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Abstract

The article deals with the assessment of production process capability in the serial production of plastic components. The plastic component was used for analysis. Component is used in the automotive industry in car suspension shock absorbers. Assessing the capability of the product’s manufacturing process is very important. The aim of the present paper is to measure the dimensional characteristics of a thermoplastic product as a monitored quality feature. The analyzed product is manufactured in an eightfold injection mold by injection technology. The products from each injection mold cavity were considered separately. Process capability was assessed using capability indices. Process variability and centering were evaluated. Based on the analysis we can say that the production process is in excellent condition.

Abstract

The aim of the study was to assess the selected physical characteristics of the briquettes of English ryegrass waste biomass and its mixtures with waste components from the agri-food industry: pea husks and oat middlings. The raw materials used for the tests are characterized by high calorific value and low ash content. Among the tested raw materials, the most favorable values were recorded for oat middlings in this respect. The produced briquettes were characterized by high volumetric density and very diverse mechanical durability. At the same time, the results of the tests on the mechanical durability of briquettes indicated that the use of components of ryegrass mixtures selected for testing brought unsatisfactory results, as compared to other analyzed physical and energy features.

Abstract

This paper presents how to use the Capability Maturity Model Integration (CMMI) in software engineering modeling processes. Any variation of CMMI, depending on the scope of application, can also be used to assess the process maturity of an organization. Regarding the Software Reliability Engineering (SRE) process, the activities in the SRE process have been briefly described, noting that the application of SRE in all software-based products leads to good control over the development process.

Abstract

Traditional modality of using public property, the concession has played a significant role in the development of the modern state by capitalizing on those goods that by their legal nature have an inalienable character as well as by entrusting some works or public services to legal entities of private law which can execute them or make them more efficient.The economic development of the last decades of the states of the European Union, the acceleration of the commercial exchanges and the extension of the forms of circulation of the goods and services at community level have determined the reconsideration of the concession contract as a legal instrument for the capitalization of the public property goods, of the works and services that the state owns.The consolidation, at national level, of some legal norms meant to regulate concession and its forms was significantly influenced by the provisions of Directive 2014/23/EU of the European Parliament and of the Council of 26 February 2014 on the award of concession contracts. Thus, Law no. 100/2016 regarding the concession of works and services as well as the recent Government Emergency Ordinance no. 57/2019 on the Administrative Code implement the new European vision.

Abstract

The beginning of the twenty-first century represents the beginning of the Fourth Industrial Revolution, which, unlike its predecessors, is characterized by great digitalization, higher connections between physical things and the virtual world, the development of genetics, artificial intelligence, hyper connectivity. These characteristics have generated many changes in the way work is performed. In order to meet these challenges, employees must increase their flexibility in the way they perceive work time, wages, tasks, workspace and so on. And, in an era of technology and digitalization, employees must keep their skills and knowledge, related to new technology, up to date. Several other aspects related to employability will be discussed in this article.

Abstract

Efficient functioning in the contemporary market is a fundamental need of every organization. In times of globalization and an intensive technological and engineering progress, attaining a proper position and retaining it is a big challenge in almost every branch of industry. This is especially difficult for the SME sector, as it requires financial expenditures on system solutions and the IT base, among other things. This is where “Cloud Computing” comes in. Cloud computing services consist in providing and making available IT resources (efficient, scalable and tailored to the customer’s needs) through the Web. Thanks to wide access to intensively developing mobile systems, the low costs of computer components and the associated increasingly common use of Internet of Things (IoT) in numerous devices connected to the Internet, data processing is being gradually moved onto the Web peripheries. The purpose of the study is to highlight advantages and possible threats associated with the use of Cloud Computing-based solutions for aiding the activity of enterprises at a varying organizational level following the 4th industrial revolution.

Abstract

Volume change in expansive soils due to the intervention of water causes swell. A laboratory investigation using two different gbeosynthetic materials was designed to minimise the swell characteristics. The influence of three parameters, being geosynthetic material [Secutex (ST) and Combigrid (CG)], orientation (horizontal and vertical), and number of layers (1, 2, and 3) on the swell of an expansive soil was studied to better understand the potential for geosynthetics in swell control. The study on the immediate swell characteristics (limited to 24 hours) helps in gaining confidence in the use of geosynthetics in the swell control of expansive soils. From the investigation results, it was found that all three parameters, being type of material, orientation, and number of layers influenced the swell control of the soil. When two layers of ST and CG were placed both vertically and crossed, they reduced the swell of the virgin soil by almost 60% and 44%, respectively. It can, therefore, be concluded that geosynthetics can play an effective role in the swell control of expansive soils.

Abstract

A constant increase in the production of plastic products is a major cause of general environmental pollution. The past decade recognized how significant recycling plastic waste and the development of biodegradable materials is. This paper takes a new look at reducing the amount of plastic waste in the environment. Plastic bottles are “dressed” in a special PE (polyethylene) foil before filling. After the content is consumed, the foil is removed of the bottle. Such foil can be used for transporting other products more than once. The work focuses on the investigation of the changes in properties of the light density polyethylene (LDPE) foils caused by forming during their application to the bottle. It was decided that the optimal method for this investigation was to compare the mechanical and rheological properties PE foils before and after their application to the bottle.

Abstract

The article presents structural specifications and conceptual analysis of the test car body equipped with a hybrid power transmission system. The test car is constructed by students of the Faculty of Technical Sciences of the University of Warmia and Mazury in Olsztyn. Works dedicated to designing and construction of a car body aim at the increase of safety and improvement of aesthetics of the constructed vehicle with simultaneous maintenance of its operational and test functionality. The article presents a simplified analysis of the distribution of pressure around the body for several suggested concepts and selected technologies of production of the test car body. The paper presents results of computer simulations, of the pressure distribution and the remaining aspects of assessment of the car body functionality.

Abstract

The latest military actions carried out at global level have highlighted, besides the number, the quality and diversity of the participants in the multinational operations and the differences, not at all negligible, regarding the capabilities of these actors to participate in military actions characterized by a high technical level and technologically, but not only. One of the areas that generated a real lack of standardization, with obvious impact on the operational compatibility of the various participants was that of communications and informatics and, implicitly, of the insurmountable differences between different information subsystems as parts of the information systems of the multinational operations. From this perspective, it became evident that the performance of each participant in the military actions of a multinational character was and we consider that it will be permanently conferred by their technical ability to cope with the information avalanche and to integrate into the information system of the mission.