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This study aims to fabricate and manipulate ensemble spin of negative nitrogen-vacancy (NV⁻) centres optimally for future solid atomic magnetometers/gyroscope. Parameters for sample preparation most related to magnetometers/gyroscope are, in particular, the concentration and homogeneity of the NV⁻ centres, the parameters’ microwave antenna of resonance frequency and the strength of the microwave on NV⁻ centres. Besides, the abundance of other impurities such as neutral NV centres (NV⁰) and substitutional nitrogen in the lattice also plays a critical role in magnetic sensing.

The authors succeeded in fabricating the assembly of NV centres in diamond and they determined its concentration of (2-3) × 10¹⁶ cm⁻³ with irradiation followed by annealing under a high temperature condition. They explored a novel magnetic resonance approach to detect the weak magnetic fields that takes advantage of the solid-state electron ensemble spin of NV⁻ centres in diamond. In particular, the authors set up a magnetic sensor on the basis of the assembly of NV centres. They succeeded in fabricating the assembly of NV centres in diamond and determined its concentration. They also clarified the magnetic field intensity measured at different positions along the antenna with different lengths, and they found the optimal position where the signal of the magnetic field reaches the maximum.

The authors mainly reported preparation, initialization, manipulation and measurement of the ensemble spin of the NV centres in diamond using optical excitation and microwave radiation methods with variation of the external magnetic field. They determined the optimal parameters of irradiation and annealing to generate the ensemble NV centres, and a concentration of NV⁻ centres as high as 10¹⁶ cm⁻³ in diamond was obtained. In addition, they found that sensitivity of the magnetometer using this method can reach as low as 5.22 µT/Hz currently.

This research can shed light on the development of an atomic magnetometer and a gyroscope on the basis of the ensemble spin of NV centres in diamond.

High concentration spin of NV⁻ in diamond is one of the advantages compared with that of the atomic vapor cells, because it can obtain a higher concentration. When increasing the spin concentration, the spin signal is easy to detect, and macro-atomic spin magnetometer become possible. This research is the first step for solid atomic magnetometers with high spin density and high sensitivity potentially with further optimization. It has a wide range of applications from fundamental physics tests, sensor applications and navigation to detection of NMR signals.

As has been pointed out, in this research, the authors mainly worked on fabricating NV⁻ centres with high concentration (10¹⁵-10¹⁶ cm⁻³) in diamond by using optimal irradiation and annealing processes, and they quantitatively defined the NV⁻ concentration, which is important for the design of higher concentration processes in the magnetometer and gyroscope. Until now, few groups can directly define the NV⁻ concentration. Besides, the authors optimized the microwave antenna parameters experimentally and explored the dependence between the splitting of the magnetic resonance and the magnetic fields, which dictated the minimum detectable magnetic field.

Increasingly 3D printing is used for parts of garments or for making whole garments due to their flexibility and comfort and for functionalizing or enhancing the aesthetics of the final garment and hence adding value. Many of these applications rely on complex programming of the 3D printer and are usually provided by the vendor company. This paper introduces a simpler, easier platform for designing 3D-printed textiles, garments and other artifacts, by predicting the optimal orientation of the target objects to minimize the use of plastic filaments.

The main idea is based on the shadow-casting analogy, which assumes that the volume of the support structure is similar to that of the shadow from virtual sunlight. The triangular elements of the target object are converted into 3D pixels with integer-based normal vectors and real-numbered coordinates via vertically sparse voxelization. The pixels are classified into several groups and their noise is suppressed using a specially designed noise-filtering algorithm called slot pairing. The final support structure volume information was rendered as a two-dimensional (2D) figure, similar to a medical X-ray image. Thus, the authors named their method modified support structure tomography.

The study algorithm showed an error range of no more than 1.6% with exact volumes and 6.8% with slicing software. Moreover, the calculation time is only several minutes for tens of thousands of mesh triangles. The algorithm was verified for several meshes, including the cone, sphere, Stanford bunny and human manikin.

Simple hardware, such as a CPU, embedded system, Arduino or Raspberry Pi, can be used. This requires much less computational resources compared with the conventional g-code generation. Also, the global and local support structure is represented both quantitatively and graphically via tomographs.

A simple matric formulation is developed for calculating the elastic buckling of a class of simply supported flat plates that arc simultaneously tapered in plan form and in thickness in one direction and subjected to biaxial loading that varies in each direction. Design curves are presented for the special case when the thickness taper is linear and the plate material is equally stressed in the direction of this thickness taper.

Since the beginning of the 1980s, a growing number of cities around the world have been looking to invest in extensive city-reimaging and place-marketing initiatives in efforts to announce themselves or to raise their profiles on the tourism market. In either case, the objective is to facilitate economic growth in times of rising importance of the service sector, of which tourism is widely seen as one of the most lucrative areas since it helps attract new investors, generate more revenue, and create additional jobs. It is in pursuit of such economic benefits that government officials, policy-makers, urban-planning agencies, land developers, and other private stakeholders have been coming together to identify potential urban precincts within cities, before transforming these precincts into art and cultural districts, often home to at least one visually striking art museum or a performing arts center – almost always designed by an elite band of celebrity architects. Fully or partially funded by taxpayer money, these signature art museums and performing arts centers are conceptualized and built as icons of the city, and as objects of the tourist gaze, with little or no interest in the physical and environmental peculiarities of place and with little or no regard for local residents including local artists and cultural producers. Traveling from Bilbao in Spain to Bhopal in India, this chapter expands on some of the events that led to an outburst of formally overstated and spatially exclusive venues of art and culture in the last two decades, before sharing some thoughts and restarting conversations on reclaiming and reimagining these venues as open, inclusive, and pulsating public spaces embedded in the actual fabrics of cities, at once accessible to locals and tourists.

This mainly exploratory study was a one‐point‐in‐time survey of the situation in one English county. This study involved a survey of all social care homes in the county, followed by measures of quality of life/service for a random sample of 30 people identified by the survey, interviews with home managers, service users, family carers and care managers, and focus groups with members of four community learning disability teams. The total number of people placed from out‐of‐area was estimated to be close to 2,000 (1,500 were placed by the local authority within the county). The main reason for such placements was lack of good local services, but cost also seemed important. For many of those who had been in long‐stay hospital, locality appeared not to be important. Effects varied, but at least a third of people were experiencing very poor service quality and quality of life. Family carers generally felt their relative was happy, but fear of losing the placement was a strong theme. Distance was a major difficulty for both family and care manager involvement. For local community learning disability teams, the main problems included increased workload, reduced provision for local residents, difficulty in dealing with placing authority and the poor quality of the homes. Challenges for public agencies include provision of better local services, management of the cost incentives, especially for London Boroughs, and a system where funding follows the person wherever they chose to live.

The purpose of this paper is to discuss the application of documentation and recording techniques for World Heritage conservation using the case studies of the Petra Archeological Park (PAP) in Jordan and the Silk Roads Cultural Heritage Information System (CHRIS) in Central Asia. In the PAP case study, these techniques could aid in the assessment of risks faced by World Heritage properties and threats to the integrity of the Outstanding Universal Values (OUV). With respect to the Silk Roads CHRIS case study the Geospatial Content Management System (Geo‐CMS) proposed aims to improve information management and collaboration among all stakeholders.

Integrated surveying techniques and information management systems together with active stakeholder participation can be used as conservation and management tools. In the case of PAP, using a systematic documentation tool (MEGA‐J) to conduct site condition and risk assessment of cultural heritage and combining photographs, maps and GPS measurements within a GIS platform allows for identifying the location and intensity of risks, and the degree of vulnerability within the PAP boundaries and buffer zone. In the Silk Roads CHRIS project the Geo‐CMS brings together data from different fields, e.g. geography, geology, history, conservation, to allow for a holistic approach towards documentation, protection and management of a number of diverse sites to be combined in serial transnational World Heritage.

The study provides insight into how digital technologies can aid in heritage documentation and conservation, including stakeholder involvement and training. Moreover, by means of the two case studies it can be shown that a combination of digital technologies allows for an efficient mapping of buffer zones and risks and how a Geo‐CMS can form a common platform to manage large quantities of information of different origin and make it accessible to stakeholders in transnational projects.

This paper discusses the use of digital technology and the participation of stakeholders in heritage conservation and documentation when dealing with complex World Heritage properties, e.g. serial transnational and archaeological ensembles at high risk.

Singapore is transforming from a “garden city” to a “city‐in‐a‐garden”. Designing for safety is recognized by researchers and some governments as a best practice in facilitating eventual worker safety within the built environment. The purpose of undertaking this research was to understand and describe the status of safe design for skyrise greenery in Singapore.

A total of 41 rooftop and vertical greenery systems were observed with a focus on access, fall from height, and planting considerations.

Rooftop greenery systems in Singapore were found to be adhering to safe design principles. Vertical and ledge greenery systems, on the other hand, are newer arrangements and were found to be in need of design for safety guidance.

The results add to the body of knowledge in the area of safe design and skyrise greenery and will aid those seeking to understand from a policy and practice perspective.

IN wishing all our readers happiness and prosperity throughout 1973 we are very conscious of the fact that it is a climateric year for the people of these islands. As these words are read we shall be a part of the European Economic Community.