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Graph-based Network Traffic Analysis for Incident Investigation
Get PDFIn this presentation, we introduce a new approach to analyzing network traffic data using associations. In the beginning, we discuss the benefits and issues of currently used analysis tools. Next, we propose a new data representation model and utilization of a graph database to store such data. In the main part of the presentation, we introduce the Granef toolkit and its use for incident investigation
Relationships among achievement motivation, grades, and aspirations: English as a foreign language
Get PDFAchievement motivation in English as a foreign language became of great interest for teachers, parents, as well as researchers; as English became acommon language for all developed countries. Empirical research in this area world-wide is quite rich. However, findings for Czech students are scarce.Our study uses logistic regression models to determine the relation between reported student achievement motivation measured by the need forachievement (NfA) and the need to avoid failure (NtAF) and grades and aspirations to further study. The probability research sample consisted of 462students at the end of their compulsory education in the Czech Republic (9 grade). NfA was found to be a positive predictor and NtAF was a negativepredictor of student final grade in English, receiving a final report card with honours, as well as aspiration to study at an elite upper secondarycomprehensive school. The effect of NfA on grades and aspiration was, on average, lower for males than for females. The effect of NtAF for males was,on average, higher. In our further research, we are preparing an application of the anchoring vignette method to cope with possible differences in scaleusage among respondents and test if the relations will be stronger.Identifikace rozdílů v úrovni motivace k učení se angličtině a jejího vztahu ke studijním výsledkům a aspiracím žáků je podstatným úkolem pro výzkumníky. Poznatků v této oblasti u českých žáků je však málo. Tato studie si klade za cíl identifikovat vztah mezi úrovní výkonové motivace v angličtině a studijními výsledky a aspiracemi žáků. Výsledky dotazníkového šetření mezi žáky devátých ročníků základních škol (N = 324) ukazují, že potřeba úspěšného výkonu (PÚV) v angličtině je pozitivním prediktorem a potřeba vyhnutí se neúspěchu (PVN) v angličtině negativním prediktorem známky z angličtiny na vysvědčení, získání vyznamenání, budoucí aspirace žáků studovat na gymnáziu. Pro chlapce byl efekt PÚV na tyto indikátory v průměru nižší a naopak, efekt PVN v průměru vyšší než pro dívky (rozdíly však většinou nebyly statisticky signifikantní). Potvrzení těchto zjištění vyžaduje další výzkum, který by bral v úvahu rozdíly v užívání škál mezi žáky (např. skrze aplikaci metody ukotvujících vinět)
SoluProt: prediction of soluble protein expression in Escherichia coli
Get PDFMotivation: Poor protein solubility hinders the production of many therapeutic and industrially useful proteins. Experimental efforts to increase solubility are plagued by low success rates and often reduce biological activity. Computational prediction of protein expressibility and solubility in Escherichia coli using only sequence information could reduce the cost of experimental studies by enabling prioritization of highly soluble proteins. Results: A new tool for sequence-based prediction of soluble protein expression in E.coli, SoluProt, was created using the gradient boosting machine technique with the TargetTrack database as a training set. When evaluated against a balanced independent test set derived from the NESG database, SoluProt's accuracy of 58.5% and AUC of 0.62 exceeded those of a suite of alternative solubility prediction tools. There is also evidence that it could significantly increase the success rate of experimental protein studies
Reliabilita a faktorová validita dotazníku SPARO
Get PDFV roce 2009 patřil dotazník SPARO k nejpoužívanějším metodám psychologické diagnostiky v ČR (Urbánek, 2010), a to zejména mezi psychology působícími v personalistice, vězeňství, policii a armádě. Empirické důkazy jeho validity a reliability ovšem chybějí. S využitím rozsáhlého vzorku policistů a uchazečů o práci u policie jsme proto ověřili reliabilitu a faktorovou validitu dotazníku. Výsledky ukazují, že vnitřní konzistence je neuspokojivá u zhruba poloviny škál, jednotlivé škály navíc nejsou jednodimenzionální. Faktorová validita je problematická zejména u hlavních komponent dotazníku, které spolu oproti předpokladům silně korelují. Tyto korelace navíc byly přítomny i v původních standardizačních vzorcích, protože se neliší námi pozorované a originální korelační matice. Faktorová struktura dvou „obecnějších faktorů“ je komplikovaná, nelze v rozporu s teorií identifikovat dvě nezávislé latentní proměnné. Výsledky nepodporují využití dotazníku v běžné praxi. Za tímto účelem by bylo nezbytné prokázat prediktivní validitu jednotlivých škál dotazníku; souběžnou validitu ověřujeme v další studii (Cígler & Rudá, 2021).In 2009, the SPARO questionnaire was one of the most used assessment methods in the Czech Republic (Urbánek, 2010), especially between psychologists in human resources, prisons, police, or the army. However, empirical evidence of its reliability and validity is missing. Using a significant sample of police officers and applicants to police, we researched the questionnaire's reliability and factor validity. About half of the scales do not have adequate internal consistency; the majority of them are not unidimensional. Factor validity is questionable, especially in the main components of the questionnaire, which are highly correlated. These correlations were also present in the original standardized samples as our and original correlation matrices do not differ. The factor structure of the two general factors items is not clear and two-dimensional. Our results do not support the use of the questionnaire in practice. It is necessary to confirm its’ predictive validity; the criterion validity is evaluated in our follow up study (Cígler & Rudá, 2021)
Limity aplikace ustanovení § 577 ObčZ na příkladu lichvy
No full textČlánek hodnotí ustanovení 577 jako zvláštní vyjádření zásady in favorem negotii (in favorem contractus). Zvláštní pozornost je věnována výkladu a aplikačním limitům uvedeného ustanovení. Na příkladu lichvy je ukázáno, že zachování platnosti smlouvy není vždy žádoucí - právní úkony, které jsou v rozporu s dobrými mravy, nelze chránit s odkazem na skutečnou vůli smluvní strany, neboť taková praxe by byla v rozporu se ochranný a sankčně-motivační.The article evaluates a provision of 577 CC as a special expression of the principle in favorem negotii (in favorem contractus). Particular attention is given to the interpretation and the application limits of mentioned provision. On the example of usury is shown that maintaining the validity of the contract is not always desirable - legal acts that are contrary to good morals cannot be protected with reference to the true will of the contracting party, as such a practice would be contrary to the protective and sanction-motivating effect of invalidity
Social Marketing Challenges in Western Balkans: Evidence From Kosovo
Get PDFIn a global world, doing business in heavy industry is becoming a concern to the environment. The need for production, export, and consumption under these circumstances has come as a challenge for marketers, consumers and surrounding residential population. The Western Balkan countries include Albania, Bosnia and Herzegovina, North Macedonia, Serbia, Montenegro and Kosovo. Kosovo has witnessed a considerable economic transformation during recent years, but is has fallen short of considering and implementing a strategy for the preservation of the environment. Kosovo is relatively rich with underground and surface resources, having large quantities of minerals and coal. But despite this, Kosovo continues to be the most underdeveloped country in the region. Exploiting these resources can have a great impact on economic growth and with it, consumer needs are more satisfied. Social marketing has a major impact on the activities of businesses in these areas and ensures that these businesses operate in accordance with certain rules and laws. This would also help in matters of general health of the population. Through Pearson's correlation and case studies, recommendations and conclusions will be given on the studied topic. The results show that there are positive and negative relationships between the variables which are significant.In a global world, doing business in heavy industry is becoming a concern to the environment. The need for production, export, and consumption under these circumstances has come as a challenge for marketers, consumers and surrounding residential population. The Western Balkan countries include Albania, Bosnia and Herzegovina, North Macedonia, Serbia, Montenegro and Kosovo. Kosovo has witnessed a considerable economic transformation during recent years, but is has fallen short of considering and implementing a strategy for the preservation of the environment. Kosovo is relatively rich with underground and surface resources, having large quantities of minerals and coal. But despite this, Kosovo continues to be the most underdeveloped country in the region. Exploiting these resources can have a great impact on economic growth and with it, consumer needs are more satisfied. Social marketing has a major impact on the activities of businesses in these areas and ensures that these businesses operate in accordance with certain rules and laws. This would also help in matters of general health of the population. Through Pearson's correlation and case studies, recommendations and conclusions will be given on the studied topic. The results show that there are positive and negative relationships between the variables which are significant
Language Development in Early Childhood : Quality of Teacher-Child Interaction and Children’s Receptive Vocabulary Competency
Get PDFHigh-quality teacher-child interactions in early learning environments have been regarded as a key contributor to children’s early language and cognitive development in international scholarships. Little is known, however, about the longitudinal effects of children’s receptive vocabularies in the Chinese context. In this study, we addressed the question of such longitudinal effects by examining the predictive effect of preschool teacher-child interaction quality on children’s subsequent receptive vocabulary development in 42 kindergartens in Guangdong Province China. The results in a nested design showed that except for the factor of Emotional Support, the other two factors (Classroom Management and Instructional Support) were positive predictors to children’s vocabulary competency from K2 (T1) to K3 (T2) at preschools. Findings contribute to the growing international literature on the critical role teacher-child interaction quality plays in children’s language and literacy learning and development. Implications for enhancing communication channels between early childhood (EC) educators and decision-makers, and the strategies of the improvement of language and literacy teachers’ professional development are also discussed
Samotnìst’ ì bezduchovnìst’ suspìl’stva kìncja CHCH stolìttja v ukrajins’kìj ì čes’kìj lìteraturì
No full textNa materìalì tvorìv staršoho pokolìnnja proanalìzovano chudožnje osmyslennja tohočasnoho suspìl’stva, jake postaje jak «neljuds’ke» ta pozbavlene duchovnostì. Ekzystencìjna pravda pro ljudynu, jaka opynjajet’sja v takomu seredovyščì, prytamanna novelam čes’koho prozajika Jana Balabana ta romanam ukrajins’koho pys’mennyka Olesja Ul’janenka (avtory takož blyz’kì za vìkom). Jichnja tvorčìst’ je hlyboko fìlosofs’koju, ekzystencìjnoju ta proponuje svìt zovsìm ìnšych personažìv, anìž proza dvoch poperednìch molodych avtorìv. Jan Balaban ta Oles’ Ul’janenko vybyrajut’ personažìv na uzbìččì suspìl’stva, zazvyčaj nevdach, jakì ne majut’ suspìl’noho stanovyšča abo možlyvostej dlja samorealìzacìji v sučasnìj eposì, odnak jichnì dušì duže čutlyvì ta spryjnjatlyvì, vony znachodjat’ sens vlasnoho žyttja krìz’ fìlosofs’ke osmyslennja ljudyny, šljach jakoho často proljahaje krìz’ pošuky Boha.V příspěvku nastiňujeme tvorbu generačně blízkých spisovatelů – českého novelisty Jana Balabána a ukrajinského Olesja Uljanenka. Jejich tvorba je myšlenkově hluboká, existenciální a nabízí celkem jiné postavy než prózy předcházejících mladých autorů. Vybírají si postavy na okraji společnosti, neúspěšné ztroskotance, kteří ve dnešní společnosti nemají žádné postavení nebo místo k seberealizaci, jejich duše však jsou velmi citlivé a vnímavé, hledání vlastního smyslu života vnímají ostře, často skrze vyjádření stavů samoty a pocitů prázdna, jejichž překonání vidí v obracení k Bohu a hledání duchovního smyslu bytí
Non-invasive brain stimulation for speech in Parkinson’s disease: A randomized controlled trial.
Get PDFBackground: Hypokinetic dysarthria is a common but difficult-to-treat symptom of Parkinson's disease (PD). Objectives: We evaluated the long-term effects of multiple-session repetitive transcranial magnetic stimulation on hypokinetic dysarthria in PD. Neural mechanisms of stimulation were assessed by functional MRI. Methods: A randomized parallel-group sham stimulation-controlled design was used. Patients were randomly assigned to ten sessions (2 weeks) of real (1 Hz) or sham stimulation over the right superior temporal gyrus. Stimulation effects were evaluated at weeks 2, 6, and 10 after the baseline assessment. Articulation, prosody, and speech intelligibility were quantified by speech therapist using a validated tool (Phonetics score of the Dysarthric Profile). Activations of the speech network regions and intrinsic connectivity were assessed using 3T MRI. Linear mixed models and post-hoc tests were utilized for data analyses. Results: Altogether 33 PD patients completed the study (20 in the real stimulation group and 13 in the sham stimulation group). Linear mixed models revealed significant effects of time (F(3, 88.1) = 22.7, p < 0.001) and time-by-group interactions: F(3, 88.0) = 2.8, p = 0.040) for the Phonetics score. Real as compared to sham stimulation led to activation increases in the orofacial sensorimotor cortex and caudate nucleus and to increased intrinsic connectivity of these regions with the stimulated area. Conclusions: This is the first study to show the long-term treatment effects of non-invasive brain stimulation for hypokinetic dysarthria in PD. Neural mechanisms of the changes are discussed. (c) 2021 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Slábne v ČR mezigenerační přenos rozvodu?
Get PDFPráce se zabývá efektem rozvodu rodičů na rozpad vlastního manželství respondenta. Pomocí analýzy přežití se snaží zjistit, zda mezigenerační přenos rozvodu v České republice slábne v čase. K analýze jsou využita česká data z Generations and Gender Survey (GGS) z roku 2005 a výsledky potvrzují předpoklad o proměnlivém efektu rozvodu rodičů. V nejstarší manželské kohortě byl tento efekt bezvýznamný, poté nicméně mezigenerační přenos rozvodu zesiloval a u manželství uzavřených mezi lety 1980–1989 platilo, že děti rozvedených rodičů měly 3,7krát vyšší riziko rozvodu než děti nerozvedených rodičů. V poslední manželské kohortě, tj. u manželství, která vznikla v letech 1990–2005, efekt rozvodu rodičů významně oslabil, přesto však zůstal významným: děti z rozvedených rodin měly nadále dvakrát větší riziko, že jejich vlastní manželství skončí rozvodem. Ke sbližování úrovně rozvodovosti respondentů s rozvedenými a nerozvedenými rodiči přispívají změny v síle rozvodovosti v obou skupinách: u dětí z nerozvedených rodin se rozvodovost posiluje, u dětí z rozvedených rodin naopak v poslední manželské kohortě úroveň rozvodovosti oslabuje.This study investigates changes in the effect of parental divorce on the odds of union dissolution in children in the Czech Republic. Using survival analysis and Czech GGS data, it shows that the intergeneration transmission of divorce varied over marital cohorts to a significant degree. While parental divorce had insignificant effect in the oldest marriage cohort, it subsequently grew. In the 1980–1989 marriage cohort, the risk of divorce was 3.7 times higher among children of divorced parents than among children whose parents did not divorce. In the most recent marriage cohort (1990–2005), the parental divorce effect weakened but was still significant: children of divorced parents experienced a divorce risk that was twice as high that of children from intact families. This convergence of divorce risks resulted from two parallel trends: the rising divorce risk among children from non-divorced families and the declining divorce risk among children of divorce