Dr. Krzysztof Fic of the Poznań University of Technology discusses energy storage, aesthetic medicine’s quest for immortality, and how much time goes into being a scientist.

Managing human consumption has a major impact on the functioning of societies, and – even more importantly – on the condition of our planet. What does the future hold?

Balance, thermodynamic and mainly kinetic approaches using methods of process engineering enable to determine conditions under which iron technology can actually work in limiting technological states, at the lowest reachable fuel consumption (reducing factor) and the highest reachable productivity accordingly. Kinetic simulation can be also used for variant prognostic calculations. The paper deals with thermodynamics and kinetics of iron making process. It presents a kinetic model of iron oxide reduction in a low temperature area. In the experimental part it deals with testing of iron ore feedstock properties. The theoretical and practical limits determined by heat conditions, feedstock reducibility and kinetics of processes are calculated.

The article discusses one of the categories of marketing chrematonyms — the names of cafés, which constitute a colourful element of the naming landscape of Upper Silesia. The analysis has several research aims: 1) discovering the naming techniques and types, 2) the presentation of structural models, 3) identifying the changes of meaning and the (con)textual functionality of linguistic units which serve as a commercial medium of evaluation. The names of cafés are presented from the perspective of cultural linguistics, sociolinguistics and pragmalinguistics, as well as the theory of semantic fields. This combined methodological approach enables the author to draw conclusions about marketing chrematonyms in the sphere of culture and language, whereas the structural-semantic analysis of the onymic description of Upper Silesian cafés reveals tendencies that confirm the fact that naming models are created in a serial way. The material presented indicates that commercial chrematonyms belong to semantically and structurally diversified naming categories. The structures show the repetitiveness of naming, the tendency for language internalization and the use of native material, including local dialects.

The article discusses issues related to improving the energy efficiency of heat supply systems. It draws attention to the need to take action not only for large objects and systems, but also for individual buildings and their boiler plants. Heat supply system monitoring allows for the diagnosis of the weakest elements and making decisions leading to the improvement of energy efficiency. In the case of the boiler room where the research was carried out, the results of such monitoring convinced to equip boilers with an additional automatic control system, with an algorithm limiting the number of burner switching cycles and shutdowns. Limiting the number of switching on the burners, as in the case of other combustion and electric devices, has a significant impact on the energy efficiency of the entire system. In addition, it also increases the durability of the devices, and thus reduces costs of servicing and repairs. The simplest control algorithms, often used in controllers installed in the boiler units, do not provide optimization in this respect. The external device used has allowed the number of burners on and off cycles to be limited while maintaining the quality of the heat supply to the heating installation and the heat treatment system.

The material also presents other ways to improve the energy efficiency of the heat supply system in existing multi-family buildings.

The heat supply systems energy efficiency improvement requires the use of increasingly complex methods. The basic ways to reduce heat consumption is by using better thermal insulation, although they have more and more limited possibilities and need relatively large financial outlays. Good effects can be achieved by the better heat source adaptation to the conditions of a specific facility supplied with heat. However, this requires research that identifies the effectiveness of such solutions as well as the tools used to describe selected elements of the system or its entirety. The article presents the results of tests carried out for a gas boiler room supplying heat to a group of residential buildings. The goal was to build a model that would forecast the day range in which the maximum gas consumption occurs for a given day. Having measurements of gas consumption in subsequent hours of the day, it was decided to build a forecasting model determining the part of the day in which such a maximum would occur. To create the model the random forest procedure was used along with the mlr (Kassambara) package. The model’s hyperparameters were tuned based on historical data. Based on data for another period of boiler room operation, the results of the model’s quality assessment were presented. Close to 44% efficiency was achieved. Tuning the model improved its predictive ability.

This article explores caring through feeding as an important aspect of transnational family life, and analyzes the practices connected to sending food products home, supervising what the family eats, and changing consumption patterns. It focuses on Filipino migrants to the United States who maintain transnational ties with their families. With a history of colonial encounter, the United States has been a popular migration destination, and has also strongly influenced food consumption.

The study shows the ways in which packages from abroad (balikbayan boxes) express love and care, and how they allow migrants to control food consumption of the family in the country of origin. By looking at the goods the immigrants put in the packages, and the way these are received, it is possible to uncover the dynamics of love, care, and intimacy in transnational families, which often translate into power, tensions, and control among family-members. The article analyses how food products sent in the packages work, bringing with them new ideas and practices, creating imaginaries of migration, and building the social prestige of the immigrant. Using the concept of “social remittances”, the article also shows the changing patterns of food consumption in the Philippines.

Within this study, resonance phenomenon, which is one of the crucial problems in mechanical constructions, has been analyzed with respect to oil starvation failure in a ball bearing. A unique test rig is designed, constructed, and placed in a laboratory ambience. A ball bearing on the electrical motor, which is a component of the test rig, has been selected for acquisition of data within triple sensing technology in vibration, acoustic, and electrical consumption through testing conditions. The target of that study is condition monitoring of oil starvation fault and resonance fault for comparison of various predictive maintenance methods. The testing was carried out within the electrical frequency of 40.5 Hz, which actuated the electrical motor in order to identify the rotation speed. According to the analyzed results, oil starvation fault and resonance fault is most accurately inspected by vibration analysis.

Covering a wide area by a large number of WiFi networks is anticipated to become very popular with Internet-of-things (IoT) and initiatives such as smart cities. Such network configuration is normally realized through deploying a large number of access points (APs) with overlapped coverage. However, the imbalanced traffic load distribution among different APs affects the energy consumption of a WiFi device if it is associated to a loaded AP. This research work aims at predicting the communication-related energy that shall be consumed by a WiFi device if it transferred some amount of data through a certain selected AP. In this paper, a forecast of the energy consumption is proposed to be obtained using an algorithm that is supported by a mathematical model. Consequently, the proposed algorithm can automatically select the best WiFi network (best AP) that the WiFi device can connect to in order to minimize energy consumption. The proposed algorithm is experimentally validated in a realistic lab setting. The observed performance indicates that the algorithm can provide an accurate forecast to the energy that shall be consumed by a WiFi transceiver in sending some amount of data via a specific AP.

This article is an attempt to look at how individual freedom is realized in the world of consumption. Consumer freedom understood as a social relationship – and not for example as a gift received from God and the ability to make independent choices between good and evil according to one’s free will – is not a given once and for all. In the case of consumer freedom, some people have this type of freedom, while others are deprived of it, which often results in moral evil. Freedom in a world where ‘a menu replaces the Decalogue’ is first and foremost a freedom to consume, a freedom of those who have the appropriate material means to make use of them. Therefore, it is not a gift given once and for all, but it requires from us – free consumers – constant activity in acquiring funds that allow us to meet the needs of ownership. It only pretends to be accompanied by freedom of choice but in fact is not. Freedom in the world of consumption is implemented mainly in the sphere of everyday life practice and it does not constitute the implementation of any lofty philosophical ideas. It is an impoverished form without proper theoretical foundation. The problem is whether in the world of consumption there is any freedom at all. Unfortunately, most often we only have an illusion of freedom, because choosing to participate in it (more or less consciously), we agree to its prevailing rights. One of the most important rights in the domain of consumption implying is freedom of consumption, or ironically speaking, the free-dom to choose between Coca Cola and Pepsi. But even in its narrow application consumer freedom does not seem to realize any moral good. It is true that various attempts are being made to codify the ethical activity of consumers, traders, producers, etc., but this has nothing to do with the real moral dimension of actions, concerning instead instrumental and performative aspects of those actions by sustaining unreflective choice automatisms.