scholarly journals Problems concerning reconstruction of old postindustrial building of a closed coal mine and its adaptation to a new utility function

2018 ◽  
Vol 174 ◽  
pp. 03021 ◽  
Author(s):  
Jacek Hulimka ◽  
Jan Kubica ◽  
Marta Kałuża
Keyword(s):  
Utility Function ◽  
Coal Mine ◽  
Technical Condition ◽  
Building Structure ◽  
Waiting Room ◽  
Industrial Facilities ◽  
Utility Values ◽  
History Of ◽  
Observed Damage

The waiting room and bath building is one of the two preserved industrial facilities of the former Gliwice Mine. It was built in the first years of the 20thcentury and fulfilled its function till mine liquidation in 2000. It was overhauled and modernized in 2005-2008 and currently fulfills a new function. The paper presents a summarized history of the Gliwice Mine, a detailed description of the building structure, its technical condition before the overhaul and problems encountered during the adaptation works. It also briefly indicates the causes of the observed damage as well as describes the scope of the basic modernization works related to the new function of the building as an education and office facility. Moreover, it presents the manner of conducting the overhaul and modernization works leading to restoration of the full utility values in the new function.

scholarly journals Problems encountered when assessing the technical condition of some types of industrial structures on the example of coal bunkers for a power boiler

2019 ◽  
Vol 284 ◽  
pp. 09003
Author(s):  
Jan Kubica ◽  
Marta Kałuża
Keyword(s):  
Coal Mine ◽  
Storage Tank ◽  
Power Plants ◽  
Industrial Structure ◽  
Technical Condition ◽  
Industrial Facilities ◽  
Industrial Structures ◽  
Fine Coal ◽  
Power Boiler ◽  
Energy Plants

The assessment of the technical condition of the structure in industrial facilities is sometimes very difficult, even for experienced construction specialists. First, this applies to facilities in which there are quite specific cubature constructions, as objects located in the coal mine facility, or coal-fired CHP plants. In the case of energy plants, such a typical construction that causes the most problems when assessing the technical condition is coal or fine coal storage tank usually in the form of bunker batteries supplying power boilers. In practice, access to the interior of such bunkers is possible only when the power unit is put out of service (boiler extinguish) in order to repair, upgrade or expand it. In presented paper on the example of two coal bunkers (from a battery consisting of four such constructions) of one of the power plants located in southern Poland, the authors want to present and discuss some specific problems that occurred in the assessment and analysis of the technical condition of this type of specific industrial structure.

“...LOCOMOTIVES WILL FREEZE, FAMINE IS COMING, AND THERE ARE CASES OF TYPHUS...”. RAILWAYS OF THE GREAT SIBERIAN CAMPAIGN 1919–1920

2021 ◽  
pp. 121-138
Author(s):  
Vasily Zh. Tsvetkov ◽  
Keyword(s):  
Civil War ◽  
Technical Condition ◽  
The State ◽  
Rolling Stock ◽  
Documentary Evidence ◽  
Eastern Front ◽  
History Of ◽  
The Russian Federation ◽  
State Archives ◽  
The Military

The publication of documentary materials reflects the history of the organization and conducting of the retreat of the units of Admiral A.V. Kolchak’s Eastern Front and the evacuation of civilian refugees from Omsk and other cities in Siberia in November 1919 – January 1920. The article considers the issues of the technical condition and operation of the TRANSSiberian railway and, in particular, the functioning of the rolling stock. Those aspects for the history of the Civil War in the East of Russia to this day remain poorly studied. Evidence is provided on the state of the military, refugee and civil trains, and about the situation of passengers. Consistently and with the involvement of documentary material, the stages of the preparation and implementation of evacuation measures are described, and the reasons for the failure of planned decisions are analyzed. The article presents evidence on the consequences of full-scale disaster with the railway accident that became part of the Civil War history in Siberia. The materials from the State Archives of the Russian Federation that have not been widely used in scientific research and have not been published yet, as well as some previously published documentary evidence, were used. The study of that aspect of the Civil War history in Siberia allows to get an idea of not only the military, but also of the political importance that the TRANS-Siberian railway played in the absence of developed transport communications in the East of Russia.

scholarly journals Strengthening of a steel girder with web openings

2019 ◽  
Vol 284 ◽  
pp. 09010
Author(s):  
Andrzej Wojnar ◽  
Edyta Bernatowska
Keyword(s):  
Static Analysis ◽  
Basic Structure ◽  
Technical Condition ◽  
Building Structure ◽  
Limit States ◽  
Steel Girder ◽  
Cultural Center ◽  
Web Openings ◽  
Roof Structure ◽  
The City

The paper presents results of investigation carried out on structure of the cultural center building in Dębica in Poland. Technical condition of mentioned building after 40 years of exploitation did not allow for its further use. In order to check the reliability of the structure, the authorities of the city commissioned an expertise. This study included basic structure measurements, loads statement and static analysis as well as check of limit states. As a result of the conducted analyses, it was found that the roof structure made of steel girder with web openings did not comply with resistant conditions. The paper presents brief description of building structure, numerical analyses and proposals of strengthening the roof girder.

scholarly journals Evaluating Sensitivity of the Ranking of Forest Fuel Treatments to Manager’s Risk Attitudes and the Importance of Treatment Objectives, Montana, USA

2019 ◽  
Vol 2019 ◽  
pp. 1-12
Author(s):  
Tony Prato ◽  
Travis Paveglio
Keyword(s):  
Conceptual Framework ◽  
Utility Function ◽  
Risk Attitudes ◽  
Risk Averse ◽  
Fuel Treatment ◽  
Utility Values ◽  
Forest Fuel ◽  
Importance Ratings ◽  
Forested Areas

This study develops a conceptual framework for evaluating the sensitivity of the ranking of forest fuel treatment strategies (FTSs) to variation in managers’ risk attitudes and the importance ratings managers assign to fuel treatment objectives and demonstrates the application of the framework using a case study. The conceptual framework involves (1) defining a utility function on an index that is a weighted average of fuel treatment objectives and incorporates a manager’s risk attitude; (2) using the utility function to calculate utility values for FTSs; (3) applying the stochastic efficiency with respect to a function method to utility values to obtain certainty equivalents (CEs); and (4) ranking FTSs based on statistically significant differences in median CEs for pairs of FTSs. The case study involves three (federal, state, and private) forested areas in Flathead County, Montana, USA, three FTSs (i.e., Community Wildfire Protection Plan (CWPP) Priority; CWPP & Wildland-Urban Interface Priority; and No Priority), three treatment objectives (i.e., minimizing expected residential monetary losses from wildfire, minimizing expected deviation of forest ecological conditions from their historic range and variability, and maximizing expected net returns from timber harvesting associated with fuel treatment), two risk attitudes (i.e., almost risk neutral and highly risk averse), and 35 weight scenarios for treatment objectives. Case study results are used to test the hypothesis that the ranking of FTSs is sensitive to manager’s risk attitudes and the importance ratings for management objectives. The ranking of FTSs for the three forested areas was insensitive for an almost risk neutral manager and sensitive for a highly risk averse manager. In general, the case study indicates that the ranking of FTSs is sensitive to both a forest manager’s risk attitudes and the importance ratings assigned to fuel treatment objectives.

The Differences between the Architectural Characters from the Perspective of Immigration Culture - Take the Fenghuang Ancient Street as an Example

2013 ◽  
Vol 357-360 ◽  
pp. 368-371
Author(s):  
Rui Bai ◽  
Jun Feng Yin
Keyword(s):  
Comparative Analysis ◽  
Building Structure ◽  
Immigration History ◽  
Building Process ◽  
Long Time ◽  
History Of ◽  
Different Cultures

Different geographical environments and different cultures decide the diversity in the architectural building process. In the history of Shanxi Zhashui Fenghuang town, the history of immigration occupies a long time. This paper first introduces the unique immigration history of Fenghuang town. Under this background, we take two typical residences as example to do a comparative analysis of the architectural characters, which are presented between them and typical local-style dwelling houses of origin areas. We do these analyses from the plane layout, architecture function, elevation, adornment, and building structure aspects. Through these analyses, we try to find out these residences of generality and particularity in the process of formation.

scholarly journals Patient use of blood pressure self-screening facilities in general practice waiting rooms: a qualitative study in the UK

2017 ◽  
Vol 67 (660) ◽  
pp. e467-e473 ◽  
Author(s):  
Alice C Tompson ◽  
Sabrina Grant ◽  
Sheila M Greenfield ◽  
Richard J McManus ◽  
Susannah Fleming ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Qualitative Study ◽  
Ease Of Use ◽  
Structured Interviews ◽  
Waiting Room ◽  
Cross Sectional ◽  
History Of ◽  
The Uk ◽  
Patient Use ◽  
At Home

BackgroundBlood pressure (BP) self-screening, whereby members of the public have access to BP monitoring equipment outside of healthcare consultations, may increase the detection and treatment of hypertension. Currently in the UK such opportunities are largely confined to GP waiting rooms.AimTo investigate the reasons why people do or do not use BP self-screening facilities.Design and settingA cross-sectional, qualitative study in Oxfordshire, UK.MethodSemi-structured interviews with members of the general public recruited using posters in GP surgeries and community locations were recorded, transcribed, and coded thematically.ResultsOf the 30 interviewees, 20% were hypertensive and almost half had self-screened. Those with no history of elevated readings had limited concern over their BP: self-screening filled the time waiting for their appointment or was done to help their doctor. Patients with hypertension self-screened to avoid the feelings they associated with ‘white coat syndrome’ and to introduce more control into the measurement process. Barriers to self-screening included a lack of awareness, uncertainty about technique, and worries over measuring BP in a public place. An unanticipated finding was that several interviewees preferred monitoring their BP in the waiting room than at home.ConclusionBP self-screening appeared acceptable to service users. Further promotion and education could increase awareness among non-users of the need for BP screening, the existence of self-screening facilities, and its ease of use. Waiting room monitors could provide an alternative for patients with hypertension who are unwilling or unable to monitor at home.

scholarly journals Features of Fortifications of the Tsaritsyn Defense Line in the 20s of the 18th Century

2021 ◽  
Vol 26 (1) ◽  
pp. 41-52
Author(s):  
Sergey Ivanyuk ◽  
Keyword(s):  
Systematic Approach ◽  
18Th Century ◽  
Time Frame ◽  
Technical Condition ◽  
Research Papers ◽  
Don River ◽  
History Of ◽  
Operation Results ◽  
Military Engineering ◽  
Academy Of Sciences

Introduction. Extending from the walls of the fortress of Tsaritsyn to the Don river, the Tsaritsyn defense line reliably protected this area from the systematic raids of nomads, gave an impetus to the active settlement of the region and its economic development. A number of research papers are devoted to the history of the Tsaritsyn line, but some aspects are still insufficiently studied. This article reveals the features of fortification and military engineering characteristics of the Tsaritsyn defense line defensive structures, its technical condition during the reign of Peter I. Methods and materials. The research is based on both published documents and ones stored in archives, which allow us to understand the principles that formed the fortified Tsaritsyn defense line, which fortifications were part of its complex in the 20s of the 18th century. Methods of the study: the principles of historicism and objectivity, analysis, synthesis, systematic approach. Analysis. The comparison of the evidence of participants in the construction of the Tsaritsyn defense line (1719–1720) and cartographic plans of its fortifications made it possible to determine the main characteristics of military engineering facilities located at it. Additionally, the analysis of cartographic sources, the manuscript division of the Library of the Academy of Sciences and the documents of the Main Office of Artillery and Fortification helped to determine the time frame and the author of the map “of the defensive line between the Volga and the Don” of 1723, which has not previously been used by researchers when working on the issue of fortification of the Tsaritsyn defense line in the first years of its operation. Results. As a result of the conducted research, it was found that since the beginning of commissioning in 1720, the main fortification objects were formed at the Tsaritsyn defense line, which were part of the complex of its defensive structures, which remained the main fortifications during the entire time of its operation until the abolition of service on it.

scholarly journals Value functions in a regime switching jump diffusion with delay market model

2021 ◽  
Vol 6 (10) ◽  
pp. 11595-11609
Author(s):  
Dennis Llemit ◽  
◽  
Jose Maria Escaner IV
Keyword(s):  
Differential Equation ◽  
Stochastic Optimization ◽  
Utility Function ◽  
Optimization Problem ◽  
Jump Diffusion ◽  
Risky Asset ◽  
Market Model ◽  
Logarithmic Utility ◽  
Stochastic Optimization Problem ◽  
History Of

<abstract><p>In this paper, we consider a market model where the risky asset is a jump diffusion whose drift, volatility and jump coefficients are influenced by market regimes and history of the asset itself. Since the trajectory of the risky asset is discontinuous, we modify the delay variable so that it remains defined in this discontinuous setting. Instead of the actual path history of the risky asset, we consider the continuous approximation of its trajectory. With this modification, the delay variable, which is a sliding average of past values of the risky asset, no longer breaks down. We then use the resulting stochastic process in formulating the state variable of a portfolio optimization problem. In this formulation, we obtain the dynamic programming principle and Hamilton Jacobi Bellman equation. We also provide a verification theorem to guarantee the optimal solution of the corresponding stochastic optimization problem. We solve the resulting finite time horizon control problem and show that close form solutions of the stochastic optimization problem exist for the cases of power and logarithmic utility functions. In particular, we show that the HJB equation for the power utility function is a first order linear partial differential equation while that of the logarithmic utility function is a linear ordinary differential equation.</p></abstract>

scholarly journals Ombilin Coal Mine Site: History and Potential as a Learning Source for the History of the Economy Based on Outdoor Learning

2020 ◽  
Vol 3 (3) ◽  
pp. 1343-1352
Author(s):  
Rosmati Rosmiati ◽  
Anny Wahyuni ◽  
Amir Syarifuddin
Keyword(s):  
Coal Mining ◽  
Coal Mine ◽  
Outdoor Learning ◽  
Learning Resource ◽  
Mine Site ◽  
Secondary Sources ◽  
History Of ◽  
Descriptive Approach ◽  
The City ◽  
Site History

This study aims to determine the history of the Ombilin Sawahlunto coal mine, the use of this site as a historical learning resource based on outdor learning and the obstacles it faces in its utilization. The method used in this research is qualitative with a descriptive approach. The sources used were interviews, literature and newspapers. After collecting the sources and separating the primary and secondary sources, rewrite them. The research results found that government projects in the city of sawahlunto consist of three projects including first, exploitation of coal mines, second, construction of railways, third, construction of the port of Emmahaven (Teluk Bayur). Traces of Dutch heritage that still exist today are the railway museum, Goedang Ranseum, Mbah Soero Mine Hole, and the Coal Mining Museum. This legacy can be used as a source of historical learning based on outdor learning.

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