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The aim of this paper is to find suitable measures that facility managers can use to prove the importance of a building for employee behaviour (and thus organizational performance). The amount of knowledge sharing between colleagues is studied, because it influences innovation, which is one of the most important organizational goals these days.

Knowledge sharing in open plan areas is studied with the help of measures derived from spatial network analysis methods. Data were collected from 138 employees working together in a research building and used to show the effect of co‐presence on the amount of knowledge sharing and the way knowledge is shared.

Co‐presence explains 12 percent of the variability in the number of knowledge‐sharing meetings. Also the way knowledge is shared differs between people working in co‐presence and people who have separate rooms/areas. Spatial network analysis is an adequate way to describe open plan workplaces.

Previous studies do not define openness in such a way that different open plan layouts can be assessed and compared. This is necessary for facility managers to make grounded decisions. This paper applies a new methodology for these types of studies. Also it studies the effect of facilities on actual knowledge‐sharing activities, and not just on interactions between people.

In the 1947 article, The Mathematics of the Ideal Villa, Colin Rowe famously compared the spatial and geometric properties of buildings by two architects: Palladio and Le Corbusier. Many of Rowe's observations in this article have since been extensively debated but not rigorously tested. This paper examines Rowe's proposition that Palladio's villa plans possess greater intelligibility and cellularity than Le Corbusier's villa plans.

Two established computational techniques, axial line analysis and isovist analysis, are adopted in this paper to quantify and compare the properties of intelligibility and cellularity in the four villas that Rowe used to construct his argument: Malcontenta, Rotunda, Stein, and Savoye.

While acknowledging methodological limitations, the results of this paper do not support Rowe's claims, but they do lead to a unique quantitative examination of spatial configurations and properties of four famous villa plans.

This is the first paper to quantitatively examine Rowe's claims that Palladian villas possess greater intelligibility and cellularity than Le Corbusier's villas.

This paper aims to present a comprehensive review in major research areas of unmanned air vehicles (UAVs) navigation, i.e. three degree-of-freedom (3D) path planning, routing algorithm and routing protocols. The paper is further aimed to provide a meaningful comparison among these algorithms and methods and also intend to find the best ones for a particular application.

The major UAV navigation research areas are further classified into different categories based on methods and models. Each category is discussed in detail with updated research work done in that very domain. Performance evaluation criteria are defined separately for each category. Based on these criteria and research challenges, research questions are also proposed in this work and answered in discussion according to the presented literature review.

The research has found that conventional and node-based algorithms are a popular choice for path planning. Similarly, the graph-based methods are preferred for route planning and hybrid routing protocols are proved better in providing performance. The research has also found promising areas for future research directions, i.e. critical link method for UAV path planning and queuing theory as a routing algorithm for large UAV networks.

The proposed work is a first attempt to provide a comprehensive study on all research aspects of UAV navigation. In addition, a comparison of these methods, algorithms and techniques based on standard performance criteria is also presented the very first time.

Corporations balancing real estate holding (CRE) costs with recruitment-retention increasingly use activity-based flexible offices (AFO) to right-size environments for a mobile workforce. In this layout, workers have the option to select between a mix of unassigned workstations and alternative work settings (AWS) that support autonomy and mobility. The open layout encourages visibility and access to colleagues to enhance communication and collaboration. Nevertheless, studies into the effects of AFO environment attribute effects on worker needs and work outcome are sparse. Therefore, this study aims to focus on understanding how environmental features and psychological or job needs impact observed and perceived satisfaction, communication, collaboration and perceived productivity.

Data were collected in a case organization piloting an AFO before implementation across their CRE portfolio. A mixed-methods approach was used, including systematic observations, space syntax and surveys collecting information on the observed and perceived satisfaction, communication, collaboration and productivity.

Collaboration instances were higher in AWS, especially more visible and accessible open areas, supporting higher impromptu interactions and enhanced perceptions of productivity of team members and cross-team members. Privacy requirements linked to a greater demand for enclosed AWS. Team communication satisfaction depended on how easily teams were located. Almost half of the user teams clustered within workstation zones corresponding to territoriality needs. Job autonomy satisfaction depended on the availability of preferred workstation or AWS, enabling private, uninterrupted work that enhanced perceived productivity.

The case study findings indicated a correlation between the AFO environment and worker needs impacting workplace satisfaction, communication, collaboration and perceived productivity.

The findings form this case study indicated that a fit between the AFO environment and needs impacted workplace satisfaction, communication, collaboration and perceived productivity.

This paper aims to present an integrative review of the research studies on nursing unit layouts.

Studies selected for review were published between 1956 and 2014. For the purpose of this review, a framework for integrative review was developed using research orientations. The three primary dimensions – technical, psychological and social – of the designed environment and various combinations of these dimensions were used to define the research orientations of these studies.

Of all the publications reviewed for the paper, 21 presented technical orientations, 16 psychological orientations, 3 social orientations, 20 psychotechnical orientations, 10 sociotechnical orientations, 2 psychosocial orientations and 13 presented psychosociotechnical orientations. With only a few exceptions, several issues related to nursing unit layouts were investigated no more than one time in any one category of research orientations. Several other seemingly important issues including patient and family behavior and perception, health outcomes and social and psychosocial factors in relation to unit layouts have not been studied adequately.

Future studies on nursing unit layouts will need to focus on patient and family behavior and perception, health outcomes and social and psychosocial factors in different units. They will also need to focus on developing theories concerning the effects of layouts on the technical, psychological and social dimensions of nursing units.

Despite a long history of research on nursing unit layouts, an integrative review of these studies is still missing in the literature. This review fills in the gap using a novel framework for integrative review developed based on research orientations.

In response, this study developed a mathematical and computational method, through spatial configurations with justified plan graph (JPG), drawn from Space Syntax to extract essential information of the spatial topology of 13 valuable traditional courtyard houses located in Toon historical city of Iran.

Historical vernacular housing has always been designed to incorporate and reflect the local lifestyle and cultural conditions. “Courtyard” is a fundamental part of traditional Iranian houses. This traditional building type includes a walled boundary and a complex of open, semi-enclosed and enclosed spaces. This study investigates the traditional houses in Toon historical town. Toon is one of the ancient towns in southeast Iran, including old courtyard houses in its heritage context. The spatial influence of the courtyard contributes to the formation of this famous architectural type.

The results show the remarkable impact of this space on dominating the plan of traditional Toon houses configuration compared to other spaces in all cases. Furthermore, spatial accessibility has changed over time, and the Safavid period had a higher level of integration and lower level of accessibility (mean i = 7.03) rather than the Qajar period (mean i = 6.34); also, privacy has decreased progressively.

The knowledge of characteristics of this historical architecture needs to be gathered for the preservation and conservation of the built heritage. Hence, the principle behind traditional Iranian courtyards was investigated to recognize the difference between the spatial influence of the courtyard and other spaces and the changes in the courtyard over time.

The aim of this research is to provide a new understanding of the concept of visibility in the realm of property research. Further, this study could propose a more accurate way of calculating retail unit rental price based on visibility. An accurate visibility quantification can influence rent negotiations between shopping mall management and potential tenants. This study can also assist shopping center management, shop owners and architects to have a better mechanism for determining the visibility value and the effect on the retail unit rental price.

The study uses data from 153 indoor retail stores in Jakarta and a sequential-transformative mixed method to answer an important question for modern retail management: How much would indoor store visibility affect rent? The authors developed a method to accurately measure an indoor retail store's object-based isovist – a visual field in which a number of observers can view the particular indoor store.

The study found that on average, each additional square meter person of visibility increases indoor retail rent price as much as IDR 40.74/sq m/month (USD 0.0027). Since visibility value is a variable with the greatest inter-store variation in this data set, the rent price difference between two stores with maximum and minimum visibility can reach IDR 100,904.62/sq m/month (USD 6.90). This finding is not just statistically but also financially significant since indoor inter-store retail rent price variation that can be directly attributed to visibility is about 38.4% of the average rent price in this data set.

Along with the rapid growth of e-commerce, numerous commercial properties are struggling to provide customers with a positive and distinct experience. Improving visibility can be a key spatial factor that will help shopping center designers, owners and management. The authors’ research can help shopping mall managers determine each store's optimum rent based on its visibility when negotiating with potential tenants.

The aim of this research is to provide a new understanding of the concept of appearance in the realm of property research. Further, this study could propose a more accurate way of calculating retail unit rental price according to the concept of visibility.

This research study aims to explore sociocultural factors such as privacy and gender segregation as they relate to the spatial perception of women's spaces within the vernacular Qatari household, and the activities, habits and practiced culture of its inhabitants.

This analysis utilizes the Space Syntax methodology to examine a sample of vernacular courtyard houses with respect to space connectivity, conducting an analytical exploration of the role of women based on the system of activities.

The findings shed light on the spatial complexity and sensitivity of the Qatari household as it reflects the prevailing sociocultural imperatives in Qatari urbanities, including the country's capital, Doha.

This research study thus reinforces the importance of traditional residential architecture in conserving Qatar's distinctive architectural identity, rooted in its sociocultural attributes.

Sociocultural features such as privacy and gender segregation are among the most prominent factors influencing the spatial form of vernacular courtyard houses in the Arabian Gulf country of Qatar.

It is argued that within a typical vernacular Qatari household, women's spaces are the least connected (most segregated) areas, due mainly to the influence of privacy norms and gender segregation on the spatial configuration of the house.

The world’s urban population is rapidly growing, now exceeding its rural population, and is expected to reach 70% of the world’s total by 2050. Research in environmental psychology increasingly supports the Biophilia Hypothesis which holds that our connection with Nature is innate. Thus, how do we maintain a human connection to Nature in an increasingly urbanising world? This paper is based on current research work and explores the boundary between built and natural environments, specifically how visual connectivity to Nature affects how people use social spaces, compared to spatial connectivity. Case study work is being undertaken at Arcosanti urban laboratory in the Arizona desert. Arcosanti construction began in 1970 to test Paolo Soleri’s Arcology Theory which proposes, in opposition to sprawling cities, a new form of urban setting which is compact with tightly restricted horizontal growth, leaving the surrounding natural environment as undeveloped “wilderness”. Through development of a Space/Nature Syntax methodology applied within a uniquely compact urban form, this research attempts to understand how designing to maintain the instinctive bond with Nature can affect social interaction and inform future design choices within built environments. This paper describes the development of, and basis for, the Space/Nature Syntax methodology, presents initial findings achieved through its recent application at Arcosanti, and outlines future work. Initial analysis indicates that visual connectivity to Nature is a significant influence on certain types of social interactions when compared to spatial connectivity, although more research is needed to verify the level of significance.

Autonomous obstacle avoidance is important in unmanned surface vehicle (USV) navigation. Although the result of obstacle detection is often inaccurate because of the inherent errors of LIDAR, conventional methods typically emphasize on a single obstacle-avoidance algorithm and neglect the limitation of sensors and safety in a local region. Conventional methods also fail in seamlessly integrating local and global obstacle avoidance algorithms. This paper aims to present a cooperative manoeuvring approach including both local and global obstacle avoidance.

The global algorithm used in our USV is the Artificial Potential Field-Ant Colony Optimization (APF-ACO) obstacle-avoidance algorithm, which plans a relative optimal path on the specified electronic map before the cruise of USV. The local algorithm is a multi-layer obstacle-avoidance framework based on a single LIDAR to present an efficient solution to USV path planning in the case of sensor errors and collision risks. When obstacles are within a layer, the USV uses a corresponding obstacle-avoidance algorithm. Then the USV moves towards the global direction according to fuzzy rules in the fuzzy layer.

The presented method offers a solution for obstacle avoidance in a complex environment. The USV follows the global trajectory planed by the APF-ACO algorithm. While, the USV can bypass current obstacle in the local region based on the multi-layer method effectively. This fact was validated by simulations and field trials.

The method presented in this paper takes advantage of algorithm integration that remedies errors of obstacle detection. Simulation and experiments were also conducted for performance evaluation.