Methods for evaluation packet delay distribution of ows using Expedited Forwarding PHB, Journal of Telecommunications and Information Technology, 2004, nr 2

The paper regards problem of providing statistical performance guarantees for real-time flows using Expedited Forwarding Per Hop Behavior (EF PHB) in IP Differentiated Services networks. Statistical approach to EF flows performance guarantees, based on calculation of probability that end-to-end packet delay is larger than certain value, allows larger network utilization than previously proposed deterministic approach. In the paper different methods of packet delay distribution evaluation are presented and compared. Considered cases comprise evaluation of delay distribution models for the core network and evaluation of end-to-end packet delay in the network consisted of edge node and chain of core nodes. Results obtained with aid of analytical models are compared with simulation results

The Realization of NGN Architecture for ASON/GMPLS Network, Journal of Telecommunications and Information Technology, 2011, nr 3

For the last decades huge efforts of telecommunication, Internet and media organizations have been focusing on creating standards and implementing one common network delivering multimedia services – Next Generation Network. One of the technologies which are very likely to be used in NGN transport layer is ASON/GMPLS optical network. The implementation of ASON/GMPLS technology using open source software and its results are the subject of this paper. The ASON/GMPLS architecture and its relation to the proposed ITU-T NGN architecture are described. The concept, functional structure and communication among architecture elements as well as the implementation of laboratory testbed are presented. The results of functional tests confirming proper software and testbed operation are stated

Streaming Real-time Data in Distributed Dispatcher and Teleinformation Systems for Visualization of Multimedia Data of the Border Guard

Surveillance of the sea borders is a very important task for the Border Guard. Monitoring of country maritime border is an important task of the Border Guard. This task can be facilitated with the use of the technology enabling gathering information from distributed sources and its supervision and visualization. This task can be accomplished using a technology that allows to collect information from distributed sensors of different types, unify the collected information, and present the synchronized data. The system presented in the paper is an extension and enhancement of the previously developed distributed map data exchange system. The added functionality allows to supplement the map data with multimedia (telephone and radio calls, video (cameras), photos, files, SMS/SDS) and presentation of current and archival situation on a multi-display screen in the Events Visualization Post. In the paper, the system architecture, functionality and main system elements are described and supported with preliminary analysis and test results

The current possible treatment approaches of Polycystic Ovary Syndrome (PCOS)

Introduction             Polycystic ovary syndrome (PCOS), first described by Stein and Leventhal in 1935, is one of the most prevalent endocrine system conditions affecting women of reproductive age. It affects between 6% and 13% of women and the majority of cases are identified between the ages of 20 and 30. Unfortunately, the disease is usually diagnosed only when bothersome symptoms such as hair loss, alopecia, acne, and infertility-related problems occur. Based on the Rotterdam criteria, four phenotypes of PCOS are distinguished. Aim of the study             This review aims to present the current state of knowledge about possible treatment approaches, both non-pharmacological and pharmacological. Materials and methods            The paper was created based on the Pubmed database. The literature was reviewed using the keywords: ”PCOS”, ”PCOS treatment” and “ PCOS medications “. The current state of knowledge           Treatments for PCOS must be tailored to the specific needs of each patient. In the management of PCOS, special attention is paid to diet, physical activity, and restoration of the Gut Microbiome. Medications used in therapy are oral contraceptives and anti-androgens, insulin sensitizers, ovulation inducers, calcium and vitamin D supplements, statins, Glucagon-like-peptide-1 (GLP-1) agonists, inositols and interleukin 22 (IL-22)  therapy. Summary            Treatment options for menstrual irregularities and hirsutism are based on the clinical goals and preferences of the patient. The ideal would be causal treatment, but due to the ongoing lack of full understanding of the pathogenesis of the syndrome, is not entirely feasible. The ideal would be causal treatment, but due to the ongoing lack of full understanding of the pathogenesis of the syndrome, is not entirely feasible. The most important is a multimodal approach to treat comorbid conditions such as diabetes mellitus type 2, obesity, hyperlipidemia, depression, and infertility

The multimodal approach to obesity treatment – current pharmacological and surgical methods and lifestyle changes

Introduction            Obesity is one of the major health problems of today’s population and is defined as a body mass index ≥ 30 kg/m2.  It is known that obesity may cause many complications such as type 2 diabetes, cardiovascular disease, osteoarthritis, obstructive sleep, apnoea, and several cancers. The only effective treatment of obesity can be pharmacological or surgical, especially when a years-long attempt to change habits has had no effects.  Aim of the study This review aims to present the current state of knowledge about non-pharmacological and pharmacological obesity treatment methods. Materials and methods            The paper was created based on the Pubmed database. The literature was reviewed using the keywords: ”obesity”, ”obesity treatment”, “ obesity lifestyle changes”, “obesity medications” and ”obesity surgery”. The current state of knowledge           The treatment of obesity requires a multimodal approach to treatment, including the addition of anti-obesity medications or bariatric surgery, or both, to assist people in reaching and sustaining sufficient weight loss to meet treatment goals. The 3 principal components of a comprehensive lifestyle intervention are diet, physical activity, and behavioral therapy. Among available anti-obesity medications include orlistat, phentermine, topiramate, naltrexone, bupropion, liraglutide, and semaglutide. Summary            The key challenge in the treatment of obesity is to maintain the effects obtained with multimodal therapy. Without proper motivation of patients and changes in eating and behavioral habits, it is impossible to achieve optimal results, therefore, in addition to medical interventions, more and more attention should be paid to psychological interventions

Mechanical thrombectomy in acute stroke – Five years of experience in Poland

Objectives Mechanical thrombectomy (MT) is not reimbursed by the Polish public health system. We present a description of 5 years of experience with MT in acute stroke in Comprehensive Stroke Centers (CSCs) in Poland. Methods and results We retrospectively analyzed the results of a structured questionnaire from 23 out of 25 identified CSCs and 22 data sets that include 61 clinical, radiological and outcome measures. Results Most of the CSCs (74%) were founded at University Hospitals and most (65.2%) work round the clock. In 78.3% of them, the working teams are composed of neurologists and neuro-radiologists. All CSCs perform CT and angio-CT before MT. In total 586 patients were subjected to MT and data from 531 of them were analyzed. Mean time laps from stroke onset to groin puncture was 250±99min. 90.3% of the studied patients had MT within 6h from stroke onset; 59.3% of them were treated with IV rt-PA prior to MT; 15.1% had IA rt-PA during MT and 4.7% – emergent stenting of a large vessel. M1 of MCA was occluded in 47.8% of cases. The Solitaire device was used in 53% of cases. Successful recanalization (TICI2b–TICI3) was achieved in 64.6% of cases and 53.4% of patients did not experience hemorrhagic transformation. Clinical improvement on discharge was noticed in 53.7% of cases, futile recanalization – in 30.7%, mRS of 0–2 – in 31.4% and mRS of 6 in 22% of cases. Conclusion Our results can help harmonize standards for MT in Poland according to international guidelines

Osimertinib – effective treatment of NSCLC with activating EGFR mutations after progression on EGFR tyrosine kinase inhibitors

Non-small cell lung cancer (NSCLC) driven by activating mutations in epidermal growth factor receptor (EGFR) constitutes up to 10% of NSCLC cases. According to the NCCN recommendations, all patients (with the exception of smoking patients with squamous cell lung cancer) should be screened for the presence of activating EGFR mutations, i.e. deletion in exon 19 or point mutation L858R in exon 21, in order to select the group that benefits from EGFR tyrosine kinase inhibitors (EGFR TKIs) treatment. Among approved agents there are the 1st generation reversible EGFR TKIs, erlotinib and gefitinib, and the 2nd generation irreversible EGFR TKI, afatinib. The objective response rates to these drugs in randomised clinical trials were in the range of 56–74%, and median time to progression 9–13 months. The most common determinant of resistance to these drugs is the clonal expansion of cancer cells with T790M mutation (Thr790Met) in exon 20 of EGFR. Osimertinib (Tagrisso™), a 3rd generation, irreversible EGFR tyrosine kinase inhibitor, constitutes a novel, highly efficacious treatment for NSCLC patients progressing on EGFR TKIs with T790M mutation confirmed as the resistance mechanism. Resistance mutation can be determined in tissue or liquid biopsy obtained after progression on EGFR TKIs. Osimertinib has a favourable toxicity profile, with mild rash and diarrhoea being the most common. In this article, we present three cases that were successfully treated with osimertinib after progression on 1st and 2nd generation EGFR TKIs

Mapserver – Information Flow Management Software for The Border Guard Distributed Data Exchange System

In this paper the architecture of the software designed for management of position and identification data of floating and flying objects in Maritime areas controlled by Polish Border Guard is presented. The software was designed for managing information stored in a distributed system with two variants of the software, one for a mobile device installed on a vessel, an airplane or a car and second for a central server. The details of implementation of all functionalities of the MapServer in both, mobile and central, versions are briefly presented on the basis of information flow diagrams

Mechanical thrombectomy in acute stroke : five years of experience in Poland

Objectives: Mechanical thrombectomy (MT) is not reimbursed by the Polish public health system. We present a description of 5 years of experience with MT in acute stroke in Comprehensive Stroke Centers (CSCs) in Poland. Methods and results: We retrospectively analyzed the results of a structured questionnaire from 23 out of 25 identified CSCs and 22 data sets that include 61 clinical, radiological and outcome measures. Results: Most of the CSCs (74%) were founded at University Hospitals and most (65.2%) work round the clock. In 78.3% of them, the working teams are composed of neurologists and neuro-radiologists. All CSCs perform CT and angio-CT before MT. In total 586 patients were subjected to MT and data from 531 of them were analyzed. Mean time laps from stroke onset to groin puncture was 250 99 min. 90.3% of the studied patients had MT within 6 h from stroke onset; 59.3% of them were treated with IV rt-PA prior to MT; 15.1% had IA rt-PA during MT and 4.7% - emergent stenting of a large vessel. M1 of MCA was occluded in 47.8% of cases. The Solitaire device was used in 53% of cases. Successful recanalization (TICI2b–TICI3) was achieved in 64.6% of cases and 53.4% of patients did not experience hemorrhagic transformation. Clinical improvement on discharge was noticed in 53.7% of cases, futile recanalization - in 30.7%, mRS of 0–2 - in 31.4% and mRS of 6 in 22% of cases. Conclusion: Our results can help harmonize standards for MT in Poland according to international guideline