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Endoscopic full‐thickness resection (EFTR) using the full‐thickness resection device (FTRD) is an integral part of diagnostic and therapeutic endoscopy. Since its market launch in Europe in 2014, its safety and effectiveness have been proven in numerous studies. Adaptations in design as well as new techniques, such as hybrid EFTR, expand the spectrum of the FTRD system. The following review is intended...
We synthesized a novel green‐light‐responsive tetra‐ortho‐isopropoxy‐substituted azobenzene (ipAzo). Cis‐ipAzo forms a strong host–guest complex with γ‐cyclo dextrin (γ‐CD) whereas trans‐ipAzo binds weakly. This new photoresponsive host–guest interaction is reverse to the well‐known azobenzene (Azo)/α‐cyclodextrin (α‐CD) complex, which is strong only between trans‐Azo and α‐CD. By combining the UV‐light‐responsive...
Dynamic virtual network allocation algorithms have emerged as a powerful way to control traffic and virtual link capacity for the popular multi-tenant data center. Unfortunately, the existing dynamic virtual network allocation algorithms are either suboptimal or inapplicable to cloud resident data center, which is a promising OpenFlow based multi-tenant data center offering virtual data centers to...
Precise and dynamic measurements of physical and virtualized telecommunication environments are critical for ensuring optimized resource management and control. The flexible service instantiation and disposal of Virtual Network Functions (VNF), within geographically distributed cloud service environments, requires automated adjustments of monitoring systems. Moreover, the overall goal of reducing...
Today's Next Generation Mobile Network architecture is challenged by several limitations in regard to the performance and flexibility. Recent investigations and proposals on core network architecture improvements through applying the Software Defined Network (SDN) concepts have been published, but no implementation has been presented yet. The main contribution of this paper is the design, implementation...
Cloud computing is a promising solution for the flexible, on-demand delivery of communication services and infrastructures. The European Union funded project Mobile Cloud Networking is developing a cloud-based mobile communication service platform where service providers deliver virtualized wireless infrastructures integrated with high-level applications running on top of them. Mobile networks are...
The design of telecommunication networks and its provisioning is a challenging and complex task, which is constantly influenced by various factors. The disciplines of Traffic Engineering (TE) and Network Management (NM) have addressed these domains with static, semi-automatic and pure self-organizational approaches. Most of the existing approaches usually either relax the problem by taking strong...
Large scale telecommunication network deployment and its management requires huge Operational Expenditure (OPEX) and Capital Expenditure (CAPEX) from the network operator. Network virtualization, Software Defined Networks (SDN) concepts and Cloud principles enable innovative approaches for introducing elasticity in the network for reducing OPEX. The activation and de-activation of network elements...
IMS has been widely recognized as the control and brokering framework for delivering of the blended communication and multimedia services to the fix and mobile IP users. However, until recently, most of IMS services have been developed and deployed in a manner that does not carefully consider how these services can be combined and interact with each other in a beneficial way. Services can often overlap...
Health care providers have over years continuously rejected Public Cloud technology for understandable concerns regarding privacy and confidentiality. The pick up rate on cloud computing in health care has been very poor reminding at the typical hype curve profile. Coincidentally Google Health has been discontinued and Microsoft Health Vault has switched focus and turned to the slightly "softer"...
This article presents the architecture design and experimental evaluation of a QoE-aware flexible-QoS-control next-generation IPTV network. The architecture extends the IMS service control functionality by providing an efficient application-specific service control approach based on user satisfaction on the connectivity. The validation NGN testbed uses OpenFlow network virtualization between individual...
The Internet is the largest global recognized communication system, which evolved in dimensions of technology, capacity, availability and subscriber, transported data, etc. since its beginnings in the 1960's continuously. As the world moves towards a data-only network environment with Long-Term-Evolution (LTE) and its advanced version (LTE-A), it is crucial to ensure Quality-of-Service (QoS) even...
Next Generation Mobile Broadband Networks are designed to solve the large amount of expected mobile data traffic and to reduce the network costs at the same time. 3GPP has standardized the Evolved Packet System (EPS) in order to address such issues and provide connectivity, mobility, security and Quality-of-Service (QoS) on a connection between User Equipments (UE) and services through the access...
The high costs connected to the interoperability labs setup is one reason limiting the number of Plug tests every year. The experience done through the various IMS Plug tests has shown the needs to have an enabler to speed up setup time and reduce infrastructural costs. HIVE (Hub for Integration and Validation at ETSI) has been created to cope with these needs. It allows to include in Plug tests setups...
With the increasing demand of mobile broadband communication and due to the physical limitation in the available wireless spectrum, one of the most preeminent solutions foreseen to maintain the rapid pace of development of wireless systems is the massive deployment of small coverage area cells such as femto or hotspots. However, it requires the inclusion of additional aspects for the wireless core...
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