Miracle-dz/UniFAR-FTUs huggingface dataset:
ANALYSIS OF THE RESPONSE OF A CRACKED JEFFCOTT ROTOR TO AXIAL EXCITATION

The coupling of lateral and longitudinal vibrations due to the presence of transverse surface crack in a rotor is explored. Steady state unbalance response of a Jeffcott rotor with a single centrally situated crack subjected to periodic axial impulses is studied. Partial opening of crack is considered and the stress intensity factor at the crack tip is used to decide the extent of crack opening. A crack in a rotor is known to introduce coupling between lateral and longitudinal vibrations. Therefore, lateral vibration response of a cracked rotor to axial impulses is studied in detail. Spectral analysis of response to periodic multiple axial impulses shows the presence of rotor bending natural frequency as well as side bands around impulse excitation frequency and its harmonics due to modulations caused by rotor running frequency. It is concluded that the above approach can prove to be a useful tool in detecting cracks in rotors.
Public vs. Private Cyberbullying Among Adolescents

st Cyberbullying is a 21 century public health threat that appears to become more prevalent with increasing connectivity to electronic and mobile technologies (Abouajoude, Savage, Starcevic, & Salame, 2015). Cyberbullying has been associated primarily with adolescent populations who target and victimize each other through electronic technologies, such as social media, email, and text messaging (Abouajoude et al. 2015; Richards, Caldwell, & Go, 2015). As these technologies grow and expand through greater internet accessibility and a growing number of social media platforms available to adolescents, the opportunities for cyberbullying behavior increase as well. One issue scholars have wrestled with is the potential similarities and differences between traditional bullying and cyberbullying (Kubiszewski, Fontaine, Potard, and Auzoult, 2015; Thomas, Connor, & Scott, 2015), and how cyberbullying should be defined in particular (Abouajoude et al., 2015; Kowalski, Giumetti, Schroeder, & Lattanner, 2014; Mehari, Farrell, & Le, 2014; Selkie, Fales, & Moreno, 2016; Thomas, Connor, & Scott, 2015; Ybarra, Boyd, Korchmaros, & Oppenheim, 2012). As research into the phenomenon of cyberbullying has grown, a number of variables related to and potentially mediating or moderating the frequency and effects of cyberbullying have been examined. These include factors of moral values and moral disengagement, intellectual and developmental disabilities, learning disabilities, high-risk environments, parental support and supervision of adolescents, digital bystanders who may witness cyberbullying, exposure to anti-social material, emotional factors and issues, prior experience with cyberbullying, classroom norms and indirect social influence factors, social likeability, compulsive internet use, teacher classroom behavior, and age and gender. As research has blossomed examining these various aspects of cyberbullying behavior in recent years, it perhaps comes as no surprise that there are number inconsistencies and conflicting research results reported. The present study aims to address some of these inconsistencies by examining a national random sample of adolescents who have experienced cyberbullying behavior as victims.
On the water delivery to terrestrial embryos by ice pebble accretion

Standard accretion disk models suggest that the snow line in the solar nebula migrated interior to the Earth's orbit in a late stage of nebula evolution. In this late stage, a significant amount of ice could have been delivered to 1 AU from outer regions in the form of mm to dm-sized pebbles. This raises the question why the present Earth is so depleted of water (with the ocean mass being as small as 0.023% of the Earth mass). Here we quantify the amount of icy pebbles accreted by terrestrial embryos after the migration of the snow line assuming that no mechanism halts the pebble flow in outer disk regions. We use a simplified version of the coagulation equation to calculate the formation and radial inward drift of icy pebbles in a protoplanetary disk. The pebble accretion cross section of an embryo is calculated using analytic expressions presented by recent studies. We find that the final mass and water content of terrestrial embryos strongly depends on the radial extent of the gas disk, the strength of disk turbulence, and the time at which the snow lines arrives at 1 AU. The disk's radial extent sets the lifetime of the pebble flow, while turbulence determines the density of pebbles at the midplane where the embryos reside. We find that the final water content of the embryos falls below 0.023 wt% only if the disk is compact ( 0.5-2 Myr) snow-line migration.
Sustainable techniques for thermal comfort in buildings designed used by worshipers

Thermal comfort in building is a trendy that has been under investigation by many researchers. The mosque, for Muslim worshippers, is one of the most popular religious buildings. The demand of new mosques is continuously increasing due to the increasing number of Muslims population and growth in both economic and urban land escape. Recently, there have been a reasonable number of researches that have been investigating the thermal performance of mosque buildings. As a matter of fact, the location of the mosque and the climate play key roles on mosque building thermal performance. Additionally, mosque buildings are unique because of the intermittent operation pattern and the varying number of the users, which require rather controlled heating or cooling strategies. Sustainable energy techniques are keystone that ensures low energy consumption and provide better indoor environment for users of buildings. On the other hand due to environmental pressure to suppress global warming, more energy efficient and sustainable buildings design is one of the current issues in building industries. This research explores application of sustainable technologies for mosque buildings in hot climate zone. A number of mosque buildings in different regions, time frame and climates have been studied, and application of passive techniques on these cases have been evaluated. Performance of these techniques on roofs including building insulation, shading and green roofing have been analysed taking into account the climate and building specifications. The preliminary results obtained from this research clearly indicate that, there are design correlations and guidelines to be established for the architects and mosque buildings designers under any given climate for a sustainable mosque building design. Use of these guidelines also have potential of financial saving appropriately applied in mosque buildings in hot arid climate.
Sharp one-weight and two-weight bounds for maximal operators

We investigate the boundedness of the fractional maximal operator with respect to a general basis on weighted Lebesgue spaces. We characterize the boundedness of these operators for one-weight and two-weight inequalities extending the work of Jawerth. A new two-weight testing condition for the fractional maximal operator on a general basis is introduced extending the work of Sawyer for the basis of cubes. We also find the sharp dependence in the two-weight case between the operator norm and the testing condition of Sawyer. Finally, our approach leads to a new proof of Buckley’s sharp estimate for the Hardy–Littlewood maximal function.
DITROPHIC INTERACTION BETWEEN GLOMUS MOSSEAE AND PHYTOPHTHORA INFESTANS I N JUTE MALLOW ( CORCHORUS OLITORIUS ) SEEDLINGS AT DIFFERENT AGES

Corchorus olitorius is one of the cheapest sources of minerals and vitamins being rich in folic acids used for removal of folacin deficiency in pregnant women in Africa. Proper supply of this vegetable is affected by soil-borne pathogens, causing root-rot, damping off of seedlings, or other diseases in plants. This study, ditrophic interaction between Glomus mosseae fungus and Phytophthora infestans and their subsequent effects on the growth of jute mallow plants at different ages was carried out both in the laboratory and greenhouse. Six different treatment factors were used with three replicates for each treatment in Randomized Complete Block Design (RCBD). At different ages of the seedlings, different measurements of the growth parameters were taken as agronomic data. The collected data were subjected to the Analysis of variance (ANOVA) using the Statistical Analysis System (SAS). At different ages (4, 6, and 8 weeks), inoculation with P. infestans significantly reduced the growth parameters of jute mallow, in contrast to the growth response and biomass of jute mallow seedlings inoculated with G. mosseae. This was found to be significantly higher than that of non-mycorrhizal plants, both in the presence and absence of the pathogen in the greenhouse. Regression analysis of this study shows that there is significant difference in the number of weeks among the growth parameters; it reveals a coefficient of determination (R2) that is near perfect fit while treatments show significant difference based on the increase in ages of the jute mallow seedlings. It can then be concluded that, Glomus mosseae fungus acting as a bio-protective agent was able to suppress the incidence and severity of Phytophthora infestans in their ditrophic interaction. It also enhanced the growth parameters of jute mallow seedlings with respect to the age of the seedlings and time of inoculations.
Prediction of Ship Turning Maneuvers in Constant Wind and Regular Waves

A ship usually performs maneuvers under the influence of external forces and moments, such as wind, waves, and current. Therefore, it is important to understand the maneuvering behavior of ships under the action of external forces. This paper discusses the turning maneuvers of an Indonesian roro ferry under the combined influence of constant wind and regular waves using the mathematical modelling group (MMG). The ship’s position relative to the wave trough is added to the original MMG model to estimate the exciting forces and moment induced by the waves. The results of a numerical simulation show that the effect of wave height on turning ability is more significant for a small wavelength; this effect decreases as the wavelength increases. The effect of wavelength on the sway force and yaw moment is more significant compared with its effect on the surge force. The ship’s initial position relative to the wave trough does not have a significant effect on the turning characteristic and it can be neglected for the present study’s subject ship. Overall, the results of the present work compare well with published data.
Reproductive characteristics of Crioulo Lageano breed bulls (Bos taurus) at puberty

The aim of this research was to evaluate pubertal development characteristics of Crioulo Lageano breed bulls (n = 10) using morphometric measurements and semen analysis, to identify factors that can be used to estimate age at puberty in this locally adapted breed. Monthly measurement of body weight and fortnightly measurement of scrotal circumference, chest girth, testicular length, width, thickness, and volume were recorded for each of the 10 Crioulo Lageano breed bulls, which were between 10 and 20 months old. During this period, semen samples were collected every two weeks using electroejaculation method and analyzed physically and morphologically. The ages of the appearance of first spermatozoa in the ejaculate (FSE), the first motile spermatozoa in the ejaculate (FSEM), seminal puberty (PUB) and total detachment between glans penis and prepuce (DPP) were ascertained. Crioulo Lageano bulls reached puberty at 14.1 ± 2.0 months old with lower weight and larger testicles than those of other bovine breeds. Similarly, the period from FSEM to PUB was shorter and the period from FSE to FSEM was longer than those reported for other breeds. The most important characteristics studied in order to estimate puberty age in Crioulo Lageano bulls were the measures of testicular length, width, and volume. These parameters can be used as criteria to select young bulls as sires.
Stakeholders’ Perceptions and Predictions of Stock Exchange Demutualization: The Case of Kuwait Stock Exchange

In this paper, we investigate the perceptions of various stakeholders in relation to the benefits stated in the new capital markets authority law (CMAL) to be achieved when Kuwait Stock Exchange (KSE) is demutualized. We use a survey questionnaire to solicit their agreement on the achievement of specific benefits after six years of activation. Factor analysis was used to extract four new constructs from the collected responses. Market harmony is the construct elected to be the independent variable affecting three dependent variables: stability, corporate governance and attractiveness variables. The results indicate that the different stakeholders have the same perception that privatization of KSE will lead to the achievement of all benefits promised. Furthermore, all three dependent variable are found to be significantly affected by market harmony. These results contradict with the results of an earlier study of the same research project on the relationship between firm performance and market reforms. We provide discussions of the results and further implications.
An assessment of dynamic pressure in buried tanks subjected to seismic loadings

The seismic performance of storage tanks is a matter of special importance, extending beyond the economic value of the tanks and contents. This has led to attention of many researchers due to the seismic behavior of tanks buried in the soil. Because of the interaction between soil and structure during an earthquake, dynamic analysis of such structures is very important that must be considered. In this paper, according to the interaction effect of soils and structures, under the time history record, seismic behavior of concrete cubic buried tanks has been analyzed using the finite element software ABAQUS. In this process circular and cubic tanks have been studied and the impact of changes in parameters such as earthquake and quantity of water in tanks on pressure on tank's wall has been studied.
A Preliminary Study of International Student Perceptions of Online versus Face-to-Face Education Web Appendix

As higher education institutions continue to integrate online education into their curricula, different cultural perspectives on the value of online versus face-to-face education will undoubtedly have an impact on continued proliferation. For example, some nations believe online education is inferior to traditional education and will not accept credentials acquired through online education (Asunka, 2008). Unfortunately, research on this topic is currently lacking. Similar to another study of business students perceptions (Fish & Snodgrass, 2014), this project proposes to study a sample of international students to examine differences in perceptions between online and face-to-face education. Perceptions are explored with respect to student characteristics (such as age, gender or familiarity with online courses) and program characteristics (such as the amount of rigor or the ease of cheating). 68 The BRC Academy Journal of Business Vol. 5, No. 1 Results have implications for administrators and instructors especially as US institutions endeavor to attract new international students to their online programs.
Effect of Different Levels of Vitamin E and Selenium on Economic Performance of Japanese Quails

The combination of vitamin E and the mineral selenium is considered to be a natural antioxidant compound which is most widely used in the poultry industry. Such compounds have been reported to have synergistic effects for the syntheses of antioxidant enzymes have been androgenic. Vitamin E is a fat soluble compound whose natural antioxidant characteristic is strong. Selenium is deemed to be an essential nutrient in the diet of laying hens. Laying hen need selenium for their daily feed intake of about 0.05 to 0.08 ppm (NRC, 1994). It can be argued that the supplementation of diet with antioxidants can stimulate avian immune system (Sahin et al. 2010). As a case in point, Sahin and kucuk (2001) found that adding vitamin E and selenium in the diet of Japanese quail under heat stress conditions enhanced feed intake, body weight gain and feed conversion ratio (FCR). They contended that increased levels of these supplements led to better results. Nevertheless, Puthpongsiriporn et al. (2001) argued that supplementing the diet of laying hens with vitamin E might have some undesirable impacts. High ambient temperature reduces egg quality. However, vitamin E has a significant impact on Haugh unit (HU) through the antioxidant property and it can protect egg protein and lipid against oxidation. Kucuk et al. (2003) found that adding vitamin E (250 mg/kg) to The purpose of the present study was to evaluate the impact of vitamin E and selenium (Se) supplementation on the performance, egg quality and hatchability of eggs from Japanese breeding quails. The experiment was conducted over a 60 day period using 135 quails in a completely randomized design (CRD) with two levels of vitamin E and two levels of selenium (80 mg/kg of vitamin E+0.2 mg/kg organic selenium and 160 mg/kg vitamin E+0.4 mg/kg organic selenium). For each treatment, 3 replicates were considered. Each replicate included 15 quails (12 females and 3 males). Experimental results indicated that feed intake, shell thickness, the weight of egg whites and the perce tage of egg hatchability stored for 7 days were significantly affected by the treatments (P<0.05). n However, it was found that the treatments of the study did not have significant impacts on other features, i.e. egg production percentage, feed conversion ratio, egg shell percentage, yolk weight percentage, international quality unit (IQU), Haugh unit, percentage egg hatchability in 10 days storage. The results of the experiments revealed that the use of vitamin E and selenium (160 mg/kg of vitamin E+0.4 mg/kg organic selenium) had the highest impact on performance traits, percentage hatchability and egg quality traits.
A study on clinical profile of typhoid fever in children

Background: Typhoid fever is caused by Salmonella typhi . It is a major public health problem in India. Typhoid fever is endemic in many developing countries. Wide variations in the clinical manifestations of typhoid fever make its diagnosis a challenging task . This study was conducted to understand the wide range of clinical manifestations, complications and antibiotic sensitivity patterns of typhoid fever in children. Methods: Prospectively, 113 children admitted in pediatric unit with confirmed Typhoid fever from September 2015 to December 2016 at KIMS hospital, Bangalore were included. In each case, age, sex, presenting complaint, laboratory investigations and antibiotic sensitivity pattern are collected and analysed. Results: Out of 113 cases, 72 cases (63.8.1%) were males, 41 cases (36.2%) were females. The most common age group was 5-10 years. The most common symptom was fever, seen in 100% cases, followed by anorexia (61%), vomiting (44%) and abdominal pain (18%). The most common sign observed was toxic look in 68% of the cases, followed by coated tongue in 49% and hepatomegaly in 44%. Leucocytopenia was found in 34% of cases. Eosinopenia was found in 39% of cases. Anaemia was found in 16% of cases. Thrombocytopenia was found in 15% of cases. Blood culture was positive in 20% of cases. Use of municipal water for drinking was found in 65% of cases. Outside eating was found in 40% of cases. Unhygienic practices were found in 64% of cases. Duration of hospital stay varied from 3-10 days. No mortality reported . Conclusions: Typhoid fever is most commonly observed with unhygienic practices and eating of unhealthy outside food. This major public health issue can be tackled by bringing awareness among people regarding disease transmission and its various preventive measures.
Working Paper Series Working Paper 06-01 Reassessing Co-movements among G 7 Equity Markets : Evidence from iShares

iShares funds are products designed to mimic the movements of MSCI stock market indices. Being devoid of problems associated with trading restrictions, exchange-rate fluctuations and non-synchronous trading, iShares data are better suited for measuring, firstly, equity-market comovements and, secondly, diversification potential than national indices data; the latter data are used by most of the studies in the area. Applying recent time-varying methodology for the analysis of shortand long-term co-movements, a detailed analysis of the dynamics of the equity market linkages over the period 1996-2005 is provided. Evidence is found of increasing conditional correlations and significant time-varying long-run relationships between the US and the majority of other G7 markets since 2001, as measured by iShares. However, the extent of both short-term and long-term linkages between the G7 equity markets is lower for national indices data. Our findings suggest that (i) the results of earlier studies that are based on stock market indices should be interpreted with caution, since using these may overestimate the extent of available diversification benefits; and (ii) iShares funds do not represent perfect diversification products. These results appear to be robust to alternative model specifications, data frequency and conditioning bias.
Nanoscale mechanisms of CNT growth and etching in plasma environment

Plasma-enhanced chemical deposition (PECVD) of carbon nanotubes has already been shown to allow chirality control to some extent. In PECVD, however, etching may occur simultaneously with the growth, and the occurrence of intermediate processes further significantly complicates the growth process. We here employ a computational approach with experimental support to study the plasma-based formation of Ni nanoclusters, Ni-catalyzed CNT growth and subsequent etching processes, in order to understand the underpinning nanoscale mechanisms. We find that hydrogen is the dominant factor in both the re-structuring of a Ni film and the subsequent appearance of Ni nanoclusters, as well as in the CNT nucleation and etching processes. The obtained results are compared with available theoretical and experimental studies and provide a deeper understanding of the occurring nanoscale mechanisms in plasma-assisted CNT nucleation and growth.
Regional Environmental Quality and Cost Efficiency of International Tourist Hotels in Taiwan

The purpose of this study is to compute the cost efficiency of international tourist hotels ( ITHs) in Taiwan and analyze how regional environmental quality affects cost efficiency. The study collects a variety of operating data of international tourist hotels in Taiwan between 1998 and 2009 from the Annual Tourist Hotels Operational Analysis Report, as published by the Tourism Bureau. The data of regional environmental quality are collected from the Taiwan Environment Data Warehouse. This study first uses data envelopment analysis ( DEA) for computing cost efficiency, and then applies the truncated regression to investigate the impact of environmental indicators on cost efficiency. Namely, it is a two-stage DEA-regression method. The empirical results indicate that the density of pungent air pollutants, such as O3 and SO2, have significantly negative impacts on the cost efficiency of ITHs in Taiwan. However, the high volume of waste disposal and low recycling rate reflect a higher business activity intensity in a region, which positively enhances ITHs’ cost efficiency.