scholarly journals Reduction of a model for sodium exchanges in kidney nephron

2021 ◽  
Vol 0 (0) ◽  
pp. 0
Author(s):  
Marta Marulli ◽  
Vuk Miliši$\grave{\rm{c}}$ ◽  
Nicolas Vauchelet
Keyword(s):  
Mathematical Analysis ◽  
Boundary Data ◽  
Point Of View ◽  
Asymptotic Result ◽  
Ionic Exchange ◽  
Surrounding Environment ◽  
Initial Layers ◽  
Epithelial Layers ◽  
Counter Current ◽  
Linear Hyperbolic System

<p style='text-indent:20px;'>This work deals with a mathematical analysis of sodium's transport in a tubular architecture of a kidney nephron. The nephron is modelled by two counter-current tubules. Ionic exchange occurs at the interface between the tubules and the epithelium and between the epithelium and the surrounding environment (interstitium). From a mathematical point of view, this model consists of a 5<inline-formula><tex-math id="M1">\begin{document}$ \times $\end{document}</tex-math></inline-formula>5 semi-linear hyperbolic system. In literature similar models neglect the epithelial layers. In this paper, we show rigorously that such models may be obtained by assuming that the permeabilities between lumen and epithelium are large. We show that when these permeabilities grow, solutions of the 5<inline-formula><tex-math id="M2">\begin{document}$ \times $\end{document}</tex-math></inline-formula>5 system converge to those of a reduced 3<inline-formula><tex-math id="M3">\begin{document}$ \times $\end{document}</tex-math></inline-formula>3 system without epithelial layers. The problem is defined on a bounded spacial domain with initial and boundary data. In order to show convergence, we use <inline-formula><tex-math id="M4">\begin{document}$ {{{\rm{BV}}}} $\end{document}</tex-math></inline-formula> compactness, which leads to introduce initial layers and to handle carefully the presence of lateral boundaries. We then discretize both 5<inline-formula><tex-math id="M5">\begin{document}$ \times $\end{document}</tex-math></inline-formula>5 and 3<inline-formula><tex-math id="M6">\begin{document}$ \times $\end{document}</tex-math></inline-formula>3 systems, and show numerically the same asymptotic result, for a fixed meshsize.</p>

scholarly journals URBAN TERRITORIAL COMMMUNITIES AND THEIR INFLUENCE FORMING URBAN RECREATIONAL TERRITORIES / MIESTO TERITORINIŲ BENDRUOMENIŲ ĮTAKA REKREACINIŲ TERITORIJŲ FORMAVIMUI

2011 ◽  
Vol 3 (3) ◽  
pp. 30-37 ◽  
Author(s):  
Inga Urbonaitė
Keyword(s):  
Social Relations ◽  
Point Of View ◽  
Urban Structure ◽  
Surrounding Environment ◽  
Green Areas

Town green areas are very important elements of urban structure, it is used for leisure, recreation, buidling social relations. Their importance is measured not only from ecological point of view, but also from estetical and economical. It is important to understand, not only how recreation system influeces the surrounding environment, but also what should it be to meet urban territorial communities needs.

On the Development of Mathematical Analysis and its Relations to Some other Sciences

1905 ◽  
Vol 3 (52) ◽  
pp. 193-201
Keyword(s):  
Mathematical Analysis ◽  
Point Of View ◽  
Rapid Review

One of the objects of a Congress such as this is to exhibit the connecting links of the different departments of Science, taking that term in its widest acceptation. Hence the organisers of this meeting have taken care that the relations between the different sections shall be exhibited in broad relief. In undertaking a sketch of this kind, which must necessarily be somewhat indefinite in character, we must forget that all is in all; as far as algebra and analysis are concerned, the follower of Pythagoras would be disconcerted by the extent of his task, remembering the celebrated formula of the School: “Things are numbers.” From this point of view my subject would be in-exhaustible. But I shall make no such pretensions, and for the best of reasons. By passing in rapid review the development of our science throughout the ages, and particularly in the last century, I hope to be able to give an adequate indication of the part played by mathematical analysis in its relations to other sciences.

scholarly journals Problems Of Improving The Effectiveness Of Applied Sociological Research

2021 ◽  
Vol 03 (04) ◽  
pp. 201-209
Author(s):  
Farogat Bakhtiyorovna Fayzieva ◽  
Keyword(s):  
Mathematical Analysis ◽  
Scientific Method ◽  
Scientific Activity ◽  
Point Of View ◽  
Sociological Research ◽  
Applied Sociology ◽  
Sociological Analysis ◽  
Social Effectiveness ◽  
Practical Point ◽  
The Social

The article analyzes the problems of improving the effectiveness of applied sociological research. The scientific method that helps to ensure objectivity and consistency in the study of a social problem is considered. The directions, forms and prospects for the development and improvement of the effectiveness of applied sociology from a practical point of view are given.Intelligence research is the simplest type of applied sociological analysis. It solves problems that are very limited in their content, covers, as a rule, small study populations, and is based on a simplified program and concise methodological tools, which in applied sociology is understood as a package of documents specially developed for each study designed to collect primary sociological information, such as: an interview form, a mass or expert questionnaire, a card for recording the results of observation, studying documents; further: sampling projects, mathematical analysis of primary information, etc.A methodology for evaluating the social effectiveness of applied sociological research applied to any written results of scientific activity is proposed.

scholarly journals Waste disposal facilities monitoring based on high-resolution information features of space images

2020 ◽  
Vol 157 ◽  
pp. 02029
Author(s):  
Maretta Kazaryan ◽  
Arsen Simonyan ◽  
Simon Simavoryan ◽  
Elena Ulitina ◽  
Rafik Aramyan
Keyword(s):  
High Resolution ◽  
Waste Disposal ◽  
Mathematical Analysis ◽  
Stochastic Geometry ◽  
Point Of View ◽  
Tikhonov Regularization Method ◽  
Space Images ◽  
Discrete Orthogonal ◽  
Attribute Space ◽  
Selection Of

In the article there is represented and solved the problem of space images recognition for the presence of solid household and industrial waste without binarization. The methods of stochastic geometry and mathematical analysis are used. In the work there is proposed an algorithm based on a trace transformation using discrete orthogonal transformations (DOT) to minimize the attribute space and carry out studies on correctness by Tikhonov. For the implementation of the algorithm there are used elements of mathematical analysis, wavelet analysis, functional analysis, theory of discrete orthogonal transformations, methods for deciphering space images in the problem of stochastic scanning of space images based on the formation of a triplet attribute with minimization of attribute space using DOT. The development a trace matrices and the selection of informative features by stochastic geometry to find WDF from high-resolution space images are investigated from the point of view of DOT apparatus application. A study of the sustainability task was also performed. The proposed technique was tested using the example of space photographs with a WDF image. Conclusions are drawn on the use of the method proposed in this article for the task of automatic computer generation and selection of informative features for determining waste disposal facilities from high-resolution space images. It is proposed to use the Tikhonov regularization method to introduce stability in this task.

Beyond the Albanian–Slav Divide: Political Cooperation and National Identities in the Balkans at the Turn of the Twentieth Century

2019 ◽  
Vol 34 (1) ◽  
pp. 25-47
Author(s):  
Fabio Bego
Keyword(s):  
Twentieth Century ◽  
Political Activism ◽  
Point Of View ◽  
National Identities ◽  
The Balkans ◽  
Surrounding Environment ◽  
Recent Scholarship ◽  
Political Cooperation ◽  
The Impact

This article investigates how some prominent and less known Albanian activists perceived their Southern Slav neighbors at the turn of the twentieth century. The research explores the way in which the spread of nationalism conditioned the positioning of Albanians and Slavs in the process of identity construction and how such identities mirrored their reciprocal political claims. Recent scholarship has often emphasized that the affirmation of national ideas led to the fragmentation of Balkan communities by turning Albanian-speaking populations and their Slavic-speaking neighbors into “others.” My analysis expands this assertion by elaborating a theoretical approach that allows us to explore the impact of nationalism on the post-1878 Balkan context from a more dynamic point of view. National discourses did not only lay the foundation for a differentiation between the Balkan communities, but were also tools for promoting joint political activism. National activists often felt it necessary to cooperate in order to deal with the challenges posed by the surrounding environment, which was common to both Albanians and Slavs. Various contingent circumstances led Albanian activists to project long-term forms of coexistence with their neighbors, and to imagine forms of political, cultural, and social synthesis with the Slavs.

scholarly journals Aplikasi Syariat Dalam Bisnis

2018 ◽  
Vol 25 (1) ◽  
pp. 56
Author(s):  
Hedher Tuakia
Keyword(s):  
Social Interaction ◽  
Economic System ◽  
Transition Point ◽  
Human Mind ◽  
Point Of View ◽  
Business System ◽  
Surrounding Environment ◽  
Material Benefits ◽  
Sense Of Satisfaction

Today there is a transition point of view to the conception of business / business. Some businesspeople no longer rely solely on the economic system adopted by capitalism (conventional) but also begin to direct their point of view on the economic / business system that can give satisfaction to the spiritual aspects or the satisfaction of the human mind. The traders in running their business do not merely get the highest material benefits, but they also want to get satisfaction. This is indicated by the adamnya sense of satisfaction if ternayata in running the business can be beneficial to the surrounding environment and for the purposes of social interaction. be friendly and tolerant to others and want to establish brotherhood among fellow traders and the surrounding community. That the motive or intention of the merchants in his business is to seek the blessing or pleasure of Allah SWT. Not just to maximize profits, as adopted by the conventional economic system. They practice what Rasulullah SAW has exemplified in his business by always being honest, trustful and tolerant.

scholarly journals Examination of Selected Upper Shoe Materials Based on Bamboo Fabrics

2019 ◽  
Vol 27 (6(138)) ◽  
pp. 85-90 ◽  
Author(s):  
Katarzyna Ławińska ◽  
Wioleta Serweta ◽  
Izabela Jaruga ◽  
Nataliia Popovych
Keyword(s):  
Polyurethane Foam ◽  
Outer Layer ◽  
Point Of View ◽  
Textile Materials ◽  
Surrounding Environment ◽  
Medium Layer ◽  
Water Vapour Absorption ◽  
New Material ◽  
Standard Composition ◽  
Good Possibility

In this paper the authors describe the creation of new material packages based on bamboo textile materials for upper shoe material. These packages were made up of three layers: an inner layer in the foot skin neighbourhood, outer layer – which contacted with the surrounding environment, and a medium layer – polyurethane foam of a thickness of 2 mm. Experimetal tests consisted in the measurement of hygienic parameters (water vapour absorption and permeability) and some mechanical indicators important from the user’s point of view, like the elongation property and maximum force at break. The packages based on bamboo materials were compared with a standard composition: cotton – polyurethane foam – cotton. The results obtained showed, that in a lot of cases, the use of bamboo materials as lining or an outer layer is a good possibility to improve the hygienic and mechanical properties of newly formed material compositions.

scholarly journals The ecological role of Accipitridae vultures in terrestrial landscapes of Azerbaijan

2020 ◽  
Vol 10 (1) ◽  
pp. 90-94
Author(s):  
T. Karimov ◽  
A. Matsyura
Keyword(s):  
Total Population ◽  
Point Of View ◽  
Wild Animals ◽  
Wild Mammals ◽  
Source Of Infection ◽  
Surrounding Environment ◽  
Difficult Terrain ◽  
High Level ◽  
Sanitary Conditions

Scavengers can provide ecosystem services to people by removal of dead animals that could become sources of disease. From such point of view, it seems appropriate to evaluate these benefits in Azerbaijan in quantitative terms. To this end, in 2013, an extensive monitoring was organized in the Turyanchay Reserve, which covers six regions and neighboring territories (the total population here is 640 thousand people). A high level of animal mortality in the Turyanchay Reserve is supported by the concentration of 24 species of wild mammals and 700 thousand domestic animals in the surrounding environment. The difficult terrain area is another factor leading to the death of animals. Animals grazing on hillsides often break down and die. The bodies of domestic and wild animals killed by wolves also often remain lying on this territory. In addition, vehicles traveling along the Agdash-Gabala highway cause the death of many domestic and wild animals. During the two months of the study (from June to July), 62 dead animals were found. Ten kinds of diseases were identified in 38 undecomposed bodies of these animals. Scavengers eat animal bodies in one-three days (without bones), preventing them from becoming a source of infection. The role of necrophages in minimizing of epizootic cases and improving sanitary conditions is important for ecosystems, because the blood of most animals is a carrier of diseases and most of the parasites present in it are common to both humans and animals. Scavengers can be used by veterinary organizations as indicators to simplify the identification of animal bodies and the subsequent disposal of their remains.

scholarly journals Kajian Tatanan Bentuk Arsitektur Simbolis Pada Pengembangan Museum Trinil Di Kabupaten Ngawi

2021 ◽  
Vol 2 (1) ◽  
pp. 79-86
Author(s):  
Rizal Denariyan Sudibyo ◽  
Ika Ratniarsih ◽  
Sigit Hadi Laksono
Keyword(s):  
Case Studies ◽  
Point Of View ◽  
Development Plan ◽  
Facilities Management ◽  
Ancient History ◽  
Land Area ◽  
The Public ◽  
Design Object ◽  
Surrounding Environment ◽  
Descriptive Method

Abstrak. Ngawi Regency is a place of ancient sites whose existence is less known by the public. Due to the lack of supporting facilities for the Trinil Museum which holds a lot of ancient history. The development at the Trinil Museum is needed to make the museum run optimally and become a big icon for Ngawi Regency. The method used to compile this report is the descriptive method in which there are literary case studies and field case studies by comparing and making references to the development plan. The location of the Trinil Museum which will be developed is in Kawu Village, Kec. Kedunggalar, Ngawi Regency, East Java. The land area on the site reaches ± 15,000 m2 (1.5 hectares), borders with Bengawan Solo, forest and community settlements in Kawu Village. Facilities that will be added to the design object are Main Facilities: Exhibition and Education Building Facilities, Entertainment Facilities, Archeological Facilities, Supporting Facilities: Management Building Facilities, Restaurant and Cafe Facilities, Meeting Facilities, Lodging Facilities, Outbound Facilities, Service Facilities (Toilets, EEC, Warehouse, Loading Dock, Drop Off). The theme used for this design is symbolic, symbolic here uses a disguised metaphor where the manifestation is disguised so that people who see the object think and have their own point of view, where the process is by adapting / integrating with the surrounding environment and taking different forms. characterizes the Ngawi area with an emphasis on ancient accents. The application of the theme to the land arrangement is a form of circulation such as bones, the application of the theme to the shape is on the roof using the roof found in the area with the addition of ancient shapes and textures such as stones and bones, the application of the theme to the space is the emphasis of stone accents and the color of stone and wood. The benefit of designing this object is to make the Trinil Museum run even more optimally, to provide a forum for research and people who want to study archeology and to make it a great icon for Ngawi Regency.Keywords: Museum, Ngawi, Development, Symbolic, Trinil Abstrak. Kabupaten Ngawi adalah tempat situs purba yang keberadaannya kurang diketahui oleh khalayak ramai. Dikarenakan kurangnya fasilitas penunjang terhadap Museum Trinil yang menyimpan banyak ilmu sejarah purbakala. Pengembangan di Museum Trinil diperlukan guna menjadikan museum tersebut berjalan secara maksimal dan menjadi suatu ikon yang besar untuk Kabupaten Ngawi. Metode yang di gunakan untuk menyusun laporan ini adalah Metode Deskriptif dimana dalam metode tersebut terdapat Studi Kasus Literatur dan Studi Kasus Lapangan dengan membandingkan dan menjadikan referensi untuk rencana pengembangan tersebut. Lokasi Museum Trinil yang akan dikembangkan berada di Desa Kawu, Kec. Kedunggalar, Kabupaten Ngawi, Jawa Timur. Luas Lahan pada tapak mencapai  ±15.000 m2 (1,5 Hektar), Berbatasan dengan Bengawan Solo, Hutan dan pemukiman warga Desa Kawu. Fasilitas yang akan ditambahkan pada objek rancangan tersebut yaitu Fasilitas Utama : Fasilitas Gedung Pameran dan Edukasi,  Fasilitas Hiburan, Fasilitas Arkeologi, Fasilitas Penunjang : Fasilitas Gedung Pengelola, Fasilitas Restoran dan Kafe, Fasilitas Pertemuan, Fasilitas Penginapan, Fasilitas Outbond, Fasilitas Servis (Toilet, MEE,Gudang,Loading Dock, Drop Off). Tema yang digunakan untuk rancangan ini adalah simbolis, simbolis disini menggunakan metafora tersamar dimana perwujudannya dengan cara disamarkan agar orang yang melihat obyek tersebut berfikir dan memiliki sudut pandang masing-masing, dimana prosesnya dengan cara adapatasi/ menyatu dengan lingkungan sekitar dan mengambil bentuk-bentuk yang menjadi ciri khas daerah Ngawi dengan penekanan aksen purbakala. Penerapan tema pada tatanana lahan adalah bentuk sirkulasi seperti tulang, penerapan tema pada bentuk adalah pada atap menggunakan atap yang terdapat pada daerah tersebut dengan ditambah bentuk dan tekstur purba seperti bebatuan dan tulang, penerapan tema pada ruang adalah penekanan aksen bebatuan dan warna batu dan kayu. Manfaat dari perancangan objek ini yaitu agar Museum Trinil berjalan lebih maksimal lagi, memberikan wadah untuk penelitian dan orang yang ingin belajar ilmu kepurbaan dan menjadikan suatu ikon yang besar untuk Kabupaten Ngawi.Kata kunci: Museum, Ngawi, Pengembangan, Simbolis, Trinil

scholarly journals Kajian Teori Breaking Bad Habit Sebagai Solusi Memutus Kebiasaan NegatifSiswa Dalam Pembelajaran

2020 ◽  
Vol 6 (2) ◽  
pp. 191-208
Author(s):  
Teguh Hadi Wibowo
Keyword(s):  
Family Members ◽  
Point Of View ◽  
Good Friend ◽  
Threshold Method ◽  
Breaking Bad ◽  
Surrounding Environment ◽  
Incompatible Response ◽  
Teaching Point ◽  
Response Method

Abstract:This article was an assessment of breaking badhabits theory offered by E.R. Guthrie by providing reinforcement from an Islamic teaching point of view so that it could be used as a solution to break bad habits of students in a lesson. There are three methods offered by E.R. Guthrie in breaking bad habits: First, the threshold method. This method is in accordance with the four stages of break the habit of drinking khamrfound in Qur'an. Second, the fatigue method. This method is in accordance with the command to be patient in telling family members to pray as stated in Thāhā verse 132. Third, the incompatible response method. This method is in accordance with Islamic views, one of which is found in surah al-Burûj verses 10-11. In addition to the above three methods, in the view of Islam, there areelementsin a lesson that are no less important, namely the environmental elements, that good or bad the character of an individual canbe formed by the surrounding environment, as implied in the hadith of the Prophet Mohamed about the parable of a good friend such as musk oil traders and bad friends such as the blacksmith's fire blower.

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