scholarly journals ANALYSIS OF TURKISH RESIDENTIAL CONSTRUCTION MARKET DYNAMICS FOR THE PERIODS OF 2010–2015, 2015–2019, AND PROJECTIONS FOR THE FUTURE

2020 ◽  
Vol 12 (1) ◽  
pp. 1-7
Author(s):  
Mehmet Emre Çamlibel ◽  
Natalija Lepkova ◽  
Çağdaş Aygün
Keyword(s):  
Positive Development ◽  
Residential Construction ◽  
Market Dynamics ◽  
Negative Effects ◽  
Change Analysis ◽  
Construction Market ◽  
Macro Scale ◽  
Residential Market ◽  
Economic Developments ◽  
Stock Volume

The Turkish residential market supported by macro-economic developments is of great importance for the country's economy and the construction industry. The main purpose of this study is to analyze the Turkish residential construction market dynamics, especially in terms of price-cost and supply-demand regimes and conduct future projections. For this purpose, analysis of construction cost and residential price indexes, total and mortgaged residential sales, and construction and occupancy permits were evaluated utilizing institutional data. In addition, positive and negative effects of the changes in the residential prices in the macro scale were examined. After, conducting the residential price and cost change analysis for between 2010-2023, future stock volume and residential market projections were carried out. As a result of the analysis, we can divide the residential market into 3 periods: positive development period between 2010 and 2015, the recession period from 2015 to 2019, and the period after 2020. In the projection, depending on the supply contraction and the results of demand changes, price and cost increases, the current residential stock volume will reach its lowest level by 2023. Following this, the last period is expected to reach a more balanced residential market shaped by need-based purchases rather than individual investments.

BUSINESS-LEVEL STRATEGIC MANAGEMENT IN CROATIAN TOURISM

2003 ◽  
Vol 9 (2) ◽  
pp. 65-78
Author(s):  
Vinka Cetinski ◽  
Slobodan Ivanović
Keyword(s):  
Strategic Management ◽  
Management System ◽  
Integrated Approach ◽  
Positive Development ◽  
Capital Investments ◽  
Strategic Decisions ◽  
Negative Effects ◽  
Tourist Destinations ◽  
Management Concept

There are few activities so susceptible to the impacts of the macro environment as tourism. In conditions of growing uncertainty, the importance of strategic management is steadily increasing. By studying the environment, by anticipating the future development and implication of trends on enterprises, and by developing appropriate strategies at a number of levels, strategic management seeks to actively influence the increase o f competitive advantages o f both the tourist destinations and tourist enterprises. The term “strategic management” implies a set of management decisions and actions that determine the long-term operations o f enterprises within the management system of tourism: guiding the enterprise by anticipating crucial environmental impacts and internal factors. This management concept is based on the assumption that making properly oriented strategic decisions minimizes the negative effects of the environment and creates strategic advantages for enterprises that can be capitalised only in the medium and long term (Čizmar S. (2001) Strateško upravljanje u funkciji učinkovitog razvoja turističkog ugostiteljstva u Hrvatskoj, doctoral dissertation, University o f Zagreb, Faculty of Economics, Zagreb, p. 3). It represents an integrated approach to strategic management that is the most acceptable for the development of Croatian tourism, as long-term positive results, in both market and financial terms, can be achieved by enterprises within the tourism management system of Croatia only by applying an integrated approach to strategic management, by horizontally and vertically linking the elements of all subsystems of the entire management system and by creating partnering relationships. The Croatian model of strategic management should involve the economic optimisation of all subsystems and systems by establishing efficiency not only across all subsystem elements, but through the system as a whole as well. The level of growth in entrepreneurship and innovations will determine the intensity and speed of positive development changes. These changes will also depend on establishing management responsibilities throughout all segments and managements levels of all subsystems, as well as tourism as an integral system. This paper deals with the issues of strategic management at a micro level with special emphasis on the development of responsibility for managing performance and capital investments.

scholarly journals Performance and wake characteristics of tidal turbines in an infinitely large array

2021 ◽  
Vol 925 ◽  
Author(s):  
Pablo Ouro ◽  
Takafumi Nishino
Keyword(s):  
Bulk Velocity ◽  
Large Array ◽  
Negative Effects ◽  
Local Flow ◽  
Flow Acceleration ◽  
Positive Effects ◽  
Tidal Turbines ◽  
Macro Scale ◽  
Wake Interactions ◽  
Blockage Effect

The efficiency of tidal stream turbines in a large array depends on the balance between negative effects of turbine-wake interactions and positive effects of bypass-flow acceleration due to local blockage, both of which are functions of the layout of turbines. In this study we investigate the hydrodynamics of turbines in an infinitely large array with aligned or staggered layouts for a range of streamwise and lateral turbine spacing. First, we present a theoretical analysis based on an extension of the linear momentum actuator disc theory for perfectly aligned and staggered layouts, employing a hybrid inviscid-viscous approach to account for the local blockage effect within each row of turbines and the viscous (turbulent) wake mixing behind each row in a coupled manner. We then perform large-eddy simulation (LES) of open-channel flow for 28 layouts of tidal turbines using an actuator line method with doubly periodic boundary conditions. Both theoretical and LES results show that the efficiency of turbines (or the power of turbines for a given bulk velocity) in an aligned array decreases as we reduce the streamwise turbine spacing, whereas that in a staggered array remains high and may even increase due to the positive local blockage effect (causing the local flow velocity upstream of each turbine to exceed the bulk velocity) if the lateral turbine spacing is sufficiently small. The LES results further reveal that the amplitude of wake meandering tends to decrease as we reduce the lateral turbine spacing, which leads to a lower wake recovery rate in the near-wake region. These results will help to understand and improve the efficiency of tidal turbines in future large arrays, even though the performance of real tidal arrays may depend not only on turbine-to-turbine interactions within the array but also on macro-scale interactions between the array and natural tidal currents, the latter of which are outside the scope of this study.

Degradation or recovery of argan woodlands in South Morocco? Tree count from satellite imagery between 1967–2019 may underestimate pressures on dryland forests status

2021 ◽  
Author(s):  
Irene Marzolff ◽  
Mario Kirchhoff ◽  
Robin Stephan ◽  
Manuel Seeger ◽  
Ali Aït Hssaïne ◽  
...  
Keyword(s):  
Forest Cover ◽  
Canopy Cover ◽  
Biosphere Reserve ◽  
Agroforestry System ◽  
Tree Density ◽  
Tree Cover ◽  
Positive Development ◽  
Natural State ◽  
Remotely Sensed Data ◽  
Change Analysis

<p>In semi-arid to arid South-west Morocco, the once ubiquitous endemic argan tree (<em>Argania spinosa</em>) forms the basis of a traditional silvo-pastoral agroforestry system with complex usage rights involving pasturing and tree-browsing by goats, sheep and camels, smallholder agriculture and oil production. Widespread clearing of the open-canopy argan forests has been undertaken in the 12<sup>th</sup>–17<sup>th</sup> century for sugarcane production, and again in the 20<sup>th</sup> century for fuelwood extraction and conversion to commercial agriculture. The remaining argan woodlands have continued to decline due to firewood extraction, charcoal-making, overgrazing and overbrowsing. Soil and vegetation are increasingly being degraded; natural rejuvenation is hindered, and soil-erosion rates rise due to reduced infiltration and increased runoff. Numerous studies indicate that tree density and canopy cover have been generally decreasing for the last 200 years. However, there is little quantitative and spatially explicit information about these forest-cover dynamics.</p><p>In our study, the tree-cover change between 1967 and 2019 was analysed for 30 test sites of 1 ha each in argan woodlands of different degradation stages in the provinces of Taroudant, Agadir Ida-Outanane and Chtouka-Aït Baha. We used historical black-and-white satellite photography from the American reconnaissance programme CORONA, recent high-resolution multispectral imagery from the commercial WorldView satellites and ultrahigh resolution small-format aerial photography taken with an unmanned aerial system (UAS) to map the presence, absence and comparative crown-size class of 2610 trees in 1967 and 2019. We supplemented the remotely-sensed data with field observations on tree structure and architecture.</p><p>Results show that plant densities reach up to 300 argan trees and shrubs per hectare, and the mean tree density has increased from 58 trees/ha in 1967 to 86 trees/ha in 2019. While 7% of the 1967 trees have vanished today, more than one third of today’s trees could not be observed in 1967. This positive change has a high uncertainty, however, as most of the increase concerns small trees (< 3 m diameter) which might have been missed on the lower-resolution CORONA images.</p><p>When combined with our field data on tree architecture, tree count – albeit a parameter easily attained by remote sensing – is revealed as too simple an indicator for argan-forest dynamics, and the first impression of a positive development needs to be revised: The new small trees as well as trees with decreased crown sizes clearly show much stronger degradation characteristics than others, indicating increased pressures on the argan ecosystem during recent decades. Structural traits of the smaller trees also suggest that the apparent increase of tree count is not a result of natural rejuvenation, but mostly of stump re-sprouting, often into multi-stemmed trees, after felling of a tree. The density of the argan forest in the 1960s, prior to the general availability of cooking gas in the region and before the stronger enforcement of the argan logging ban following the declaration of the UNESCO biosphere reserve, may have marked a historic low in our study area, making the baseline of our change analysis far removed from the potential natural state of the argan ecosystem.</p>

scholarly journals Causes of Rework in Construction Projects in Ukraine

2019 ◽  
Vol 65 (3) ◽  
pp. 61-74
Author(s):  
R. Trach ◽  
K. Pawluk ◽  
M. Lendo-Siwicka
Keyword(s):  
Soviet Union ◽  
Construction Projects ◽  
Significant Decline ◽  
Real Estate Development ◽  
Negative Effects ◽  
Construction Enterprises ◽  
Construction Market ◽  
The Soviet Union ◽  
Political Turmoil

AbstractThe collapse of the Soviet Union was the cause of a significant decline in many economies of the newly created countries. However, many of them, including the Ukrainian economy, are slowly recovering. One of the largest branches of the economy in this country is construction, which, despite political turmoil, is constantly growing, especially in the private real estate development sector. Despite the fact that the construction market is constantly developing, it is limited by the costs of rework and alterations resulting from many reasons. The key negative effects of modifications to the results of the project are exceeding the budget and time of project implementation, dissatisfaction with the project team, violation of contractual requirements and lowering the quality of the final product. Therefore, the purpose of this article was to determine the reasons for the emergence of rework in the in Ukraine by analyzing the results of surveys conducted among construction enterprises.

scholarly journals Pathways to Positive Development for Muslim Immigration Youth in Western Contexts

2021 ◽  
Author(s):  
◽  
Jaimee Ellen Stuart
Keyword(s):  
New Zealand ◽  
Young People ◽  
Positive Development ◽  
National Society ◽  
Cultural Transition ◽  
Negative Effects ◽  
Youth Outcomes ◽  
Muslim Youth ◽  
Ecological Resources ◽  
Migrant Youth

<p>Muslim youth growing up in Western contexts face a complex set of issues as a result of meeting the various, and often incongruent, expectations placed upon them by their family, religion, ethnic community and host national society. This group of young people is often thought to face high risks of maladaptation, as they potentially experience the negative effects of acculturation more so than host nationals or other immigrant youth. Recent research, however, has suggested that many Muslim migrant young people are successfully negotiating their experiences of cultural transition in Western societies. Therefore, the major aim of this thesis was to obtain systematic data on young Muslim migrant’s “pathways to positive development”, or how these young people achieve successful adaptation in the face of adversity. To examine the complexities of Muslim migrant youth acculturation fully, it is necessary to have a comprehensive understanding of their lived experiences within and across contexts. In order to achieve this, four studies were conducted utilising mixed methodologies and drawing on a range of psychological and sociological theories, predominantly focusing on acculturation, development and religiosity. Study 1 qualitatively investigated the indicators and determinants of participation and success for Muslim youth in the New Zealand environment. The results of this study enabled a framework to be developed that illustrates the most salient ecological resources youth access (family, religion and the intercultural environment), the risks they face (discrimination and cultural differences) and outcomes of the acculturation process. In study 2, this framework was refined by drawing upon theories of resilience, and subsequently was tested quantitatively with a sample of Muslim youth in New Zealand. Results from this study indicate that while Muslim youth in New Zealand may be at risk of maladaptative outcomes because of their exposure to discrimination and cultural transition, ecological resources may counteract some of the negative effects of these stressors. Study 3 sought to test whether the results found in study 2 were generalisable to Muslim youth in other contexts by carrying out a comparative analysis of youth outcomes in New Zealand and the United Kingdom. These societies were chosen to be compared because they share a similar historic culture but have taken very different routes to social cohesion and the inclusion of minorities. The major aim of this study was to investigate whether the country of settlement has an impact on the adaptation of Muslim migrant youth. The results demonstrate that the cultural environment of migration plays an important contributing factor to both the experience of stress and the achievement of positive adaptation above and beyond the effects of resources. Finally, study 4 utilised techniques of multilevel modelling to examine the acculturation experiences of Muslim youth cross-culturally. Drawing on the International Comparative Study of Ethnocultural Youth (ICSEY) data, Muslim migrant youth from 9 Western receiving nations were examined. Results indicate that the ideological context (cultural values and host national attitudes towards immigrants) has important effects on individual levels of adaptation and the experience of perceived discrimination. The findings of this thesis contribute novel perspectives to acculturation and development research as well as cross-cultural psychology more generally. Using multiple methods in the study of psychological phenomena enables a move beyond traditional descriptions of acculturation processes as situated predominantly within one cultural setting and advances our understanding of how Muslim youth fare in a global context.</p>

Approach of Cross-Country Comparisons on Residential Construction Industry for China

2014 ◽  
Vol 584-586 ◽  
pp. 2510-2513
Author(s):  
Cheng Gang Xu ◽  
San Hua Sheng
Keyword(s):  
Construction Industry ◽  
Purchasing Power Parity ◽  
Residential Construction ◽  
Purchasing Power ◽  
Power Parity ◽  
Construction Market ◽  
International Construction ◽  
Cross Country ◽  
Price Distortions ◽  
Currency Conversion

In cross-country comparisons of construction economy, the purchasing power parity index as a currency conversion coefficient can substitute for the exchange rates reduce construction price distortions. According to BOCC method, the special development conditions of residential construction industry for China and the regional differences of non-tradable goods, we propose the practices estimating purchasing power parity for the basic building, small and micro engineering between the countries of geographical proximity, which help the development of space index of China's construction cost and are an effective ways to accelerate contacts with the international construction market.

Studies on Galling Behavior in Square Cup Drawing of High Tensile Strength Steel

2010 ◽  
Vol 160-162 ◽  
pp. 1409-1413
Author(s):  
Qi Quan Lin ◽  
Wen Zheng Dong ◽  
Zhi Gang Wang
Keyword(s):  
Tensile Strength ◽  
Tool Material ◽  
The Finite Element Method ◽  
High Tensile Strength ◽  
Change Analysis ◽  
Macro Scale ◽  
Die Surface ◽  
Drawing Dies ◽  
Cup Drawing ◽  
Deform 3D

In this study, galling behavior in macro-scale is investigated in the square cup drawing of a high tensile strength steel in semi-dry and dry condition on laboratory experiments. The drawing dies are set two types: the non-coated (SKD11, ADI and SLD) and coated (TiC and DLC-Si). When using the non-coated dies in semi-dry, the macro-scale galling can clearly observed on die and drawn cup surface after a few drawing cycles. As a result, the galling on the die surface occurs at the bottom point of the boundary between the straight and corner edge, and grows upward with the drawing cycles; on the drawn cup, the galling starts at the top of the same boundary and grows downward. Simultaneously, the finite element method (FEM) with DEFORM-3D was used to simulate the square cup drawing process with the respect to the drawing force distribution and volume change analysis, which gave us a rational interpretation of the galling phenomena and illustrated the galling behavior and seizing tumour theoretically. Furthermore, a continued experiment with coated dies for TiC (CVD) and DLC-Si (DC -PACVD) was carried out to seek a anti-galling tool material for the high tensile strength steel.

scholarly journals RESEARCH TRENDS IN THE CONSTRUCTION INDUSTRY RUSSIAN FEDERATION

2019 ◽  
Vol 8 (6) ◽  
Author(s):  
Albina Khairullina ◽  
Larisa Nabieva ◽  
Aigul Sabirova
Keyword(s):  
Construction Industry ◽  
Russian Federation ◽  
Positive Development ◽  
Construction Companies ◽  
Construction Market ◽  
Current State ◽  
Construction Organizations ◽  
The Russian Federation ◽  
The Republic ◽  
The Government

This article analyzes the current state of the construction industry of the Russian Federation at the federal and local (for example, the Republic of Tatarstan) levels. The features and trends of the construction industry of the Russian Federation (RF) are considered, taking into account the changes in the legislation affecting this industry. The authors analyzed the statistics of housing commissioning, the dynamics of lending and debt of construction organizations, in addition, the analysis of statistics of bankruptcies of companies. The key players in the construction market of the Republic of Tatarstan were studied, and their reliability rating was presented. Based on the results of the analyzed material, certain conclusions were formulated. Based on the findings, it was determined that in the Russian Federation the construction industry is experiencing some difficulties that require special attention from the state. However, at present the government is already taking certain steps towards improving the current situation. As it was revealed, in the Republic of Tatarstan, the construction industry has had a positive development dynamics over several years. In recent years, there has been an increase in housing commissioning. In addition, the government annually invests in the construction industry. Despite this, in Tatarstan there is a high percentage of bankruptcies of construction companies, the reasons for which are identified in this article.

scholarly journals ASSESSMENT OF LIMITATIONS OF BIM IMPLEMENTATION IN RESIDENTIAL CONSTRUCTION

2021 ◽  
Vol 13 (0) ◽  
pp. 1-4
Author(s):  
Marius Viliūnas ◽  
Darius Migilinskas
Keyword(s):  
Residential Construction ◽  
Construction Process ◽  
Building Information Modelling ◽  
Information Modelling ◽  
Market Participants ◽  
Construction Market ◽  
The World ◽  
The Future ◽  
Building Information ◽  
Use Phase

Building Information Modelling (BIM) is increasingly being implemented both in the World and in Lithuania. The benefits provided by BIM promise a much more efficient and smoother construction process and suggest that the construction market of the future will continue to develop based on the BIM methodology. However, both the implementation and development of BIM can face some challenges, obstacles and limitations for construction market participants that occur with the use of BIM and that can slow down the smooth implementation of a project. This paper examines the difficulties of BIM in the implementation and use phase. During the research, the literature sources were analysed describing the implementation of BIM in the development of residential and other projects. The advantages and challenges of BIM described by the authors were analysed, and the emerging problems were highlighted. The literature sources analysed and found BIM limitations were grouped according to the most frequently mentioned.Building Information Modelling (BIM) is increasingly being implemented both in the World and in Lithuania. The benefits provided by BIM promise a much more efficient and smoother construction process and suggest that the construction market of the future will continue to develop based on the BIM methodology. However, both the implementation and development of BIM can face some challenges, obstacles and limitations for construction market participants that occur with the use of BIM and that can slow down the smooth implementation of a project. This paper examines the difficulties of BIM in the implementation and use phase. During the research, the literature sources were analysed describing the implementation of BIM in the development of residential and other projects. The advantages and challenges of BIM described by the authors were analysed, and the emerging problems were highlighted. The literature sources analysed and found BIM limitations were grouped according to the most frequently mentioned.

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