Jesus has definitely conquered the world, but our history is continuous. The one who is called in the Bible as the Devil, Satan, and Deceiver of all the earth (cf. Rev 12:9), though already defeated, is still at work in the world. The essence of Satan’s action is to pretend that he is the true Savior of man. In Revelation 13 there is a dragon (the devil) that summons
the first beast and the second beast (a false prophet) and thus they form the diabolical triad. The well-known saying that the devil is simia Dei could be paraphrased and at the same time clarified that the devil is simia Trinitatis. In fact, Satan imitates and mocks, like the monkey, the Holy Trinity to deceive people. When tempting Jesus in the desert, the goal of the evil spirit was not only to tempt Jesus, the Incarnate Son, but the Trinity as a whole. The devil tries to challenge the Trinitarian relations, i.e., the mutual relationship of the Son and the Father in the Holy Spirit. This is the reason why Jesus defies the attacks of the devil not referring to His Divinity but by pointing to the Father and His will. The juxtaposition of the dynamics of the action of the Holy Trinity, the Father, the Son, and the Holy Spirit, with the dynamics of the action of the triad, the dragon and his two beasts, allows us to capture the essential features of, on the one hand, the community in the Trinity, and on the other hand, the corrupt synergy of the triad assigning the Divine features to themselves.

O potrzebie zmiany postrzegania puszczy.

Po wejściu Polski do Unii Europejskiej słyszy się o konieczności współpracy przemysłu i nauki. Do takich kontaktów dużą wagę przywiązywał zawsze Instytut Podstawowych Problemów Techniki.

Otym, jak aktualna może być dewiza z czasów insurekcji kościuszkowskiej o biogazowej przyszłości Polski i zdrowych wędlinach, opowiada dr hab. Paweł Kowalczyk z Instytutu Fizjologii Żywienia Zwierząt im. Jana Kielanowskiego PAN.

In the paper, on the basis of several dozen examples of hydronyms from eastern and north-eastern Mazovia, the erroneous attribution of written sources and, as a consequence, their incorrect identification and location were shown. These kinds of mistakes can be found in toponymical, hydrographical and historical publications. It is the result of taking attestations from the context of the source, poor knowledge of the history and the geography of the studied area, as well as the poor knowledge of Latin and the lack of verification of hypotheses found in older literature.

This article deals with the name of the town Węgrów on the river Liwiec, whose name is based on the obscure hydronym Węgra Potok. This name is juxtaposed with another place name, Węgra, which is found near Przasnysz and is named after the river Węgra (today known as Węgierka), as well as other names beginning with wągr-||węgr-. The author challenges Witczak’s (2015) hypothesis that the name of Węgra comes from the Sudovian (Jatvingian, Yotvingian) language. The article raises historical, archaeological and geographical arguments that oppose the possibility of a Yotvingian influence in these regions. Consequently, the author contends that the place names have a Slavonic root, linked to the noun węgorz (a type of fish), or the meandering nature of both rivers. There is also a discussion of the name patok||potok (stream/brook).

In the study the comparative analysis of test results of drainage of municipal wastewater sludge was conducted with the use of flocculant Praestol 855BS and the mixture of flocculant Praestol 855BS 50% + orange essential oil 50%, as the reagents supporting this process. It was also attempted to reduce unpleasant smells exuding from the drained sludge.

The process of drainage of municipal wastewater sludge was conducted in the laboratory setting centrifuge of MPW-350 type. The variable independent parameters were centrifugation time, centrifugation speed, dosage of flocculant Praestol 855BS as well as dosage of mixture in the proportion of flocculant Praestol 855BS (50%) + orange essential oil (50%). The following parameters were subject to assessment: water content in the sludge, dry mass content in the reflux as well as time of maintenance of the oil’s smell in the sludge. The conducted tests demonstrated that the orange essential oil has an impact on drop in resultant quality parameters of the drainage process of municipal wastewater sludge. Batching of the orange essential oil has an impact on considerable reduction of odours exuding from drained wastewater sludge, and thus on improvement of work conditions connected with operation of centrifugal separators. Bearing in mind both the efficient drainage process of wastewater sludge as well as simultaneous reduction of unpleasant smells exuding from the sludge during this process it is assumed and recommended to simultaneously apply both reagents, that is flocculant Praestol 855BS (50%) and orange essential oil, also in the volume of 50%.

The method of a phase shift angle measurement using conditional averaging of delayed signal absolute value (CAAV) is presented in this paper. The input sinusoidal signal x(t) is without noise. White noise with normal distribution and band limited to low frequencies has been applied as disturbance of delayed sinusoidal signal z(t). Noise n(t) - N(0, σn) is added to the delayed signal - the noised and delayed signal z(t) is obtained. The phase angle shift is proportional to time location of CAAV's minimum (minimum of the characteristic of conditional averaging of delayed signal's absolute value). The phase angle shift can be determined on the basis of conditional averaging value of elaborated algorithm. The characteristics of conditional average of delayed signal's absolute value in the surrounding of the minimum of this function (the results of practical investigations and theoretical calculation) are presented. The experimental variance of characteristic CAAV in surroundings of the minimum (obtained from practical investigations and calculation) is illustrated in the paper. The algorithms of conditional averaging have been elaborated and practically realized in the LabVIEW environment.

This paper presents control method for multiple two-wheeled mobile robots moving in formation. Trajectory tracking algorithm from [7] is extended by collision avoidance, and is applied to the different type of formation task: each robot in the formation mimics motion of the virtual leader with a certain displacement. Each robot avoids collisions with other robots and circular shaped, static obstacles existing in the environment. Artificial potential functions are used to generate repulsive component of the control. Stability analysis of the closed-loop system is based on Lyapunov-like function. Effectiveness of the proposed algorithm is illustrated by simulation results.