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This study aims to identify key indicators affecting the residents' perception of overall quality of urban life in the Walled City of Famagusta, the historic core of the city, which reflects a decaying socio-spatial quality. The paper first presents a brief overview of the research methodology and then analyses the results from a household survey carried out in the Walled City, in order to provide a sheer understanding of people's feelings about their neighbourhood environment and the overall urban quality of life in case of implementation of a possible regeneration scheme for the area. The research contributes some empirical evidence to verify the claimed benefits and shortcomings in terms of effects of neighbourhood satisfaction, sense of community, sense of belonging, neighbourhood attributes, use/evaluation of cultural and recreational opportunities and safety on the overall quality of urban life of the residents, as well as to identify the predictors of the neighbourhood satisfaction.

This paper aims to offer a simultaneous design approach for helicopter having swept anhedral blade tip shape and helicopter flight control system (HFCS) to minimize controller cost.

By considering previously stated offer, control-oriented models and a stochastic optimization method are applied to minimize controller cost of the HFCS.

Using simultaneous design approach for helicopters having blade tip swept and blade tip anhedral causes considerably less control effort than the helicopters not benefiting this related design approach.

Simultaneous design approach for helicopters having blade tip swept and blade tip anhedral is applicable to consider fuel economy.

One important novelty of this paper is using simultaneous approach for determining optimum shape of blade tip swept and anhedral. Another considerable novelty of this paper is also using a stochastic optimization method called simultaneous perturbation stochastic approximation for previously mentioned purpose. In this paper, it is also reached that using simultaneous design approach for swept anhedral helicopter blade tip shape and HFCS causes less control effort than the helicopters not using this approach. This leads to less fuel consumption and green environment.

The significance of ecological citizenship for the sustainable urbanism discourse has been highly recognised in recent years. Targeting to adopt ecological citizenship as a lifestyle among urban residents appears potentially significant and urgent for the city of Famagusta, North Cyprus. As a result of unsustainable urban development, Famagusta dictates a new way of living to its inhabitants that is not familiar to them in terms of local sociocultural characteristics and environmental values. Therefore, a user survey was carried out among local people, within a random sample of 165 residents, in order to obtain scientific data that may be used for the needed planning policies. Within the survey, environmental attitudes of the residents were measured with the help of Dunlop and Van Liere’s New Environmental Paradigm (NEP) scale. The aim was to understand the level of their existing environmental worldview, one of the basic aspects of ecological citizenship. The results of the survey reveal that Famagusta residents’ existing environmental attitudes cannot achieve an adequate level in order to be one of the dynamics shaping their lifestyles. However, residents have slightly more than a medium level of environmental worldview.

In the last few decades, the increasing urban population and heterogeneous quality, the expansion of urban areas, the intensification of developments within existing cities, the continued proliferation of the high rise and other intensive building types, the deterioration of both natural and cultural resources, and the results of the recent struggles for international capital as secure and favorite places has been threatening the image and identity of cities more than ever. In this context, the concepts of transformation and identity, which in turn reflect on urban sustainability, need to be rein-tegrated into the agenda of planners and designers. As cities are always changing and evolving in response to social, economic and political forces, the urban environment has to be considered in a time-based perspective identifying the changes in the local context. In line with these, this paper searches for urban identity in the case of samsun, a symbolic city which has played an important role on the development of modern Turkey, where transformations are dramatic. As the general understanding and the majority of the literature have been restricted to the perspective of form and other physical issues, and neglected to consider the social dimension of environment, which in turn brings about standardized ‘urban design guide' or ‘make-up' type solutions, this will enable the paper to have a holistic framework dealing with all aspects of transformation and provide the reader with a broad-based and innovative perspective towards the vision of cities with place identity.

The purpose of this paper is to obtain values that stabilize the lateral and longitudinal flight of the quadrotor for which the morphing amount and the best Proportional-Integral-Derivative (PID) coefficients are determined by using the simultaneous perturbation stochastic approximation (SPSA) optimization algorithm.

Quadrotor consists of body and arms; there are propellers at the ends of the arms to take off and rotors that rotate them. By reducing the angle between mechanism 1 and the rotors with the horizontal plane, the angle between mechanism 2 and the arms, the rotors rise and different configurations are obtained. Conventional multi-rotor aircraft has a fixed fuselage and does not need a tail rotor to change course as helicopters do. The translational and rotational movements are provided by the rotation of the rotors of the aircraft at different speeds by creating moments about the geometric center in 6-degree-of-freedom (DOF) space. These commands sent from the ground are provided by the flight control board in the aircraft. The longitudinal and lateral flight stability and properties of different configurations evaluated by dynamic analysis and simulations in 6 DOF spaces are investigated. An algorithm and PID controller are being developed using SPSA to achieve in-flight position and attitude control of an active deformable aircraft. The results are compared with the results of the literature review and the results of the previous article.

With SPSA, the best PID coefficients were obtained in case of morphing.

The effects of quadrotor arm height and hub angle changes affect flight stability. With the SPSA optimization method presented in this study, the attitude is quickly stabilized.

With the optimization method, the most suitable PID coefficients and angle values for the lateral and longitudinal flight stability of the quadrotor are obtained.

The transition rate and PID coefficients are determined by using the optimization method, which is advantageous in terms of cost and practicality.

With the proposed method, the aircraft can change shape to adapt to different environments, and the parameters required for more stable flight for each situation will be calculated, and this will be obtained more quickly and safely with the SPSA optimization method.

With increasing urbanisation in developing countries and the concomitant overcrowding on streets, serious questions remain about the liveability of inner-city residential-commercial streets. This paper contends that lively streets are not necessarily liveable streets. Liveability is defined by other criteria that take cognizance of human comfort and capabilities within living environments. Observations suggest an uneasy relationship between a crowded public space and the private residential spaces that sit next to them. The paper’s focus is to measure the liveability of a lively but overcrowded street and how its everyday use affects the physical characteristics of buildings, the activities, and the wellbeing of residents. Employing a mixed-method strategy, the study draws on observations, semi-structured interviews, and questionnaire survey of residents, shopkeepers, and street traders. The findings suggest that an overcrowded street space has a negative effect on the liveability and quality of living of residents and other users but that this is tempered by intra-dependency amongst the users and the negotiation of the rights accruing to all as individuals and as groups.

This paper aims to determine the challenges and prospects for affordable housing within the context of sustainability by investigating the socio-economic and environmental impacts of housing developments based on the analysis of four so-called affordable housing schemes in Yola, Nigeria. Using questionnaire survey and indicators developed from literature reviews on affordable and sustainable housing, the findings suggest that due to inadequate availability of housing inputs (land, finance, infrastructure, labor and materials), lack of diversity, improper location, inefficient transport facilities and lack of user participation, the examined developments are neither sustainable nor affordable. The research hence contributes some empirical evidence to overcome the defined shortcomings and provides a basis for governments' housing commitments towards reforming and devising policies for community involvement in housing provision, providing easy access to land with legal title deeds, easy access to housing finance, infrastructure, etc.

The purpose of this paper presents the effects of actively morphing root chord and taper on the energy of the flight control system (i.e. FCS).

Via regarding previously mentioned purposes, sophisticated and realistic helicopter models are benefitted to examine the energy of the FCS.

Helicopters having actively morphing blade root chord length and blade taper consume less control energy than the ones having one of or any of passively morphing blade root chord length and blade taper.

Actively morphing blade root chord length and blade taper can be used for cheaper helicopter operations.

The main originality of this paper is applying active morphing strategy on helicopter blade root chord and blade taper. In this paper, it is also found that using active morphing strategy on helicopter blade root chord and blade taper reasons less energy consumption than using either passively morphing blade root chord length plus blade taper or not any. This causes also less fuel consumption and green environment.

The purpose of this study is to increase maximum lift/drag ratio (E_max) of tactical unmanned aerial vehicles (TUAVs) via applying novel small aerodynamic modifications.

A TUAV is manufactured in Erciyes University, Faculty of Aeronautics and Astronautics, Model Aircraft Laboratory. It has both passive and active morphing capabilities. Its nosecone and tailcone shapes are redesigned to improve E_max. Moreover, active flow control is also built on its wing for improving E_max.

Using these novel small aerodynamic modifications, considerable improvement on E_max is obtained.

Permission of Directorate General of Civil Aviation in Turkey is required for testing TUAVs in real-time applications.

Small aerodynamic modifications such as nosecone-tailcone shape modifications and building active flow control on wing are very beneficial for improving E_max of TUAVs.

Small aerodynamic modifications satisfy confidence, high performance and easy utility demands of TUAV users.

The study will enable the creation of novel approaches to improve E_max value and therefore aerodynamic performance of TUAVs.

This study¹ seeks to identify and propose a model for measuring and assessing the level of sustainability in housing environments based on a range of indicators. With this intention, the article is composed of four main parts. In the first part, the relationship between sustainability and housing is presented based on previous research; in the second part, a theoretical framework is put forward for sustainable housing. Then in the third part, sustainability indicators are discussed thoroughly within the context of indicator frameworks. In this section, the development, selection and measuring processes of indicators are also introduced. Finally in the fourth part, the model for measuring and assessing the level of sustainability in housing environments is presented. It is believed that this model will be used as a tool in the decision-making processes for the future development of existing housing settlements and their environments.