Miracle-dz/UniFAR-FTUs huggingface dataset:
Large Format Digital Colour Holograms Produced using RGB Pulsed Laser Technology

David Brotherton-Ratcliffe* RGB Pulsed laser technology provides a natural way to circumvent the problems of vibration inherent in conventional CW holographic printer schemes. Using such technology we have been able to print 1-step dot-matrix digital holograms at speeds of up to 50 RGB colour pixels per second in relatively compact printer configurations. Typical hologram pixel sizes that have been employed are around 1mm diameter. Both full parallax and single parallax digital reflection holograms have been generated in this way with sizes of up to 1m x 1.5m. RGB transmission rainbow holograms have also been generated using this approach. Quicker generation of digital holograms is possible using a variety of 2-step pulsed laser printer schemes, the simplest of which consists of the contact or close copying of an original master dot-matrix hologram that has been specially processed. Other 2-step techniques such as H1:H2 schemes have required more powerful RGB pulsed lasers and yet have shown their capability of producing one-off smaller format holograms at high speed. * Geola Technologies Ltd * School of Engineering & Design, University of Sussex.
Spin qubit relaxation in a moving quantum dot

Long-range quantum communication for spin qubits is an important open problem. Here we study decoherence of an electron spin qubit that is being transported in a moving quantum dot. We focus on spin decoherence due to spin-orbit interaction and a random electric potential. We find that at the lowest order, the motion induces longitudinal spin relaxation, with a rate linear in the dot velocity. Our calculated spin relaxation time ranges from sub $\mu$s in GaAs to above ms in Si, making this relaxation a significant decoherence channel. Our results also give clear indications on how to reduce the decoherence effect of electron motion.
Temporally and spectrally multiplexed single photon source using quantum feedback control for scalable photonic quantum technologies

Current proposals for scalable photonic quantum technologies require on-demand sources of indistinguishable single photons with very high efficiency. Even with recent progress in the field there is still a significant gap between the requirements and state of the art performance. Here, we propose an on-chip source of time-multiplexed, heralded photons. Using quantum feedback control on a photon storage cavity with an optimized driving protocol, we estimate an on-demand efficiency of 99% and unheralded loss of order 1%, assuming high efficiency detectors and intrinsic cavity quality factors of order 108. We further explain how temporal- and spectral-multiplexing can be used in parallel to significantly reduce device requirements if single photon frequency conversion is possible with efficiency in the same range of 99%.
Effect of counter-rotating fan’s speed matching on stall inception and characteristics of tip clearance flow

In order to study the effect of speed matching on behavior of tip clearance flow and its possible link to stall inception in counter-rotating fan, the Reynolds-averaged Navier-Stokes equations are solved by the numerical method in conjunction with a SST turbulence model, the effect of speed matching on performance and stability margin are investigated, so are the difference of the tip clearance flow in different speed matching. Furthermore, the effect of speed matching on behavior of tip clearance flow and its possible link to stall inception are investigated. Research results show that: when the rotational speed of Rotor 2 is less than that of Rotor 1, with the decrease of rotational speed of Rotor 2 has no notable effect on tip clearance flow fields of the two rotors, therefore offset of stalling boundary is minor and strong blockage effect is observed in Rotor 1; when the rotational speed of Rotor 1 is less than that of Rotor 2, decrease of rotational speed of Rotor 1 show significant effect on the two rotors, which leads to major offset of stalling boundary, tip leakage flow performance of Rotor 1 improved, while that of Rotor 2 weakened and large blockage area occurs. By comparison, speed variation of Rotor 1 has more effect on stalling boundary of counter-rotating fan.
A deep geoelectric survey of the Carnmenellis granite

SUMMARY A magnetotelluric survey across the Carnmenellis granite, part of the Cornubian batholith of SW England, is described. The granite is being investigated with reference to the extraction of Hot Dry Rock geothermal energy. The sounding data are found to be influenced by near-surface static distortion which can be minimized by the construction of a granite-average sounding tensor. The anisotropy in the average tensor can be attributed to the spatial form of the granite. This is verified by 2-D modelling and the model results are used as control in the assessment of the vertical resistivity profile. The resistivity values obtained by the survey are found to correspond to a saturated ‘wet’ granite down to at least 10km. Despite the high geothermal gradient the anticipated decrease of resistivity with increasing temperature does not take place. Below a depth of just over 1 km, resistivity values are found to increase to a depth of about 6km. The results are compared with the laboratory-observed response of granite to increasing applied pressure and stress. The resistivity/depth section appears consistent with the completion of joint and crack closure by a depth of 7 km and a transfer to a pore-dominated resistivity mechanism below this depth. An electrical base to the granite is resolved at a depth of 14 km in accord with the depth to base adopted by regional gravity models.
Remeshing Visual Hull Approximation by Displaced Butterfly Subdivision Surfaces

This paper proposes a new procedure for generating a displaced butterfly subdivision surface from multiple images. First, point geometry of the target object is recovered by combining LDC(Layered Depth Cube) surfel sampling scheme with the concept of visual hull based on the input images. Then the subdivision surface is generated approximating to the recovered point cloud. We use a variant displaced subdivision scheme, where scalar displacement, in the direction of a local normal, is computed via the MLS(Moving Least Squares) approximation. The resulting subdivision surface is a mesh with subdivision connectivity providing a high-quality and efficient approximation to the given images. And it is able not only to repre sent a natural level of detail structure of the surface, but it is also to be memory-efficient by taking advantage of smoothness prope rties. Experimental results show the quality of our algorithm.
FineLine: log-structured transactional storage and recovery

Recovery is an intricate aspect of transaction processing architectures. In its traditional implementation, recovery requires the management of two persistent data stores—a write-ahead log and a materialized database—which must be carefully orchestrated to maintain transactional consistency. Furthermore, the design and implementation of recovery algorithms have deep ramiﬁcations into almost every component of the internal system architecture, from concurrency control to buﬀer management and access path implementation. Such complexity not only incurs high costs for development, testing, and training, but also unavoidably aﬀects system performance, introducing overheads and limiting scalability. This paper proposes a novel approach for transactional storage and recovery called FineLine. It simpliﬁes the implementation of transactional database systems by eliminating the log-database duality and maintaining all persistent data in a single, log-structured data structure. This approach not only provides more eﬃcient recovery with less overhead, but also decouples the management of persistent data from in-memory access paths. As such, it blurs the lines that separate in-memory from disk-based database systems, providing the eﬃciency of the former with the reliability of the latter.
Improved algorithm for quantum separability and entanglement detection

Determining whether a quantum state is separable or entangled is a problem of fundamental importance in quantum information science. It has recently been shown that this problem is NP-hard, suggesting that an efficient, general solution does not exist. There is a highly inefficient ``basic algorithm'' for solving the quantum separability problem which follows from the definition of a separable state. By exploiting specific properties of the set of separable states, we introduce a classical algorithm that solves the problem significantly faster than the ``basic algorithm,'' allowing a feasible separability test where none previously existed, e.g., in $3\ifmmode\times\else\texttimes\fi{}3$-dimensional systems. Our algorithm also provides a unique tool in the experimental detection of entanglement.
Impact of Milk Marketing Channel Choice Decision on Income, Employment and Breeding Technologies among Dairy Farmer Households in Kericho County, Kenya

The study examined the impact of milk marketing channel choice decisions on dairy farmer household income, employment and breed technologies among dairy farmer households in Kericho County. Data was collected from 432 dairy farmer households using multistage cluster sampling technique. Both primary and secondary data were used in the analysis. Processing and analysis of survey data was carried out using STATA version 12. Multivariate probit and propensity score matching was used in data analyse. Propensity score matching was also used to account for selection bias. Matching results show that the average effect of the farmer household that sold milk to commercial buyers had higher probability of obtaining Kenya shillings 16.00 per day as compared to households that did not sell milk to commercial buyer. While selling through commercial milk buyers had significant positive effect on farmer welfare, majority of dairy farmers were hesitant to engage with them. Milk buyers value security in supply which comes from trusted relationships and contracts. Establishing such relationships is in the long-term interest of the dairy farmer. Therefore, to improve farmer welfare, group formation and partnership development should be strengthened, milk cooperative societies needs to be bolstered and an increased financial investment in livestock markets by national and county governments.
High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). II. Lucky Imaging results from 2015 and 2016

The formation and dynamical history of hot Jupiters is currently debated, with wide stellar binaries having been suggested as a potential formation pathway. Additionally, contaminating light from both binary companions and unassociated stars can significantly bias the results of planet characterisation studies, but can be corrected for if the properties of the contaminating star are known. We search for binary companions to known transiting exoplanet host stars, in order to determine the multiplicity properties of hot Jupiter host stars. We also characterise unassociated stars along the line of sight, allowing photometric and spectroscopic observations of the planetary system to be corrected for contaminating light. We analyse lucky imaging observations of 97 Southern hemisphere exoplanet host stars, using the Two Colour Instrument on the Danish 1.54m telescope. For each detected companion star, we determine flux ratios relative to the planet host star in two passbands, and measure the relative position of the companion. The probability of each companion being physically associated was determined using our two-colour photometry. A catalogue of close companion stars is presented, including flux ratios, position measurements, and estimated companion star temperature. For companions that are potential binary companions, we review archival and catalogue data for further evidence. For WASP-77AB and WASP-85AB, we combine our data with historical measurements to determine the binary orbits, showing them to be moderately eccentric and inclined to the line of sight and planetary orbital axis. Combining our survey with the similar Friends of Hot Jupiters survey, we conclude that known hot Jupiter host stars show a deficit of high mass stellar companions compared to the field star population; however, this may be a result of the biases in detection and target selection by ground-based surveys.
Significance of diatom-derived polymers in carbon flow dynamics within estuarine biofilms determined through isotopic enrichment

Pennate diatoms are the main group of primary producers in transient microbial biofilms at the sediment surface in muddy intertidal systems. These microalgae produce a substantial quan- tity of extracellular polymeric substances (EPS) that contribute significantly to the cohesive proper- ties observed in biofilms. Changes in carbohydrate content and composition and the persistence of diatom EPS were demonstrated with pulse-chase NaH 13 CO3 labeling and simultaneous detection of isotopic enrichment in polysaccharides and phospholipid fatty acids (PLFAs) in Colne Estuary, UK, biofilms over a 48 h period. Significant isotopic enrichment of glucan indicated that a large propor- tion of fixed carbon was initially sequestered into intracellular chrysolaminaran, and labeled carbon was also quickly used for production of the diatom PLFA 20:5ω3 and EPS. Saccharides in the EPS fractions were enriched rapidly, followed by labeling of distinct bacterial PLFAs through hetero- trophic utilization of EPS within 4 h. Maximal isotopic enrichment of diatom and Gram-negative bac- terial PLFAs and hot water- and hot bicarbonate-soluble EPS fractions occurred after 4 h, and 13 C- labeling increased in Gram-positive bacterial PLFAs throughout the study period. After 48 h, PLFAs remained highly labeled relative to diatom-derived polysaccharides, indicating persistence of assim- ilated C in organisms within the biofilms through time and rapid turnover of polysaccharide pools within the biofilms. Coupled pulse-chase isotopic labeling and simultaneous tracking of 13 C in poly- saccharides and PLFAs directly demonstrated the flow of carbon between biofilm autotrophs and het- erotrophic bacteria and the significance of diatom-derived carbohydrates in this exchange.
Power-Constrained Edge Computing With Maximum Processing Capacity for IoT Networks

Mobile edge computing (MEC) plays an important role in next-generation networks. It aims to enhance processing capacity and offer low-latency computing services for Internet of Things (IoT). In this paper, we investigate a resource allocation policy to maximize the available processing capacity (APC) for MEC IoT networks with constrained power and unpredictable tasks. First, the APC which describes the computing ability and speed of a served IoT device is defined. Then its expression is derived by analyzing the relationship between task partitioning and resource allocation. Based on this expression, the power allocation solution for the single-user MEC system with a single subcarrier is studied and the factors that affect the APC improvement are considered. For the multiuser MEC system, an optimization problem of APC with a general utility function is formulated and several fundamental criteria for resource allocation are derived. By leveraging these criteria, a binary-search water-filling algorithm is proposed to solve the power allocation between local CPU and multiple subcarriers, and a suboptimal algorithm is proposed to assign the subcarriers among users. Finally, the validity of the proposed algorithms is verified by Monte Carlo simulation.
EVIDENCE THAT SALT WATER MAY NOT BE A BARRIER TO THE DISPERSAL OF ASIAN FRESHWATER CRABS (DECAPODA: BRACHYURA: GECARCINUCIDAE AND POTAMIDAE)

The true freshwater crabs are a strictly freshwater circumtropical group that is found throughout the inland waters of the continents as well as on numerous islands. We tested competing biogeographic hypotheses for how this distribution pattern arose. Vicariant explanations, based on the belief that true freshwater crabs are unable to tolerate exposure to high salinities, assume that stretches of seawater are signifi cant barriers to dispersal. Dispersalist explanations, based on phylogenetic and fossil evidence, assume that freshwater crabs are capable of at least limited trans-oceanic dispersal. We evaluated the physiological tolerance to sea water of two Thai freshwater crab species held for two weeks in either shallow or deep sea water. Both species survived in full-strength sea water for at least 14 days. Survival rates in high salinities were not affected by body size, gender, or whether crabs were fully or partially submerged. Although freshwater crabs are never found naturally in any aquatic saltwater ecosystem, physiologically they are euryhaline osmoregulators that do not die immediately in full-strength sea water. These strictly freshwater decapods can survive in sea water for long enough to disperse across at least short distances between continents and islands. Our fi ndings support dispersalist rather than vicariant explanations for present-day freshwater crab distribution patterns.
Adaptive lenses based on polarization modulation

We present and demonstrate a technique for producing a high-speed variable focus lens using a fixed birefringent lens and a ferroelectric liquid crystal cell as a polarization switch. A calcite lenses with ordinary and extraordinary focal lengths of 109mm and 88mm respectively, was used to demonstrate focus switching at frequencies of up to 3kHz. Two identical lenses and a single liquid crystal were also used to demonstrate zoom.
N ov 2 01 2 Holography for inflation using conformal perturbation theory

We provide a precise and quantitative holographic description of a class of inflationary slow-roll models. The dual QFT is a deformation of a three-dimensional CFT by a nearly marginal operator, which, in the models we consider, generates an RG flow to a nearby IR fixed point. These models describe hilltop inflation, where the inflaton rolls from a local maximum of the potential in the infinite past (corresponding to the IR fixed point of the dual QFT) to reach a nearby local minimum in the infinite future (corresponding to the UV of the dual QFT). Through purely holographic means, we compute the spectra and bispectra of scalar and tensor cosmological perturbations. The QFT correlators to which these observables map holographically may be calculated using conformal perturbation theory, even when the dual QFT is strongly coupled. Both the spectra and the bispectra may be expressed this way in terms of CFT correlators that are fixed, up to a few constants, by conformal invariance. The form of slow-roll inflationary correlators is thus determined by the perturbative breaking of the de Sitter isometries away from the fixed point. Setting the constants to their values obtained by AdS/CFT at the fixed point, we find exact agreement with known expressions for the slow-roll power spectra and non-Gaussianities.
A Study of Gene-Environment Interactions In Entrepreneurship

We examined the interactions between four genes associated with dyslexia (ROBO1, KIAA0319, DCDC2, DYX1C1) and education on the tendency to become an entrepreneur. We used a two-staged design consisting of a discovery sample of 692 individuals, and a replication sample of 797 participants from the TwinsUK cohort. Associations were identified between entrepreneurship and interactions of education and ROBO1 rs654867 and KIAA0319 rs6902039 with the stage 1 samples. However these were not independently replicated and the associations were no longer significant when the samples from the 2 stages were combined. A tagging SNP approach was used to investigate the effect of the interactions between education and 191 tagging SNPs from the candidate genes on entrepreneurship. While we found several significant interactions (DCDC2, KIAA0319 and ROBO1), none passed the stringent threshold for significance of a Bonferroni correction. Similar to the case with other behavioural genetics phenotypes, large sample sizes will be required to identify significant gene-environment interactions in entrepreneurship after making Bonferroni corrections.
Ayahuasca Modifies Amphetamine Self Ingestion and ModifiesAnxiety and Locomotor Activity in Adolescent Rats

Several reports indicate that the hallucinogen beverage better known as Ayahuasca (AYA) may be utilized for the recuperation of drug abusers. However, there is a lack of scientific evidence for this idea, which led us to use laboratory animals to test it. Amphetamine (AMPH), a substance globally abused principally amongst adolescents, is known to have a high potential to lead to addiction, anxiety, and increases in locomotor activity. The objective of the present work was to experimentally evaluate whether AYA is capable of modifying the self ingestion and behavioral effects caused by AMPH. Adolescent rats were trained to ingest water or AMPH solution (0.6 mg/ml) during a 13 days period, in the absence or presence of AYA treatment (2 ml/kg, gavage). 24 h after the last day of treatment, the rats’ locomotor activity and anxiety behaviors were evaluated using an open field arena (OF) and an elevated plus maze (EPM) apparatus. We observed that the animals have a preference for drinking AMPH, and that AYA prevents this preference. In the EPM tasks, AYA treatment significantly decreased the rise in the percentage of closed arm entries caused by AMPH treatment. In the OF tasks, AYA normalized the hyper-locomotor effect of AMPH, as well as the higher latency to cross the central part of arena and the lower number of center crossings in the arena. Taken together, our findings together indicate that AYA is able to modify AMPH ingestion and its effects. In conclusion, this work presents scientific evidence that ayahuasca can be beneficial for drug abuse users.
Technological Rules Based Business Models Analysis: A Design Science Approach

This paper introduces a trend in management research recently, which is attempting to adopt a design science approach when solving the relevance problem of academic management research. Building on the related literature in design science we propose an exploratory framework based on technological rules for the research in the field of business models and give a detail of the constructing factors for a business model. We then analyze the fitness between a business model and its external environment using this research framework and get conclusions.
The Regeneration of the Siphons of Ciona Intestinalis L.

Regeneration of the siphons of normal specimens Ciona intestinalis has been found to be completed, in every particular other than that of length, in 4 days. Removal of the neuroglandular complex retards the regeneration rate. With the exception of the epidermis and of the basic tunic, the new structures differentiate from haemoblasts. A tentative synthesis has been made of the information available upon asexual reproduction and regeneration in the Ascidiaceae.
Poverty and Income Seasonality in Bangladesh

Seasonal poverty in Bangladesh, locally known as monga, refers to seasonal deprivation of food during the pre-harvest season of Aman rice. An analysis of household income and expenditure survey data shows that average household income and consumption are much lower during monga season than in other seasons, and that seasonal income greatly influences seasonal consumption. However, lack of income and consumption smoothing is more acute in greater Rangpur, the North West region, than in other regions, causing widespread seasonal deprivation. The analysis shows that agricultural income diversification accompanied by better access to micro-credit, irrigation, education, electrification, social safety net programs, and dynamic labor markets has helped reduce seasonality in income and poverty in regions other than Rangpur in the recent past. Hence, government policies should promote income diversification through infrastructure investments and provide income transfers to the targeted poor to contain income seasonality and poverty in this impoverished part of Bangladesh.