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Objective
The goal of this study was to examine associations among economic strain, parenting self‐efficacy, parenting satisfaction, and parent primary language in a universally low‐income sample of parents with newborns.
Background
Previous research links increased economic strain to lower levels of parenting self‐efficacy and parenting satisfaction among socioeconomically diverse parents with...
The complexity of the Mobile Backhaul (MBH) and the unpredictability of the mobile traffic represents a network operation challenge. Increasing the automation of the transport service management by introducing the Self Organizing Networks (SON) concept to MBH can significantly simplify the network configuration process, reduce the cost of operation and maintenance and improve the network efficiency...
Radio resources in Long Term Evolution (LTE) systems are distributed among User Equipments (UE) without considering the application and content being transmitted. When the radio capacity is fully utilized, the bearer based service strategy aiming to maximize the spectral efficiency may not support good customer experience for popular Over The Top (OTT) applications where each session has an individual...
In order for IP to become a full-fledged carrier-grade transport technology, a native IP failure-recovery scheme is necessary that can correct failures in the order of milliseconds. IP Fast ReRoute (IPFRR) intends to fill this gap, providing fast, local and proactive handling of failures right in the IP layer. Building on experiences and extensive measurement results collected with a prototype implementation...
Long Term Evolution (LTE) subscribers expect seamless Quality of Experience (QoE) during their ubiquitous Internet access. Due to the high degree of application and content diversity, the amount of system resources that enable good QoE is application session specific and varies on a wide scale. Accordingly, good QoE requires dynamic and adaptive application session level resource management. The standard...
In Long Term Evolution (LTE) systems both radio and transport congestion might occur due to the increasing data traffic generated by smart devices accessing popular Internet applications. Packets arriving at a congested resource experience increased delay, random discards and eventually tail drops as a consequence of network side buffer overflows. The LTE system delegates congestion management to...
YouTube is a prominent Over The Top (OTT) application increasingly used on mobile devices for watching online videos. Due to the mobile environment, cellular technology specific reasons and the delivery mechanism adopted by YouTube, providing seamless customer experience is not straightforward. Being a popular application whose availability is important from customer satisfaction point of view, operators...
Long Term Evolution (LTE) evolved Node Bs (eNB) have dedicated buffers for each Radio Access Bearer (RAB) implemented at the Packet Data Convergence Protocol (PDCP) layer to receive and prepare user data for transmission over the air interface. These buffers multiplex the connections established by the active applications of a single user. Modern applications use the Transmission Control Protocol...
A cyber-physical system is a collection of distributed physical and computational entities, that collaborate together to reach a higher goal. The paper presents how the communication aspects of the Pεα workflow language for programming cyber-physical systems can be decentralized with the communication patterns provided by Iris, a distributed cloud messaging system.
Due to the joint evolution of mobile applications and cloud services, mobile users routinely act as both content consumers and producers. Nowadays there is an increasing trend in both the downlink (DL) and uplink (UL) data traffic, which are predominantly Transmission Control Protocol (TCP) based. Simultaneous DL and UL TCP transmission over an asymmetric link causes significant throughput degradation...
Serving online applications and commercial web sites with low latency is business critical. As content requests originate from geographically distant locations and increasingly from mobile devices, globally ensuring service quality is challenging. The content is delivered to the clients predominantly via the Transmission Control Protocol (TCP), therefore optimal TCP operation over radio access is...
Mobility Load Balancing (MLB) is a Self-Organising Networks (SON) use case with the scope of detecting and resolving radio overload. In case of overload, the MLB triggers the handover of cell edge users towards less loaded neighbour cells to better align the traffic demand with the capacity available on the air interface. This, however, also increases the load on the transport links of these cells;...
The aspects and ideas behind the RegionRank software are presented. The project aims to provide a whole new approach to searching geographical and related data on the Internet. RegionRank is a map service based web application. It generates results for queries containing multiple criteria and displays these results on a heatmap. In this way, the user can easily select the areas which are the best...
Traditionally, message oriented middlewares (MOM) are looked upon as either centralized systems (e.g. AMQP) or a rigidly distributed collection of machines, requiring significant configuration overhead for achieving the desired throughput under the needed security constraints. On the other end of the spectrum, peer-to-peer systems (P2P) in general achieve amazing scalability and fault tolerance, but...
Due to the evolution of mobile technology and the emergence of terminals like smart phones, Internet based applications mostly accessed over the Transmission Control Protocol (TCP) have become dominant on mobile platforms. However, since the TCP flow control mechanisms were designed for wired environments, short-term degradations on the air interface of radio access systems may lead to unnecessary...
Heterogeneous radio networks (HetNet) consist of base stations and other Network Elements (NE) manufactured by various vendors, providing service at overlapping coverage areas supporting different Radio Access Technologies (RAT). This heterogeneity increases the complexity of network management functions as the required infrastructure, configuration sequences and protocols vary across vendors. The...
This paper addresses the problem of scalable cyber- security using a cloud computing architecture. Scalability is treated in two contexts: (1) performance and power efficiency and (2) degree of cyber security-relevant information detected by the cyber-security cloud (CSC). We provide a framework to construct CSCs, which derives from a set of fundamental building blocks (forwarders, analyzers and grounds)...
One of the challenges of deploying distributed systems, is the difficulty for nodes and services to find one another (commonly called bootstrapping). There has been extensive research on the topic, resulting in solutions based on broadcasting/multicasting, rendezvous servers and domain name based service discoveries among others. Still, currently deployed solutions generally are centralized or have...
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