Miracle-dz/UniFAR-FTUs huggingface dataset:
Antioxidant activity, total phenolic and flavonoid content of several indigenous species of ferns in East Kalimantan, Indonesia

Abstract. Nurhasnawati H, Sundu R, Sapri, Supriningrum R, Kuspradini H, Arung ET. 2019. Antioxidant activity, total phenolic and flavonoid content of several indigenous species of ferns in East Kalimantan, Indonesia. Biodiversitas 20: 576-580. This study aimed to determine the total phenolic and flavonoids content and antioxidant activity of ethanol extract of several indigenous species of ferns in East Kalimantan. Total phenolic content was determined by Folin-Ciocalteau method and flavonoid content was measured by colorimetric method. Antioxidant activity was evaluated by DPPH (2,2-diphenyl-1-picrylhydrazyl) method. The result of photochemical screening indicated that the leaves of Plagiogyria pycnophylla, Plagiogyria glauca, and Stenochlaena palustris contained alkaloid, flavonoid, tannin, saponin, and steroid while Acrostichum aureum contained flavonoid, tannin, saponin and steroid. The result showed extract Acrostichum aureum had the highest total phenolic content (366.4573 ± 2.2117 mg GAE.g-1), flavonoid content (228.6087 ± 2.2548 mg QE.g-1), and very strong antioxidant activity with IC50 value 29.5303 ppm. There is positive correlation between total phenolic content, flavonoid with antioxidant activity.
A New Method Combining Pattern Prediction and Preference Prediction for Next Basket Recommendation

Market basket prediction, which is the basis of product recommendation systems, is the concept of predicting what customers will buy in the next shopping basket based on analysis of their historical shopping records. Although product recommendation systems develop rapidly and have good performance in practice, state-of-the-art algorithms still have plenty of room for improvement. In this paper, we propose a new algorithm combining pattern prediction and preference prediction. In pattern prediction, sequential rules, periodic patterns and association rules are mined and probability models are established based on their statistical characteristics, e.g., the distribution of periods of a periodic pattern, to make a more precise prediction. Products that have a higher probability will have priority to be recommended. If the quantity of recommended products is insufficient, then we make a preference prediction to select more products. Preference prediction is based on the frequency and tendency of products that appear in customers’ individual shopping records, where tendency is a new concept to reflect the evolution of customers’ shopping preferences. Experiments show that our algorithm outperforms those of the baseline methods and state-of-the-art methods on three of four real-world transaction sequence datasets.
Optimal Design of a PMLSM with 9 Pole 10 Slot for Detent Force Reduction

Detent force of a permanent magnet linear motor(PMLSM) consist of cogging and drag forces, and should be minimized for high precision control purpose applications. This paper shows that the cogging force can be reduced effectively by employing 9 pole 10 slot structure. The drag force is minimized by optimizing the total length and shape of the exterior teeth of armature core simultaneously by using() evolution strategy coupled with response surface method. After optimization, the optimized PMLSM is proven to reduce 95% and 92.6% of the cogging and total detent forces, respectively, and give 12% and 6.4% higher Back-emf and thrust force, respectively, compared with a conventional 12 pole 9 slot structure under the same condition. Additionally, Simulation results by the proposed optimum design are verified by the experiment results.
Vibrational Transportation on a Platform Subjected to Sinusoidal Displacement Cycles Employing Dry Friction Control

Currently used vibrational transportation methods are usually based on asymmetries of geometric, kinematic, wave, or time types. This paper investigates the vibrational transportation of objects on a platform that is subjected to sinusoidal displacement cycles, employing periodic dynamic dry friction control. This manner of dry friction control creates an asymmetry, which is necessary to move the object. The theoretical investigation on functional capabilities and transportation regimes was carried out using a developed parametric mathematical model, and the control parameters that determine the transportation characteristics such as velocity and direction were defined. To test the functional capabilities of the proposed method, an experimental setup was developed, and experiments were carried out. The results of the presented research indicate that the proposed method ensures smooth control of the transportation velocity in a wide range and allows it to change the direction of motion. Moreover, the proposed method offers other new functional capabilities, such as a capability to move individual objects on the same platform in opposite directions and at different velocities at the same time by imposing different friction control parameters on different regions of the platform or on different objects. In addition, objects can be subjected to translation and rotation at the same time by imposing different friction control parameters on different regions of the platform. The presented research extends the classical theory of vibrational transportation and has a practical value for industries that operate manufacturing systems performing tasks such as handling and transportation, positioning, feeding, sorting, aligning, or assembling.
Fate of Particulate Matter Associated with Produced Water Discharge by Offshore Platforms in the Adriatic Sea (Mediterranean Sea)

In the Adriatic Sea (Mediterranean Sea), during monitoring of Production Water (PW) discharged from offshore platforms, high contamination levels of metals, PAH, and aliphatic hydrocarbons are detected in the sediment close to some installations. Here, we investigate for the first time, the transport and fate of the total suspended solids (TSS) associated with PW discharged by selected platforms, considering the separation of particulate matter from the water plume. We apply a 3D hydrodynamic model and a Lagrangian module to simulate the dispersion of PW suspended substances, then we relate the numerical results to the sediment contamination measured data. The TSS released with PW determines a negligible contribution along the water column and seems poorly related to the anomalies observed in the sediment contamination levels. This approach paves the way to assess the potential risks arising from TSS discharged with the PW on marine ecosystems and to optimize the environmental monitoring tools.
Impiego di alternatori sincroni trifase in sistemi di generazione da fonti di energia rinnovabile: caratteristiche innovative di costruzione e controllo per garantire al servizio fornito efficienza, prestazioni e affidabilita'

La richiesta di energia elettrica e in continuo aumento e negli ultimi anni ha acquisito un’enorme importanza l’impatto ambientale. Gli obiettivi che la comunita globale si sta fissando sono di ridurre l’uso di fonti primarie di origine fossile e sviluppare e incentivare lo sfruttamento di energie alternative e sostenibili. Oltre alla costruzione di nuove centrali ad impatto zero quali idroelettriche, eoliche, solari, geotermiche, si diffonde l’impiego di isole di cogenerazione che permettono un miglior sfruttamento dell’energia primaria servendosi anche dell’energia persa in calore per applicazioni di teleriscaldamento locale; utilizzando magari come fonte primaria combustibili di origine biologica. L’utilizzo di alternatori ad alta efficienza e una prerogativa fondamentale per contribuire a migliorare la resa del sistema globale di generazione. Il seguente lavoro di tesi illustra le caratteristiche e gli accorgimenti adottati in Marelli Motori per la costruzione e il controllo degli alternatori sincroni, prestando attenzione alla gestione dei transitori, ai sistemi di protezione, alle soluzioni adottate per evitare interruzioni di servizio, ai sistemi di monitoraggio ed emergenza, ecc. E sviluppato infine un controllo ottimo lineare quadratico per il controllo dell’eccitazione di un alternatore
The Networking and Global Awareness of Young Technology-based Entrepreneurs: a Case Study of the Master of Enterprise (ment) Programme of the Manchester Science Enterprise Centre

This study addresses the networking and global awareness of young technology-based entrepreneurs (YTBE). It is based on six technical entrepreneurs who graduated from the Master of Enterprise (MEnt) programme at Manchester Science Enterprise Centre. The main purpose of this research was to determine if YTBEs realise the importance of networks to business success and whether they act positively to build them. The second purpose was to see if they consider international opportunities and whether they build skills to sense and act upon them. The results have policy implications for supporting the development of the high-technology SME sector and providing insights into the internationalisation of high-technology SMEs.The research found that the YTBE from this course, show highly positive perception towards networks. Policy-makers are encouraged to nurture and further develop this type of humanbased incubator. The investigation of global awareness of the young entrepreneurs shows less optimistic results. This situation should give cause for concern to both educators and policy makers.
Performance of Black and Indigenous applicants in a medical school admissions process

Background Diversity in medical schools has lagged behind Canada’s growing multicultural population. Dalhousie medical school allows Black and Indigenous applicants to self-identify. We examined how these applicants performed and progressed through the admissions process compared to Other group (applicants who did not self-identify). Methods Retrospective analysis of four application cycles (2015-2019) was conducted, comparing demographic data, scores for application components (Computer-Based Assessment for Sampling Personal Characteristics (CASPer), MCAT, GPA, supplemental, discretionary, Multiple Mini Interview (MMI)), and final application status between the three groups. Results Of 1322 applicants, 104 identified as Black, 64 Indigenous, and 1154 Other. GPA was higher in the Other compared to the Indigenous group (p < 0.001). CASPer score was higher in the Other compared to the Black group (p = 0.047). There was no difference between groups for all other application components. A large proportion of Black and Indigenous applicants had incomplete applications. Acceptance rates were similar between all groups. Black applicants declined an admission offer substantially more than expected (31%; p < 0.001). Conclusions Black and Indigenous applicants who completed their application progressed well through the admissions process. The pool of diverse applicants needs to be increased and support provided for completion of applications. Further study is warranted to understand why qualified applicants decline acceptance.
Disconnection and the Healing Practice of Imagination for Mormon Environmental Ethics

The Church of Jesus Christ of Latter-day Saints possesses a subversive and fecund interpretation of the Christian creation narrative. This interpretation, denying creation ex nihilo, bespeaks a particular attention to and care for the living earth. However, Latter-day Saint praxis is wounded by a searing disconnect between the theopoetics of its conceptual creation and its lived practice. I argue that the Church must understand this disconnect as a wound and attend to it as such. I turn to theopoetics, arguing that it is in the lived practices of Latter-day Saints engaging somatically with the Earth that can restore our imaginative potential and move toward healing. I begin by exploring the Christian conception of creation ex nihilo and juxtapose this with the Latter-day Saint understanding of formareex materia. I then explore the implications of such a cosmology for environmental ethics and probe the disconnections between theory and practice in Mormonism broadly construed. I propose that the healing salve for disconnection is imagination, a salve found in the first heartbeat of the Latter-day Saint story. I speak with Latter-day Saint theopoetics and indigenous voices, proposing ultimately that is with them that the healing of theology and praxis must begin.
Business Models for Demand Response: Exploring the Economic Limits for Small- and Medium-Sized Prosumers

The European energy transition increasingly requires flexibility to ensure reliable operation of the electricity system, making use of demand response, a promising concept. With technological advances in the fields of big data analysis and the internet of things, small- and medium-sized prosumers could also provide flexibility services through aggregators. A lot of conceptual work has been conducted recently to formulate business models in this context, but their viability still remains unclear. In this paper, a quantitative validation is conducted of two business models that are frequently proposed in the scientific discussion. The aim of this work is to explore the economic limits of these business models and show under which conditions they can be profitable for small- and medium-sized prosumers. For this purpose, a multi-level contribution margin calculation for several scenarios, customer segments and target markets is conducted. The results show that the profitability for the participation of small loads is still very low under current market conditions. Especially for household consumers, transaction costs are too high to be covered by the revenues. Considering the quantitative results, in the future profitable business cases can only be expected for medium-sized tertiary consumers.
Mixed Convection in Lid-Driven Cavity with Inclined Magnetic Field

Effects of magnetic field inclination on fluid flow and heat transfer in a two-dimensional square cavity are analyzed numerically. The vertical walls are well insulated, the bottom wall is maintained at a cold temperature, while the top moving lid is kept at a hot temperature. The finite volume method and SIMPLE algorithm are employed to solve the dimensionless governing equations. The results are presented by the profile of streamlines and isotherms, and the variation of Nusselt number. Mixed convection flow is retarded by the presence of the magnetic field and the average Nusselt number is an increasing function of the magnetic field angle.
Catalytic Decomposition of Ammonia for Hydrogen Production over Carbon Nanofiber Supported Fe and Mo Catalysts in a Microwave Heated Reactor

Abstract Microwave heated reactor which was loaded with carbon fiber supported iron and molybdenum incorporated monometallic catalysts was used to produce COx free hydrogen from ammonia. Impregnation procedure was applied to synthesize the catalysts at different metal loading (4–14 wt % according to ICP-OES) using iron nitrate or ammonium molybdate and reaction tests were carried out under the flow of pure ammonia (GHSV: 36,000 ml/hgcat). Activities of molybdenum incorporated carbon fiber catalyts are found to be lower than that of the iron loaded ones in the conventional reaction system. The effect of metal loading was clealy seen in the activity of molybdenum incorporated catalyst, unlike iron incorporated catalyts, especially under high reaction temperature conditions. Catalysts showed greatly enhanced activities in microwave heated system in comparison to conventionally heated reactor system. Complete conversion of ammonia was achieved at 500 °C by using molybdenum incorporated catalysts and at 450 °C by using iron incorporated catalysts (with GHSV of 36,000 ml/hgcat) in microwave heated reactor system. Transfer of energy directly to the active species and formation of carbide species, Fe2C or Mo2C, during the reaction under microwave application could be considered as the major factors leading to a better ammonia conversion. Structural properties of carbon support materials, such as the surface area, could be effective on the activity of the catalysts via the distribution of active species, however, this would be more pronounced effect in conventional system.
Modeling of switching transients in Nysted Offshore Wind Farm and its comparison with measurements : -EMT simulations with Power Factory and PSCAD

Introduction In a near future the offshore wind farms are expected to increase in number and size. At present some development plans in the UK have a total installed capacity higher that 1,000 MW. Some challenges on how to design and build the internal network connecting the wind turbines will arise from the increasing size of the parks. In existing OWFs, the collection grids were designed as any medium voltage underground cable system for distribution. However, there are many differences between the collection grid in the OWP and any distribution system, but the most important of all is the limited access to the park for maintenance and repair due to weather conditions. This limitation narrows the design to obtain high reliability and low maintenance for the equipment. Description The aim of this thesis is to use PSCAD as simulation tools to model the MV collection grid of an operational wind farm and compare it to switching measurements, as well as previous results from Power Factory simulations. The dynamic phenomena in main electrical components like cables, transformers and circuit breakers will be explained, summarized and simulated. The model of the cables, transformers and switchgear will be created based on available information from the manufacturer and the capabilities of the simulation programs. The results from PSCAD and Power Factory will be compared between them and the measurements done in Nysted Wind Park, to conclude whether or not the programs can be trusted. Specifically the closing of the line breaker for a row on the transformer platform will be simulated, as well as the connection of one/several turbines, with the intention of compute the voltage dip due to the transformer energization. Link DONG energy
Climate change and the built environment: an evaluation of sustainable refurbishment options for higher education buildings in the UK

Higher education institutions (HEIs) in England occupy approximately 25 million m2 of gross space. Many of the buildings in these estates were constructed when thermal standards were far lower than those specified today. Estate managers now need to consider how to manage existing buildings in order to meet new requirements for occupants’ comfort, energy efficiency and greenhouse gas emission targets. The choice of whether to refurbish, or demolish and rebuild, requires a critical analysis of a range of environmental, social and economic issues. To this end, the Association of University Directors of Estates (AUDE) developed a toolkit that identifies crucial issues to be taken into account to make this choice clear. However, while this toolkit represents a considerable step forward in the decision-making process, it does not incorporate the projected impact of climate change and its uncertainty. Thermal modelling analysis of an existing naturally ventilated higher education building, built in 1974, suggests that projected changes in the UK climate will significantly increase building overheating. Therefore, it is essential that the impacts of climate uncertainty now and in the future are considered when refurbishment options are assessed. A framework has been developed, taking climate change impacts into consideration, which ranks different refurbishment options according to the following performance criteria: thermal efficiency, environmental impact and cost effectiveness. Whilst the use of single performance criterion results in different ranking of refurbishment solutions in this case study, the use of high performance glazing is the best overall single refurbishment solution. In general a combination of high performance glazing, wall insulation and the use of external shading together are considered to be the best combined refurbishment solution. External shading is the least effective single refurbishment solution.
Coaching Cross Country Successfully

One look at Joe Newton's record and it's easy to see why he's achieved near-legendary status as a cross country coach. During 48 years at York High School in Elmhurst, Illinois, he has dominated like no other cross country coach ever has, leading his teams to 19 national titles and 24 state titles. At home, his squads have been nearly invincible, winning 98% of their meets. Now in "Coaching Cross Country Successfully," Newton shares the secrets to his unmatched success. With this complete guide, you'll get a firsthand account of how to teach, train, and motivate like the master. You'll learn not only how Newton built his running dynasty but also how you can apply his principles of discipline, dedication, and teamwork to create your own winning cross country program. Combining straightforward instruction with dozens of personal anecdotes, Newton shows you how to: - recruit athletes within your school, - teach the basics of distance-running technique, - develop winning race strategies, - prepare for meets, and- evaluate runners and your running program. You'll also find dozens of time-tested workouts and a copy of Newton's 12-week practice schedule for title-winning performance.In addition, "Coaching Cross Country Successfully" provides you with a look at Newton's mastery of the intangibles of running a cross country program. Learn how he uses his enthusiasm and communication skills to motivate his athletes and build support for his program within the school and community. Best of all, Newton tells you how to do these same things in your program. "Coaching Cross Country Successfully" is part of the Coaching Successfully series, a resource in the American Sport Education Program's SportCoach curriculum.
Novel statistical modelling approaches for pesticide residues

Plant protection products play an important role in protecting our food supply against pests, diseases and weeds. As global food demand rises, their role in maintaining the quality and quantity of our food production is likely to increase in the absence of other control methods. To manage the risks associated with pesticide usage, EU laws regulate the placing of plant protection products on the market and the monitoring of pesticide residues in food. This involves assessing the potential risks associated with human dietary exposure by conducting dietary risk assessments which take both consumption patterns and residue levels of pesticides in and on food items into account. Residue levels will vary from one food item to the next so we need to know what the distribution of residues over food items is in order to assess how high residue levels can be. In this thesis we introduce novel statistical approaches that can be used to obtain better estimates of the variation and uncertainty in pesticide residue levels on raw agricultural products. The rst approach uses monitoring data and pesticide usage information to model the correlation in pesticide residue levels when multiple pesticides have been used. Next we introduce an approach that can be used to describe the variation in log-residue levels in units, assuming that multiple data sets share a common shape. The nal model describes both within-eld and between-field variation of residue levels. These new approaches, which provide promising alternatives to existing methods, can be implemented in existing dietary risk assessment software and will expand the suite of models available to risk assessors when assessing dietary exposure to pesticides.