Progress specialist IT knowledge among students based on learning blended learning

The article includes the analysis of the course whose aim is to present the potentialities of the system of virtual education Moodle[1], which is the basis for constructing e-Student platform owned by State Higher Vocational School in Krosno. The article presents the use of e-learning in the course ‘Computer science in tourism’ conducted at the Department of Tourism and Recreation in State Higher Vocational School in Krosno. The analysis of test practical task and final axam results computer science in tourism for the students of Tourism and recreation, which involved work in Voyager Travel, Hotel, Euroticket On-Line has clearly shown a strong correlation between the acquired computer science knowledge (good and very good grades) and the results of the final semester exam in Computer Science in Tourism e-course. The article describes the observations and conclusions drawn from the computer science courses run with a portal system based on the Moodle platform in the State Higher Vocational School Institute of Technology

Telepresence learning environments for opera singing, a case study

The present study analyzes the data obtained in the execution of the Opera eLearning project, a multidisciplinary effort to develop a solution for Opera singing distance lessons at the graduate level, using high bandwidth to deliver quality audio and video experience that has been evaluated by singing teachers, chorus and orchestra directors, singers and other professional musicians. The research work includes the phases of design, execution and evaluation of pilot tests, followed by further development and execution of several experimental exercises with the system, all of them carried out between July 2008 and April 2009. This is an empirical research, an exploratory case study that has provided enough data to arrive to a sustainable model for a telepresence learning environment. Different usability methods have been implemented in order to assure users of the quality of the product. The main objective is to prove whether the system or artifact proposed can be used to deliver a complete remote singing class at a higher education level; for that purpose, we have defined several research categories that describe the usability of the system in multiple dimensions. We have used “design as research” approaches to promote innovation in the technological area. The theoretical framework is based on a wide variety of fields; from acoustics, physics, music, professional singing to telecommunications and multimedia technology. However, the common thread and central issue under analysis is distance education, through the construction of a remote learning system. We have also included the corresponding justification of the scientific methodology employedEl presente estudio analiza los datos obtenidos en la ejecución del proyecto Opera eLearning, un esfuerzo multidisciplinario para desarrollar una solución que permita dar clases a distancia de canto lírico a nivel de educación superior, utilizando conexiones de banda ancha con el fin de proveer una experiencia de vídeo y audio de calidad, la que ha sido evaluada por profesores de canto, directores de coros y orquesta, cantantes y otros músicos profesionales. El trabajo de investigación incluye las fases de diseño, ejecución y evaluación de las pruebas piloto, seguido del posterior desarrollo y ejecución de varios ejercicios experimentales con el sistema, todos ellos efectuados entre Julio de 2008 y Abril de 2009. Esta es una investigación empírica, un caso de estudio exploratorio que ha obtenido datos suficientes como para definir un modelo sostenible de entorno de enseñanza por telepresencia. Diversos métodos de usabilidad fueron implementados con el fin de asegurar a los usuarios la calidad del producto. El objetivo principal es probar si el sistema o artefacto propuesto puede ser usado para realizar de modo remoto una clase completa de canto lírico a nivel de educación superior; con tal propósito, hemos definido varias categorías de investigación que describen la usabilidad del sistema en múltiples dimensiones. Hemos utilizado el enfoque de “diseño como investigación” para promover la innovación en el área tecnológica. El marco teórico se basa en una amplia variedad de campos; desde la acústica, la física, la música, el canto profesional hasta las telecomunicaciones y tecnología multimedia. Sin embargo, el hilo común y tema central bajo análisis es la educación a distancia, ya que se trata de la construcción de un sistema de aprendizaje remoto. También se he incluido la justificación correspondiente a la metodología científica empleada

Leadership Qualities in Project Management

Purpose: The purpose of this paper is to present key features that each project manager should have. Furthermore, it describes main tasks performed by a manager in a project. An attempt is also made to resolve the dilemma whether every project manager can also be described as a leader.Design/methodology/approach: This paper presents a theoretical approach. Analysis is conducted on the basis of literature review.Findings: This article describes a number of features that a good project manager should have. It should be emphasized that leadership qualities are personality traits represented by project managers. It is worth noting that a leader may not be a manager, but every manager should be a leader. If a manager does not have leadership characteristics, the realization of the project’s tasks may be impaired. Certainly, this does not mean that the project will not be completed. However, better results are generally achieved by project teams, which are managed by people showing a high level of leadership qualities.Research and practical limitations/implications: Conclusions drawn from the analysis can provide practical guidance to man-agers and  project teams and make up a foundation for further empirical research.Originality/value: The paper provides value for people involved in project management, both managers and project team members.Paper type: Literature review

Physicochemical characteristics of bee pollen collected from Virovitica-Podravina County

Pollen grains are located on the anthers of the flowers, bees collect them and mix them with secretions from their salivary glands and nectar and carry them to the hives in the baskets situated on their hind legs. According to the chemical composition, bee pollen is a mixture of proteins, fats, carbohydrates, vitamins and other useful substances for the development of bees in the hive. Due to its nutritional value and potential healthful properties, it is valuable product for beekeeper’s income. The aim of this research was to evaluate the physicochemical characteristics of bee pollen in relation to the period of collection and geographical origin from different localities in Virovitica-Podravina County. Eleven bee pollen samples were collected from stationary apiaries in the period of April and May 2022.Palynological analysis showed that dominated pollen in five samples was pollen from Brassica sp.; Malus spp. and Salix spp. pollen dominate in two bee pollen samples while two samples had dominating pollen coming from Asteraceae family. Physicochemical analysis showed that pollen collected in the period of April had a lower proportion of ash, total fat and phenols, but a higher proportion of moisture content, proteins and carbohydrates

Мethods of environmental monitoring parameters based on smart measurement systems

Kako se efekat globalnog zagrevanja odigrava širom planete, tako se svetska populacija suočava sa verovatno jednim od najvažnijih socijalnih i naučnih fenomena-promenom parametara životne sredine usled zagađenja. Preduzimanje bilo kakve akcije zahteva precizna i tačna merenja parametara životne sredine u više desetina hiljada tačaka, postavljenih širom sveta. Pošto je finansijski skupo, a i praktično nemoguće napraviti tako veliki broj mernih stanica koje bi premrežile celu planetu, očigledno je da se moraju pronaći neka alternativna rešenja. Napravljen je merni sistem i realizovane su merne metode za udaljeno merenje parametara životne sredine. Ovaj sistem može biti realizovan kao stacionarna ili kao pokretna merna stanica. Radna hipoteza se zasniva na korišćenju statističke analize izmernih podataka, gde se dolazi do pretpostavke i dokaza o mogućnosti smanjenja broja senzora na mernoj stanici, jer se praćenjem jedne veličine (koncentracija ugljen-monoksida) može doći do pretpostavljene vrednosti druge veličine (koncentracija azot-dioksida) u slučaju da potiču iz istog izvora. A korišćenjem predikcije, pomoću regresionog modela – interpolacije i ekstrapolacije pokazala se mogućnost smanjenja broja mernih stanica. Naime, korišćenjem interpolacionih krivih moguće je na teritoriji jednog grada prikazati estimacije koncentracija gasova na osnovu podataka sa pokretne merne stanice. Takođe, na osnovu matematičkog ARMA modela pokazana je estimacija koncentracije gasova na osnovu prethodnih merenja.As the effects of global warming are spreading globally, the world population encounters one of the most important social and scientific phenomena- changing the parameters of the environment due to pollution. Any conducted action requires precise and accurate measuring of the environmental parameters at several dozens of thousands points deployed around the world. Since financially, as well as practically, it is impossible to create such a large number of measuring stations which would network all over the planet, it is obvious that some alternative solutions must be found. A new measuring system is developed and measuring methods for remote measurement of environmental parameters are implemented. This system can be implemented as a stationary or mobile measuring station. The working hypothesis is based on the use of statistical analysis of measurement data. It leads to the possibility of reducing the number of sensors at measure station, as based on the monitoring of one value-gas concentration (the concentration of carbon monoxide) can be estimated values of other gas (the concentration of nitrogen - dioxide) in the case that they originate from the same source. Using prediction and regression models - interpolation and extrapolation have shown the possibility to reduce the number of measuring stations. Specifically, in the territory of one observedcity, by using interpolation curves, the estimation of concentrations of gases based on data from the measuring system can be shown. Also, based on a mathematical model (ARMA) estimation of concentrations of gases based on previous measurements is shown

VIBRATION MITIGATION-BASED MACHINE LEARNING-DRIVEN DESIGN OF METASTRUCTURES

This research is concerned with the development of a longitudinally excited metastructure, featuring periodically distributed external units, each equipped with internal oscillators functioning as vibration absorbers. Initially, the metastructure designed for vibration attenuation around the first structural resonance, is characterized by uniformity, with all absorbers being identical and consisting of cantilevers integrated into the external components, each cantilever terminating in a concentrated mass block. This study employs a machine learning approach to maximize vibration attenuation efficiency around the second resonance, as well as concurrently at the first and second resonant frequencies in two associated optimality criteria related to the width of the attenuation region and the amplitude reduction, respectively. The new metastructures redesigned based on these criteria are fabricated by 3D printing, and their enhanced vibration mitigation capabilities are verified experimentally

Evaluation of the effectiveness of histopathological verification of the endometrium by means of an outpatient aspiration biopsy

Cele badań: 1) Sprawdzenie skuteczności ambulatoryjnej biopsji aspiracyjnej z jamy macicy w uzyskiwaniu satysfakcjonującego materiału do oceny. 2) Badanie czynników ryzyka uzyskania niediagnostycznego materiału. 3) Poszukiwanie wzorców obrazu ultrasonograficznego według systemu International Endometrial Tumor Analysis, które mogą przemawiać za potencjalną nieskutecznością biopsji. 4) Ocena skuteczności biopsji ambulatoryjnej w wykrywaniu raka endometrium. Materiał i metody: Obserwacyjne badanie prospektywne na niewyselekcjonowanej populacji kobiet zgłaszających się do poradni ginekologicznej podejrzanych o patologie endometrium. Wyniki: Przeanalizowano 116 biopsji aspiracyjnych endometrium. Diagnostyczny wynik histopatologiczny udało się uzyskać w 100 przypadkach (86,2%). Nie wykazano istotności statystycznej w uzyskiwaniu niediagnostycznego wyniku biopsji w aspekcie statusu menopauzalnego, obecności mięśniaków macicy, występowania nieprawidłowych krwawień macicznych, wieku, grubości endometrium oraz liczby przebytych porodów. Uzyskano dużą różnorodność obrazów ultrasonograficznych według parametrów International Endometrial Tumor Analysis. Nie stwierdzono jednoznacznie dominujących wzorców parametrów ultrasonograficznych endometrium u pacjentek z niediagnostycznym wynikiem biopsji. U wszystkich (100%) badanych w wieku pomenopauzalnym z nieprawidłowymi krwawieniami macicznymi w wywiadzie ujawniono raka endometrium. Średnia grubość endometrium w tej grupie była istotnie statystycznie największa: 16,2 mm (4-22,3 mm) (p = 0,025). Wnioski: Ambulatoryjna biopsja aspiracyjna endometrium jest skutecznym, mało obciążającym postępowaniem w przypadku stwierdzenia wskazań do weryfikacji histopatologicznej endometrium.Objectives: 1) Examining the effectiveness of an outpatient aspiration biopsy from the uterine cavity in the context of satisfactory sampling. 2) Assessing risk factors of obtaining a non-diagnostic sample. 3) Search for ultrasound image patterns according to the International Endometrial Tumor Analysis that may indicate potential ineffectiveness of the biopsy. 4) Assessment of effectiveness of an outpatient biopsy in detection of endometrial cancer. Methods: Observational prospective study on a non-selected population of women suspected of endometrial pathologies. Results: 116 endometrial aspiration biopsies have been analyzed. Diagnostic histopathological samples were obtained in 100 cases (86.2%). There was no statistical significance in obtaining a non-diagnostic result of a biopsy in terms of the menopausal status, presence of uterine fibroids, occurrence of abnormal uterine bleeding, age, endometrial thickness and the number of deliveries. A large variety of ultrasound images were obtained according to the International Endometrial Tumor Analysis parameters. There were no clearly dominant patterns of endometrial ultrasound parameters in patients with non-diagnostic biopsy results. 100% of endometrial cancer cases were reported in postmenopausal patients with the history of abnormal uterine bleeding. The mean thickness of the endometrium was statistically the largest in this group: 16.2 mm (4-22.3 mm) (p = 0.025). Conclusions: An outpatient endometrial aspiration biopsy is an effective, low-impact procedure in case of indications for histopathological assessment of the endometrium

La representación de servicios de salud en la televisión mexicana: potenciales consecuencias en las subjetividades en salud

The objective of this paper is to analyze the representation of health services in Mexican television, considering that television plays an important role in the production and reproduction of the social meanings of health. A descriptive study analyzed the contents of 672 hours of continuous television (media flows) broadcast in Mexico in 2011, examining advertising, television shows and newscasts. The analysis of all these messages shows that the representation of private care services predominates. When public care services are mentioned, the communication is mainly regarding the Seguro Popular de Salud [Popular Health Insurance, for those with low incomes], while the social security model of care is underrepresented. We therefore conclude that television favors the two first models of health care. This kind of representation could hold potential consequences for health subjectivities.El objetivo de este trabajo es analizar la representación de los servicios de salud en la televisión mexicana, considerando su participación en la producción y reproducción de significados sociales sobre salud. Se realizó un estudio descriptivo que analizó los contenidos de 672 horas de televisión continuas (flujos mediáticos) en México, emitidas en el año 2011, y revisó publicidad, programas de televisión y noticiarios. Como resultado del análisis del conjunto de mensajes se observó que en los contenidos se representan principalmente servicios privados de salud; cuando aparecen servicios públicos, predomina la comunicación sobre el Seguro Popular de Salud; y el modelo de servicios menos representado es el de la seguridad social. Se concluye que la televisión favorece a los dos primeros tipos de servicios de salud y diluye la importancia de la seguridad social. Este tipo de representaciones de los servicios tiene potenciales consecuencias en las subjetividades en salud