Miracle-dz/UniFAR-FTUs huggingface dataset:
Prediction of surface roughness in single point incremental forming of AA 3003-O alloy using artificial neural network

Single point incremental forming (SPIF) is an emerging sheet metal forming process. Though the process is quite flexible as it does not require dedicated tools and dies, it has limitation with respect to surface quality of the finished product. In the present work, a statistical experimental investigation is carried out to determine the factors which profoundly affect the process performance. Subsequently, artificial neural network (ANN) approach is being utilised for prediction of the surface quality in relation with six input variables: step depth, feed rate, spindle speed, sheet thickness, wall angle and density of lubricant. The generalised model is being validated experimentally and is found in good agreement with experimental data.
Mobile Learning Application Design

Following the development of smart mobile technology and the dissemination of smart devise, the learning mode under information technology is known a huge evolution. Mobile learning recently turned into the research hotspot in commercial and academic field. The aim of this article is to help improving mobile teaching in education institution, to offer methods and measures of mobile teaching design for teachers, and to provide guidelines of mobile learning to students. Also, this article concludes the discussion on how to design mobile learning platform and how to implement it through the 3 aspects of institution, teacher and student; how to integrate mobile learning to the course design regarding different disciplines; what kind of teaching activities are suitable for mobile learning.
Experimental Social Sciences Consumer reaction to information on food additives : Evidence from an eating experiment and a field survey July , 2008 Grant-in-Aid for Scientific Research on Priority Areas

Both presence/absence of food additive and provision of accurate information about food additive are considered as important factors affecting individuals’ purchase decisions. In this paper, we apply both laboratory experiment and field survey approaches to investigate how individuals value a kind of food additive (i.e. sodium nitrite) presented in ham sandwich and whether the provision of information about sodium nitrite affects individuals’ choice. The results suggest that in both laboratory experiment and field survey samples, participants do not favor the use of sodium nitrite per se, no matter whether the detailed information is provided or not. Moreover, the willingness to pay values for ham sandwich without sodium nitrite are estimated to be lower in the experiment sample and higher in the survey sample after a set of negative and positive information is provided, implying that the effect of information provision differs between these two methods. In addition, further investigation of the participants’ reasons choosing ham sandwich indicates that the information related to flavor seems influence more on their choice behavior in the experiment sample, while the information associated with health risk is like to play a relatively more important role in the survey sample. Finally, we also find that a number of socioeconomic characteristics affect the participants’ choice in ham sandwich in the survey sample.
Effectiveness of the Pressure-Load Meter in Measuring Firmness of Tomato Fruit1

The Pressure-Load (P-L) Meter, a small portable instrument, was as sensitive as an Instron Machine in measuring firmness of ripening tomato fruit. Firmness, as measured with the P-L Meter, was significantly correlated with changes in water and NaOH-soluble pec tic substances of ripening fruit.
Gender Differences in Firm Size, Growth, and Persistence: A Review of Research Literature on Women’s Entrepreneurship in the Information Technology Field

Are there differences in the success of firms started by men and women? The answer seems to be yes, although it depends to some extent on how “success” is defined. Is “success” faster growth, larger size, and greater persistence, as researchers thought in the 1970s and 1980s? Or is “success” how well performance matches the entrepreneur’s objectives, as more recent research argues? Even when using the same definition of success, research offers little consensus about gender differences in entrepreneurial success.
Wave attractors in a smooth convex enclosed geometry

The equations governing monochromatic internal or inertial waves in an enclosed two-dimensional basin lead in two dimensions to a hyperbolic equation in spatial dimensions. The wave rays have a fixed slope with respect to gravity or the rotation axis, depending on the frequency of the wave as compared to the strength of the stratification and the rotation rate of the fluid. This angle is conserved on the wave’s reflection at the boundary. The slope of the rays is denoted by κ. Depending on κ and the geometry, either all wave rays are periodic (standing wave), no characteristic is periodic, or there is a limited number of periodic orbits to which wave rays are ‘attracted’. In this study, the boundary is formed by the convex part of a third degree curve. Depending on a parameter ε, this curve varies between a circle ( ε = 0) and a triangle ( ε = 2), for ε < 2 it is completely smooth. The axis of symmetry ( z-axis) is parallel to the direction of gravity/rotation axis, which are taken antiparallel. For the triangle and the circle the behaviour is well known: the corners of the triangle can attract wave rays, for the circle either all wave rays are periodic, or no wave ray is periodic, so that attractors do not exist. In the (κ, ε)-parameter space, investigation of the strength of convergence of characteristics yields Arnol’d tongues, stemming from ε = 0, broadening for increasing ε and finally all converging toκ = √3 for ε = 2. Tongues with attractors are bounded by values ofκ for which wave rays either connect the top and bottom of the boundary or connect its critical points, where the wave ray is directly reflected back onto itself. As compared to nonsmooth geometries, corners are a degenerate form of critical points. Only forκ = √3 all wave rays return back onto themselves for all values of ε due to an additional symmetry, resulting in standing wave behaviour. If the symmetry of the curve with respect to the z-axis is removed by rotating it, the ordering of the periods of successive attractors changes and there is no standing wave mode. A general criterion, based on first order perturbation theory, is derived that states whether attractors exist for geometries that are small perturbations of the circle. For the geometry under consideration, first order perturbation theory is inconclusive and second order perturbation theory is used to verify the existence of the strongest attractor and to describe the Arnol’d tongue for small values of ε. © 2003 Elsevier B.V. All rights reserved. PACS: 47.35. +i; 47.54. +r; 92.10. Dh
development of English verbal gerunds *

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Learning Path Tracking for Real Car-like Mobile Robots From Simulation

In this paper we propose a Reinforcement Learning (RL) algorithm for path tracking of a real car-like robot. The RL network is trained in simulation and then evaluated on a small racing car without modification. We provide a big number of training data during off-line simulation using a random path generator to cover different curvatures and initial positions, headings and velocities of the vehicle for the RL agent. Comparing to similar RL based algorithms, we utilize Convolutional Neural Network (CNN) as image embedder for estimating useful information about current and future position of the vehicle relative to the path. Evaluations for running the trained agent on the real car show that the RL agent can control the car smoothly and reduce the velocity adaptively to follow a sample track. We also compared the proposed approach with a conventional lateral controller and results show smoother maneuvers and smaller cross-track errors for the proposed algorithm.
Clinical Study Extrahippocampal Desynchronization in Nonlesional Temporal Lobe Epilepsy

Although temporal lobe epilepsy (TLE) is traditionally associated with both hypersynchronous activity in the form of interictal epileptic discharges and hippocampal sclerosis, recent findings suggest that desynchronization also plays a central role in the dynamics of this pathology. The objective of this work is to show the imbalance existing between mesial activities in patients suffering from mesial TLE, with normal mesial structures. Foramen ovale recordings from six patients with mesial TLE and one with lateral TLE were analyzed through a cluster analysis and synchronization matrices. None of the patients present findings in the MRI presurgical evaluation. Numerical analysis was carried out in three different situations: awake and sleep interictal and also during the preictal stage. High levels of desynchronization ipsilateral to the epileptic side were present in mesial TLE patients. Low levels of desynchronization were present in the lateral TLE patient during the interictal stage and almost zero in the preictal stage. Implications of these findings in relation with seizure spreading are discussed.
A STUDY ON THE IMPACT OF MATERNAL STATUS ON CHILD NUTRITION AMONGST THE ANAL NAGA TRIBE OF CHANDEL DISTRICT , MANIPUR

The present study was undertaken to understand the nutritional status of the Anal Children of 1-5 years of age and draw out the impact of maternal status on child nutrition.Data for the present study were randomly selected. The data comprised of 129 children of 1-5 years of age from 89 mothers. It is a cross-sectional study, consisting of the anthropometric measurements like height,weight,head circumference,mid-upper arm circumference, chest circumference and calculated BMI.Body Mass Index(BMI) of the women reveals that underweight mothers are of the highest percentage frequency of 36.0% and Obese-II mothers are the lowest(2.2%). Underweight mothers show the highest percentage frequency of children suffering from moderate to severe malnutrition(40.9%) and the least by obese-I mothers(7.4%). 74.4% of the Anal children suffer from mild to severe malnutrition . i.e. 48.1% of mild malnutrition,20.9% of moderate malnutrition and 5.4% of severe malnutrition. The present study reveals that mother’s nutritional status, educationalstatus, occupational status and nutritional knowledge has an impact on the nutritional status of the Anal children of 1 to 5 years.
ON DYNAMIC CROSS INTERACTION OF STRUCTURES BY EARTHQUAKE OBSERVATION AND FORCED VIBRATION TEST

NUPEC has been carrying out experimental studies to understand basic Soil-Structure Interaction (SSI), “Model Test on Dynamic Cross-Interaction Effects of Adjacent Structures (19942001)”. The study is currently ongoing. For this test we have constructed BWR reactor building models of 1/10 scale and performed vibration tests and earthquake observations. In this paper, we first present earthquake observation results including examples of an adjacent building effect, one of the typical SSI effects. Secondly, we present an analytical SSI model for use in simulation analyses of the vibration tests and earthquake observations. In the simulation of earthquake observations, the most important issue is the modeling of geometrical condition around the building specimens. It is found that certain modeling parameters exert a larger influence on the analytical results.
Pertussis in Soldiers, Israel

trophoresis. Patterns were compared visually with reference patterns (6). From January 1, 2003, to March 31, 2004, a total of 44 of 124 male rectal swabs were positive for C. trachomatis. Of those, 38 were identified as belonging to the L2 serotype, which confirms the diagnosis of rectal LGV. Epidemiologic information was retrospectively obtained by clinicians through review of medical records, telephone interview, or both. A complete history was available for 14 of the 38 cases. All 14 men reported unprotected anal sex with anonymous male sex partners in France, and none reported a stay in an LGV-endemic area. Their mean age was 40 years (31–50); 8 were HIV-infected, and 9 had another concomitant STD. The mean duration of symptoms before LGV diagnosis was 50 days (range 11–120 days). All 14 patients had symptoms of acute proctitis, including rectal pain, discharge, and tenesmus, and 3 (all HIV-infected) had fever. Deep, extended rectal ulcerations were reported in 8 patients, 3 of whom were HIV-infected and had lesions suggestive of rectal carcinoma. In 1 patient in whom a late diagnosis was made 4 months after the onset of symptoms, a rectal tumorlike stricture was observed. All 14 patients were treated with tetracycline for a mean duration of 16 days (range 10–60 days). An information campaign among microbiologists and clinicians and a sentinel LGV surveillance system were launched in April 2004. Subsequently, LGV was diagnosed in 65 additional male patients, some retrospectively. In total, rectal LGV was diagnosed in 103 patients from July 2002 to August 2004 (Figure). Prompt diagnosis and treatment is indeed paramount to prevention and control. Diagnosis may be further hampered because rectal LGV may mimic other conditions such as rectal carcinoma or Crohn disease. Treatment duration should be no shorter than 21 days, and follow-up examinations should be conducted until all signs and symptoms have resolved (7,8). If left untreated, rectal LGV could lead to serious complications such as rectal stricture (1). If recently exposed to infection, sexual contacts should receive prophylactic treatment to prevent reinfection and to eliminate a potential reservoir. The emergence of rectal LGV, characterized by deep mucosal ulcerations and frequently occurring in HIV-infected men who have sex with men, is a serious concern for the gay community in Europe.
Gambling, Saving, and Lumpy Expenditures: Sports Betting in Uganda

Demand for large and indivisible, or “lumpy”, expenditures creates need for liquidity. For people in developing countries, acquiring this liquidity often requires choosing among high-cost strategies. I conduct a study with 1,715 bettors in Kampala, Uganda, to show that sports betting is being used as an alternative to conventional liquidity generation strategies such as saving or credit. First, I document that, despite expected losses of 35-50%, participants view betting as a likely source of liquidity for desired lumpy expenditures and use a natural experiment to show that this is not just cheap talk: winnings increase both the size and likelihood of making such expenditures. Second, I use a randomized field experiment to show that provision of a simple commitment-savings technology causes a 26% reduction in a revealed preference measure of betting demand. I then conduct two lab-in-the-field experiments to isolate the role of betting as a mode of liquidity generation. Increasing the salience of a desired lumpy expenditure causes an increase in betting demand by 17.2%, and a budgeting exercise decreases betting demand by 34.9% for people who learn that they could save more than previously believed. Back-of-the-envelope calculations suggest that betting to create liquidity may be a rational response for people with low ability to save. ∗Department of Agricultural and Resource Economics, University of California, Berkeley. I am deeply grateful to my adviser, Jeremy Magruder, and give special appreciation to Elisabeth Sadoulet. I have benefited from invaluable feedback and support from Michael Anderson, Pierre Bachas, Patrick Baylis, Peter Berck, Lauren Bergquist, Josh Blonz, Fiona Burlig, Alain de Janvry, Aluma Dembo, Seth Garz, Tarek Ghani, Marieke Kleemans, Ken Lee, David Levine, Ethan Ligon, Aprajit Mahajan, Craig McIntosh, Ted Miguel, Jon Robinson, Leo Simon, Chris Udry, Liam Wren-Lewis, and Bruno Yawe. I would also like to thank Antoine Guilhin, Jackline Namubiru, Amon Natukwatsa, and Innovations for Poverty Action for excellent work implementing the study. This project would not have been possible without generous funding support from the NSF, CEGA’s EASST Collaborative, the Rocca Center, the AAEA, and the Institute for Money, Technology, and Financial Inclusion. All errors are my own. The most recent version and online appendix can be found at www.sylvanherskowitz. com/jmp.html. Email: sherskowitz@berkeley.edu. Cell: (207) 512-6649.
Effects of Urban Green Space on Environmental Health, Equity and Resilience

Modern urban life style is associated with chronic stress, insufficient physical activity and exposure to anthropogenic environmental hazards. Urban green space, such as parks, playgrounds, and residential greenery, can promote mental and physical health and reduce morbidity and mortality in urban residents by providing psychological relaxation and stress alleviation, stimulating social cohesion, supporting physical activity, and reducing exposure to air pollutants, noise and excessive heat. This chapter summarizes the pathways that link green spaces to health and wellbeing, and discusses available evidence of specific beneficial effects such as improved mental health, reduced risks of cardiovascular disease, obesity, diabetes and death, and improved pregnancy outcomes Specific attention is given to benefits of urban green space for disadvantaged groups and their impacts on health equity. Potential health risks associated with urban green spaces are also discussed along with approaches to reducing or eliminating these risks through proper design and maintenance of green spaces.
Salvo Severe Air Pollution and School Absences : Longitudinal Data on Expatriates in North China NOVEMBER 2017

NOVEMBER 2017 IZA DP No. 11134 Severe Air Pollution and School Absences: Longitudinal Data on Expatriates in North China* Little is known about how children of high-income expatriate families, often from rich nations, adapt to temporary residence in a severely polluted city of the developing world. We use a six-year panel of 6,500 students at three international schools in a major city in north China to estimate how fluctuation in ambient PM2.5 over the preceding fortnight impacts daily absences. Our preferred estimates are based on the exclusion restriction that absences respond to atmospheric ventilation such as thermal inversions only through ventilation’s effect on particle levels. A large and rare 100 to 200 μg/m3 shift in average PM2.5 in the prior week raises the incidence of absences by 1 percentage point, about one-quarter of the sample mean. We find stronger responses for US/Canada nationals than among Chinese nationals, and among students who generally miss school the most. Overall responses are modest compared to the effect on absences from more moderate in-sample variation in pollution estimated for the US using aggregate data. Using school absence patterns as a window into short-run health and behavior, our study suggests that high-income families find ways to adapt, likely by moving life indoors, even if temporary residence in north China comes at the expense of long-term health. JEL Classification: I18, J24, Q51
Production and Chemical evaluation of Bioethanol derived From White Cocoyam ( Colocasia Antiquorium ) and Sweet Potatoes ( Ipomoea Batatas ) cultivars

The production and application of bioethanol from Ipomoea Batatas (sweet potatoes) and colocasia antiquorium (white cocoyam) for the synthesis of ethylbenzoate was investigated. 1kg each of the feedstock was washed peeled and grated using mechanical grater and gelatinized. The gelatinized sample was subjected to a two stage enzyme hydrolysis using Industrial enzymes namely alpha amylase for liquefaction and amylo-glucosidase for saccaharification to produce fermentable sugar. The hydrolysed sample was then fermented with industrial baker’s yeast S.cerevisea. The fermented liquor was distilled with simple distillation set-up and further distilled with fractionating column to obtain purer liquor. The FT-IR spectra, specific gravity (0.8113, 0.8136), refractive index (1.3608, 1.3610) for cocoyam and sweet potatoes respectively showed that the alcohol produced was ethanol when compared with the standard values . The bioethanol products were then used to synthesize ethyl benzoate.
The Value of Intermediation in the Stock Market

Brokers play a critical role in intermediating institutional transactions in the stock market. Despite the importance of brokers, we have limited information on what drives investors’ choices among them. We develop and estimate an empirical model of broker choice that allows us to quantitatively examine each investor’s responsiveness to execution costs, access to research, and order flow information. Studying over 300 million institutional trades, we find that investor demand is relatively inelastic with respect to trading commissions and that investors are willing to pay a premium for access to formal (top research analysts) and informal (order-flow information) research. There is also substantial heterogeneity across investors. Relative to other investors, hedge funds tend to be more price insensitive, place less value on sell-side research, and place more value on order-flow information. Using trader-level data, we find that investors are more likely to execute trades through intermediaries who are located physically closer and are less likely to trade with those that have engaged in misconduct in the past. Lastly, we use our empirical model to investigate soft-dollar arrangements and the unbundling of equity research and execution services related to the MiFID II regulations. We find that the bundling of execution and research potentially allows hedge funds and mutual funds to under-report management fees by 10%.
ScatterCache: Thwarting Cache Attacks via Cache Set Randomization

Cache side-channel attacks can be leveraged as a building block in attacks leaking secrets even in the absence of software bugs. Currently, there are no practical and generic mitigations with an acceptable performance overhead and strong security guarantees. The underlying problem is that caches are shared in a predictable way across security domains. In this paper, we eliminate this problem. We present SCATTERCACHE, a novel cache design to prevent cache attacks. SCATTERCACHE eliminates fixed cache-set congruences and, thus, makes eviction-based cache attacks unpractical. For this purpose, SCATTERCACHE retrofits skewed associative caches with a keyed mapping function, yielding a security-domaindependent cache mapping. Hence, it becomes virtually impossible to find fully overlapping cache sets, rendering current eviction-based attacks infeasible. Even theoretical statistical attacks become unrealistic, as the attacker cannot confine contention to chosen cache sets. Consequently, the attacker has to resort to eviction of the entire cache, making deductions over cache sets or lines impossible and fully preventing highfrequency attacks. Our security analysis reveals that even in the strongest possible attacker model (noise-free), the construction of a reliable eviction set for PRIME+PROBE in an 8way SCATTERCACHE with 16384 lines requires observation of at least 33.5 million victim memory accesses as compared to fewer than 103 on commodity caches. SCATTERCACHE requires hardware and software changes, yet is minimally invasive on the software level and is fully backward compatible with legacy software while still improving the security level over state-of-the-art caches. Finally, our evaluations show that the runtime performance of software is not curtailed and our design even outperforms state-of-the-art caches for certain realistic workloads.