213 research outputs found
ARIES 2018 : infrastructure, innovation, outreach
Get PDFThis article has two outreach aims. It concisely summarizes the main research and technical efforts in the EC H2020 ARIES Integrating Activity – Accelerator Research and Innovation for European Science and Society [1] during the period 2017/2018. ARIES is a continuation of CARE, TIARA and EuCARD projects [2-3]. The article also tries to show these results as an encouragement for local physics and engineering, research and technical communities to participate actively in such important European projects. According to the author’s opinion this participation may be much bigger [4-27]. All the needed components to participate – human, material and infrastructural are there [4,7]. So why the results are not satisfying as they should be? The major research subjects of ARIES are: new methods of particles acceleration including laser, plasma and particle beam interactions, new materials and accelerator components, building new generations of accelerators, energy efficiency and management of large accelerator systems, innovative superconducting magnets, high field and ultra-high gradient magnets, cost lowering, system miniaturization, promotion of innovation originating from accelerator research, industrial applications, and societal implications. Two institutions from Poland participate in ARIES – these are Warsaw University of Technology and Institute of Nuclear Chemistry and Technology in Warsaw. There are not present some of the key institutes active in accelerator technology in Poland. Let this article be a small contribution why Poland, a country of such big research potential, contributes so modestly to the European accelerator infrastructural projects? The article bases on public and internal documents of ARIES project, including the EU Grant Agreement and P1 report. The views presented in the paper are only by the author and not necessarily by the ARIES
PENGARUH EKSTRAK KASAR TANIN DARI DAUN BELIMBING WULUH (Averrhoa bilimbi L.) PADA PENGOLAHAN AIR
No full textAir bersih merupakan kebutuhan yang sangat penting bagi manusia, air
sering dimanfaatkan untuk keperluan sehari-hari dan untuk keperluan industri.
Oleh karena itu diperlukan pengelolaan dan perlindungan sumber daya air secara
seksama. Pencemaran lingkunga pada prosesnya dapat menyebabkan kekeruhan
pada air disekitar lingkungan tersebut. Kekeruhan sering disebabkan oleh partikelpartikel
koloid. Partikel koloid sulit dipisahkan dengan filtrasi biasa karena
ukuran partikel yang cukup kecil. Untuk menghilangkannya dapat menambahkan
koagulan. Koagulasi adalah peristiwa pembentukan partikel-partikel kecil
menggunakan zat koagulan. Sedangkan flokulasi merupakan peristiwa
pengumpulan partikel-partikel kecil hasil koagulasi menjadi flok yang lebih besar
sehingga cepat mengendap. Dengan menggunakan biokoagulan dan bioflokulan
yang berasal dari tumbuhan dan hewan diharapkan dapat digunakan sebagai
alternatif untuk mengganti polielektrolit sintetik.
Hasil penelitian Sa’adah (2010) menunjukkan bahwa daun belimbing
wuluh (A. bilimbi L.) mengandung tanin. Tujuan dari penelitian ini adalah (1)
mengetahui pH dan konsentrasi optimum koagulan FeCl3
dan FeSO
dalam proses
pengolahan air.; (2) mengetahui pengaruh ekstrak kasar tanin dari daun belimbing
wuluh (A. bilimbi L.) yang digunakan sebagai koagulan dalam proses pengolahan
air.; (3) mengetahui pengaruh penambahan ekstrak kasar tanin daun belimbing FeSO
dalam proses pengolahan air (parameter yang digunakan dalam proses
pengolahan air meliputi pH, kekeruhan, padatan terlarut dan konduktivitas).
4
Tanin diperoleh dari proses ekstraksi daun belimbing wuluh (A. bilimbi L.)
dengan cara maserasi dengan menggunakan metanol 50%, kemudian difraksinasi
dengan n-heksana. Hasil ekstraksi diperoleh dalam bentuk larutan sehingga
ekstrak tersebut diuapkan terlebih dahulu untuk memperoleh tanin dalam bentuk
serbuk. Hasil penelitian menunjukkan bahwa koagulan FeCl
optimum pada pH
9,00 dengan konsentrasi optimum sebesar 50 mg/L, sementara koagulan FeSO 3optimum pada pH 10,50 dengan konsentrasi optimum sebesar 60 mg/L. Ekstrak
kasar tanin dapat membantu proses koagulasi dalam pengolahan air pada
konsentrasi optimum 125 mg/L dengan persentase penurunan kekeruhan sebesar
16,30% dengan proses pengendapan selama 30 menit. Penambahan ekstrak kasar
tanin berpengaruh pada parameter kualitas air, pada kondisi optimum koagulanFeCl
dengan kombinasi tanin dapat menurunkan kekeruhan sebesar 72,43%,
menurunan pH sebesar 47,24%, menurunan padatan terlarut sebesar 86,13% dan
menurunan konduktivitas sebesar 5,44%. Sementara untuk koagulan FeSO3
dengan kombinasi tanin pada kondisi optimum dapat menurunkan kekeruhan
sebesar 6,98%, menurunan pH sebesar 25,20%, sedangkan untuk padatan terlarut
tidak dapat didefinisikan dan dapat menurunkan konduktivitas sebesar -5,81
Perspectives and Challenges of Decentralized Identities in the Blockchain era
No full textopenIl presente documento descrive il lavoro svolto durante il periodo di stage, della durata di circa 276 ore, dal laureando Nicola Lazzarin presso l’azienda Athesys s.r.l, con periodo dal 06/07/2023 al 23/07/2023.
Il paradigma delle identità digitali è fondamentale nell’era digitale, ma spesso sottolinea l’inefficienza dei tradizionali sistemi centralizzati.
L’emergere delle Self-sovereign identity (SSI) offre un nuovo approccio promettente per migliorare la gestione delle identità digitali e delle Verifiable Credentials (VC).
Tuttavia, l’attuazione pratica di soluzioni basate su SSI, in particolare utilizzando il framework Hyperledger Aries, rimane una sfida complessa e impegnativa.
La presente tesi trae ispirazione dalla rilevanza delle identità digitali nella società odierna e dalla crescente necessità di soluzioni SSI.
Tuttavia, essa si concentra su una prospettiva critica basata sull’esperienza personale dell’autore, che, nonostante gli sforzi, non è riuscito a pieno a completare l’implementazione di un sistema di scambio di VC utilizzando il framework Hyperledger Aries JavaScript.
Il principale contributo di questa tesi è rappresentato dalla realizzazione parziale di un Proof of Concept (PoC) per un sistema di scambio di VC basato sul framework Hyperledger Aries JavaScript.
Questo PoC offre una base incompleta per ulteriori sviluppi nel campo delle SSI. Inoltre, questa ricerca fornisce una documentazione dettagliata sul processo di implementazione, comprese le scelte di progettazione e le tecnologie utilizzate, per agevolare ulteriori studi e implementazioni nel settore delle identità digitali decentralizzate.
In conclusione, questo tirocinio ha fornito un’opportunità di apprendimento e applicazione pratica di concetti avanzati nel campo delle identità digitali e delle credenziali verificabili.This paper describes the work done during the internship period, lasting about 276 hours, by graduate student Nicola Lazzarin at the company Athesys s.r.l, with a period from 06/07/2023 to 23/07/2023.
The paradigm of digital identities is crucial in the digital age, but often underscores the inefficiency of traditional centralized systems.
The emergence of Self-sovereign identities (SSI) offers a promising new approach to improve the management of digital identities and Verifiable Credentials (VC).
However, the practical implementation of SSI-based solutions, particularly using the Hyperledger Aries framework, remains a complex and demanding challenge.
This thesis draws inspiration from the relevance of digital identities in today's society and the growing need for SSI solutions.
However, it focuses on a critical perspective based on the personal experience of the author, who, despite his efforts, was not fully successful in completing the implementation of a VC exchange system using the Hyperledger Aries JavaScript framework.
The main contribution of this thesis is the partial implementation of a Proof of Concept (PoC) for a VC exchange system based on the Hyperledger Aries JavaScript framework.
This PoC provides an incomplete basis for further development in the field of SSI. In addition, this research provides detailed documentation of the implementation process, including design choices and technologies used, to facilitate further studies and implementations in the area of decentralized digital identities.
In conclusion, this internship provided an opportunity for learning and practical application of advanced concepts in the field of digital identities and verifiable credentials
I.FAST and EURO-LABS Perfect Legacy of ARIES
No full textCERN hosted on May 2-6, 2022, the first annual meeting of the H2020 I.FAST project to support innovation in the field of science and technology of particle accelerators. The project has a completely different character from its predecessors in this area of research. It was approved for implementation a year ago by the EC with the highest marks. It is worth looking at why projects such as ARIES, I.FAST and EURO-LABS are so easily accepted. This alleged ease of acceptance is an appearance. Behind the acceptance, in conditions of extremely tough competition, is the excellent organization of the submitting community that has been developed over the years, as well as the perfect, well-thought-out preparation of the material. The author, a participant in the ARIES and other EC projects in the field of particle accelerator science and technology, presents here, on specific examples, his subjective opinions on how to prepare materials for high-output projects for the EC FP. The author hopes that these remarks may be useful in the process of submitting research projects from Poland in international cooperation to the EC in the best possible way. The science and technology of particle accelerators is an excellent area of showing such examples because it is interdisciplinary and includes the following components: building of research infrastructure, applied physics, mechatronics, materials engineering, automation and robotics, electronics, ICT, innovation, cooperation with industry, and social
Prediksi spasio temporal rob berbasis model LISFLOOD FP di Pesisir Jakarta.
No full textAbstrak Jakarta khususnya daerah pesisir sangat rentan dengan adanya permasalahan lingkungan berupa rob. Pemetaan daerah yang berpotensi terdampak rob sangat diperlukan guna menyusun upaya mitigasi. Pada penelitian ini dilakukan prediksi tinggi muka laut dengan model Delft3D dan digunakan untuk memprediksi daerah tergenang rob menggunakan model LISFLOOD FP pada tanggal 18 – 20 November 2019 di pesisir Jakarta. Hasil penelitian menunjukkan bahwa prediksi tinggi muka laut memiliki akurasi yang baik, dengan koefisien korelasi pada tingkat kuat sebesar 0,93 dan nilai RMSE sebesar 0,13 meter. Sementara itu, prediksi rob model LISFLOOD FP menunjukkan luas maksimum yang terjadi 2 hingga 3 jam setelah fase puncak tinggi muka laut dan menggenangi 8 kecamatan di Jakarta Utara dan Jakarta Barat. Abstract Jakarta region especially the coastal areas are very vulnerable to environmental problems such as coastal inundation. Mapping of areas potentially affected by coastal inundation is needed to arrange mitigation efforts. In this study, sea level prediction was estimated using the Delft3D model and used to predict coastal inundation areas using the LISFLOOD FP model on 18-20 November 2019 on the coast of Jakarta. The results showed that the sea-level prediction model has good accuracy, with a correlation coefficient at a strong level of 0.92 and an RMSE error value of 0.13 meters. Meanwhile, coastal inundation prediction from the LISFLOOD FP model inundated 8 sub-districts in North Jakarta and West Jakarta and showed the maximum area in 2 to 3 hours after the peak phase of sea level.
SIMULATION-BASED LEARNING IN RELIGIOUS EDUCATION TO DEVELOP STUDENT EMPATHY ON PEACE EDUCATION
Get PDFSIMULATION-BASED LEARNING IN RELIGIOUS EDUCATION TO DEVELOP STUDENT EMPATHY ON PEACE EDUCATION Aries Musnandar
Abstract This study proposes an effective learning model to increase the quality of students’ empathy through simulation-based learning. The student’s noble behaviour as the objective religious subject in schools can be reached by fostering empathy. But, conservative teaching techniques such as lecturing, presentation and one-way communication are used by most teachers. In contrast, the simulation based-learning model for religious education could involve the affective domain which is appropriate to be used for behaviour change. Peace education in religious education subjects can be elaborated proportionally using simulation based-learning for developing the empathy of student as an important factor to have better peace education results. By using qualitative method, author conducted interview, observation and literature review for further analysis of this study. Research results confirmed that teacher who apply simulation based learning as a suitable method to enhance empathy for elevated tolerant behavior of students which is in line with peace education view. Keywords: Simulation-Based Learning, Empathy, Peace Education, Religious Education
12 22 2020 122 144 http://creativecommons.org/licenses/by-nc/4.0 10.24239/jsi.v17i2.606.122-144 https://www.jurnalhunafa.org/index.php/hunafa/article/view/606 https://www.jurnalhunafa.org/index.php/hunafa/article/download/606/508 https://www.jurnalhunafa.org/index.php/hunafa/article/download/606/50
I.FAST and EURO-LABS perfect legacy of ARIES
Get PDFCERN hosted on May 2-6, 2022, the first annualmeeting of the H2020 I.FAST project to support innovation in thefield of science and technology of particle accelerators. The projecthas a completely different character from its predecessors in thisarea of research. It was approved for implementation a year agoby the EC with the highest marks. It is worth looking at whyprojects such as ARIES, I.FAST and EURO-LABS are so easilyaccepted. This alleged ease of acceptance is an appearance. Behindthe acceptance, in conditions of extremely tough competition, is theexcellent organization of the submitting community that has beendeveloped over the years, as well as the perfect, well-thought-outpreparation of the material. The author, a participant in theARIES and other EC projects in the field of particle acceleratorscience and technology, presents here, on specific examples, hissubjective opinions on how to prepare materials for high-outputprojects for the EC FP. The author hopes that these remarks maybe useful in the process of submitting research projects fromPoland in international cooperation to the EC in the best possibleway. The science and technology of particle accelerators is anexcellent area of showing such examples because it isinterdisciplinary and includes the following components: buildingof research infrastructure, applied physics, mechatronics,materials engineering, automation and robotics, electronics, ICT,innovation, cooperation with industry, and social
From ARIES to MARS: Transaction Support for Next-Generation, Solid-State Drives
No full textTransaction-based systems often rely on write-ahead log-ging (WAL) algorithms designed to maximize perfor-mance on disk-based storage. However, emerging fast, byte-addressable, non-volatile memory (NVM) technolo-gies (e.g., phase-change memories, spin-transfer torque MRAMs, and the memristor) present very different perfor-mance characteristics, so blithely applying existing algo-rithms can lead to disappointing performance. This paper presents a novel storage primitive, called editable atomic writes (EAW), that enables sophisticated, highly-optimized WAL schemes in fast NVM-based stor-age systems. EAWs allow applications to safely access and modify log contents rather than treating the log as an append-only, write-only data structure, and we demonstrate that this can make implementating complex transactions simpler and more efficient. We use EAWs to build MARS, a WAL scheme that provides the same as features ARIES [26] (a widely-used WAL system for databases) but avoids mak-ing disk-centric implementation decisions. We have implemented EAWs and MARS in a next-generation SSD to demonstrate that the overhead of EAWs is minimal compared to normal writes, and that they pro-vide large speedups for transactional updates to hash tables, B+trees, and large graphs. In addition, MARS outperforms ARIES by up to 3.7 × while reducing software complexity. ∗Now working at Google Inc. Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for third-party components of this work must be honored. For all other uses, contact the Owner/Author. Copyright is held by the Owner/Author(s)
VARIASI DIURNAL UAP AIR DI LAPISAN TROPOSFER BAWAH SAAT MADDEN JULIAN OSCILLATION FASE AKTIF MEMASUKI KAWASAN BARAT INDONESIA BERBASIS ANALISIS DATA GPS (DIURNAL VARIATION OF LOW LEVEL MOISTURE WHEN THE ACTIVE PHASE OF MADDEN JULIAN OSCILLATION ENTERING AREA OF WESTERN INDONESIA BASED ON GPS DATA ANALYSIS)
Get PDFUap air di lapisan troposfer bawah (Low-level Moisture/LLM) berperan dalam pertumbuhan awan hujan. Teknologi Global Positioning System (GPS) mampu mengekstraksi uap air LLM dengan menerapkan metode kombinasi selisih uap air total hasil ekstrasi groundbased GPS dengan Precipitable Water Vapor (PWV) di lapisan troposfer atas ECMWF. Variasi diurnal LLM berbasis data GPS di beberapa kawasan yang ada di bagian barat Indonesia, yaitu wilayah Jawa bagian Barat dianalisis terutama saat fase aktif Madden Julian Oscillation (MJO) sebagai salah satu variabilitas dominan yang sangat penting di daerah tropis. Kejadian MJO November 2009 di wilayah Jawa bagian Barat memberikan dampak terhadap variasi harian LLM, dimana anomali hariannya meningkat seiring dengan menurunnya anomali OLR saat MJO onset, dan menurun saat pasca MJO. Di bagian utara menunjukkan konsentrasi LLM menurun dari barat-timur, sedangkan di bagian selatan konsentrasinya meningkat. Variasi dari utara-selatan menunjukkan konsentrasi LLM yang cenderung berubah-ubah, sementara di bagian timur peningkatan uap air ke arah selatan sesuai dengan analisis vektor angin. Variasi diurnal LLM November 2009 saat fase MJO aktif secara umum konsentrasinya lebih tinggi dibandingkan pra dan pasca MJO. Dari analisis indeks konvektif citra satelit MTSAT IR1 juga menunjukkan LLM saat MJO berkaitan dengan aktivitas konvektif, baik pada periode pra-MJO, saat onset, aktif hingga pasca MJO.hal. 47-6
ESTIMASI CURAH HUJAN AKIBAT MCC MENGGUNAKAN METODE CSTm (MODIFIED CONVECTIVE STRATIFORM TECHNIQUE) (STUDI KASUS MCC SULAWESI 15 – 16 Maret 2018)
Get PDFMCC merupakan sistem konvektif skala meso yang terdiri dari gabungan sel konvektif tunggal dengan durasi kejadian ≥ 6 jam. Di Indonesia, MCC berkontribusi 20% terhadap total curah hujan dengan sebagian besar kejadian MCC terjadi di daratan. Dikarenakan keterbatasan data pengamatan curah hujan di beberapa titik di wilayah Indonesia, data satelit dapat digunakan untuk mengetahui data curah hujan di suatu wilayah. Penelitian ini membahas mengenai perhitungan estimasi curah hujan akibat dari MCC menggunakan metode CSTm (Modified Convective Stratiform Technique) yang memanfaatkan data satelit. Estimasi curah hujan di beberapa titik kejadian hujan akibat MCC menghasilkan nilai yang underestimate dikarenakan metode CSTm yang memisahkan komponen konvektif dan stratiform dalam perhitungannya digunakan untuk menghitung estimasi curah hujan akibat MCC yang merupakan gabungan dari beberapa sel konvektif tunggal
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