Miracle-dz/UniFAR-FTUs huggingface dataset:
Amortised MAP Inference for Image Super-resolution

Image super-resolution (SR) is an underdetermined inverse problem, where a large number of plausible high-resolution images can explain the same downsampled image. Most current single image SR methods use empirical risk minimisation, often with a pixel-wise mean squared error (MSE) loss. However, the outputs from such methods tend to be blurry, over-smoothed and generally appear implausible. A more desirable approach would employ Maximum a Posteriori (MAP) inference, preferring solutions that always have a high probability under the image prior, and thus appear more plausible. Direct MAP estimation for SR is non-trivial, as it requires us to build a model for the image prior from samples. Furthermore, MAP inference is often performed via optimisation-based iterative algorithms which don't compare well with the efficiency of neural-network-based alternatives. Here we introduce new methods for amortised MAP inference whereby we calculate the MAP estimate directly using a convolutional neural network. We first introduce a novel neural network architecture that performs a projection to the affine subspace of valid SR solutions ensuring that the high resolution output of the network is always consistent with the low resolution input. We show that, using this architecture, the amortised MAP inference problem reduces to minimising the cross-entropy between two distributions, similar to training generative models. We propose three methods to solve this optimisation problem: (1) Generative Adversarial Networks (GAN) (2) denoiser-guided SR which backpropagates gradient-estimates from denoising to train the network, and (3) a baseline method using a maximum-likelihood-trained image prior. Our experiments show that the GAN based approach performs best on real image data. Lastly, we establish a connection between GANs and amortised variational inference as in e.g. variational autoencoders.
Repeated Computed Tomography in Lacunar Infarcts of the Brain

This prospective and consecutive study of 74 patients with completed stroke elucidates occurrence, localization and evolution of lacunar infarcts on repeated CT examinations. Twenty patients had large infarcts (diameter >3 cm), 25 medium-sized infarcts (diameter ≥1.5 cm – ≤ 3 cm), and 16 had lacunar infarcts (diameter <1.5 cm). In 13 patients no infarct was seen. The lacunar infarcts were characterized by delayed appearance on CT, low incidence of fog effect, and infrequent presence of contrast enhancement. In 9 of the 16 patients (56%) the lacunar infarct could be identified on the first CT, performed approximately 3 days after the stroke. In 2 patients the infarct was first revealed on the second (2 weeks post stroke) and in 5 on the third CT (6 months post stroke). The delayed appearance might be due to a partial volume effect. Early development of fog effect may also be considered. As contrast enhancement was observed in only 8 per cent of the patients with lacunar infarcts on CT, and in 70 per cent of the entire group of patients in our series with ischemic infarcts, contrast enhancement seemed to be a function of lesion size.
Success for All: Evaluating an Early-Intervention Program for Children at Risk of School Failure.

We examined the implementation of an early-intervention program called Success for All in Montreal, Quebec. Our study included 425 high-poverty students at risk for drop-out, from four elementary schools. The program was implemented in an inner-city school where 40% of the students had special needs, due particularly to learning disabilities. We analyzed data for 128 experimental and 136 control participants using the PPVT-R, Woodcock, and Durrell reading measures and a self-concept measure. Regular students from the experimental program performed significantly better than control students on the Word Attack and Word Identification subtests of the Woodcock reading measures, as well as on the Durrell measure. Special-needs students in the experimental program performed significantly better on Word Attack and Word Identification than did their peers in the control schools. There were no significant differences in self-concept.
Spatial disparity dynamics of ecosystem service values and GDP in Shaanxi Province, China in the last 30 years

The regional policy in China is shifting from solely gross domestic product (GDP) orientation to development that is more balanced between economic growth and ecological protection, as well as achieving equality among regions. Using land use maps and the adjusted value coefficients to assess ecosystem service values (ESV) for the 1980s, 1995, 2000, and 2010, we estimated the ESV in Shaanxi Province for different years, and characterized the spatial and temporal distribution of ESV and GDP. The results demonstrated that the total value of ecosystem services in Shaanxi Province increased from 208.95 billion Yuan in the 1980s to 309.76 billion Yuan in 2010. Variation Coefficient (Cv) and Theil index (T) were used to reflect the disparities of GDP or ESV within the study area. The values of Cv in descending order are GDP, ESV per capita, ESV, and GDP per capita. The Theil indexes of GDP were much greater than the ones of ESV. Variations of Cv and T showed that disparity in GDP kept increasing from the 1980s to 2000, then decreased; while no significant change in regional disparity of ESV were detected in parallel. The cities with higher GDP usually contributed little to ESV, and vice versa. The variation in GDP and ESV, in terms of the prefectural totals and per capita values, increased from the 1980s to 2010. This study provides an accessible way for local decision makers to evaluate the regional balance between economic growth and ecosystem services.
Estimation of macro sleep stages from whole night audio analysis

During routine sleep diagnostic procedure, sleep is broadly divided into three states: rapid eye movement (REM), non-REM (NREM) states, and wake, frequently named macro-sleep stages (MSS). In this study, we present a pioneering attempt for MSS detection using full night audio analysis. Our working hypothesis is that there might be differences in sound properties within each MSS due to breathing efforts (or snores) and body movements in bed. In this study, audio signals of 35 patients referred to a sleep laboratory were recorded and analyzed. An additional 178 subjects were used to train a probabilistic time-series model for MSS staging across the night. The audio-based system was validated on 20 out of the 35 subjects. System accuracy for estimating (detecting) epoch-by-epoch wake/REM/NREM states for a given subject is 74% (69% for wake, 54% for REM, and 79% NREM). Mean error (absolute difference) was 36±34 min for detecting total sleep time, 17±21 min for sleep latency, 5±5% for sleep efficiency, and 7±5% for REM percentage. These encouraging results indicate that audio-based analysis can provide a simple and comfortable alternative method for ambulatory evaluation of sleep and its disorders.
Are Work-Integrated Learning (WIL) Students Better Equipped Psychologically for Work Post-Graduation than Their Non-Work-Integrated Learning Peers? Some Initial Findings from a UK University.

Work-integrated learning (WIL) provides an opportunity to develop the skills, knowledge, competence, and experience, which increase employability and lead to more satisfying careers. Research indicates that WIL results in improved academic- and occupationally-related outcomes. However, there is a paucity of quantitative research examining the psychological impact of WIL. The study aimed to determine whether students who pursue WIL in the UK, differ significantly in terms of self-concept, self-efficacy, hope, study skills, motivation, and procrastination than students who have not participated in WIL. The methodology used a cross-sectional analysis of a large sample (n=716) of undergraduate students at the University of Huddersfield, UK. Results showed significant differences predominantly centred upon measures which pertain to students’ confidence in setting and attaining goals. The increased hope and confidence in goal attainment suggest that gaining work experience perhaps enhances the ability to set and achieve goals once in the work force. (Asia-Pacific Journal of Cooperative Education, 2013, 14(2), 117-125) Keywords: Employability; Psychological factors; Work-integrated learning; Placement; Confidence; Self esteem
Incidence and thickness of primary tumours and survival of patients with cutaneous malignant melanoma in relation to socioeconomic status

Abstract Objective: To study incidence of and survival from cutaneous malignant melanoma in relation to socioeconomic status. Design: Application of Carstairs deprivation score to all malignant melanoma patients diagnosed in a geographically defined area over a 15 year period. Setting: West of Scotland (area population 2 716 900). Subjects: 3142 patients first diagnosed with malignant melanoma in the period 1979-93. Interventions: Surgical excision of primary malignant melanoma with additional treatment as appropriate and follow up until December 1994. Main outcome measures: Malignant melanoma incidence, primary tumour thickness and five year survival by socioeconomic status Results: From 1979 to 1993, the age standardised incidence rate for cutaneous malignant melanoma was 9.1/100000 for the most affluent men and 2.4/100000 for the least affluent men and 16.1/100000 and 5.0/100000 respectively for most and least affluent women (P<0.001 for trend in both). The incidence increased steadily over time in both sexes in all socioeconomic groups. Good prognosis tumours (<1.5 mm thick) were most common in the most affluent men and women, and over the study period the proportion of such tumours increased most in the intermediate affluence group (both sexes) and in the least affluent women. Five year disease free survival from melanoma for the sexes combined was 81% for most affluent, 77% for intermediate, and 73% for least affluent groups. Even after adjustment for known prognostic factors of tumour thickness, ulceration, age, and body site of primary melanoma, the more affluent the group, the better the survival. Conclusion: Although the incidence of cutaneous malignant melanoma is higher among more affluent people, the prognosis is better in this group than for less affluent individuals. Early diagnosis campaigns should be targeted particularly to less affluent men and primary prevention campaigns should emphasise the greater risk in more affluent women. Key messages Key messages Paradoxically, five year disease free survival prospects are better for affluent people Variations in incidence could be explained by differences in sun exposure related to socio- economic status Variations in nutrition and possibly immune function by socioeconomic status could explain survival differences In public education campaigns, deprived men should be targeted to encourage earlier diagnosis Primary prevention campaigns should be tar- geted to more affluent socioeconomic groups
The Association Between Six Surrogate Insulin Resistance Indexes and Hypertension: A Population-Based Study.

Background: The relationship between insulin resistance and hypertension is well established, but the association of different surrogate insulin resistance indexes with the presence of hypertension is still under debate. The aim of this study was to compare the strength of the association between the presence of hypertension and six indexes: triglyceride/HDL cholesterol ratio (TG/HDL-C), Triglyceride Glucose (TyG) Index, Visceral adiposity index (VAI), Lipid accumulation product (LAP), TyG-Body mass index (TyG-BMI), and TyG-Waist circumference (TyG-WC). Methods: Data from a cross-sectional epidemiological study enrolling a sample representative for the Romanian population aged 18-80 years, excluding those with diabetes or requiring treatment for hypertriglyceridemia, were used to calculate the six indexes. The association with the presence of hypertension was examined with binomial and multinomial logistic regression. Results: In multinomial logistic models, which included age, gender, smoking, drinking, sedentary lifestyle, estimated glomerular filtration rate, urinary sodium, urinary albumin creatinine ratio, and use of medications known to influence insulin resistance as covariates, all individual components and surrogate insulin resistance indexes were independently associated with the presence of hypertension. Values of pseudo R square ranged from 0.342 for the multivariate model including TG/HDL-C to 0.357 for the model including TyG-WC, but with no clear superiority of any of the tested indexes over all others. Models including BMI and WC had a similar ability to predict the presence of hypertension as most of the surrogate indexes and they were slightly superior to TG/HDL-C and TyG. Conclusions: Although TG/HDL-C, VAI, LAP, TyG, TyG-BMI, and TyG-WC were independently associated with the presence of hypertension, no superiority could be demonstrated over the use of BMI and WC as predictors of hypertension in this cross-sectional study.
Protein Quality and Amino Acid Utilization in Chickens

It is well known that dietary protein affects the growth performance and carcass composition of poultry. Over the last several decades, numerous studies have been carried out to investigate to optimize the level of dietary protein since the protein is an important and expensive constituent in poultry feed. It is generally accepted that dietary protein should represent a balance of amino acids supporting the requirements for growth and maintenance of birds. A protein with balanced essential amino acids that matches a bird’s requirement and sufficient non-essential amino acid nitrogen to enable the synthesis of all of the non-essential amino acids, is referred to as an ‘ideal protein’. Feeding of excess protein or amino acids may result in an amount of nitrogen emission. Most common method to reduce nitrogen emission is using diet formulation which has lower dietary crude protein level and higher concentration of amino acid supplements. However, there are conflicting reports whether low protein diets supplemented with synthetic amino acids can obtain the growth performance equal to high protein diets. Excessive nitrogen excretion caused by amino acid imbalance also may influence the environment of poultry house due to ammonia production from uric acid. These environmental conditions may increase the incidence of skin problem or respiratory diseases of chickens. Various strategies based on comprehensive understanding should be tested to optimize nitrogen utilization and reduce nitrogen emission while maintaining the performance in poultry production.
An auction-based approach to complex task allocation for multirobot teams

Current technological advances and application-driven demands are leading to the development of autonomous multirobot systems able to perform increasingly complex missions. However, existing methods of distributing mission subcomponents among multirobot teams do not explicitly handle this complexity and instead treat tasks as simple indivisible entities, ignoring any inherent structure and semantics that such complex tasks might have. The information contained within task specifications can be exploited to produce more efficient team plans by giving individual robots the ability to come up with innovative and more localized ways to perform a task or enabling multiple robots to cooperate by sharing the subcomponents of a task. In this thesis, we address a generalization of the task allocation problem we call the complex task allocation problem, and present a distributed solution for efficiently allocating a set of complex tasks among a robot team. Our solution to multirobot coordination for complex tasks extends market-based approaches by generalizing task descriptions into task trees, thereby allowing tasks to be traded in a market setting dynamically at multiple levels of abstraction. In order to incorporate these task structures into a market mechanism, novel and efficient bidding and auction clearing algorithms are required. Explicitly reasoning about complex tasks presents a tradeoff between solution efficiency and computation time. We analyze that tradeoff for task tree auctions and further introduce a method for dramatically reducing the bidding time without significantly affecting solution quality. As an example scenario, we focus on an area reconnaissance problem which requires sensor coverage by a team of robots over a set of defined areas of interest. We explore this problem in the context of two different team objectives: minimizing the sum of costs and minimizing the makespan. The advantages of explicitly modeling complex tasks during the allocation process is demonstrated by a comparison of our approach with existing task allocation algorithms in this application domain. In simulation, we compare the solution quality and computation times of these algorithms. Implementations on teams of indoor and outdoor robots further validate our approach. Finally, we consider additional applications including search and rescue, multirobot object pushing, and area monitoring.
Phosphorus recovery: minimization of amount of pharmaceuticals and improvement of purity in struvite recovered from hydrolysed urine

Struvite (MgNH4PO4·6H2O) is normally used as a fertilizer in agriculture, where struvite crystallization from hydrolysed human urine is a simple and reliable method for phosphorus (P) recovery. Human urine, however, contains high amount of pharmaceuticals, which may cause health risk for applications. This research investigates the possibility of decreasing the amount of pharmaceuticals (tetracycline, demeclocycline and oxytetracycline) in struvite crystals recovered from synthetic and human urines by focusing on storage time, and of increasing the quality of struvite production. Urines were stored for different times up to 15 days prior to recovery of phosphorus by two steps, spontaneous precipitation and struvite crystallization. The morphology of spontaneous precipitates and struvite crystals was observed. Spontaneous precipitation removed around 17–24% of phosphate from synthetic and human urines, while pharmaceuticals were removed with a quite high amount at a short storage time (5 days) and this amount decreased with increasing the storage time (10 and 15 days). Urines with>70% remaining phosphates were re-used for struvite crystallization by adding extra magnesium. It was found that maximum P-recovery efficiency could be achieved from struvite crystallization at 5-day storage time, 70% and 68% of remaining P in the separated supernatant from synthetic and human urines, respectively, whereas less than 1% pharmaceuticals remained in the struvite crystals from both samples. This indicates that the procedure in this work is a good method for phosphorus recovery, in which high struvite purity (>99%) is obtained with low amount of pharmaceuticals.
Short‐term exercise training enhances functional sympatholysis through a nitric oxide‐dependent mechanism

Sympathetic nervous system activity causes tonic vasoconstriction in resting and contracting skeletal muscle. Vasoactive molecules released from the active skeletal muscle and/or endothelium have been shown to inhibit sympathetic vasoconstriction, a phenomenon defined as functional sympatholysis. A definitive mechanism responsible for functional sympatholysis has yet to be identified; however, nitric oxide (NO) appears to be involved. It is unknown whether exercise training alters the inhibition of sympathetic vasoconstriction and NO‐mediated sympatholysis in resting and contracting skeletal muscle. The present findings demonstrate that short‐term exercise training augments functional sympatholysis in a training‐intensity‐dependent manner through a NO‐dependent mechanism. These novel findings advance our understanding of the effects of exercise training on the regulation of sympathetic vasoconstriction in resting and contracting skeletal muscle.
The Quality of Well-Being Scale: critical similarities and differences with SF-36.

PURPOSE To summarize the development and application of a generic measure of health-related quality of life known as the Quality of Well-Being Scale (QWB). BACKGROUND The QWB is part of a general health policy model. The measure includes functional components for mobility, physical activity, and social activity. In addition, it includes a comprehensive list of symptoms and problems. QWB scoring allows placement of each individual on a continuum of wellness ranging from 0 (for dead) to 1.0 for asymptomatic full function. The General Health Policy Model combines this point in time measure with information on prognosis and mortality to estimate quality-adjusted life-years (QALYs). Forming a ratio of program costs to QALYs yields estimates of cost per quality-adjusted life year. Evidence supports the validity of the QWB for a wide variety of applications in population monitoring, descriptive studies of patient populations, and clinical trials. We offer a variety of comparisons between the QWB and Medical Outcomes Study Short Form 36 (SF-36). MAIN FINDINGS In comparison with the SF-36, the QWB provides less information on health profiles, but has the advantage of providing a metric that can be used for cost-utility or cost-effectiveness analysis. Although ceiling effects are common for some SF-36 subscales, perfect scores on the QWB are very rare. The QWB has an approximately normal distribution for populations of adults. Although, often criticized for not including a mental health component, we present evidence documenting the validity of the QWB for patients with psychological and psychiatric diagnoses. CONCLUSIONS The QWB and SF-36 are alternative comprehensive measures of health outcomes.
Relationships between academic performance, SES school type and perceptual-motor skills in first grade South African learners: NW-CHILD study.

BACKGROUND Perceptual-motor skills contribute to a variety of basic learning skills associated with normal academic success. This study aimed to determine the relationship between academic performance and perceptual-motor skills in first grade South African learners and whether low SES (socio-economic status) school type plays a role in such a relationship. METHODS This cross-sectional study of the baseline measurements of the NW-CHILD longitudinal study included a stratified random sample of first grade learners (n = 812; 418 boys and 394 boys), with a mean age of 6.78 years ± 0.49 living in the North West Province (NW) of South Africa. The Beery-Buktenica Developmental Test of Visual-Motor Integration-4 (VMI) was used to assess visual-motor integration, visual perception and hand control while the Bruininks Oseretsky Test of Motor Proficiency, short form (BOT2-SF) assessed overall motor proficiency. Academic performance in math, reading and writing was assessed with the Mastery of Basic Learning Areas Questionnaire. Linear mixed models analysis was performed with spss to determine possible differences between the different VMI and BOT2-SF standard scores in different math, reading and writing mastery categories ranging from no mastery to outstanding mastery. A multinomial multilevel logistic regression analysis was performed to assess the relationship between a clustered score of academic performance and the different determinants. RESULTS A strong relationship was established between academic performance and VMI, visual perception, hand control and motor proficiency with a significant relationship between a clustered academic performance score, visual-motor integration and visual perception. A negative association was established between low SES school types on academic performance, with a common perceptual motor foundation shared by all basic learning areas. CONCLUSION Visual-motor integration, visual perception, hand control and motor proficiency are closely related to basic academic skills required in the first formal school year, especially among learners in low SES type schools.