Results 71 to 80 of about 615,229 (301)

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

Legal analysis of the conflict of interests in Iran's electronic card payment industry

open access: yesحقوق فناوریهای نوین, 2023
Nowadays, the provision of public services by the government has been increasingly expanded. The electronic payment system is one of the public services which, due to its sensitivity, requires the regulation of the supervision of the relevant ...
behzad abdollahzadeh   +2 more
doaj  

A Delay-Tolerant Payment Scheme Based on the Ethereum Blockchain

open access: yesIEEE Access, 2019
Digital banking as an essential service can be hard to access in remote, rural regions where the network connectivity is unavailable or intermittent.
Yining Hu   +6 more
doaj   +1 more source

HitFraud: A Broad Learning Approach for Collective Fraud Detection in Heterogeneous Information Networks

open access: yes, 2017
On electronic game platforms, different payment transactions have different levels of risk. Risk is generally higher for digital goods in e-commerce. However, it differs based on product and its popularity, the offer type (packaged game, virtual currency
Cao, Bokai   +3 more
core   +1 more source

Building robust m-commerce payment system on offline wireless network [PDF]

open access: yes, 2011
Mobile commerce is one of the upcoming research area with focus on mobile payment systems. Unfortunately, the current payment systems is directly dependent on fixed infrastructure of network (cellular network), which fails to facilitate optimal level of ...
Chitra Kiran, N., Narendra Kumar, G.
core   +1 more source

In Situ Amine Formation to Modulate MOF‐Derived PdIn N‐Doped Carbon Catalysts

open access: yesAdvanced Materials, EarlyView.
An amine‐assisted approach converts PdIn‐MOF into PdIn intermetallic nanoparticles embedded in N‐doped carbon. In situ‐generated amines trigger early Pd nucleation, producing smaller PdIn domains than direct pyrolysis. Amine sterics and basicity tune composition and particle size, while solvent and amine co‐determine textural features.
Gonzalo Egea   +9 more
wiley   +1 more source

Congestion Attacks in Payment Channel Networks

open access: yes, 2021
Payment channel networks provide a fast and scalable solution to relay funds, acting as a second layer to slower and less scalable blockchain protocols. In this paper, we present an accessible, low-cost attack in which the attacker paralyzes multiple payment network channels for several days.
Ayelet Mizrahi, Aviv Zohar
openaire   +2 more sources

Evidence for Itinerant Ferromagnetic Flat Bands Producing Large Transverse Responses

open access: yesAdvanced Materials, EarlyView.
Itinerant ferromagnetic flat bands are demonstrated in GdCo5 with a high Curie temperature of 940K, a stacked honeycomb–kagome lattice, through angle‐resolved photoemission spectroscopy and magneto‐thermoelectric measurements. These topological flat bands generate large Berry curvaturte, producing gigantic anomalous Nernst effect with record‐high ...
Susumu Minami   +15 more
wiley   +1 more source

Using QR Codes for Payment Card Fraud Detection

open access: yesInformation
Debit and credit card payments have become the preferred method of payment for consumers, replacing paper checks and cash. However, this shift has also led to an increase in concerns regarding identity theft and payment security.
Rachid Chelouah, Prince Nwaekwu
doaj   +1 more source

Stress Testing Linkages between Banks in the Netherlands [PDF]

open access: yes
Assessing the stability of the financial sector is becoming more common in many countries. This paper presents two useful approaches, applied to the Netherlands. First we discuss the results of a contagion analysis of the Dutch interbank market.
Liedorp, Franka   +2 more
core   +1 more source

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