Miracle-dz/UniFAR-FTUs huggingface dataset:
Mixing and Entrainment Characteristics in Circular

Analytical and experimental investigations have been conducted to characterize the performance of “short” ejectors. In short ejectors, the core of primary (motive) flow still exists at the mixing duct exit, and nonuniform mixed flow is discharged from the mixing duct. Due to incomplete mixing, short ejector pumping performance is degraded and cannot be predicted by the existing “long” ejector models. The new analytical short ejector model presented in this paper is based on the control volume analysis and jet expansion model. The secondary (entrained) flow velocity and the corresponding shear layer (between the primary and the secondary flows) growth rate variations along the mixing duct are taken into account. In addition, measurements have been made in ejectors with length ratios (LRs) of two and three for an area ratio (AR) of 1.95; and a LR of two for an AR of 3.08. Velocity profiles at the mixing duct inlet and exit, and static pressure distribution along the mixing duct have been measured with pitot probes and pressure taps. All of the tests have been carried out at a Reynolds number of 420,000. Comparison shows that the new ejector model can accurately predict flow characteristics and performance of short ejectors. For all of the test cases, the velocity profiles at the mixing duct inlet and exit are well predicted. Also, both predictions and measurements show pumping enhancement with increasing mixing duct length. The pumping enhancement is due to the increase in the static pressure difference between the mixing duct inlet and atmosphere as the mixing duct is lengthened. Furthermore, both measured and predicted static pressure distributions along the mixing duct show a kink. According to the analysis, the kink occurs when the outer shear layer reaches the mixing duct wall, and the secondary flow velocity decreases along the mixing duct upstream of the kink and increases downstream of the kink. Thus, the new ejector model can accurately predict not only the integral performance but also different mixing regimes in short ejectors. [DOI: 10.1115/ 1.4029412]
Structure and Temperature Dependence of Electrical Conductivity in Polythiophene Nanoparticles

Polythiophene (PTh) has been synthesized at three different temperatures by oxidation process with ferric chloride as an oxidizing agent. Samples were confirmed to be noncrystalline by XRD studies. SEM images showed an agglomeration of particles in the samples made at 278K and 305K and tubes like structures were observed for sample made at 323K. The optical absorption (UV-Vis) studies indicates two bands for PTh samples synthesised at 278K & 305K and three bands for the one made at 323K . Temperature dependence of DC conductivity has been measured and data analyzed using Mott’s small polaron hopping and variable range hopping models. Activation energies for DC conduction were determined. Density of states obtained by Mott’s(VRH) model fits were found to be quite high compared to elemental semiconductors and polymers.
INEQUALITY IN THE STRUCTURE OF CULTURAL MEANINGS: LEARNING WHILE “BLACK” AND “LATINO”

This research challenges some deeply entrenched ideas about the role of oppositional culture, defined as resistance to “acting white,” in the academic and socioeconomic outcomes for various racial and ethnic minorities. This research offers results with a different articulation of how African American and Latino youths perceive “acting white. ” The results reveal that these youths maintain high educational and career aspirations and do not disdain doing well in school and striving for high achievement. Rather, they create distinctive cultural identities around speech, dress, and interactional tastes and preferences. In this paper, I conclude that these cultural behaviors are the main dimensions of either “acting white” or “ethnic” for many minority youths and suggest how this alternative articulation is connected to school achievement and economic attainment. The analyses are based on a combination of survey and qualitative data collected from a series of in-depth individual and group interviews held with an interethnic, mixed-gender sample of 68 low-income, African American and Latino youth, ages 13 to 20.
FIV 2018-188 CONTROL OF VORTEX SHEDDING FROM A CIRCULAR CYLINDER BY ROTATING WAKE-CONTROL CYLINDERS AT MODERATE REYNOLDS NUMBER

The suppression of vortex shedding of a larger circular cylinder by the interference effect of 8 individually rotating wake-control cylinders equally distributed about its center is investigated by means of three-dimensional numerical simulations at a Reynolds number of 10,000. Visualization of the wakes revealed a complex disruption of the vortex tubes for the higher rotation speeds. A consequent reduction in the mean drag of 84% and the fluctuating lift in 89% was obtained when compared with the reference values of a bare cylinder. The power lost to rotate the control cylinders at the highest rotation speed is lower than the power lost by the system due to drag. Configurations of control cylinder that can suppress vortex shedding may produce more efficient suppressors for flow-induced vibrations.
International Conference on the Application of Physical Modelling in Coastal and Port Engineering and Science ( Coastlab 16 )

In recent years, extreme natural phenomena such as extreme tsunamis have affected populated coastal regions around the Indian and Pacific Oceans and caused significant loss of life and extensive damage to coastal communities. The present study investigates scour mechanisms around a square structure due to an inland-propagating tsunami-like bore using physical modelling. A series of hydraulic bores was simulated using the dam-break method in a flume at the University of Ottawa Hydraulics Laboratory. The dam-break wave was generated by releasing water impounded behind a rapidly-opening swing gate. A video-recording system was used to record the evolution the of scour and vortex structure. Image processing allowed tracking the time and spatial evolution of the scour around the structure. Additionally, characteristics of the bore, including bore depth-time history and bore front velocity for different initial downstream conditions (dry bed vs wet bed) will be presented. Also the parameters affecting local scour will be presented and discussed. KEWORDS: Tsunami scour, Physical modeling, Square structure, Sediment. INTRODUCTION 1 It is well documented that the tsunamis cause substantial erosion and scour along the shore line affected by inundation. The nternational Tsunami Survey Team (ITST, 2005) documented the existence of scour damage around the foundation of a lighthouse tower near the coast of Banda Aceh, Indonesia. Many researches have so far been conducted about scour around coastal structures in a marine environment. In post-tsunami forensic engineering surveys of India and Thailand following the 2004 Great Sumatra Andaman tsunami, researchers were able to document local scour occurrences not only at buildings located close to shore, but also hundreds of meters inland (Nistor et al. (2012); Tonkin et al. (2013)) as shown in Fig. 1 a) b) Fig. 1: Local scour due to tsunami bore around building foundation a) Japan (courtesy of Dr. Ioan Nistor, 2012); b) Local scour, Koh Khao, Thailand. Case SS-4. Tonkin et al. (2013)
The Impact of L1 Transfer on the Interaction of EFL Students with English Prepositions

[Abstract] The aim of the current study is to examine the impact of L1 transfer on the interaction of Jordanian students with English prepositions. Data was elicited from the responses of BA female students to the test developed by the researcher. The study was comprised of a stratified random sample of 50 female students at two Jordanian universities. Findings revealed that transfer from L1 is one of the major sources of EFL learners' errors among Arab Jordanian female EFL students who use the proper prepositions for which equivalents exist in their L1; select improper prepositions if equivalents are not used in their MT; omit prepositions if equivalents are not required in their L1; and add prepositions if equivalents are required in their L1.
Immigrants and the US Wage Distribution ∗

Since the 1980s the stock of immigrants to the US has been rapidly increasing potentially disrupting labor markets across the country. A large body of literature estimates the relative wage impact of immigration on highand low-skill workers, but we know much less about how these effects map onto changes of the earnings structure. I begin with descriptively documenting the evolution of foreign-born workers in the natives’ wage distribution, showing that, over time, they have become increasingly overrepresented in the very bottom. I then undertake two distinct empirical approaches in deepening our understanding of the way foreign-born shape the earnings structure. First, I construct a counterfactual wage distribution with lower immigration levels and estimate reduced-form quantile treatment effects. Second, I build and estimate a standard theoretical model featuring Constant Elasticity of Substitution (CES) technology and skill types stratified across wage deciles. Both analyses uncover similar monotone effects: a one percentage point increase in the share of foreign-born leads to a 0.1-0.2 (0.2-0.3) percent wage decrease (increase) in the bottom (top) decile and asserts no significant pressure in the middle.
Predicting the Response of Insect Pests and Diseases of Arabica Coffee to Climate Change along an Altitudinal Gradient in Mt . Elgon Region , Uganda

Recent studies have predicted an increase in temperature due to climate change which is likely to upsurge pressure from pests and diseases on Arabica coffee, Coffea arabica. Under the future climate change scenarios, elevation gradients can be used as analogues for global warming. Basing on this, we therefore determined the incidence and damage of Arabica coffee pests and diseases along an altitudinal gradient in Mt. Elgon region in order to predict their possible impact under these scenarios. Seven insect pest species were recorded with the white coffee stem borers (WCSB) having the highest incidence of 13%. On the other hand, three diseases were recorded with coffee leaf rust (CLR) having the highest mean severity of 1.9 on a 1-5 scale. Multiple regression analysis showed that the incidence of only WCSB decreased significantly (p=0.0169) with increasing altitude. This implies that under the future climate change scenarios, the impact of this insect pest on Arabica coffee will increase with increase in temperature. Therefore, adaptation mechanisms for climate adversaries such as inter-planting with shade trees should be advanced. However, these tree species should not compete with the coffee as well as promoting pests and diseases.
Battery and super-capacitors based single converter hybrid power pack energy management

Dealing with the energy management of a single converter hybrid power pack involving battery and super capacitor, the real condition simulation and the preliminary experimental results have been hereby given. Through of a suitable management of both super capacitors (Scaps) state of charge and the dc bus voltage, smoothed power demand is assigned to the battery pack, whereas high frequency power demand is managed by the Scaps pack. Because military vehicle application is the target of the related application, security-based constraints namely battery pack temperature, current and voltages thresholds, are taken into account. The developed energy management is applied through 16-bits Microchip microcontroller dsPIC33EP512MU810 by means of CAN and CANopen communication. The presented results need to be refined owing to the sampling time issues of the used CAN bus frames.
Derivation of new Brazilian lineages of human embryonic stem cells under physiological oxygen conditions

The development and application of human embryonic stem (hES) cells is an important experimental tool for understanding differentiation and development, and offer a wide range of potential applications, including prevention, diagnosis and treatment of human diseases. This area is one of the most promising and fascinating contemporary biology. The essential components of the process of embryonic stem cells derivation are the embryos, embryo manipulation methods, feeder cells, culture media, the oxygen level and the general culture conditions in vitro. In 2008, Pereira’s group generated the first hES cell Brazilian lineage. It is important to continue deriving hES cells lines for both basic research and clinical applications due to loss of genetic and epigenetic stability during hES cells culture and the manipulation. Therefore, the more lineages are generated, we will have a clearer idea about what is happening. In the current study, we has generated two lineages of hES cells, designated BR-4 (46, XY) and BR-5 (46, XX), under physiological oxygen condition. To our knowledge, these are the first reported lineages of hES cells derived in South America under physiological oxygen condition, which was fundamental to the consolidation of this research area in our country to study the epigenetic status of these cells.
Inertia‐based spectrum slicing for symmetric quadratic eigenvalue problems

In the quadratic eigenvalue problem (QEP) with all coefficient matrices symmetric, there can be complex eigenvalues. However, some applications need to compute real eigenvalues only. We propose a Lanczos‐based method for computing all real eigenvalues contained in a given interval of large‐scale symmetric QEPs. The method uses matrix inertias of the quadratic polynomial evaluated at different shift values. In this way, for hyperbolic problems, it is possible to make sure that all eigenvalues in the interval have been computed. We also discuss the general nonhyperbolic case. Our implementation is memory‐efficient by representing the computed pseudo‐Lanczos basis in a compact tensor product representation. We show results of computational experiments with a parallel implementation in the SLEPc library.
BIOCHEMICAL STUDIES ON RABBIT MEAT RELATED TO SOME DISEASES

125 rabbits were classified to 5 groups (25 of each) where the first group was considered as control . The other 4 groups were represented by diseased conditions (Abscess, Snuffles, Enteritis and Mange). The collected samples from different farms from Kalubia government were subjected to chemical examination for evaluation of their quality. The results showed marked highly significant decrease in moisture % in case of enteritis. All diseased cases were significantly decreased specially enteritis and mange in protein %. While, the results of diseased conditions appeared no significant change in fat %. There was slightly significant differences between apparently healthy rabbit meat and diseased conditions in carbohydrate %. Also, it was found slightly significance decrease in results of the diseased conditions rabbit meat than the apparently healthy rabbit meat in ash %. The results showed marked alteration in biochemical examination in almost of the diseased condition which render most of these conditions either unfit for human consumption in severe cases or low quality rabbit meat. (BVMJ‐25(1): 88‐93, 2013)
MOLECULAR STUDY OF FMD INFECTED EGYPTIAN BUFFALO CALVES WITH REFERENCE TO ELECTROCARDIOGRAPHY AND CARDIAC BIOMARKERS AS PROGNOSTIC TOOLS

A total of 200 Egyptian buffalo calves aging between 9-11 months previously vaccinated with local trivalent oil inactivated vaccine (O, A and SAT-2), in different locations at Menufyia Governorate showing typical clinical signs of FMD were examined for molecular characterization of FMD virus, electrocardiographic picture (ECG) and cardiac biomarkers. The results of serological tests revealed that incidence of non-structural proteins against natural infection with FMDV was 31.5% in serum samples collected from vaccinated buffalo calves. Moreover, 51.5 % of the samples showed detection of structural proteins against trivalent vaccination. On the other hand, there were no protective antibodies against FMDV in 17 % of the examined samples. ECG of FMD infected calves showed ventricular premature depolarization with flattening of Pwave and increased QRS duration with decrease in its amplitude compared with healthy calves. In FMD infected buffalo calves, there were significant (P < 0.01) increases in (cTnI), (CK-MB), urea, CL and K and there was significant (P < 0.01) decrease in Na levels than that of healthy ones. The identified strains in FMD infected Egyptian buffalo calves were unique and different from the vaccinal and other Egyptian strains as well as they were clustered with Topotype ME-SA. Cardiac enzymes along with ECG can be used as useful prognostic tools in FMD infected Egyptian buffalo calves.
Relationship Between School Suspension and Student Outcomes : A Meta-Analysis Amity

Although the association between school suspension and deleterious outcomes is widely acknowledged, policy and practice need to be informed by an evidence base derived from multiple studies revealing consistent trends. This meta-analysis aims to address this void by examining the degree to which different types of school suspensions (in-school versus out-of-school) are associated with both academic achievement and school dropout, while concurrently examining study or participant characteristics that moderate these relationships. Data sources included peer-reviewed and non-peer-reviewed studies from 1986– 2012 obtained via bibliographic databases. A meta-analysis was conducted on 53 cases from 34 studies. The results revealed a significant inverse relationship between suspensions and achievement, along with a significant positive relationship between suspensions and dropout. Furthermore, study or participant characteristics and type of suspension significantly affected the relationship between suspensions and the outcome variables. Implications for policy, practice, and research are emphasized. Exclusion from school is by no means a new educational practice. Although it has been used in various forms throughout the history of U.S. schooling, the use of suspensions as a deterrent for misbehavior increased widely beginning in the 1970s (Losen & Skiba, 2010). Whereas the term expulsion refers to the more permanent removal of a student from the school by the superintendent, the term suspension generally refers to the denial of school attendance for a specific amount of time that may be 10 days or less. Although suspension most often refers to out-of-school suspension (OSS), there also has been an increasing trend toward in-school suspension (ISS). ISS often involves the student being removed to a separate classroom for at least a full day, where he or she must complete work and cannot participate in mainstream activities alongside peers (Hyman, 1997). The rationale undergirding both OSS and ISS use is that these practices will serve as punishment, decreasing the likelihood of future negative behaviors. However, some students may actually find the conditions of school more punishing than removal (Hyman, 1997). Although there is evidence of negative outcomes associated with suspension, it is unPlease address correspondence regarding this article to Amity L. Noltemeyer, Miami University, 210 E Spring St, Oxford, OH 45056; e-mail: anoltemeyer@miamioh.edu Copyright 2015 by the National Association of School Psychologists, ISSN 0279-6015, eISSN 2372-966x School Psychology Review, 2015, Volume 44, No. 2, pp. 224–240
Fecundity of fresh water fish Cirrhina reba ( Hamilton , 1822 ) ( Cyprinidae : Cypriniformes )

The freshwater fish, Cirrhina reba (Ham.) is one which is commonly known as “Raikhor” or “Aikhor” or Bangla. Although the fish is rarely available is the estern part of the country but it is abundant available in the western and north western part of Bangladesh. The fish in these areas are cultured in ponds along with major carps like Labeo rohita, Catla catla etc. Perhaps because of the availability of its spawn in the rivers, the Padma and the Jamuna. The species is generally silverish in color. The scale is darkest on the upper and lower edges formally. Bluish bands above and 2 or 3 rows below the lateral line. Ventral side is white, dorsal and caudal grey or yellowish. Tip of the pelvic and anal are orange.
Nigeria EFFECT OF COTTONSEED MEAL INCLUSION IN DIETS OF Catla catla ( HAMILTON , 1822 )

Five diets designated as CSM0, CSM5, CSM10, CSM15 a nd CSM20 with 0, 5, 10, 15 and 20% of cottonseed meal inclusion levels respectively wer e f d to Catla catla (Hamilton, 1822) for 3 months and the effect studied. All the formulated diets we re isonitrogenous with 30% crude protein. Feed was given at the rate of 5% of the body weight and anim ls were fed twice a day throughout the 3-month duration. Significant difference was observed in th e Growth, Protein Efficiency Ratio and Condition Factor of the fishes. Better growth performance was ob erved at 5% inclusion of CSM. However, no significant differences (P >0.05) were observed in the growth, survival and condition factor at inclus ion levels of 5% and 10% CSM in the diet. Hence, it is recommended that CSM can be included upto10% level in the diets of catla. Further inclusion of C SM results in growth depression.
Effects of sociodemographic and economic factors on food expenditure in a prefecture of Greece

During the last decades many sociodemographic and economic changes have taken place in the Greek countryside. These changes are in parallel with the new trends in household expenditure, such as decreased food expenditure, increased ready food consumption, decreased number of different food items consumed at home and a shift from time-intensive traditional foods to time-saving foods. The aim of this paper is to analyze food expenditure patterns in a prefecture of Greece with special emphasis on some selected characteristics that determine the living conditions of the Greek household. A door-to-door questionnaire survey was conducted to collect primary data for this study. The questionnaire gathered information on food expenditure, income and major sociodemographic characteristics (i.e. age, education level, household size, region of residence, number of earners, occupation etc) of 316 randomly selected married households. Regression models were used to estimate the impact of the above characteristics on the demand for food (food at home and food away from home). Income appeared to be the most important variable explaining the demand for food among Greek consumer units. Other sociodemographic characteristics such as age, education level, household size, presence of children, region of residence were also significant in explaining the demand for food. ______________________________ *Corresponding author (Tel.: +32-10-9549217, Fax: +32-10-9577050, e-mail: capost@hua.gr)