPE), R-Squared, and correlation for the implementation of each method. If averaged, the results are as follows for SES, Holt’s, and Holt’s Winter, respectively: SES (1.58; 284.20; 68,768.26; 440.07; 0.03; -2.12; Nan), Holt’s (1.39; 890.23; 426,377.44; 1,043.28; 0.06; -24.28; -0.66), and Holt’s Winter (1.20; 997.45; 513,657.58; 1,168.00; 0.07; -30.62; -1.55). Overall, this indicates that the Holt-Winters Method stands out with significant performance, especially in scenarios with larger training data distributions, with a low R-Squared value (-4.618) and satisfactory correlation (0.417). Holt\u27s Method also shows improved accuracy, while Single Exponential Smoothing (SES) offers time efficiency, albeit with limitations in explaining data variations. In conclusion, this research provides valuable guidance for business stakeholders, investors, and policymakers in selecting prediction methods suitable for their data characteristics and analysis goals, with the potential for a positive impact on business strategies, competitiveness, and risk management amid the uncertainty of USD exchange rate fluctuations
A 'blessed asylum' or a utopian vision : the viability of a Protestant nunnery in early nineteenth-century England
No full textIn 1694, Mary Astell proposed the establishment of Protestant nunneries in England; in 1809, Helena Whitford reiterated the theme; yet, it was Lady Isabella King in 1816 who sought to put this radical idea into effect. A single, Irish, evangelically influenced gentlewoman, a younger daughter of the Earl of Kingston, she established the Ladies’ Association, a ‘conventual’ home for eighteen distressed gentlewomen at Bailbrook House in Bath in 1816, securing support for it from such influential figures as Queen Charlotte, William Wilberforce and Robert Southey. When Bailbrook House was sold in 1821, she relocated the Ladies’ Association to Clifton in Bristol, where its eventual failure in 1835 shattered her vision of establishing a national scheme of conventual homes that would benefit future generations of women.
Limited attention has yet been paid by historians to the role elite women played in creating and managing philanthropic institutions in the early nineteenth century, particularly those aimed at assisting other women in an urban setting. Some historians of philanthropy, such as Frank Prochaska, have identified an ‘explosion’ of early nineteenth-century female activity; however, elite women’s charitable contributions have tended to be understood as rural, concentrating on family estates. Kim Reynolds, who has addressed Victorian elite women’s philanthropy in an urban setting, maintains it functioned simply as a strand of elite women’s work.
This dissertation draws upon a previously unstudied collection of papers compiled and annotated by Lady Isabella King, which span the existence of the Ladies’ Association, in order to explore the nature of Lady Isabella’s involvement in this philanthropic venture and her understanding of her role. Thus it not only seeks to recover Lady Isabella as an important historical figure in the development of early nineteenth-century philanthropic ventures, something for which she was recognised by her contemporaries, but also to
examine the structure of her unique experimental institution and cast some light on the sorts of women who became its residents. By doing so, it provides a case study in the development and practical application of a philanthropic ideal. It examines the ways that Lady Isabella, quite a conventional elite single woman, used her status, her location and her networks to create and maintain the institution for nearly twenty years. It provides a valuable opportunity to examine a number of the problems she faced in establishing and running the institution, given the social and gendered milieu in which she was operating, and the strategies she employed to achieve her ends.
I argue that Lady Isabella’s elite status provided her with the wealth and access to influential social circles to make a difference, that her single status added independence to devote time to her cause and while she was initially beset with self-doubts about her competence to author and manage the project, she gradually gained confidence as she developed ways to implement and manage the institution. At the same time the groundbreaking nature of the Ladies’ Association, the consequent public criticism and a growing discordant atmosphere among the residents of the institution lead to its closure in 1835
Implementation of recurrent neural network for the forecasting of USD buy rate against IDR
Get PDFThis study implements a recurrent neural network (RNN) by comparing two RNN network structures, namely Elman and Jordan using the backpropagation through time (BPTT) programming algorithm in the training and forecasting process in foreign exchange forecasting cases. The activation functions used are the linear transfer function, the tan-sigmoid transfer function (Tansig), and the log-sigmoid transfer function (Logsig), which are applied to the hidden and output layers. The application of the activation function results in the log-sigmoid transfer function being the most appropriate activation function for the hidden layer, while the linear transfer function is the most appropriate activation function for the output layer. Based on the results of training and forecasting the USD against IDR currency, the Elman BPTT method is better than the Jordan BPTT method, with the best iteration being the 4000th iteration for both. The lowest root mean square error (RMSE) values for training and forecasting produced by Elman BPTT were 0.073477 and 122.15 the following day, while the Jordan backpropagation RNN method yielded 0.130317 and 222.96 also the following day.
Penggunaan Solar Tracker untuk Analisis Pencarian Daya Maksimal pada Panel Surya
Get PDFPermintaan sumber energi semakin meningkat, sedangkan sumber energi fosil seperti batu bara, minyak bumi dan gas alam semakin menipis. Dewasa kini, terdapat kebijakan untuk mengurangi emisi CO2 dari sumber energi menjadi sangat penting bagi para ahli ilmu lingkungan. Indonesia termasuk dalam negara beriklim tropis yang dimana mempunyai potensi energi surya yang tinggi dengan radiasi harian rata-rata sebesar 4 kWh/m2/hari. Pembangkit energi dari panel surya ini memperoleh banyak perhatian peneliti terutama pada faktor penyebab panel surya menjadi tren dunia, yaitu ketersediaan diseluruh dunia dengan nilai nol emisi gas rumah kaca. Daya keluaran dari panel surya menjadi masalah utama karena tidak konstan yang dipengaruhi oleh posisi kemiringan, penyinaran matahari, jenis sel surya dan sifat teknis modul. Panel surya akan bekerja secara maksimal dan efisien ketika jumlah partilkel cahaya maksimum dari matahari mengenai sel-selnya secara tegak lurus atau 90o. Untuk mengetahui waktu puncak dan kemiringan optimal panel surya dalam memproduksi daya dalam penelitian ini menggunakan solar tracker yang berfungsi untuk mengukur tegangan, arus, daya, kemiringan, azimuth dan intensitas cahaya yang diterima oleh panel surya secara otomatis dan real time. Dengan membandingkan panel surya jenis Polycrystalline dan Monocrystalline didapat waktu puncak panel surya menghasilkan daya maksimum yaitu pada pukul 11-13, dengan rata tegangan keluaran 11,43V, dengan rata-rata arus keluaran 54,05mA, dan rata-rata daya 0,62WATT menghadap utara. Dari pengambilan data selama lima hari, tegangan yang dihasilkan panel surya jenis monocrystalline lebih tinggi dan stabil dibandingkan panel surya polycrystalline
The effect of Problem-based Learning (PBL) with mockup media in learning programmable logic controller
Get PDFThis research aims to (1) examine the differences in learning outcomes of programmable logic controllers between cadets who use problem-based learning strategies assisted by mockup media and problem-based learning strategies, (2) examine the differences in learning outcomes of programmable logic controllers between cadets who have high and low initial abilities, and (3) examine the interaction effect between learning strategies and initial abilities on learning outcomes of programmable logic controllers. This research uses a 2 x 2 factorial design with the object of research being the 3rd-semester airport electrical engineering study program students at Aviation Polytechnic Surabaya. The sample of this research includes 47 students of the TLB 11 AB class as the experimental group of problem-based learning strategy assisted by mockup media and 46 students of the TLB 12AB class as the control group of problem-based learning strategy. A learning outcomes test collected the data on learning outcomes in the form of multiple choice. Learning outcomes data were analyzed using two-tailed ANOVA (analysis of variance). The results showed that there is a significant difference in learning outcomes of the programmable logic controller between cadets who learn using problem-based learning assisted by mockup media and problem-based learning, there is a significant difference in learning outcomes of the programmable logic controller between cadets who have high and low initial abilities, there is no interaction effect between learning strategies and cadets' initial abilities on learning outcomes of the programmable logic controller. This research can contribute to improving students' understanding and skills in the field of PLC. Through practical experience and relevant projects, students can develop a deeper understanding of PLC concepts and improve their technical skills in designing, implementing, and solving problems related to PLC systems
Rancang Bangun Website Prodi D3 Komunikasi Penerbangan Menggunakan Metode Prototype
Get PDFProgram studi Diploma 3 Komunikasi Penerbangan (Prodi D3 KP) selama ini telah memiliki page pada laman website resmi Politeknik Penerbangan Surabaya (Polekbang Surabaya) yaitu https://poltekbangsby.ac.id/program-studi/komunikasi-penerbangan/. Namun seiring dengan meningkatnya kebutuhan informasi dan data di Program studi Diploma 3 Komunikasi Penerbangan, pada penelitian ini dibangun dan dikembangkan Sistem informasi Program studi Diploma 3 Komunikasi Penerbangan berbasis website. Pada penelitian ini, proses bisnis sistem digambarkan dengan BPMN (Business Process Model and Notation). Sistem ini dibangun menggunakan CMS (Content Manajemen System) yang bersifat open source yaitu wordpress. Setelah sistem ini berjalan, dilakukan evaluasi terhadap kinerja sistem dengan menggunakan kerangka kerja PIECE
THE INFLUENCE OF ENGLISH LEARNING THROUGH RECEPTIVE SKILLS AND PRODUCTIVE SKILLS ON THE LISTENING MATERIAL CAPABILITY
Get PDFReflective learning is used to improve writing skills, and track the learning process regarding what students understand and what they do not understand. However, little research has explored the impact of reflective learning on students' critical thinking, especially in higher education. This study aims to fills the gap by exploring Indonesian EFL students in the seventh semester of using reflective learning in improving critical thinking skills and identifying their development of critical thinking skills through reflective learning. Questionnaires and students’ reflective learning are provided for data collection. The result reveal that from the questionnaire, reflective learning has an impact on students' critical thinking of 79.99%. Furthermore, it is also found that from students’ reflective learning participated in this study employed three development of critical thinking skills: 1) identify the strength, 2) recognize the weaknesses, and 3) find out the solution. Finding suggest that strategic use of reflective learning may enhance EFL critical thinking skills as well as maximize the achievement of their learning goals
Edukasi Perilaku Hidup Sehat dan Penggunaan Masker Kepada Masyarakat di Area Jalur Perkeretaapian Kabupaten Pasuruan
Get PDFIndonesia adalah salah satu negara yang dilanda krisis kesehatan akibat adanya penularan virus covid-19. Virus ini menyerang sistem pernapasan manusia sehingga menyebabkan gangguan pada sistem pernapasan. Pemerintah Indonesia berupaya memutus rantai penyebaran virus covid-19 ini dengan menerapkan protokol kesehatan salah satunya memakai masker dan mencuci tangan. Kasus covid-19 di Kabupaten Pasuruan sangat tinggi yaitu 3.575 kasus terkonfirmasi. Melihat kasus covid-19 yang terus meningkat, penulis melakukan sebuah kegiatan pengabdian kepada masyarakat yaitu edukasi perilaku hidup sehat dan penggunaan masker di area jalur perkeretaapian sebagai upaya pencegahan penyebaran covid-19.Kegiatan ini dilaksanakan pada tanggal 01-03 Juli 2021 diikuti sebanyak 60 orang. Metode pelaksanaan dilakukan dengan 3 tahap yaitu tahap perencanaan, pelaksanaan, dan evaluasi. Kegiatan ini memberikan edukasi perilaku hidup sehat, penggunaan masker yang baik dan benar, dan pembagian 1.000 masker kepada 80 orang.Masyarakat sangat antusias dalam pelaksanaan kegiatan ini. Hal ini dibuktikan dengan persentase respon sebesar 100% terhadap pentingnya perilaku hidup sehat sebelum melakukan aktifitas di dalam maupun di luar ruangan. Masyarakat dapat menerapkan perilaku hidup sehat dan penggunaan masker sebagai sebuah perilaku kemandirian dan kebiasaan dalam kehidupan sehari-hari untuk mencegah dan memutus mata rantai virus covid-1
Optimization of Website Based Facility Service System at Politeknik Penerbangan Surabaya
Get PDFTechnological developments, particularly in the Industry 4.0 era, accompanied by increasing technological literacy among the public, have influenced business operations, making them easier to develop and more widely known. Digital transformation innovations in facility services at the Politeknik Penerbangan Surabaya were carried out to improve administrative efficiency, information, and service speed. This study aims to develop a web-based facility service information system with the Laravel framework and online payments using the Midtrans payment gateway that can be accessed by internal and external users of the institution more easily and transparently. The development of this system uses the Waterfall Software Development Life Cycle (SDLC) method. The results of the study show that this system is able to manage facility data, transactions, availability, and transaction history in an integrated and real-time manner. The integration of Midtrans into the system not only makes transactions fast and secure, but also provides convenience and security protection for customers. The implementation of this system has been proven to increase efficiency, speed up the service process, minimize recording errors, while expanding service access for users from outside the institution easily and effectively. In addition, with the institution's digital development system, strategic decision-making has also become easie
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