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Search Results: 1 - 10 of 3544 matches for " Alexandra Veverková "
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PRODUCTION PARAMETERS OF SUNFLOWER (HELIANTHUS ANNUUS. L.) INFLUENCED BY WEATHER CONDITIONS AND FOLIAR APPLICATION OF PENTAKEEP - V AND ATONIK
Ivan ?erny,Alexandra Veverková
Journal of Microbiology, Biotechnology and Food Sciences , 2012, DOI: 13385178
Abstract: In field trials with sunflower was monitored the influence of yearly weather conditions and foliar applications of both Atonik and Pentakeep V on a yield and fat content in sunflower achenes (hybrids Alexandra PR, NK Alego and NK Brio) in years 2009 – 2010. Experimental task was realized by field polyfactorial experiments established in warm corn production area (climatic region: warm; climatic subregion: dry; climatic zone: warm, dry with mild winter and longtime sunshine, brown soil) in Center of Plant Biology and Ecology of FAFR SUA in Dolná Malanta. The trials were established by split plot design with randomized complete blocks base design. From two-year small plot trials was found statistically non-significant impact of weather conditions of year, hybrids and application of Atonik and Pentakeep – V on achene yield of sunflower. The impact of monitored factors on fat content was statistically high significant. In variable yearly weather conditions higher average yield and achene fat content was achieved in year 2010. The most adaptable for production on concrete agroecological conditions were hybrids NK Brio and Alexandra PR (3.03 t ha-1), for fat content NK Brio (44.25 %). Foliar application of Pentakeep V in dose 0.1 l ha-1, 0.5 l ha-1 respectively most significant influenced the yield of achenes (3.43 t ha-1), fat content (44.71 %) respectively.
INFLUENCE OF HYBRIDS ON FORMATION OF YIELD-FORMING ELEMENTS OF SUNFLOWER (HELIANTHUS ANNUUS L.)
Alexandra Veverková,Ivan ?erny
Journal of Microbiology, Biotechnology and Food Sciences , 2012, DOI: 13385178
Abstract: Field polyfactorial trial was carried out on experimental base Center of the Plant Biology and Ecology in Nitra Dolná Malanta in years 2009 – 2010. In the experiment was studied the impact of temperature and precipitation conditions of experimental years 2009 and 2010 on creation of yield – forming elements (number of plants per unit area, number of heads per unit area, average of head, weight of head, WTA – weight of thousand achenes), yield and fat content of sunflower. Within biological material were used hybrids NK Ferti and NK Simfoni. Experimental years 2009 and 2010 were in term of weather conditions very different. From total evaluation of impact of experimental year and biological material on creation and forming of yield - forming elements flows that more favorable was year 2009 for temperatures and precipitation. Higher yields and fat content were found in year 2010. Within the yield – forming creation, quantity and quality was more preferable the hybrid NK Ferti.
Modeling Spatial Opportunity Structures and Youths’ Transitions from School to Training  [PDF]
Alexandra Wicht, Alexandra Nonnenmacher
Open Journal of Statistics (OJS) , 2017, DOI: 10.4236/ojs.2017.76071
Abstract: This paper examines the significance of spatial externalities for youths’ school-to-training transitions in Germany. For this purpose, it is necessary to address the methodological question of how an individual’s spatial context has to be operationalized with respect to both its extent and the problem of spatial autocorrelation. Our analyses show that the “zone of influence” comprises of the whole of Germany, not only close-by districts, and that these effects differ between structurally weak and strong regions. Consequently, assuming that only close proximity affects individual outcomes may disregard relevant contextual influences, and for spatial models that require an a priori definition of the weights for spatial units, it may be erroneous to make a decision based on this assumption. Concerning spatial autocorrelation, we found that neglecting local spatial autocorrelation at the context level causes considerable bias to the estimates, especially for districts that are close to the home district.
Verbal Aggressiveness and Leadership Style of Sports Instructors and Their Relationship with Athletes’ Intrisic Motivation  [PDF]
Alexandra Bekiari
Creative Education (CE) , 2014, DOI: 10.4236/ce.2014.52018
Abstract:

The purpose of the study was to examine intrinsic motivation of athletes and its relation with instructors’ verbal aggressiveness and leadership style. The sample of the study consisted of 168 athletes (95 boys and 73 girls), 15 - 19 years old (M = 16.5, SD = 0.5), participating in different individual and team sports (basketball, volleyball, football, long jump, pole vault, 200 m). Every participant completed three questionnaires, the Verbal Aggressiveness Questionnaire, the Intrinsic Motivation Inventory, and the Leadership Scale for Sports. The results revealed differences existing among variables of the instruments in terms of sex and type of sport (individual or team sport and contact or non contact sport). Pearson correlation revealed a significant positive relationship of coaches’ verbal aggressiveness with anxiety, autocratic style, and a negative significant relationship concerning coaches’ verbal aggression with enjoyment, ability, effort, and democratic style. Findings and implications for instructors’ type of communication were discussed and future research suggestions were included.

Verbally Aggressive Instructors and Machiavellian Students: Is the Socio-Communicative Style an Over-Bridging?  [PDF]
Alexandra Bekiari
Psychology (PSYCH) , 2017, DOI: 10.4236/psych.2017.810095
Abstract: Goals of this research are: 1) to examine the role of gender, 2) to explore the relationship between perceived instructors’ verbal aggressiveness, socio-communicative style and students’ Machiavellian tactics, 3) to investigate the influence of instructors’ verbal aggressiveness on their socio-communicative style and students’ Machiavellian tactics in physical education context and 4) to propose a students’ and instructors’ typology which will be the final over-bridging of verbal aggressiveness and Machiavellianism through communication style. The sample consisted of 269 students (141 males, 128 females) aged 12 - 14 years old (M = 12.6, SD = 0.65) from secondary public schools who completed three types of questionnaires during physical education classes. The results supported the internal consistency of the instruments. According to the results of the study, statistically significant differences were observed in perceived instructors’ verbal aggressiveness, responsiveness, assertiveness and students’ amoral manipulation, desire for control, desire for status, distrust of others between the genders of the students. Correlational analysis indicated that perceived instructors’ verbal aggressiveness was positively related to assertiveness, amoral manipulation, desire for control, desire for status, distrust of others and was negatively related to responsiveness. The results of regression analysis revealed that perceived instructors’ verbal aggressiveness could significantly predict the variables of responsiveness, assertiveness, desire for status and distrust of others. Three behavioral types are revealed: 1) the unrestraint, 2) the responsive, and 3) the distrustful, where verbal aggressiveness appears to be connected with Machiavellianism through communication style in these particular combinations.
LAN Tool: A GIS Tool for the Improvement of Digital Elevation Models Using Drainage Network Attributes  [PDF]
Alexandra Gemitzi, Odysseas Christou
Journal of Geographic Information System (JGIS) , 2013, DOI: 10.4236/jgis.2013.54031
Abstract:

Digital Elevation Models (DEMs) are constructed using altitude point data and various interpolation techniques. The quality and accuracy of DEMs depend on data point density and the interpolation technique used. Usually however, altitude point data especially in plain areas do not provide realistic DEMs, mainly due to errors produced as a result of the interpolation technique, resulting in imprecise topographic representation of the landscape. Such inconsistencies, which are mainly in the form of surface depressions, are especially crucial when DEMs are used as input to hydrologic modeling for impact studies, as they have a negative impact on the model’s performance. This study presents a Geographical Information System (GIS) tool, named LAN (Line Attribute Network), for the improvement of DEM construction techniques and their spatial accuracy, using drainage network attributes. The developed tool does not alter the interpolation technique, but provides higher point density in areas where most DEM problems occur, such as lowland areas or places where artificial topographic features exist. Application of the LAN tool in two test sites showed that it provides considerable DEM improvement.

Mindfulness as a Factor in the Relationship between Insecure Attachment Style, Neurotic Personality and Disordered Eating Behavior  [PDF]
Aileen Pidgeon, Alexandra Grainger
Open Journal of Medical Psychology (OJMP) , 2013, DOI: 10.4236/ojmp.2013.24B005
Abstract:

Mindfulness, conceptualized as a dispositional trait that differs across individuals, may potentially influence disordered eating behaviors. Previous research has independently identified insecure attachment style and neurotic personality traits as correlates of disordered eating behavior. Thus this current study will investigate whether neurotic personality traits, insecure attachment style and mindfulness predict disordered eating behavior controlling for gender differences. Participants (N = 126) completed the Adult Attachment Scale [1], the Three Factor Eating Questionnaire – Revised 18 [2], The Cognitive and Affective Mindfulness Scale – Revised [3] and the International Personality Item Pool [4]. The results of this cross-sectional study indicated that neurotic personality traits, insecure attachment style and mindfulness were related to disordered eating behaviors. The variance in disordered eating behaviors that was accounted for by neurotic personality traits and insecure attachment style was significantly reduced with the introduction of mindfulness. The results provides preliminary support for the inclusion of mindfulness training in disordered eating behavior interventions for individuals exhibiting an insecure attachment style and neurotic personality traits. Limitations and implications for further research are discussed.

Urban Trends and Economic Development in China: Geography Matters!  [PDF]
Michel Dimou, Alexandra Schaffar
Current Urban Studies (CUS) , 2014, DOI: 10.4236/cus.2014.23016
Abstract: The aim of this paper is to document the role of spatial effects in the relationship between urban trends and economic development in China, between 1984 and 2004. During this period the Chi-nese urban system experienced dramatic changes, with significant rural-urban, intra-provincial and interprovincial migration, mainly after the 1993 reforms that eased the former Hukou rule and abolished the prevailing cross-region labor mobility restrictions. This study draws upon recent econometrical tools based on spatial panel data models, developed in order to deliver evidence for a linear relationship between urbanization rates and GDP per capita and an inverted-U relationship between urban primacy and GDP per capita in the Chinese provinces.
Depicting Determinants and Effects of Intimacy and Verbal Aggressiveness Target through Social Network Analysis  [PDF]
Nikolaos Hasanagas, Alexandra Bekiari
Sociology Mind (SM) , 2015, DOI: 10.4236/sm.2015.53015
Abstract: Aim of this research is to suggest determinants and effects of intimacy (including also its extreme forms such erotic relation or life-partnership), measured in term of its effect, attraction, as well as to analyze relations between attraction and verbal aggressiveness. Complete social network analysis has been conducted in a class of students of Physical Education Department, University of Thessaly (N = 53). The data were collected with standardized questionnaires. Network analysis software (Visone) as well as cross-sectional analysis (SPSS) has been implemented. The results are: Attractiveness is gender-specific, as it is connected with male students. Younger students tend to be more attractive in physical appearance and dressing. The mother’s pedagogic influence becomes evident on the attractiveness of someone for life-partnership. The academic conformity is not conducive to the development of pleasant discussions. Spending money for entertainment and impressing try to outweigh attractive physical appearance. Being aware of preference for durable erotic relation strengthens self-confidence. A companionship seems to be of socio-intellectual or of emotional-sexual nature. Attractiveness seems to lead to verbal aggression. It seems also to reduce the tendency to escape to imaginary sceneries. Physical dimension appears to be stronger than mental parameters for maintaining a durable erotic relation. The desire for life-partnership without children appears to be favored by mental elements. Verbal-aggressors search for targets without meticulously examining weaknesses and strengths on each person. Distinct types of attractiveness are also detected, corresponding to the following patterns: general sociability (“friend”) which is also connected with mild (narcissistic) exploitation, erotic relation (“erotic”) which is an autonomous value system based on superficial criteria related to appearance, focusing on communication (“distant communicable”), being an idol (“fully narcissistically exploitable”) without any reality basis, and life-long occupation of a person (“life-long exploitable”).
Suggesting Indicators of Superficiality and Purity in Verbal Aggressiveness: An Application in Adult Education Class Networks of Prison Inmates  [PDF]
Alexandra Bekiari, Nikolaos Hasanagas
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.43035
Abstract: Aim of this research is to suggest indicators, based on social network analysis, that distinguish superficial, idiosyncratic and strategic verbal aggressiveness. Two classes of an adult education school (at secondary level) in a prison have been selected as network samples (A class = 23 and B class = 12 prisoners). Complete network analysis has been applied, using standardized questionnaires. The network variables have further processed through Pearson correlation. Indicators of superficial and pure roles, particularly incremental and proportional behavior, have been applied in two forms of verbal aggressiveness (criticism and threatening). The superficial behavior (SB: outdegree of verbal aggressiveness) seems to be a quite sensitive indicator, as it presents correlations with various other relational forms of familiarity, aggressiveness and appreciation/socialization. The incremental behavior (IB: difference of received from outgoing actions) is also a sensitive indicator, revealing, however, different results. Pure aggressiveness (in terms of difference) seems to be related with quite different causes and/or occasions than the superficial aggressiveness. Incremental behavior is likely to be at first place driven by the idiosyncrasy rather than by exogenous factors and seems to constitute a completely different notion than the SB. The proportional behavior (PB: ration of outgoing to the received actions) of aggression is a quite insensitive indicator, as it depends only on a few behavioral variables. It seems to reveal a rational strategy of adaptability. Thus, it characteristically differs from the indicators of superficiality (expressing reciprocity patterns) and of the incremental aggressiveness (expressing individualism).
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