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Utilization of wireless transfers in J2ME applications
Mikulecký, Miloš ; Kovář, Petr (referee) ; Jeřábek, Jan (advisor)
This Bachelor´s thesis consider to problemation of programing J2ME aplication with specialized on wireless transfers. As the wireless technology was selected technology Bluetooth, what is implemented on the majority mobile phones at now. Aplication was projected and realized enabling transfers short messages between mobile phones over interface Bluetooth. The aplication was developed in programation enviroment NetBeans. The aplication was tested on some mobile phones different marks and types. It turned out, that some mobile phones is differnet, though mobile phones are of the same mark.
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Utilization of wireless transfers in J2ME applications
Mikulecký, Miloš ; Kovář, Petr (referee) ; Jeřábek, Jan (advisor)
This Bachelor´s thesis consider to problemation of programing J2ME aplication with specialized on wireless transfers. As the wireless technology was selected technology Bluetooth, what is implemented on the majority mobile phones at now. Aplication was projected and realized enabling transfers short messages between mobile phones over interface Bluetooth. The aplication was developed in programation enviroment NetBeans. The aplication was tested on some mobile phones different marks and types. It turned out, that some mobile phones is differnet, though mobile phones are of the same mark.
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Prediction of solar activity in the 24th and 25th cycles
Střeštík, Jaroslav ; Mikulecký, M.
In the half of nineties we prepared a prediction of solar activity in cycles No 23 to 26. For this prediction we used the data from 1500-1995 representing 10 significant period lengths with lowest p-values. Using the superposition of these sine waves the data of 1500-1995 were excellently fitted. The prediction for 1996-2040 was constructed as an extrapolatlon of this course. We predicted that cycles No 23 and 24 wtll be longer and the value of sunspot numbers in the maximum will be lower than that in the cycle No 22. These predictions have been so far roughly fulfilled, except only the maximum of the 23rd cycle appeared in reality a little earlier. This is why the descending part of the 23rd cycle observations found itself closely under the 957o tolerance corridor of our prediction. Using now the data since 1500 till 2010 and the same prediction method we prepared anew prediction for the cycles No 24 and 25. Both cycles should be also longer, similarly as the cycle No23 in our first predlction as well as in the reality. Values of sunspot numbers in maxima should be even lower.
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The progress of wheat prices in France and in Germany between 1531 and 1785
Střeštík, Jaroslav ; Mikulecký, M. ; Mikulecký, L.
Mean annual wheat prices in Paris and in Cologne during the 16th – 18th century display a considerable similarity, which may be expected due to the small geographical distance. In the long-term scale the prices increase, later the increase becomes slower, and this course is similar in both countries. This variation is supplemented by short-time fluctuations, again similar in both countries. In the spectra of these time series a significant peak appears in the periods near 130 and 60 years, further ones near 35 and between 14-15 years, the latter being more apparent in data from Paris. The period of solar cycle (11 years) is not significant here. Correlation with mean annual air temperatures and mean annual sunspot numbers is negative, but only a little above the limit of significance (it moves between 0.14 and 0.22). In the long-term change long-term variations of mean annual air temperatures and solar activity, valid for both countries, reflect themselves. After subtraction of the parabolic trend these correlations become lower, on the other hand, correlations with precipitation totals are more distinct. All correlations are a little higher in Germany than in France.
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Possible periodicities in occurrence of wars in Europe during the last 500 years
Střeštík, Jaroslav ; Mikulecký, M.
The occurrence of wars and their regularities are always the subject of investigation for historians. During centuries one can find some relatively quiet periods as well as periods of frequent war conflicts. For a quantitative research special indices have been constructed some time ago, which are done for each year starting 1495 till 1975. In this series some significant periodicities can be found. The most significant appears around 55 years, further ones around 131, 78, and 35 years, and also some periods less significant. No one of them corresponds to significant periods occurring in most heliogeophysical quantities; only for some less significant a similarity can be found. Therefore the correlation with solar activity as well as with mean annual air temperatures is low, though not to be neglected. The similarity is higher for long-term variations than for shortterm fluctuation. During the long-term maximum of solar activity and long-term maximum of air temperatures, which occurs usually simultaneously, a quieter period may be expected.
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Frequency of worldwide terroristic acts since the end of sixties
Střeštík, Jaroslav ; Grigoryev, P. ; Mikulecký, M.
The analysis was performed on the eight geopolitical areas (Africa, Eastern Europe, Middle East and Persian Gulf, North America, Central and South America, South-East Asia and Oceania, South Asia, and Western Europe), on their sum and on the solar and geomagnetic variables. There is a good correlation between frequencies of terroristic attacks in different regions. There is also a strong connection between terroristic attacks on one side and some heliogeophysical factors on the other side. All connections are different for different regions and external factors, respectively. Nevertheless, most of them are significant. The relationship to factors describing geomagnetic activity is a little higher than that for factors of solar activity.
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Salmonellosis and some solar and geomagnetic parameters
Střeštík, Jaroslav ; Mikulecký Jr., M. ; Mikulecký, M.
Salmonellosis is a common infection in our country and therefore it is necessary to investigate which factors contribute to the increase of its incidence. The influence of tidal acceleration has been investigated earlier and some semilunar variations have been found. The influence of heliogeophysical factors was not investigated though laboratory studies proved some connections. In this contribution daily numbers of hospital admissions at the Infectology Clinic in Bratislava from 2005-2006 have been used. The incidence of salmonellosis is considerably higher in summer than in winter, the maximum of incidence appears after the maximum of air temperature with a time shift more than one month. The higher geomagnetic activity contributes to higher incidence of salmonellosis too. Its influence is more significant than that of solar activity.
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Tree stem diameter and the Moon: a detailed analysis of periodic relationships
Mikulecký, M. ; Střeštík, Jaroslav
Zürcher and Cantiani (Nature, 1998) reported "a strong correlation" between rhythmic fluctuations of diameter of spruce stem on one side and gravimetric lunisolar tides on the ohter. The relationship between stem diameter D and tidal force G has been tested by more exact biometrical means. The 75 diameter and gravity hourly values have been processed by the Halberg cosinor regression and by Bartlett cross-"correlation". The higher peaks of the stem curve are located at 0,7-2,8 hours later than the peaks of the inverted tides. The cross-"correlation" between D and G as the function of time lag shows a 24-hour periodicity with its maximal significant deviation from zero for G delayed after D by 4 hours.
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