Sina Rafati niya

Sina Rafati niya
University of Zurich | UZH · Department of Informatics - IFI

Doctor of Philosophy
Blockchain data engineering and analytics

About

29
Publications
9,676
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
337
Citations
Introduction
Blockchain design, Blockchain and IoT-integrated architectures and platforms.

Publications

Publications (29)
Article
Full-text available
Event tickets being sold in their electronic instances are subject to counterfeiting, profiteering, and black markets. Therefore, suitable service management mechanisms are required to overcome such deficits. This work designs, develops, and evaluates the approach of a Decentralized Ticketing platform—called DeTi—for managing the distribution of el...
Chapter
Blockchains (BC) serve as a chain of transactions persisted as backward-linked lists, while being created and maintained within a network of distributed nodes. Potential advances with BCs have reached various application areas beyond FinTech-oriented use cases. Since Internet-of-Things (IoT) based use cases being an important part of them, this cha...
Chapter
Full-text available
Although the first Blockchain (BC) was proposed about a decade ago, BC achievements from a technical and functional perspective are measurable, but still face open issues. Since IFIP’s Working Group 6.6 on the “Management of Networks and Distributed System” investigated BCs in various aspects, this contribution here summarizes and clarifies key cha...
Article
Scholarly publishing currently is faced by an upsurge in low-quality, questionable “predatory/hijacked” journals published by those whose only goal is profit. Although there are discussions in the literature warning about them, most provide only a few suggestions on how to avoid these journals. Most solutions are not generalizable or have other wea...
Conference Paper
The heterogeneous nature of raw milk production, transportation, processing, transformation, and storage have been triggering concerns on the authenticity of dairy products. For the first time known, this work studied these concerns via interviews with consumers and producers of dairy products. Therefore, this paper introduces “NUTRIA” as a decentr...
Preprint
Full-text available
In recent years, the interest growth in the Blockchains (BC) and Internet-of-Things (IoT) integration -- termed as BIoT -- for more trust via decentralization has led to great potentials in various use cases such as health care, supply chain tracking, and smart cities. A key element of BIoT ecosystems is the data transactions (TX) that include the...
Conference Paper
Full-text available
This work develops an integration of Blockchains (BC) with the Internet-of-Things (IoT) using a highly constrained TelosB IoT platform based on the MSP430 processor family and CC2420 IEEE 802.15.4-compliant radio interfaces. The system is evaluated in an indoor office environment focusing on overhead and energy efficiency of BC transaction (TX) tra...
Conference Paper
In Industry 4.0 (I4), the Industrial Internet of Things (I2oT) data streams are prone to significant data manipulation risks. The integration of Blockchains (BC) with I2oT may become a solution preventing from this problem. This paper provides a blockchain-agnostic Blockchain I2oT (BI2oT) architecture called BIIT that allows developing a broad rang...
Conference Paper
Full-text available
Blockchains (BCs) are back-linked chain of records termed as blocks. To establish decentralized trusted systems, BCs employ consensus mechanisms. During the past ten years, there have been various proposals of BC design and implementations. However, most of the developed sate of the art BCs suffer from scalability issues. In order to enhance the sc...
Conference Paper
This paper studies various methods that improve the performance of Blockchain systems integrated with the Internet of Things (BIoT) using the LoRaWAN access method. Duty Cycle Enforcement (DCE) and Listen Before Talk (LBT) mechanisms as the channel access methods, Automatic Repeat reQuest (ARQ) on the Transport Layer, and transaction aggregation on...
Conference Paper
Full-text available
Proof-of-Work (PoW) in Blockchains (BC), which is a widely used consensus algorithm, suffers from high power consumption of miners and low transaction rates. This work demonstrates a Proof-of-Stake (PoS)-based BC called Bazo, which is specially designed and adapted for Internet of Things (IoT) data streams. Bazo displays enhanced performance in ter...
Conference Paper
Full-text available
Supply Chain Tracking (SCT) is considered as a major challenge for stakeholders of heterogeneous production, processing, transporting, storing, and selling systems. Studies on solutions in SCT reveal that many centralized SCT applications lack a design, which can support or even enable main features of a reliable, transparent, and publicly accessib...
Conference Paper
Full-text available
Today's number of reputable academical publishers is dominated by few key players. This imbalance of supply and demand in publishing academic work makes the entire process inefficient. EUREKA is a blockchain-based scientific publishing platform, developed to address this imbalance. It offers the opportunity of a fair reward distribution for all con...
Conference Paper
Full-text available
Out casting, sharing, and publishing the collected knowledge, experiences, and outputs of scientific works, regardless of being empirical or purely theoretical, has always been one of the key assets of human evolution. However, on one hand, re-usability of published work depends on accessibility, and, on the other hand, om the correctness of publis...
Article
This work introduces the design and implementation of an Android-based Peer-to-peer Purchase and Rental Application termed PuRSCA, which leverages Smart Contracts (SC) and the Ethereum public blockchain (BC). As a Device-to-device (D2D) communication protocol, WiFi-Direct is chosen to enable the P2P data transmission between two parties. This work...
Poster
LTE-A and IEEE 802.11ad are two of the networks that can have complementary roles in 5G networking. Thus, this paper proposes a time efficient, predictive, and dynamic Handoff (HO) algorithm between these two protocols. The algorithm presented measures the Signal to Interference Plus Noise Ratio (SINR), the Reference Signal Received Quality (RSRQ),...
Conference Paper
Full-text available
This work proposes an IoT-and Blockchain-based, distributed system, for automated measuring, storing, and monitoring of water and air quality in environments such as lakes, mountains, urban areas, or factories. Comparable state-of-the-art solutions, require human interaction to access the data or require high power consumption or space requirements...
Conference Paper
Full-text available
Smart Contracts (SC) extend the applicability of Blockchains (BC) in various decentralized use cases. This work demonstrates the design and implementation of a trading application which, employs SC and Ethereum BC. This Decentralized Application (Dapp) provides flexibility in requesting user Identity (ID) directly by seller/hirer and buyers/renter....
Conference Paper
Full-text available
The rapid growth in the number of insecure portable and stationary devices and the exponential increase of traffic volume makes Distributed Denial-of-Service (DDoS) attacks a top security threat to services provisioning. Existing defense mechanisms lack resources and flexibility to cope with attacks by themselves, and by utilizing other’s companies...

Network

Cited By

Projects

Projects (3)
Project
Work on Blockchains covers a range of different aspects. Work at the CSG includes the exploitation of various technical, optimization, and application facets, which typically results always in an operational prototype.