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The problem of decoupling a nonsquare state space system by state feedback with singular input transformation is considered. The problem is solved by conducting a finite search for decouplable square systems, appropriately derived from the original. Decoupling feedback on any of these systems defines the decoupling feedback for the original. The issue of fixed poles is also considered and the possibility of selecting the uncontrollable poles is investigated.

Natural Language Processing (NLP) has evolved significantly over the last decade. This paper highlights the most important milestones of this period while trying to pinpoint the contribution of each individual model and algorithm to the overall progress. Furthermore, it focuses on issues still remaining to be solved, emphasizing the groundbreaking proposals of Transformers, BERT, and all the similar attention-based models., Comment: 13 pages, 5 figures

A Scientific Integrity Consortium developed a set of recommended principles and best practices that can be used broadly across scientific disciplines as a mechanism for consensus on scientific integrity standards and to better equip scientists to operate in a rapidly changing research environment. The two principles that represent the umbrella under which scientific processes should operate are as follows: (1) Foster a culture of integrity in the scientific process. (2) Evidence-based policy interests may have legitimate roles to play in influencing aspects of the research process, but those roles should not interfere with scientific integrity. The nine best practices for instilling scientific integrity in the implementation of these two overarching principles are (1) Require universal training in robust scientific methods, in the use of appropriate experimental design and statistics, and in responsible research practices for scientists at all levels, with the training content regularly updated and presented by qualified scientists. (2) Strengthen scientific integrity oversight and processes throughout the research continuum with a focus on training in ethics and conduct. (3) Encourage reproducibility of research through transparency. (4) Strive to establish open science as the standard operating procedure throughout the scientific enterprise. (5) Develop and implement educational tools to teach communication skills that uphold scientific integrity. (6) Strive to identify ways to further strengthen the peer review process. (7) Encourage scientific journals to publish unanticipated findings that meet standards of quality and scientific integrity. (8) Seek harmonization and implementation among journals of rapid, consistent, and transparent processes for correction and/or retraction of published papers. (9) Design rigorous and comprehensive evaluation criteria that recognize and reward the highest standards of integrity in scientific research.

Cardiovascular disease risk factor control as primary prevention in patients with type 2 diabetes mellitus has changed substantially in the past few years. The purpose of this scientific statement is to review the current literature and key clinical trials pertaining to blood pressure and blood glucose control, cholesterol management, aspirin therapy, and lifestyle modification. We present a synthesis of the recent literature, new guidelines, and clinical targets, including screening for kidney and subclinical cardiovascular disease for the contemporary management of patients with type 2 diabetes mellitus.

ALF leading to registration for transplantation after exposure to an NSAID was rare, with no major difference between NSAID. Non-overdose paracetamol-exposed liver failure was twice more common than NSAID-exposed liver failure.

The advent of Cloud computing has created numerous significant challenges with regard to manipulation of data and especially personal data in cases of Clouds and federated Clouds. Existing legislation currently creates constraints and boundaries in the free usage of external Cloud providers. The aim of this chapter is to provide a schema definition and usage mechanism (CPDS) that includes various levels of legal information that is necessary for automating the process of Cloud provider selection and data outsourcing. Thus the aforementioned constraints may be checked in an automated and machine understandable fashion and fully harvest the potential that is created by advances in Cloud computing like dynamic federation. In this direction, legal gaps and necessary actions are identified so that the automation avoids manual and bureaucratic steps that are necessary at the moment.

The advent of Cloud computing has created numerous significant challenges with regard to manipulation of data and especially personal data in cases of Clouds and federated Clouds. Existing legislation currently creates constraints and boundaries in the free usage of external Cloud providers. The aim of this chapter is to provide a schema definition and usage mechanism (CPDS) that includes various levels of legal information that is necessary for automating the process of Cloud provider selection and data outsourcing. Thus the aforementioned constraints may be checked in an automated and machine understandable fashion and fully harvest the potential that is created by advances in Cloud computing like dynamic federation. In this direction, legal gaps and necessary actions are identified so that the automation avoids manual and bureaucratic steps that are necessary at the moment.

The advent of Cloud computing has created numerous significant challenges with regard to manipulation of data and especially personal data in cases of Clouds and federated Clouds. Existing legislation currently creates constraints and boundaries in the free usage of external Cloud providers. The aim of this chapter is to provide a schema definition and usage mechanism (CPDS) that includes various levels of legal information that is necessary for automating the process of Cloud provider selection and data outsourcing. Thus the aforementioned constraints may be checked in an automated and machine understandable fashion and fully harvest the potential that is created by advances in Cloud computing like dynamic federation. In this direction, legal gaps and necessary actions are identified so that the automation avoids manual and bureaucratic steps that are necessary at the moment.

Cloud computing has emerged as the new trend in the IT industry. However, in order for the adopters of this technology to be legally compliant with regard to the handling of personal data, a series of actions must be undertaken. In this paper, we present the legal requirements that exist inside the EU with regard to transnational data transfer and storage. Based on these legal requirements, we then used the WS-Agreement standard to create corresponding SLAs. Subsequently, we extended existing and well known technologies in order to create a data management framework that is necessary from an Infrastructure Provider point of view, so that the latter can be considered as a trusted entity with regard to data management. As a result, customers and Cloud providers using the presented SLA and data management framework are able to be compliant with the legal requirements stipulated by the Data Protection Directive with regard to transnational data transfers.

Cloud computing has emerged as the new trend in the IT industry. However, in order for the adopters of this technology to be legally compliant with regard to the handling of personal data, a series of actions must be undertaken. In this paper, we present the legal requirements that exist inside the EU with regard to transnational data transfer and storage. Based on these legal requirements, we then used the WS-Agreement standard to create corresponding SLAs. Subsequently, we extended existing and well known technologies in order to create a data management framework that is necessary from an Infrastructure Provider point of view, so that the latter can be considered as a trusted entity with regard to data management. As a result, customers and Cloud providers using the presented SLA and data management framework are able to be compliant with the legal requirements stipulated by the Data Protection Directive with regard to transnational data transfers.

Cloud computing has emerged as the new trend in the IT industry. However, in order for the adopters of this technology to be legally compliant with regard to the handling of personal data, a series of actions must be undertaken. In this paper, we present the legal requirements that exist inside the EU with regard to transnational data transfer and storage. Based on these legal requirements, we then used the WS-Agreement standard to create corresponding SLAs. Subsequently, we extended existing and well known technologies in order to create a data management framework that is necessary from an Infrastructure Provider point of view, so that the latter can be considered as a trusted entity with regard to data management. As a result, customers and Cloud providers using the presented SLA and data management framework are able to be compliant with the legal requirements stipulated by the Data Protection Directive with regard to transnational data transfers.

Cloud computing has emerged as the new trend in the IT industry. However, in order for the adopters of this technology to be legally compliant with regard to the handling of personal data, a series of actions must be undertaken. In this paper, we present the legal requirements that exist inside the EU with regard to transnational data transfer and storage. Based on these legal requirements, we then used the WS-Agreement standard to create corresponding SLAs. Subsequently, we extended existing and well known technologies in order to create a data management framework that is necessary from an Infrastructure Provider point of view, so that the latter can be considered as a trusted entity with regard to data management. As a result, customers and Cloud providers using the presented SLA and data management framework are able to be compliant with the legal requirements stipulated by the Data Protection Directive with regard to transnational data transfers.

In this paper we design and study the performance of a Medium Access Control (MAC) scheme for the multiplexing and the integrated delivery of voice, mobile messaging, IP, gaming and H.264 videoconference traffic over a high-speed cellular TDMA channel with errors and capture. To the best of our knowledge, this is one of the first papers in the literature investigating the integration of actual H.264 video traces and gaming traffic with other types of traffic over wireless networks. Our results show that the proposed scheme achieves high throughput results while preserving the strict Quality of Service (QoS) requirements of each traffic type, and outperforms two efficient schemes previously proposed in the literature.

In this paper we design and study the performance of a Medium Access Control (MAC) scheme for the multiplexing and the integrated delivery of voice, mobile messaging, IP, gaming and H.264 videoconference traffic over a high-speed cellular TDMA channel with errors and capture. To the best of our knowledge, this is one of the first papers in the literature investigating the integration of actual H.264 video traces and gaming traffic with other types of traffic over wireless networks. Our results show that the proposed scheme achieves high throughput results while preserving the strict Quality of Service (QoS) requirements of each traffic type, and outperforms two efficient schemes previously proposed in the literature.

A well designed Medium Access Control (MAC) protocol for wireless networks should provide an efficient mechanism to share the limited bandwidth resources, and satisfy the diverse and usually contradictory Quality of Service (QoS) requirements of each traffic class. In this paper a new MAC protocol for next generation wireless communications is presented and investigated. The protocol uses a combined Packet Discard/Forward Error Correction scheme in order to efficiently integrate MPEG-4 videoconference packet traffic with voice, SMS data and web packet traffic over a noisy wireless channel of high capacity. Our scheme achieves high aggregate channel throughput in all cases of traffic load, while preserving the Quality of Service (QoS) requirements of each traffic type, and is shown to clearly outperform DPRMA, another efficient MAC protocol proposed in the literature for multimedia traffic integration over wireless networks.

Both call admission control (CAC) and efficient scheduling are of great importance in next generation wireless networks, which are expected to handle various types of highly demanding multimedia users. In this paper, we present and evaluate a new mechanism which combines CAC with bandwidth allocation in a high-speed downlink time division multiple access (TDMA) wireless channel with errors; our mechanism incorporates predictions of the wireless channel condition in its decision making and our results show that, with the use of the feedback between the scheduler and the admission controller, system performance is significantly enhanced (in terms of voice-WAP-SMS-H.263 video QoS) compared to a scheme without prediction on the channel condition.

In this paper we design and study the performance of a Multiple Access Control (MAC) scheme for the multiplexing and the integrated delivery of voice, video and bursty data traffic over a high-speed wireless TDMA channel. We compare our results with a previously proposed efficient MAC protocol and we show that, regardless of the much more severe (and realistic) channel conditions examined in our work, our scheme clearly outperforms the previously proposed protocol in terms of channel throughput and voice capacity, due to the use of two novel ideas.

Both call admission control (CAC) and efficient scheduling are of great importance in next generation wireless networks, which are expected to handle various types of highly demanding multimedia users. In this paper, we present and evaluate a new mechanism which combines CAC with bandwidth allocation in a high-speed downlink time division multiple access (TDMA) wireless channel with errors; our mechanism incorporates predictions of the wireless channel condition in its decision making and our results show that, with the use of the feedback between the scheduler and the admission controller, system performance is significantly enhanced (in terms of voice-WAP-SMS-H.263 video QoS) compared to a scheme without prediction on the channel condition.

A well designed Medium Access Control (MAC) protocol for wireless networks should provide an efficient mechanism to share the limited bandwidth resources, and satisfy the diverse and usually contradictory Quality of Service (QoS) requirements of each traffic class. In this paper a new MAC protocol for next generation wireless communications is presented and investigated. The protocol uses a combined Packet Discard/Forward Error Correction scheme in order to efficiently integrate MPEG-4 videoconference packet traffic with voice, SMS data and web packet traffic over a noisy wireless channel of high capacity. Our scheme achieves high aggregate channel throughput in all cases of traffic load, while preserving the Quality of Service (QoS) requirements of each traffic type, and is shown to clearly outperform DPRMA, another efficient MAC protocol proposed in the literature for multimedia traffic integration over wireless networks.

In this paper we design and study the performance of a Multiple Access Control (MAC) scheme for the multiplexing and the integrated delivery of voice, video and bursty data traffic over a high-speed wireless TDMA channel. We compare our results with a previously proposed efficient MAC protocol and we show that, regardless of the much more severe (and realistic) channel conditions examined in our work, our scheme clearly outperforms the previously proposed protocol in terms of channel throughput and voice capacity, due to the use of two novel ideas.

In this paper we explore, via an extensive simulation study, the performance of a new medium access control (MAC) protocol when integrating video and data packet traffic over a wireless picocellular system of very high capacity, with errors. Mobile terminals are considered to be high performance devices with extended storage capabilities which can act like cache memories streaming multimedia material. Our scheme achieves high aggregate channel throughput in all cases of traffic load, despite the very bursty nature of the examined traffic and the introduction of errors in the system.