Miracle-dz/UniFAR-FTUs huggingface dataset:
Laminar-Turbulent Transition Mechanisms , Prediction and Control

6th ERCOFTAC SIG 33 workshop Laminar-Turbulent Transition Mechanisms, Prediction and Control Kleinwalsertal, Austria, June 17-20, 2007 address: Dr.-Ing. Inken Peltzer Prof. Dr.-Ing. Wolfgang Nitsche Marchstr. 12, Sekr. F2 10587 Berlin, Germany Institut of Aeronautics and Astronautics, Technical University Berlin phone: +49 30 314 23094 fax: +49 30 314 22955 e-mail: Inken.Peltzer@tu-berlin.de The investigation presented in this workshop is focused on the laminar-turbulent boundary layer transition on a two-dimensional airfoil, in particular at measuring the development and amplification of the Tollmien-Schlichting (TS) instabilities leading to transition. The process of generating the TS waves depends strongly on the environmental flow conditions. Therefore, it is necessary to investigate the transition under atmospheric conditions in flight experiments as well as wind tunnel tests. Various measuring techniques for in-flight and wind tunnel experiments were applied to measure the temporal and spatial propagation of natural TS waves. Additionally experiments with controlled generated disturbances with an array of spanwise distributed point sources were performed. Of substantial interest was the development from their early linear up to the weakly nonlinear stage of laminar turbulent transition. A laminar wing glove was used for the measurements, which was developed for the Grob G103 TWIN II two-seater sailplane at the Institute for Aeronautics and Astronautics, Technical University of Berlin (fig.1). The measuring glove has a 2D center part of 1.0 m span and a chord length of 1.22 m. It has an exchangeable wing segment, which can be equipped with different surface sensors or actuators. The sensor setup is also shown in fig.1. A spanwise array of 16 surface hot-wire sensors was located at a chord length of 33%. The surface hot-wire is a flush-mounted hot-wire welded across a narrow slot (width < .1 mm) in the wing surface and was operated by a constant-temperature anemometer. This sensor was especially used for measuring the instabilities even in the early linear stage of amplification. Furthermore, an piezo foil sensor array of 74 sensors was used in the later stages downstream (at 40 % to 50 % chord length). Small loudspeakers Figure 1: Sailplane with the glove including the sensor arrays
Dimension Characteristics and Precipitation Efficiency of Cumulonimbus Clouds in the Region Far South from the Mei-Yu Front over the Eastern Asian Continent

Abstract Dimension characteristics in precipitation properties of cumulonimbus clouds are basic parameters in understanding the vertical transport of water vapor in the atmosphere. In this study, the dimension characteristics and precipitation efficiency of cumulonimbus clouds observed in the Global Energy and Water Cycle Experiment (GEWEX) Asian Monsoon Experiment (GAME) Huaihe River Basin Experiment (HUBEX) are studied using data from X-band Doppler radars and upper-air soundings. The maximum echo area (EAmax) of the cumulonimbus clouds ranged from 0.5 to 470 km2, and the maximum echo top (ETmax) ranged from 2 to 19 km. The total number of cells (TNC) within the cumulonimbus clouds over their lifetime was from 1 to 25. The ETmax, TNC, area time integral (ATI), and total rainfall amount (Rtot) strongly correlate with the EAmax of the cumulonimbus clouds. The cell-averaged ATI (ATIcell = ATI/TNC), maximum rainfall intensity (RImax), and cell-averaged rainfall amount (Rcell = Rtot/TNC) increase when the EA.
MULTI-HARMONIC DC-BIAS NETWORK BASED ON ARBITRARILY WIDTH MODULATED MICROSTRIP LINE

In this work, we present a novel DC-bias network for multi- harmonic microwave circuits based on an arbitrarily width-modulated microstrip line. The arbitrary shape of the width-modulated microstrip line is obtained by using multiple microstrip taper sections. The method is illustrated through the design of four difierent DC-bias networks blocking from 1 to 4 harmonic components of a 2.5GHz signal. The designs with an optimum shape for the arbitrarily width- modulated microstrip line have been manufactured and measured, obtaining a good agreement between the simulated and measured behavior.
mm-VLBI observations of the active galaxy 3C 111 in outburst

The broad-line radio galaxy 3C 111 exhibited a major flux density outburst in 2007. Here, we present imaging and preliminary kinematic results of the jet, based on three millimetre-VLBI observations (86 GHz) using the Global Millimeter VLBI Array (GMVA) covering one year just after the radio flare. The GMVA data allow us to study this outburst with unprecedented image fidelity at highest (sub-parsec) resolution. On these scales, the outburst is resolved into a complex series of plasma components forming an intriguing bent structure. Within 1 mas from the jet base, ejections vary in position angle and components move with an apparent velocity of ~3.7c, significantly slower than the maximum velocity observed with cm-VLBI on scales beyond 1 mas.
Trophic ecology and persistence of invasive silver carp Hypophthalmichthys molitrix in an oligotrophic South African impoundment

The alien invasive silver carp Hypophthalmichthys molitrix established a self-sustaining feral population in an oligotrophic impoundment, Flag Boshielo Dam, in South Africa. The ability of this population to persist in a dam with low algal biomass (median annual suspended chlorophyll a = 0.08 µg l−1), and limited access to rivers considered large enough for successful spawning, has implications for their invasive potential in other systems. Stomach content and stable isotope analysis were used to assess the trophic ecology of H. molitrix, which was then compared with indigenous Mozambique tilapia Oreochromis mossambicus, on a seasonal basis during 2011. Hypophthalmichthys molitrix are generalist filter feeders, with a diet consisting primarily of sediment, vegetative detritus, dinoflagellates and diatoms. The dominance of sediments in their stomachs suggests occasional benthic scavenging. However, H. molitrix occupied a higher trophic level (TL = 2.8) than expected, suggesting that this population subsidised their diet with an unidentified dietary constituent, characterised by enriched nitrogen values. Although the stomach contents indicated dietary overlap between H. molitrix and O. mossambicus, stable isotopes revealed fine-scale resource partitioning, despite both species occupying the same trophic level. Nonetheless, the persistence of this feral H. molitrix population in an oligotrophic impoundment highlights their phenotypic plasticity.
Production System Concept for Implementing Mass Customization Strategy in Furniture Industry

This paper presents a production system concept for implementing mass customization strategy in furniture industry. The developed concept represents the characteristics of the European and Bulgarian furniture industries as well as the globalization’s impact on the furniture industry. The suggested production system concept is based on the development of organizations through partnership and the development and application of a strategy for mass customization in contract manufacture. The suggested conceptual solution for establishment of Suppliers Park would have a great importance for the Bulgarian furniture industry because each time more Bulgarian furniture enterprises turn to the idea of founding a contract manufacture. The suggested decision is a stage in a research project between Technical University Sofia and representatives of the Furniture Cluster in
Reality checks for and of factor pricing

We propose two reality checks to gauge factor pricing. We do so since the typically used R and t-statistics from the second pass of the Fama and MacBeth (1973) two pass procedure signal factor pricing when the observed factors miss the unobserved factor structure of portfolio returns. A large number of (macro-economic) factors that are commonly used, like, for example, consumption and labor income growth, housing collateral, consumption-wealth ratio, labor income-consumption ratio, interactions of either one of the latter three with other factors, fail to capture any of the unobserved factor structure in the portfolio returns so the R’s and t-statistics reported for (the risk premia on) them are spurious. The reality checks reveal the (un)reliability of these statistics. The first reality check shows if there is any factor structure left in the residuals from the first pass of the Fama-MacBeth two pass procedure by computing the percentage of the variation of the residuals that is explained by their three largest principal components. If this percentage is large, the R of the second pass regression is spuriously large so we cannot interpret it. The second reality check computes 95% confidence sets for the risk premia on the factors using statistics whose large sample distributions remain valid when the observed factors miss the unobserved factor structure. These confidence sets show, since they are then unbounded, that we cannot determine risk premia on observed factors that do not capture any of the unobserved factor structure of the portfolio returns.
Development, Testing and Reporting of Mobile Apps for Psycho-social Interventions: Lessons from the Pharmaceuticals

The mobile Health offers great potential for delivery of Psycho-social Interventions. So far, the researchers have focused mainly on efficacy, and to some extent feasibility of Psycho-social Interventions. Poor reporting of development and initial testing has been highlighted in the recent published literature. This is not surprising considering the lack of guidance from the national regulatory agencies in developed countries. A lack of standard ways of development and testing of apps makes scientific evaluation of the intervention and replicability almost impossible. Replicabiliy is an essential component of good science. We are proposing a pathway to develop, test and report new mobile apps that deliver Psycho-social Intervention, that is based on current practices of approval of new drugs by the US, Food and Drug Administration (FDA). This proposed process consists of modifications in the current app development process, i.e., planning, alpha and beta testing. We are also suggesting an additional delta stage of testing. We note the advantages and limitations in using such approach.
Cognition as a moderator of GDV emission: past research, a current explanation and some ideas for the future

This article reports two research studies undertaken by the authors that have investigated the psychological correlates of the GDV technique. The results of these studies have been given elsewhere and obviously have not changed (see Dobson & O’Keeffe 2005, 2010). What has changed after over ten years of work in the area and with the benefit of hindsight is the interpretation of earlier results. Most would agree we believe that quite what the GDV measures when human subjects are involved is the key issue and one that has hampered the credibility of the technique. So after reporting the relevant results from our earlier work, this article presents our current “best guess” of what the GDV does actually measure when homo sapiens are tested.
New Information Inequalities in Terms of Variational Distance and its Application

In this work, new information inequalities are obtained and characterized on new generalized f- divergence (introduced by Jain and Saraswat (2012)) in terms of the Variational distance and these inequalities have been taken for evaluating some new relations among well known divergences. These new relations have been verified numerically by considering two discrete probability distributions: Binomial and Poisson. Asymptotic approximation on new generalized f- divergence is done as well.
Industry 4 . 0 : Strategy for More Sustainable Industrial Development in SMEs

Several key factors influence the industrial production such as the instability of the market, the short duration of the life of the product, the individualization of the product and globalization. This means that companies must adapt to the requirements of the market by improving the technical tools. Actually the automated production systems whitin companies seem less connected against the Industry 4.0 which is based on the interconnection of machines, of products and of people. This industrial revolution also represents a desire to respond to current issues related to the principles of sustainable development such as resources management and energy. This article is intended to emphasize the importance of the strategic vision of the industrial countries to the Horizon 2030, and the relationship between the industry 4.0 and sustainable development in order to ensure the sustainability of resources and its benefit for future generations. In addition, it focuses on the main conditions to migrate from the Industry 3.0 to the Industry 4.0 based on the Internet of Objects (IoT) and the cyber physical system (CPS).
Antimicrobial properties of protein extracts from wild mushroom fungi and native plant species against hospital pathogens

Protein extracts of either native or exotic rare mushroom fungi and plants that are normally known for novel therapeutics including immune modulation were investigated for their potential antimicrobial effects. Data obtained using the Kirby-Bauer’s disc-diffusion assay methods showed that a number of locally sourced wild mushroom fungi (e.g. Ganoderma resinaceum , Russula fragilis and Inocybe grammata ) had proteins with inherent antimicrobial properties against a number of typical hospital pathogens. The wild type fungus Mycena pura exhibited strong antagonism against Escherichia coli , an organism often commonly associated with nosocomial infections both locally and worldwide. Polyacrylamide gel electrophoresis (PAGE) of protein extracts revealed unique protein banding patterns for the exotic fungal species and possessed significant inhibitory effects against a range of nosocomial pathogens including MRSA, Salmonella , Candida and Aspergillus species. This small-scale study revealed the occurrence of wild fungal peptides of potential therapeutic significance and antimicrobial potential for exploitation in complementary therapies in clinical and veterinary medicine. Key words:
Low profile pattern-switchable multibeam antenna consisting of four L-shaped microstrip lines

A multibeam antenna consisting of a set of four L-shaped microstrip line sections is presented for pattern switchable applications. A planar electromagnetic band gap substrate is implemented to reduce the antenna profile to λ 2.45 /35, where λ 2.45 is the free space wavelength at a design frequency of 2.45 GHz. An impedance matching network is integrated on the lowest layer below a ground plane. The microstrip lines have a resonant frequency of 2.45 GHz and are excited separately. When one of the strips is excited, the antenna generates a tilted beam with a gain of 8.6 dBi. By switching the excitation strip sequentially, a full azimuth beam steering is achieved. When the antenna is located above a large conducting reflector, the antenna maintains its performance. Thus, the antenna is a candidate for moving objects with high speed internet and vehicular tracking.
Improved Structural and Functional Integrity of Bone Health Parameters After Treatment with Consciousness Energy Treated Vitamin D3

The study objective was to investigate the effect of Consciousness Energy Healing-based vitamin D 3 and DMEM medium on bone health. The test items (vitamin D 3 and DMEM), were divided into two parts. One part of each sample was received the Biofield Energy Treatment by Debra Jane Schnitzer and those samples were denoted as the Biofield Energy Treated (BT) samples, while the other parts of each sample were referred as the untreated test items (UT). Parameters such as ALP, collagen, and bone mineralization were performed to evaluate the bone strength in human bone osteosarcoma cells (MG-63). The test samples were found as safe in the tested concentrations by MTT cell viability assay. ALP was significantly increased by 27.75%, 28.21%, and 60% in the UT-DMEM + BT-Test item, BT-DMEM + UT-Test item, and BT-DMEM + BT-Test item groups, respectively at 50 µg/mL compared to the UT-DMEM + UT-Test item group. Moreover, the ALP level was significantly raised by 11.17% and 74.57% in the UT-DMEM + BT-Test item and BT-DMEM + BT-Test item groups, respectively at 100 µg/mL compared to the UT-DMEM + UT-Test item group. Collagen was significantly increased by 54.53% and 115.01% in the UT-DMEM + BT-Test item and BT-DMEM + UT-Test item groups, respectively at 0.1 µg/mL compared to the untreated group. Further, the collagen level was significantly increased by 131.87% (at 1 µg/mL) and 179.77% (at 10 µg/mL) in the UT-DMEM + BT-Test item group compared to the untreated group. Apart from this, the percent of bone mineralization was distinctly increased by 75.94%, 125.79%, and 117.38% in the UT-DMEM + BT-Test item, BT-DMEM + UT-Test item, and BT-DMEM + BT-Test item groups, respectively at 10 µg/mL compared to the untreated group. Additionally, the percentage of bone mineralization was significantly increased by 46.08%, 173.22%, and 171.17% in the UT-DMEM + BT-Test item, BT-DMEM + UT-Test item, and BT-DMEM + BT-Test item groups, respectively at 50 µg/mL compared to the untreated group. Altogether, the Biofield Energy Treated vitamin D 3 was significantly improved the bone health parameters and it could be an alternative approach for nutraceutical supplement to combat vitamin D 3 deficiency and able to fight against various bone-related disorders including rickets, low bone density, osteomalacia, bone and joint pain, bone fractures, osteoporosis, osteoma, osteogenesis imperfecta, Paget’s disease, deformed bones, chondrodystrophia fetalis, stress management and prevention, autoimmune and inflammatory diseases, and anti-aging by improving overall health.
On Fractaquantum Hypothesis

In this contribution, we present the following: restore some of the fractal geometry key elements, introduce an extension of the atom notion, restore the importance of the quantum mechanics which is needed to describe the microscopic world. We introduce the fractaquantum hypothesis, which was presented for the first time at the 5th Congress of the European Union of Systemics at Heraklion in 2002. We discuss also about the acceptance of this hypothesis. Then we develop it in three different directions. The integration of the simple element leads us to a quantum theory of the angel. More complex assembling can be described with the help of graph theory and the emphasising is placed on the importance of the loops in such models. Finally, we shall observe if the fractaquantum hypothesis joined with recent atomic physics experiments help imagine intricate macroscopic states.
Thoughts about Thinking: Cognition According to the Second Law of Thermodynamics

A holistic account of the human brain is provided by the Second Law of Thermodynamics. According to this universal precept, the central nervous system is governed by the quest to consume free energy in the least possible time. The brain is like any other system of nature that has evolved over eons and continues to develop over an individual’s life time. This physical portrayal is singularly appropriate because power-law characteristics as well as oscillatory and at times unpredictable functioning are not exclusive attributes of the brain but are found in other systems throughout nature. The neural network comprises pathways for signal propagation just as other natural systems have pathways for the transmission of energy in various forms. These universalities support the view of the evolution and development of the human brain as a natural thermodynamic process. In a like manner perception, sensation and learning as well as the processes of memory, emotions and consciousness can be regarded as natural expressions of the neural network under the suzerainty of the Second Law. The outcomes of cognitive processes, like other natural processes, are non-deterministic because the interactive effects of flows of energy as signals with differences in energy as their driving forces cannot be separated from each other. This naturalistic framework also provides insight into mental disorders and cognitive defects.
Word Space Models for Web User Clustering and

This study evaluates methods for clustering web users via vector space models, for the purpose of web page prefetching for possible applications of server optimization. An experiment using Latent Semantic Analysis (LSA) is deployed to investigate whether LSA can reproduce the encouraging results obtained from previous research with Random Indexing (RI) and a chaos based optimization algorithm (CAS-C). This is not only motivated by LSA being yet another vector space model, but also by a study indicating LSA to outperform RI in a task similar to the web user clustering and prefetching task. The prefetching task was used to verify the applicability of LSA, where both RI and CAS-C have shown promising results [1, 2, 3]. The original data set from the RI web user clustering and prefetching task was modeled using weighted (tf − idf) LSA. Clusters were defined using a common clustering algorithm (k-means). The least scattered cluster configuration for the model was identified by combining an internal validity measure (SSE) and a relative criterion validity measure (SD index). The assumed optimal cluster configuration was used for the web page prefetching task. Precision and recall of the LSA based method is found to be on par with RI and CAS-C, in as much that it solves the web user clustering and web task with similar characteristics as unweighted RI. The hypothesized inherent gains to precision and recall by using LSA was neither confirmed nor conclusively disproved. The effects of different weighting functions for RI are discussed and a number of methodological factors are identified for further research concerning LSA based clustering and prefetching.
Relationship between Repeated Sprint Ability and Aerobic Fitness in College Volleyball Players

The main purpose of this study was to investigate the relationship between physiological variables related to aerobic fitness and repeated sprint ability (RSA) in college volleyball players. Sixteen male volleyball players (21.1±1.4 years) took part in the study. Players first performed an incremental treadmill run test to determine their maximal oxygen uptake (VO2max ), ventilatory threshold (VT), peak incremental test speed and time to exhaustion. After at least 48 hours, subjects performed an RSA test consisting of 10 × 20-m sprints interspersed with 20 seconds of active recovery, to determine the mean sprint time (RSAmean), the best sprint time (RSAbest) and the fatigue index (FI). RSAmean was significantly negatively correlated with VO 2max (r= −0.73, p 0.05). The results of this study demonstrated that high VO 2max as well as VT has an important contribution to performance during repeated-sprint efforts. These findings suggest that training practices for the development of aerobic components may improve also RSA.