The architectural form and landscape as a harmonic entity in the vernacular settlements of Southwestern Saudi Arabia

The paper aims to describe the architectural form and landscape as a harmonic entity in vernacular settlements of southwestern Saudi Arabia. The qualities of vernacular settlements and their integration and responsiveness to the physical, social, economic and cultural environment are demonstrated in this study. The socio-economic activities and customs in southwestern Saudi Arabia are presented as part of the historical process. The paper looks at the major elements of the vernacular villages and landscape as cultural-specific images. While appreciating this, the author laments the way this harmony has been disrupted not least aesthetically as a consequence of modernism which had an impetus on changing life style and social expectation. The cultural-specific images involve direct relationships between the architectural and urban forms as systems and events that are taking place in or around that form. One thesis is that each element of the vernacular village and landscape is linked to an image that shapes and influences human behavior and appreciation, thereby helping to shape larger environmental patterns. Beyond the meaning that specific elements inherit, they have functional and economic values. As a result, their visual qualities are believed to be effective in enhancing behavior through their visual attributes. One of the most important conclusions is that, there are many features of modern village extensions and landscape elements that enhance the interaction with the physical environment that ordinary citizens value, and there are elements of the vernacular villages and landscape that people regret to lose, such as ‘qasabahs', weekly markets, cultivation of terraces, etc. This is inspite of today's, modern planning and design techniques that are being sought to produce new architectural forms and landscape elements. Any attempt to substitute vernacular forms without taking into account the values that the older forms held is considered a failure of adopted modernist attitudes.     

Procrustes shape analysis of triangulations of a two coloured point pattern

Consider a set of points in the plane with Gaussian perturbations about a regular mean configuration in which a Delaunay triangulation of the mean of the process is comprised of equilateral triangles of the same size. The points are labelled at random as black or white with variances of the perturbations possibly dependent on the colour. By investigating triangle subsets (with four sets of possible colour labels for the vertices) in detail we propose various test statistics based on a Procrustes shape analysis. A simulation study is carried out to investigate the relative merits and the adequacy of the approximations used in the distributional results, as well as a comparison with simulation methods based on nearest-neighbour distances. The methodology is applied to an investigation of regularity in human muscle fibre cross-sections.     

Comparison of the finite mixture of ARMA-GARCH,back propagation neural networks and support-vector machines in forecasting financial returns

The use of GARCH type models and computational-intelligence-based techniques for forecasting financial time series has been proved extremely successful in recent times. In this article, we apply the finite mixture of ARMA-GARCH model instead of AR or ARMA models to compare with the standard BP and SVM in forecasting financial time series (daily stock market index returns and exchange rate returns). We do not apply the pure GARCH model as the finite mixture of the ARMA-GARCH model outperforms the pure GARCH model. These models are evaluated on five performance metrics or criteria. Our experiment shows that the SVM model outperforms both the finite mixture of ARMA-GARCH and BP models in deviation performance criteria. In direction performance criteria, the finite mixture of ARMA-GARCH model performs better. The memory property of these forecasting techniques is also examined using the behavior of forecasted values vis-à-vis the original values. Only the SVM model shows long memory property in forecasting financial returns.     

Axiomatic Based Decomposition for Conceptual Product Design

This paper describes a structured methodology for decomposing the conceptual design problem in order to facilitate the design process and result in improved conceptual designs that better satisfy the original customer requirements. The axiomatic decomposition for conceptual design method combines Alexander's network partitioning formulation of the design problem with Suh's Independence Axiom. The axiomatic decomposition method uses a cross‐domain approach in a House of Quality context to estimate the interactions among the functional requirements that are derived from a qualitative assessment of customer requirements. These interactions are used in several objective functions that serve as criteria for decomposing the design network. A new network partitioning algorithm is effective in creating partitions that maximize the within‐partition interactions and minimize the between‐partition interactions with appropriate weightings. The viability, usability, and value of the axiomatic decomposition method were examined through analytic comparisons and qualitative assessments of its application. The new method was examined using students in engineering design capstone courses and it was found to be useable and did produce better product designs that met the customer requirements. The student‐based assessment revealed that the process would be more effective with individuals having design experience. In a subsequent assessment with practicing industrial designers, it was found that the new method did facilitate the development of better designs. An important observation was the need for limits on partition size (maximum of four functional requirements.) Another issue identified for future research was the need for a means to identify the appropriate starting partition for initiating the design.     

The Sidewalk as a Contested Space: Women’s Negotiation of Socio-Spatial Processes of Exclusion in Public Urban Space in Saudi Arabia; The Case of Al Tahlia Street

Riyadh is one of the most gender-segregated cities in the world. However, as gender segregation is less enforced on sidewalks, it provides an optimal case study for a space where women and men may be co-present. Thus, this paper aims to increase the understanding of the relationship between sociocultural norms and spatial programming regarding spatio-temporal inclusion or exclusion in public urban spaces. The results show that women’s use and access to sidewalks are influenced by gender norms, religious values, gendered regulations, and generic spatial programming. For instance, regulations limit the use of outdoor seating to men only, thus sidewalks adjacent to, e.g., cafes function as mono-gender spaces dominated by men. However, young women negotiate spatially bounded gender norms through their presence, behaviour, and dress. Although sidewalks are conceived as men’s space, women account for nearly half of the users, but their use often goes unnoticed as women self-regulate their spatio-temporal and visible presence. The study presents six types of women’s spatio-temporal behaviours with varying degrees of visible and invisible users. Ultimately, this paper argues that planning for inclusive sidewalks cannot be addressed solely through the ‘universal’ characterization of space; it should also be supplemented by context-specific knowledge regarding the socio-spatial needs.     

Creating a better kinship environment for children in Ghana: Lessons from young people with informal kinship care experience

Traditionally, the involvement of the extended family in nurturing children is seen as an essential cultural practice in most communities in Ghana. Though not formally regulated, often in the absence of birth parents, kin and kith continue to be involved in the care of children to promote family relations and culture. Yet there is little empirical evidence on how to improve the well‐being and safety of children in informal kinship care in Ghana. Thus, this study reports findings from in‐depth interviews with 15 young people, 18 to 23 years, from Banda—an ethnic group where informal kinship care is an accepted cultural practice. Data from the interviews were subjected to the constructivist grounded theory analysis. Adequate income for provision of basic needs, education and training, and supervision emerged as useful measures to promote the safety and well‐being of children in kinship care. It was recommended that informal kinship caregivers must be registered with the Department of Social Welfare to enable them access support and training. Further, social workers should create awareness among kinship caregivers in Ghana about their availability to provide counselling services for caregivers facing challenges.     

Does Transformational Leadership Better Predict Work-Related Outcomes Than Transactional Leadership in the NPO Context? Evidence from Italy

VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - With limited studies on the relative effectiveness of different leadership styles in NPOs, the purpose of this paper is to...     

Challenges to the Emiratisation process: content analysis

After the discovery of oil in 1970s, the United Arab Emirates experienced explosive growth and was able to establish a strong economy in 30 years. Since then, the country has attracted foreign direct investment, and it has maintained its growth strategy by relying on foreign skilled labourers from around the world. Consequently, Emirati nationals were predominantly recruited to and preferred the public sector. Today, as government growth stagnates, the United Arab Emirates’ government is encouraging the private sector to recruit more Emirati nationals. This paper analyzes the current Emiratisation process by looking into the barriers to it via a content analysis of business-focused newspapers published in the country. Unlike previous research, this paper prioritizes the challenges in descending order: skill standards, salary and benefits, and business hours. These challenges have impeded the recruitment of Emirati nationals into the private sector.     

Utility Subsidies as Social Transfers: An Empirical Evaluation of Targeting Performance

Subsidies to residential utility customers are important in‐kind transfer mechanisms in developing countries. Do these subsidies reach the poor? This article finds the average targeting performance of water and electricity subsidies to be similar to that of other social‐transfer mechanisms using the same targeting method. The most common form — a quantity‐based consumption subsidy aiming to subsidise low‐volume customers — is highly regressive. Many geographically‐targeted and most means‐tested utility subsidies are progressive, but still exclude many poor households. Connection subsidies are an attractive alternative in low coverage areas, but they will only reach the poor if utilities extend network access to poor households and if households choose to connect.