Application of the Lyapunov Exponent Based on Current Vibration Control Parameter (CVC) in Control of an Industrial Robot.

Controlling dynamics of industrial robots is one of the most important and complicated tasks in robotics. In some works[3,7], there are algorithms of the manipulators steering with flexible joints or arms. However, introducing them to calculation of trajectory results in complicated equations and a longer time of counting. On the other hand, works [4,5,6]show that improvement of the tool path is possible thanks to the previousidentification of the robot errors and their compensation. This text covers application of Largest Lyapunov Exponent (LLE) as a criterion for control performance assessment (CPA) in a real control system. The main task is to find a simple and effective method to search for the best configuration of a controller in a control system. In this context, CPA criterion based on calculation of LLE by means of a new method [9–11] is presented in the article

W muzeum pamiątek narodu... – „Rozrywki dla Dzieci” Klementyny Tańskiej

Artykuł opowiada o warunkach i potrzebie tworzenia edukacji historycznej w Polsce po okresie zaborów. Wspólne dziedzictwo historyczne, kulturowe i cywilizacyjne miały stanowić czynnik jednoczący społeczeństwo Wśród czasopism realizujących tę misję były także tytułowe „Rozrywki dla Dzieci” Klementyny Tańskiej, o których nieco szerzej traktuje autorka.Udostępnienie publikacji Wydawnictwa Uniwersytetu Łódzkiego finansowane w ramach projektu „Doskonałość naukowa kluczem do doskonałości kształcenia”. Projekt realizowany jest ze środków Europejskiego Funduszu Społecznego w ramach Programu Operacyjnego Wiedza Edukacja Rozwój; nr umowy: POWER.03.05.00-00-Z092/17-00

Cardioversion of Atrial Fibrillation (RHYTHM-AF) International Registry in Poland

Background: A key procedure of the rhythm control strategy in atrial fibrillation (AF) is cardioversion to normal sinus rhythm. The aim of the present study was to provide a review of treatment patterns for the cardioversion of patients with AF in a hospital setting in Poland and document the success rate of various cardioversion procedures.Methods: We herein present the results from Poland of a prospective observational study to characterize patients with recent onset episodes of AF for whom cardioversion is one of the planned therapeutic options — the RHYTHM-AF registry. Consecutive patients in the hospital setting, age > 18 years, with documented AF at the time of enrollment, excluding those with atrial flutter and those treated with vernakalant, were recruited. No treatment was recommended nor discouraged.Results: Five hundred and one patients were recruited (mean age 64.2 ± 12.1), with 294 (58.7%) patients finally undergoing cardioversion. Primary electrical cardioversion (ECV) was successful in 131 (88.5%) patients. Primary pharmacological cardioversion (PCV) was successful in 110 (75.3%) patients. Amiodarone and propafenone were most commonly used (52.1% and 24.7%, respectively). Fourteen complications and adverse events were recorded (no stroke was observed).Conclusions: Conversion to sinus rhythm was attempted in < 60% of the patients with AF admitted to the hospital with an intention to terminate arrhythmia. ECV was successful in ~90% of the patients, while PCV in ~75% of the patients (amiodarone and propafenone were most commonly used). The rate of complications was low (2.8%).

How does early decompressive craniectomy influence the intracranial volume relationship in traumatic brain injury (TBI) patients?

Background. Decompressive craniectomy (DC) is a common neurosurgical procedure involving the removal of part of the skull vault combined with subsequent duroplasty. The goal of DC is to produce extra space for the swollen brain and/or to reduce intracranial pressure. In the present study, DC was performed in order to create space for the swollen brain. Aim of the study: to compare the volume alteration of selected intracranial fluid spaces before and after DC, to evaluate the volume of post-decompressive brain displacement (PDBD) and the largest dimension of oval craniectomy (LDOC), and to assess the early clinical effects of DC. Material and methods. The study group consisted of 45 patients with traumatic brain injury (four females and 41 males, mean age 54.5 years) who underwent DC (not later than five hours after admission to hospital) due to subdural haematomas and/or haemorrhagic brain contusions localised supratentorially and diagnosed by computed tomography (CT). The mortality rate in the study group was 40%. Study calculations were performed using Praezis Plus software by Med Tatra, Zeppelin and Pax Station by Compart Medical Systems. For statistical analysis, IBM SPSS Statistics software was used. Results. The DC-related additional space was responsible for a statistically significant increase in the volume of preoperatively compressed intracranial fluid spaces. The mean volume of extra space filled by the swollen brain was 42.2 ml ± 40.7. The best early treatment results were achieved in patients under the age of 55. Conclusions. DC has limited effectiveness in patients aged over 70 years. In every patient with clamped basal cisterns, a skin incision enabling appropriate LDOC should be planned before surgery. DC should be as large as possible, and the limits of its dimensions should be the limits of anatomical safety

Polymerase chain reaction based detection of bacterial 16S rRNA gene in the cerebrospinal fluid in the diagnosis of bacterial central nervous system infection in the course of external cerebrospinal fluid drainage. Comparison with standard diagnostics currently used in clinical practice

Background and purpose External drainage of cerebrospinal fluid (CSF) is a commonly used neurosurgical procedure. Complications of the procedure comprise central nervous system (CNS) bacterial infections, the frequency of which is estimated at around 6–10%. Detection of these infections is ineffective in many cases. The aim of the study was to evaluate the usefulness of a polymerase chain reaction (PCR)-based detection of bacterial 16S rRNA gene (16S rDNA) in the CSF. Material and methods The study group consisted of 50 patients. Clinical signs of CNS infection were monitored and routine laboratory and microbiological tests were performed. The results of standard methods were compared with the bacterial 16S rDNA detection. Results Using cultures, CNS infection was diagnosed in 8 patients, colonization of the drainage catheter in 6 patients, and sample contamination in 7 patients. In the group of the remaining 29 patients, no positive CSF culture was obtained and 13 of these patients also had all negative results for 16S rDNA detection. For the remaining 16 patients of this group, CNS infection, colonization of the catheter and sample contamination were diagnosed via PCR alone. Routine biochemical CSF tests and blood inflammatory parameters had a supporting value. Conclusions Routine hospital tests do not provide rapid and efficient detection of the external drainage related bacterial CNS infection. It is justified to use several diagnostic methods simultaneously. The16S rDNA determination in CSF can increase the probability of detection of possible pathogens

Wizja przestrzeni eschatologicznych w "Teatrum myśli..." Wenantego Tyszkowskiego

The considerations undertaken in the article are drawn upon a collection of prose dialogues by Wenanty Tyszkowski published in 1780. An analysis of this work presents the manner of selection as well as the ways of confronting contradictory opinions and ideas of fictitious interlocutors about the afterlife, in particular the method of undermining arguments of both infidels and nonbelievers utilized by the author. The major goal of the reflection is to crystallize the eschatological visions outlined by Tyszkowski, and to determine their functions, and finally to embed them in the contexts of philosophical and social conventions of the times of the reign of Stanislaus II. There are also indicated the interconnections between elements and social facts co‑creating those images, and anti‑Semitism and belief in ghosts — the social attitudes and images characterizing the people of that time, remaining in stark opposition to the ideas of the Enlightenment

Wizerunek Elżbiety z Branickich Sapieżyny w piśmiennictwie polskim XVIII i XIX wieku : publiczne i prywatne odsłony życia

The discussion undertaken in the dissertation is based on numerous source materials from the second half of the 18th century, as well as on historical narratives from the 19th century, concerning Elżbieta Sapieżyna née Branicki (ca. 1732/1733–1800), the kasztelanka (daughter of the castellan) of Bracław, the wojewodzicowa (wife of the voivode’s son) of Mścisław, and one of the women most active in public life during the reign of Stanisław II August. The results of the research into this formally diverse literature, which includes both utilitarian and literary texts, are presented in three analytical chapters, preceded by an introduction that presents Polish-language studies on the position and experiences of women in the old Polish Republic, as well as previous works devoted to the life and work of Sapieżyna. In addition, the introductory part of the dissertation defines its goals, premises, and composition, and describes the topics examined in each of its parts

Rodzinne i środowiskowe uwarunkowania natury oraz losów Alberta Potockiego w świetle przekazów pamiętnikarskich

The article aims at reflection upon the comments concering the character traits of Albert Potocki, Szeliga coat of arms, (1801—1848) — a poet and a traveller — and the circumstances of his actions, preserved in memoirs. Passages from diary entries written by people who met the squire or only heard of him — i.e. Julian Ursyn Niemcewicz, Leon Sapieha, Ewa Felińska, Paulina Wilkońska, Wirginia Jezierska, Andrzej Edward Koźmian and Kajetan Koźmian — were the material for the present deliberations. With the aim of presenting a holistic depiction of Potocki’s character, the main focus has been placed on the diary writing of the last of the aforementioned authors, a stern critic of his former ward’s conduct. In Kajetan Koźmian’s account two threads of consideration have been distinguished, in which the writer presented the sources of the negative judgements of Albert’s behaviour — family and environmental. The attention has also been paid to different ways of understanding the concept of nature with regard to the described character, emerging from the examined writing and dependent on the religious beliefs of the diarist. The questions raised in the article allowed for a broad elucidation of the reasons for Potocki’s actions in various moments of his life, which the author had presented

Portrety Elżbiety z Branickich Sapieżyny w paszkwilach obyczajowych i politycznych

Elżbieta z Branickich Sapieżyna, po drugim mężu nazywana wojewodzicowąmścisławską, należała do grona najbardziej znanych i wpływowycharystokratek doby stanisławowskiej. Jej aktywny udział w życiu publicznymoraz zainteresowanie polityką były ukierunkowane przede wszystkim na zapewnienienajbliższym członkom swego rodu, a także jego szlacheckiej klientelistanowisk, pieniędzy oraz wpływów1. Podejmowanie skutecznych działańumożliwiał magnatce majątek odziedziczony po drugim mężu, Janie Sapieżez linii kodeńskiej2, a jeszcze bardziej pomocny w tym względzie okazał się jejromans ze Stanisławem Augustem, zapoczątkowany w okresie bezkrólewia3.Ze względu na znaczący wpływ wojewodzicowej na decyzje politycznePoniatowskiego oraz jej intymne kontakty z władcą nie może zaskakiwać fakt,iż sama arystokratka oraz podejmowane przez nią działania stały się przedmiotemataków ludzi pióra – najczęściej, co zrozumiałe, anonimowych4. Badaczezwracali już uwagę, że Sapieżyna została dość brutalnie oceniona przez literatówdoby stanisławowskiej, zwłaszcza w okresie Sejmu Wielkiego