scholarly journals Local System of Positioning Using a Wifi Network

2018 ◽  
Vol 155 ◽  
pp. 01014
Author(s):  
Petr Rempel ◽  
Alexey Borisov
Keyword(s):  
21St Century ◽  
Rapid Growth ◽  
Urban Areas ◽  
Local System ◽  
Wireless Access ◽  
Practical Application ◽  
System Operation ◽  
Access Points ◽  
Object System ◽  
The Given

The WiFi technology is widespread. To launch the WiFi network is very simply, thus, they meet so often. Knowledge of the location of the antennas Wi-fi is very important for internal localization (position fix of an object). System of positioning of Wi-fi (WPS) or WiPS/WFPS are used where GPS and GLONASS are unavailable because of different reasons including multipath and signal blocking indoors. Such systems include as well internal systems of positioning. Use of Wi-fi not for creation of a network, and (for example, positioning of devices on the WiFi network) is urgent for other purposes because there is a rapid growth at the beginning of the 21st century of wireless access points in urban areas. This article discusses practical application of a method of localization with use of WiFi of access points which is based on measurement of intensity of the received signal (indication of the received signal or RSSI). Here the device which executes the measurements necessary for system operation is described. Some formulas for computation of layout of the device are given. Results of system operation are considered with different layouts of access points in the given space and different environments.

scholarly journals ANALYZING SUSTAINABILITY ISSUES IN URBAN LOGISTICS IN THE CONTEXT OF GROWTH OF E-COMMERCE

2021 ◽  
Vol IV(1) ◽  
Author(s):  
Patrick Siegfried ◽  
◽  
Alex Michel ◽  
Jan Tänzler ◽  
John Jiyuan Zhang ◽  
...  
Keyword(s):  
Air Pollution ◽  
21St Century ◽  
Rapid Growth ◽  
Urban Areas

E-commerce has been keeping fast increasing worldwide since beginning of the 21st century. Rapid growth of e-commerce & parcel shipping is a booming business. However, how to handle with many hard-to-solve sustainability issues of transport in urban areas, is becoming a serious challenge for urban logistic sector and numerous stakeholders. The sustainability issues contain the problems of air pollution, congestion, and sub-contractors. This paper reported those issues in the context of growth of e-commerce and analyzed their efforts on the sustainable urban logistics development.

scholarly journals Annoyance evaluation of noise emitted by urban substation

2021 ◽  
pp. 146134842110143
Author(s):  
Li Jun ◽  
Li Li ◽  
Zhang Yongxiang ◽  
Chu Zhigang ◽  
Fan Xiaopeng
Keyword(s):  
Regression Model ◽  
Urban Areas ◽  
Subjective Evaluation ◽  
Noise Pollution ◽  
Objective Evaluation ◽  
Semantic Differential ◽  
Differential Method ◽  
Practical Application ◽  
Noise Evaluation ◽  
Objective And Subjective Evaluation

In China, noise pollution from substations in urban areas is becoming more and more serious. An annoyance evaluation of the noise emitted by urban substations is presented. First, the subjective evaluation is conducted on the noise samples from urban substations via the semantic differential method. Subsequently, according to the typical characteristics of urban substation noise, 14 acoustical metrics are used to describe the noise samples for objective evaluation. Then the correlation analysis and regression analysis between the objective and subjective evaluation results are carried out. Finally, a regression model for urban substation noise evaluation is established. Practical application shows that the regression model can correctly predict the subjective annoyance of urban substation noise.

Operable walls: where the rubber meets the mullion

2021 ◽  
Vol 263 (1) ◽  
pp. 5000-5011
Author(s):  
Brandon Cudequest
Keyword(s):  
Safety Net ◽  
Product Performance ◽  
System Operation ◽  
Architectural Styles ◽  
General Goals ◽  
The Given

The architecture that surrounds an operable wall often determines its acoustical success. There are standard guides for detailing operable walls; however, these offer a rigid take on design aesthetics. Abstracting these principles into general goals, the designer can accommodate a variety of architectural styles. The surrounding construction should act as a safety net by providing labyrinths when seals fail or by blocking problematic flanking paths. The architecture should also ease system operation allowing users to deploy the operable wall with minimal fail rate. This paper compares several off-the-shelf and custom systems, highlighting the importance of construction details and coordination and their impact on the installed product performance. The architecture can only support these systems to a degree and the designer should select an operable system that works within the given conditions. By comparing design trends in operable walls from an acoustical consultant standpoint, this paper will spotlight architecturally harmonious systems as well as several system features to be aware of when evaluating options.

scholarly journals Ensuring Sustainable Urban Transformation in Indonesia

2020 ◽  
Vol 1 (2) ◽  
pp. 217-224
Author(s):  
B. Setiawan ◽  
Tri Mulyani Sunarharum
Keyword(s):  
Developing Countries ◽  
21St Century ◽  
Urban Areas ◽  
Urban Population ◽  
Third World ◽  
Developed Countries ◽  
Urban Transformation ◽  
The Third ◽  
The Many ◽  
The Third World

Of the many important events that occurred in the two decades of the 21st century, the process of accelerating urbanization—especially in third-world countries—became something quite phenomenal. It's never even happened before. In the early 2000s, only about 45 percent of the population in the third world lived in urban areas, by 2020 the number had reached about 55 percent. Between now and 2035 the percentage of the population living in urban areas will reach about 85 percent in developed countries. Meanwhile, in developing countries will reach about 65 percent. By 2035, it is also projected that about 80 percent of the world's urban population will live in developing countries' cities.

scholarly journals Looking East Again? Malaysia-Japan Relations in the 21st Century

2017 ◽  
Author(s):  
YEW MENG LAI
Keyword(s):  
Cold War ◽  
21St Century ◽  
Strategic Partnership ◽  
Diplomatic Relations ◽  
Historical Overview ◽  
Bilateral Relationship ◽  
The Cold War ◽  
National Economies ◽  
Strategic Thought ◽  
The Given

This article analyses the trends and developments in Malaysia-Japan relations since its inception in 1957. It begins with a brief historical overview of their bilateral interactions, followed by a scrutiny of the developments and shifting trends, from the early decade of the establishment of official diplomatic relations between independent Malaya and Japan that coincided with the Cold War to the introduction of Malaysia’s Look East Policy (LEP) in the early 1980’s that saw Malaysia-Japan ties taking-off to new and unprecedented heights. In doing so, the article reveals the major impetuses/drivers of their ‘special relationship’, which among others include complementarities in their national economies, perceived sociocultural affinities underpinned by the so-called ‘Asian values’ and idiosyncrasies of key leaders like Mahathir Mohamad, as well as the given regional strategic environment, which contributed to a congruence of strategic thought and mutual interests between the major actors from both countries that led to Malaysia’s admirable relations with Japan before the turn of the 21st century. This article also assesses the contemporary trends in and prospects for their bilateral ties, by identifying the changing dynamics that have brought a qualitative shift in the Malaysia-Japan bilateral relationship which is moving towards strategic partnership and beyond.

scholarly journals COMPARISON OF BASIC MAINTENANCE CONCEPTS USING WITNESS

2021 ◽  
Vol 2021 (6) ◽  
pp. 5435-5440
Author(s):  
VLADIMIRA SCHINDLEROVA ◽  
◽  
IVANA SAJDLEROVA ◽  
Keyword(s):  
21St Century ◽  
Simulation Software ◽  
Predictive Maintenance ◽  
Maintenance Management ◽  
Practical Application ◽  
Manufactured Products ◽  
The Right ◽  
Positive Effect ◽  
Production Facilities

Maintenance is a complex, extensive and important issue in terms of its impact on the quality of manufactured products or services provided in all areas of industry. The importance of predictive maintenance for the industry in the 21st century is crucial. However, the right approach to maintenance management is often underestimated in many companies today, although it can have a very positive effect on the company’s efficiency. Using the example of a practical application, the paper includes a comparison of three main maintenance concepts – classical (reactive), planned, predictive through the simulation software Witness. Maintenance concepts are compared in terms of their ability to solve and eliminate failures that occur in production facilities during operation.

scholarly journals The Problem of Fundamentalism in Foreign Orthodoxy: the Review

2019 ◽  
pp. 23-35
Author(s):  
Anna M. Yakovleva ◽  
◽  
Alexey V. Volobuev ◽  
Keyword(s):  
Public Sphere ◽  
21St Century ◽  
The Public ◽  
Mass Consciousness ◽  
Conservative Beliefs ◽  
The Public Sphere ◽  
Definition Of ◽  
The Given ◽  
Modern Era ◽  
The Church

. The review deals with the problem of Orthodox fundamentalism in the discussion of Englishspeaking authors of different denominations, representatives of canonical and non-canonical Orthodox churches, which took place in theological discussions, in journalism and at scientific conferences mainly in recent years. The main materials are first introduced into the scientific circulation in Russian. The concepts of fundamentalism in Orthodoxy in the foreign press are presented; the definitions of Orthodox fundamentalism, the main theses of opponents and their argumentation are given. Frequently, the word “fundamentalism” in relation to Orthodoxy is used as a banal nickname for those opponents who have traditional or conservative beliefs, are prone to “ritualism”, shows intolerance and lack of readiness for dialogue, including ecumenical. However, since the beginning of the 21st century, theologians, priests and scholars have been trying to give a stricter definition of such fundamentalism as a phenomenon of the modern era, especially in its demise. It is primarily about the attitude to the works of the holy fathers of the Church. It is expressed, in particular, the opinion that the veneration of patristic writings, along with the resolutions of the Councils (which constitutes the Holy Tradition) should be revised. However, the concept of “Orthodox fundamentalism”, as follows from the given review, has not yet been formed. But one can speak of such signs of it, connected, in particular, with a wide exit to the public sphere of mass consciousness, as the striving to minimize theological provisions, absolutization of some provisions of dogma to the detriment of others, and the logos (modern) reading of the myth.

Sign in / Sign up

Export Citation Format

Share Document