scholarly journals MATERIAL FLOWS IN LOGISTICS ACTIVITIES OF THE ENTERPRISE: TEORETICAL ASPECT

2020 ◽  
Vol 22 (1(74)) ◽  
pp. 140-151
Author(s):  
N. V. TRUSHKINA

Topicality. In today's economic environment, logistic activity of enterprises requires transformation of approaches to material flow management. Constant changes in the market situation require enterprises to analyze the market conditions, improve inventory management processes, introduce qualitatively new forms of work with suppliers of material resources, as well as mechanisms for selling finished products to different categories of consumers. Solving the above problems causes the need to develop a set of measures to improve the management of material flows at enterprises in order to increase the level of logistics services to consumers and reduce the cost of logistics activities as a result of lowering the costs of logistics and marketing activities. In the scientific literature on logistics, there is a variety of definitions of the term �material flow�, which is proposed by scientists from different scientific schools. Some scientists understand the material flow as a set of inventory; others � products; the third � the flow of different types of resources; fourth � the process of sequential formation and transformation in space and time of objects of labor, etc. In this connection, it became necessary to generalize and systematize theoretical approaches to the essence and content of the concept of �material flow�. Aim and tasks. The aim of this study is to substantiate the application of a comprehensive approach to the definition of the meaning of the term �material flow of the enterprise�. To achieve this goal, the following scientific tasks have been defined: to analyze, summarize and systematize existing scientific approaches to determining the essence of material flow of the enterprise; provide an author's interpretation of the concept. Methods of analysis and synthesis, critical analysis and comparison, generalization, classification, structural-logical method, system approach were used to solve the set scientific problems. Research results. Generalized various scientific views to formulate the material flow of the enterprise, which is conditionally systematized according to 10 classification features: a key category of logistics management theory; the object of logistics management; set of inventory; set of elements (resources, materials, equipment, finished goods, waste); a set of different goods moving from suppliers to consumers; production in kind; a set of inventories; flow of different types of resources; set of logistic operations, processes, links; objects of work. The feasibility of applying a comprehensive approach to the definition of the term �material flow�, which makes it possible to reflect the continuous movement of the set of necessary types of resources (material resources, production of work in progress, production and inventory, finished products, industrial waste) at the enterprise in the consistent implementation of the entire list of processes logistic activities (logistical support, storage of material resources, production of products, formation of production and commodity stocks, serve different customer categories, transportation and marketing of finished products, recycling of industrial waste). Conclusion. The novelty of the author's interpretation of the material flow is that this definition is quite complex and reflects the continuous movement of the set of necessary types of resources at an industrial enterprise with the consistent implementation of the entire list of processes of logistics activities. It is established that it will help to obtain synergetic effect by reducing the costs of organizing logistics activities, improving the quality of logistics services and the level of service of different categories of consumers, optimizing the level of inventories and increasing the level of profitability of the enterprise from the sale of finished products.

2013 ◽  
Vol 273 ◽  
pp. 97-102
Author(s):  
Wei Cao ◽  
Ping Yu Jiang ◽  
Juergen Sauser ◽  
Jochen Deuse

The purpose of this work is to develop a graphical method for describing the work-in- progress (WIP) material flow of a workpiece in order to realize RFID-driven real-time data sampling and support following-up Auto-ID computing. Firstly, various processes in a job-shop floor are formalized graphically by using different types of state-blocks, which depend on RFID detecting spaces and tag detections. And then an event set is deduced from the connecting relations among state blocks and is used for creating the event-driven graphical model in the context of the WIP material flow of a workpiece. To verify the feasibility of the proposed method, a description case is given.


2020 ◽  
pp. 225-230
Author(s):  
Stepan Karabanyk

Introduction. In organizational and technological documents the issues of transport provision with material resources of construction objects are considered without sufficient substantiation. In the article the task of supply volume planning is coordinated with the internal capabilities of the construction organization and with external conditions, and then formulated in the form of a mathematical model of linear programming. The principles of planning are defined, external and internal restrictions on the choice of the plan are formulated. The planning model developed by the author will allow to increase the organizational level of material flows management, will provide continuity and uniformity of production of works, consumption of materials, products and designs. Purpose of the article is to develop a effective model for the management of material flows in construction. Method (methodology). In the process of developing and substantiating the results of the study, the following research methods were actively used: analysis, synthesis, modeling, logical, systematic approach, methods of deduction and induction, as well as observation, measurement, comparison, experiment. Results. The main factors of ensuring the efficiency of material flow management are determined, a mathematical model of linear programming is developed, aimed at increasing the organizational level of material flow management in construction organizations.


1986 ◽  
Vol 18 (4-5) ◽  
pp. 15-26 ◽  
Author(s):  
D. A. Segar ◽  
E. Stamman

Most historical marine pollution monitoring has proven useless in a management context. A strategy for development of effective marine pollution monitoring programs is outlined. This strategy is based on the following steps: 1) systematic evaluation of the management information needs, 2) identification of the hypothetical impacts associated with those management concerns, and 3) investigation of the feasibility of monitoring those effects such that the existence, or absence, of a specified level of effects can be established in a statistically-valid manner. There are two fundamentally different types of monitoring program: site-specific and regional. These two types of program differ markedly in scope and approach when designed through application of this strategy. The strategy requires development of null hypotheses which address management concerns and which are amenable to scientific testing. In order for the program to be successful, the null hypotheses selected for inclusion in a marine pollution monitoring program must address levels of effect which are predefined to be environmentally significant. The definition of environmentally significant effect levels is a difficult process which must be primarily the responsibility of the managerial community.


2021 ◽  
Vol 13 (10) ◽  
pp. 5516
Author(s):  
Maro Vlachopoulou ◽  
Christos Ziakis ◽  
Kostas Vergidis ◽  
Michael Madas

The agribusiness sector shows tremendous growth and sustainability prospects by exploiting the challenges of “AgriFood-Tech” business models in the digital environment, by encouraging innovation, accelerating institutional and structural change, enhancing productivity, and introducing new products and services to the market. The purpose of this study is to investigate different types of “AgriFood-Tech” digital models and analyze their role in the agribusiness and AgriFood sector. Based on relevant literature research, the authors present and discuss five indicative examples of “AgriFood-Tech” models, using the Business Model Canvas (BMC) framework. The methodology included the analysis of the components of innovative AgriFood innovative business models paradigms, such as distribution channels, key partnerships, customer selection and relationships, financial viability, and value proposition. The goal was to explore their building blocks and the required decisions that create, deliver, and capture value. Our findings highlight the importance of specific features of the models, including online sharing of information between the stakeholders, online searches of agri-products, and logistics services in the agribusiness sector.


Author(s):  
Cristina Portalés ◽  
Manolo Pérez ◽  
Pablo Casanova-Salas ◽  
Jesús Gimeno

Abstract3D modelling of man-made objects is widely used in the cultural heritage sector, among others. It is relevant for its documentation, dissemination and preservation. Related to historical fabrics, weaves and weaving techniques are still mostly represented in forms of 2D graphics and textual descriptions. However, complex geometries are difficult to represent in such forms, hindering the way this legacy is transmitted to new generations. In this paper, we present the design and implementation of SILKNOW’s Virtual Loom, an interactive tool aimed to document, preserve and represent in interactive 3D forms historical weaves and weaving techniques of silk fabrics, dating from the 15th to the 19th centuries. To that end, our tool only requires an image of a historical fabric. Departing from this image, the tool automatically subtracts the design, and allows the user to apply different weaves and weaving techniques. In its current version, the tool embeds five traditional weaving techniques, 39 weaves and six types of yarns, which have been defined thanks to close collaboration of experts in computer graphics, art history and historical fabrics. Additionally, users can change the color of yarns and produce different 3D representations for a given fabric, which are interactive in real time. In this paper, we bring the details of the design and implementation of this tool, focusing on the input data, the strategy to process images, the 3D modelling of yarns, the definition of weaves and weaving techniques and the graphical user interface. In the results section, we show some examples of image analysis in order to subtract the design of historical fabrics, and then we provide 3D representations for all the considered weaving techniques, combining different types of yarns.


Insects ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 169
Author(s):  
Federico Lessio ◽  
Alberto Alma

This paper reviews the existing predictive models concerning insects and mites harmful to grapevine. A brief conceptual description is given on the definition of a model and about different types of models: deterministic vs. stochastics, continuous vs. discrete, analytical vs. computer-based, and descriptive vs. data-driven. The main biological aspects of grapevine pests covered by different types of models are phenology, population growth and dynamics, species distribution, and invasion risk. A particular emphasis is put on forecasting epidemics of plant disease agents transmitted by insects with sucking-piercing mouthparts. The most investigated species or groups are the glassy-winged sharpshooter Homalodisca vitripennis (Germar) and other vectors of Xylella fastidiosa subsp. fastidiosa, a bacterium agent of Pierce’s disease; the European grape berry moth, Lobesia botrana (Denis and Schiffermuller); and the leafhopper Scaphoideus titanus Ball, the main vector of phytoplasmas agents of Flavescence dorée. Finally, the present and future of decision-support systems (DSS) in viticulture is discussed.


1954 ◽  
Vol 4 (1-2) ◽  
pp. 84-90 ◽  
Author(s):  
G. B. Kerferd

Plato's Sophist begins with an attempt to arrive by division at a definition of a Sophist. In the course of the attempt six different descriptions are discussed and the results summarized at 231 c-e. A seventh and final account may be said to occupy the whole of the rest of the dialogue, including the long digression on negative statements. The first five divisions characterize with a considerable amount of satire different types of sophist, or more probably different aspects of the sophistic art. The sixth division (226 a–231 b) is very different. To quote Cornford's words, ‘satire is dropped. The tone is serious and sympathetic, towards the close it becomes eloquent’.


2021 ◽  
Vol 91 (8) ◽  
pp. 887-911
Author(s):  
Manuel F. Isla ◽  
Ernesto Schwarz ◽  
Gonzalo D. Veiga ◽  
Jerónimo J. Zuazo ◽  
Mariano N. Remirez

ABSTRACT The intra-parasequence scale is still relatively unexplored territory in high-resolution sequence stratigraphy. The analysis of internal genetic units of parasequences has commonly been simplified to the definition of bedsets. Such simplification is insufficient to cover the complexity involved in the building of individual parasequences. Different types of intra-parasequence units have been previously identified and characterized in successive wave-dominated shoreface–shelf parasequences in the Lower Cretaceous Pilmatué Member of the Agrio Formation in central Neuquén Basin. Sedimentary and stratigraphic attributes such as the number of intra-parasequence units, their thickness, the proportions of facies associations in the regressive interval, the lateral extent of bounding surfaces, the degree of deepening recorded across these boundaries, and the type and lateral extent of associated transgressive deposits are quantitatively analyzed in this paper. Based on the analysis of these quantified attributes, three different scales of genetic units in parasequences are identified. 1) Bedset complexes are 10–40 m thick, basin to upper-shoreface successions, bounded by 5 to 16 km-long surfaces with a degree of deepening of one to three facies belts. These stratigraphic units represent the highest hierarchy of intra-parasequence stratigraphic units, and the vertical stacking of two or three of them typically forms an individual parasequence. 2) Bedsets are 2–20 m thick, offshore to upper-shoreface successions, bounded by up to 10 km long surfaces with a degree of deepening of zero to one facies belt. Two or three bedsets stack vertically build a bedset complex. 3) Sub-bedsets are 0.5–5 m thick, offshore transition to upper-shoreface successions, bounded by 0.5 to 2 km long surfaces with a degree of deepening of zero to one facies belt. Two or three sub-bedsets commonly stack to form bedsets. The proposed methodology indicates that the combination of thickness with the proportion of facies associations in the regressive interval of stratigraphic units can be used to discriminate between bedsets and sub-bedsets, whereas for higher ranks (bedsets and bedset complexes) the degree of deepening, lateral extent of bounding surfaces, and the characteristics of associated shell-bed deposits become more effective. Finally, the results for the Pilmatué Member are compared with other ancient and Holocene examples to improve understanding of the high-frequency evolution of wave-dominated shoreface–shelf systems.


2021 ◽  
Vol 76 (1) ◽  
pp. 23-29
Author(s):  
L. Samarska ◽  
◽  
N.M. Sas ◽  

The choice of the article’s topic is conditioned by the necessity to develop happiness management (such as knowledge management, time management, etc.). With considerable attention to the definition of “happiness”, the analysis of recent publications reveals that it is crucial to understand the deep foundations of happiness, create a typology, reveal the basic principles of different types of understanding of happiness, which was chosen as the topic research. Theoretical approaches to the definition of “happiness” are chosen sociology of imagination of G. Durand, the theory of archetypes of C. Jung, and the theory of images and dreams of G. Bachelard. In the context of this system of views, the idea of happiness is the result of a free play of the imagination, which, while being on the path from past to future, is transformed, revealed, comes accurate as a result of previous collective and individual intermediate ideas, and is enriched and concretised by individual people, social groups, individuals. The mythos of happiness across nations and people differs in the way, method, and tools of individuation, the discovery of the Self. The anthropological tract of happiness has an end to its existence. It is determined by the cessation of existence, the life of nations and individuals. The desire to experience pleasure (according to Freud), the desire to rise (according to Durand) are reflexive, which determines the physiological basis of happiness. Representations of happiness determine priorities, coordinate the direction of thinking, actions, reactions to external circumstances, and choose ways to achieve happiness. This is done through the transcendental function (according to Jung) – a psychological function that arises from the connection of the content of the unconscious with the content of consciousness. Achieving happiness allows one to strengthen the subjectivity and reveal their uniqueness, which allows them to identify typological features (archetypes) of behavioural reactions of people based on individual and group ideas about happiness. The authors reveal the basic foundations of such archetypes of happiness as hedonism, eudemonia, “rat racing”, nihilism, subjective well-being.


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