Miracle-dz/UniFAR-FTUs huggingface dataset:
An Analysis of The Impact of Service Quality on Customer Satisfaction in Malaysian Research Universities

The purpose of this paper is to present a regression model for predicting international postgraduate students satisfaction based on service quality. Ironically, most studies on student satisfaction tend to concentrate on the undergraduate students and/or the education providers. The university management would benefit by knowing which factors have impact on international students’ satisfaction. A multiple regression analysis was used upon a database 522 international postgraduate students who were selected based on stratified sampling from five research universities. The analysis started with descriptive analysis followed by regression analysis. Five factors in the form of professionalism, reliability, hospitality, tangibles, and commitment were examined as predictors for the students’ satisfaction. After conducting regression analysis, only professionalism and reliability, were found to be valid as independent variables for predicting satisfaction. As the international postgraduate segment is more lucrative, this research is timely and presents significantly different results from those found in the current literature.
A Life Less Ordinary: the Ritualization of the Domestic Sphere in Later Prehistoric Europe

This article, which is based on the fourteenth McDonald Lecture, considers two tensions in contemporary archaeology. One is between interpretations of specific structures, monuments and deposits as the result of either ‘ritual’ or ‘practical’ activities in the past, and the other is between an archaeology that focuses on subsistence and adaptation and one that emphasizes cognition, meaning, and agency. It suggests that these tensions arise from an inadequate conception of ritual itself. Drawing on recent studies of ritualization, it suggests that it might be more helpful to consider how aspects of domestic life took on special qualities in later prehistoric Europe. The discussion is based mainly on Neolithic enclosures and other monuments, Bronze Age and Iron Age settlement sites and the Viereckschanzen of central Europe. It may have implications for field archaeology as well as social archaeology, and also for those who study the formation of the archaeological record.
Worst-case portfolio optimization with proportional transaction costs

We study optimal asset allocation in a crash-threatened financial market with proportional transaction costs. The market is assumed to be either in a normal state, in which the risky asset follows a geometric Brownian motion, or in a crash state, in which the price of the risky asset can suddenly drop by a certain relative amount. We only assume the maximum number and the maximum relative size of the crashes to be given and do not make any assumptions about their distributions. For every investment strategy, we identify the worst-case scenario in the sense that the expected utility of terminal wealth is minimized. The objective is then to determine the investment strategy which yields the highest expected utility in its worst-case scenario. We solve the problem for utility functions with constant relative risk aversion using a stochastic control approach. We characterize the value function as the unique viscosity solution of a second-order nonlinear partial differential equation. The optimal strategies are characterized by time-dependent free boundaries which we compute numerically. The numerical examples suggest that it is not optimal to invest any wealth in the risky asset close to the investment horizon, while a long position in the risky asset is optimal if the remaining investment period is sufficiently large.
Beware of Emigrants Bearing Gifts: Optimal Fiscal and Monetary Policy in the Presence of Remittances

Remittance flows are quickly surpassing private capital flows and official aid in magnitude and rate of growth, making them the single most important form of income flows into developing and emerging economies. This paper uses a stochastic dynamic general equilibrium model to investigate the influence of countercyclical remittances on the conduct of fiscal and monetary policy and trace their effects on real and nominal variables in a business cycle setting. We show that remittances raise disposable income and consumption and insure against income shocks, thereby raising household welfare. However, remittances increase the correlation between labor and output, thereby producing a more volatile business cycle and increasing output and labor market risk. Optimal monetary policy in the presence of remittances deviates from the Friedman rule, highlighting the need for independent government policy instruments.
A Panel Analysis of the FDI Impact on International Trade

This paper examines the relationship between Foreign Direct Investment (FDI) and international trade. Specifically, the relationship between the stocks of inward FDI and outward FDI, and Imports and Exports in the Portuguese economy. This paper also studies some technical problems associated with panel data, which have frequently been ignored in previous studies. The problems of serial and contemporaneous correlation have not been taken into account by a panel approach and, as we know, they can have an impact on estimates and statistical inferences. The results show that there exists a complementary relationship between trade and inward stock of FDI and also a country-specific effect on the corrected panel data of heteroscedasticity and correlation.
Preoperative Tranexamic Acid in conjunction with Crystalloid Co-load improves the outcome of Elective Cesarean Section under spinal anesthesia

Objective: To evaluate therapeutic yield of tranexamic acid (TXA) injection and fluid co-load on the outcome of cesarean section (CS) conducted under spinal anesthesiaStudy Design : Prospective randomized comparative study.Patients and Methods: The current included 174 primipara scheduled for elective CS under spinal anesthesia. Intravenous (IV) fluid co-load (15 ml/kg warm lactated ringer solution) started as fast drip during and continued after spinal anesthesia. Patients were randomly allocated into two equal groups: Group TXA received a loading IV dose of 500 mg TXA 20 minutes before surgery followed by continuous TXA infusion at rate of 1 mg/kg/min till end of surgery. Group C did not receive prophylactic TXA, but both groups received a booster dose of 2 gm TXA if required. Patients were monitored for the frequency and severity of hypotension and dose of ephedrine used. Amount of bleeding since skin incision till 2-hours postpartum (PP), the frequency of patients had stopped PP bleeding till 2-hr PP and the total dose of oxytocin drugs and booster doses of TXA were recorded.Results: Hypotension was recorded in 53 patients (30.5%); only 12 patients had blood pressure Conclusion: Preoperative administration of TXA significantly reduced perioperative bleeding with significant reduction of consumption of TXA booster doses and utrotonics without affecting safety. Fluid coloading allowed reduction of the frequency and extent of hypotension concomitant with spinal anesthesia
The Benefits of Adopting a Problem-Based Learning Approach on Students' Learning Developments in Secondary Geography Lessons.

Problem-based learning (PBL) provides an appealing framework for teaching and learning not only within the subject of geography but also across other disciplines. It promotes a healthy environment for active learning with its diverse sets of activities, helping students carry out investigative inquiry in the learning processes. This study examines the potential benefits of adopting a PBL approach in teaching and learning in secondary geography classrooms. It takes into account the inputs needed from both teacher and students in determining the success of the approach implementation. The study shows how, through careful planning and preparation, PBL activities can effectively enhance students’ engagements and improve their grasp of geographical content knowledge. However, the teacher’s shortcomings in performing the role of facilitator did highlight a limitation for the research, which hindered the success of the implementation. Future research should continue to actively examine experiences from teachers in PBL applications, discussing the circumstances to identify the conditions necessary for successful implementation of PBL within a variety of contexts.
Quality of field collected and laboratory reared Chilo partellus (Swinhoe) (Lepidoptera: Crambidae) for screening maize genotypes

The quality of laboratory reared stem borer species for screening of maize varieties is usually questioned by end user cereal breeders. A quality check study was performed in a screen house at KARI-Katumani to evaluate the quality of eight-year old laboratory reared stem borer, Chilo partellus (Swinhoe). The evaluation was aimed at finding out the performance of the laboratory borers subjected to six-month interval of gene infusion in comparison with wild F1 generation of the same species collected from the field. One hundred (100) maize seedlings were grown on plastic pots of 5 by 5 cm and of 12 cm-height. The maize seedlings were infested with five first instar larvae on eight plants replicated four times for each borer ecotype. The wild ecotypes were collected from two different localities for comparison with eight-year old laboratory reared borers. Foliar damage, tunnel length on the maize stems and the recovered number of C. partellus larvae from the maize plants were used as the parameters for quality measure of the borer ecotypes. The laboratory-reared stem borer species had been subjected to frequent six-month gene-infusion interval from the wild. The results indicated feedvoracity drop of 3.8 and 21.5% for stem and foliar damage on the laboratory borer ecotype. The study established the need for continuous gene infusion to maintain high quality maize stem borer species as test organisms. Keywords: Chilo partellus , quality insects, insect rearing, maize genotypes. African Journal of Biotechnology Vol. 12(34), pp. 5370-5374
Çocuk koltuğu kullanımı: Üniversite çalışanlarının bilgi düzeyleri ile ilgili bir anket çalışması

Amac: Cocuk guvenlik koltuklari cocuk yolculari korumanin en iyi yontemidir. Son yillarda bati ulkelerinde motorlu arac kazalarinda cocuk olumlerinde onemli bir azalma olmustur. Ancak Turkiye'de cocuk guvenlik koltuklarinin kulla-nimi 2010 yilindan itibaren zorunlu olmustur. Bu calismada guvenlik koltuklarinin kullanim sikligini ve ebeveynlerin trafikte cocuk guvenlik koltuklari kullanimi ile ilgili goruslerini saptamayi amacladik. Gerec ve yontem: Bu calisma Turkiye'nin Kars ilinde gerceklestirildi. Universitede calisan ebeveynlere anket dagitildi. Anketin ilk kisminda katilimcinin kisisel ozellikleri sorgulanirken ikinci bolum ebeveynlerin cocuk guvenlik koltuklari ile ilgili bilgilerini degerlendirmek amaciyla olusturuldu. Bulgular: Dagitilan 600 anketten 516 (%86) geri toplatildi ve degerlendirmeye alindi. Bu calismada 266 katilimcinin cocugu ve otomobilinin oldugunu gosterdi. Onlarin yalnizca %13.5'inin cocuk guvenlik koltugu mevcuttu. Ebeveynler cocuk guvenlik koltuklari hakkindaki bilgi eksikliklerinin sahip olmamalarinin en onemli nedeni oldugunu belirttiler. Anne babalarin cogu gelecekte trafikte cocuk guvenli ile ilgili daha dikkatli olacaklarini belirttiler. Sonuc: Bu calisma ebeveynlerin cocugunun cocuk guvenlik koltuklarinin gerekliligi hakkinda bilgilerinin olmadigini gosterdi. Otoriteler cocuk guvenlik koltuklarini kullanim oranlarini arttirmak amaciyla yeni stratejiler gelistirmelidirler.
Genomic Selection in Plant Breeding: A Comparison of Models

Simulation and empirical studies of genomic selection (GS) show accuracies suffi cient to generate rapid genetic gains. However, with the increased popularity of GS approaches, numerous models have been proposed and no comparative analysis is available to identify the most promising ones. Using eight wheat (Triticum aestivum L.), barley (Hordeum vulgare L.), Arabidopsis thaliana (L.) Heynh. , and maize (Zea mays L.) datasets, the predictive ability of currently available GS models along with several machine learning methods was evaluated by comparing accuracies, the genomic estimated breeding values (GEBVs), and the marker effects for each model. While a similar level of accuracy was observed for many models, the level of overfi tting varied widely as did the computation time and the distribution of marker effect estimates. Our comparisons suggested that GS in plant breeding programs could be based on a reduced set of models such as the Bayesian Lasso, weighted Bayesian shrinkage regression (wBSR, a fast version of BayesB), and random forest (RF) (a machine learning method that could capture nonadditive effects). Linear combinations of different models were tested as well as bagging and boosting methods, but they did not improve accuracy. This study also showed large differences in accuracy between subpopulations within a dataset that could not always be explained by differences in phenotypic variance and size. The broad diversity of empirical datasets tested here adds evidence that GS could increase genetic gain per unit of time and cost.
What Powered the Optical Transient AT2017gfo Associated with GW170817?

The groundbreaking discovery of the optical transient AT2017gfo associated with GW170817 opens a unique opportunity to study the physics of double neutron star (NS) mergers. We argue that the standard interpretation of AT2017gfo as being powered by radioactive decay of r-process elements faces the challenge of simultaneously accounting for the peak luminosity and peak time of the event, as it is not easy to achieve the required high mass, and especially the low opacity of the ejecta required to fit the data. A plausible solution would be to invoke an additional energy source, which is probably provided by the merger product. We consider energy injection from two types of the merger products: (1) a post-merger black hole powered by fallback accretion; and (2) a long-lived NS remnant. The former case can only account for the early emission of AT2017gfo, with the late emission still powered by radioactive decay. In the latter case, both early- and late-emission components can be well interpreted as due to energy injection from a spinning-down NS, with the required mass and opacity of the ejecta components well consistent with known numerical simulation results. We suggest that there is a strong indication that the merger product of GW170817 is a long-lived (supramassive or even permanently stable), low magnetic field NS. The result provides a stringent constraint on the equations of state of NSs.
Limits on Clouds and Hazes for the TRAPPIST-1 Planets

The TRAPPIST-1 planetary system is an excellent candidate for study of the evolution and habitability of M-dwarf-hosted planets. Transmission spectroscopy observations performed on the system with the Hubble Space Telescope (HST) suggest that the innermost five planets do not possess clear hydrogen atmospheres. Here we reassess these conclusions with recently updated mass constraints. Additionally, we expand the analysis to include limits on metallicity, cloud top pressure, and the strength of haze scattering. We connect recent laboratory results of particle size and production rate for exoplanet hazes to a one-dimensional atmospheric model for TRAPPIST-1 transmission spectra. In this way, we obtain a physically based estimate of haze scattering cross sections. We find haze scattering cross sections on the order of 10−26–10−19 cm2 are needed in modeled hydrogen-rich atmospheres for TRAPPIST-1 d, e, and f to match the HST data. For TRAPPIST-1 g, we cannot rule out a clear hydrogen-rich atmosphere. We model the effects an opaque cloud deck and substantial heavy element content have on the transmission spectra using the updated mass estimates. We determine that hydrogen-rich atmospheres with high-altitude clouds, at pressures of 12 mbar and lower, are consistent with the HST observations for TRAPPIST-1 d and e. For TRAPPIST-1 f and g, we cannot rule out clear hydrogen-rich cases to high confidence. We demonstrate that metallicities of at least 60× solar with tropospheric (0.1 bar) clouds are in agreement with observations. Additionally, we provide estimates of the precision necessary for future observations to disentangle degeneracies in cloud top pressure and metallicity. For TRAPPIST-1 e and f, for example, 20 ppm precision is needed to distinguish between a clear atmosphere and one with a thick cloud layer at 0.1 bar across a wide range (1× to 1000× solar) of metallicity. Our results suggest secondary, volatile-rich atmospheres for the outer TRAPPIST-1 planets d, e, and f.
Homogenization theory for periodic potentials in the Schrödinger equation

We use homogenization theory to derive asymptotic solutions of the Schrödinger equation for periodic potentials. This approach provides a rigorous framework in which the key concepts in solid-state physics naturally arise (Bloch waves, band gaps, effective mass, and group velocity). We solve the resulting spectral cell problem using numerical spectral methods, and validate our solution in an analytically-solvable case. Finally, we briefly discuss the convergence of our asymptotic approach and we prove that the ground-state k = 0 effective mass is never less than the ordinary inertial mass.
Morphology of the shell of Happiella cf. insularis (Gastropoda: Heterobranchia: Systrophiidae) from three forest areas on Ilha Grande, Southeast Brazil

We conducted a study on shell morphology variation among three populations of Happiella cf. insularis (Boettger, 1889) inhabiting different areas (Jararaca, Caxadaco, and Parnaioca trails) at Vila Dois Rios, Ilha Grande, Angra dos Reis, state of Rio de Janeiro, Brazil. Linear and angular measurements, shell indices representing shell shape, and whorl counts were obtained from images drawn using a stereomicroscope coupled with a camera lucida. The statistical analysis based on ANOVA (followed by Bonferroni's test), Pearson's correlation matrix, and discriminant analysis enabled discrimination among the populations studied. The variable that most contributed to discriminate among groups was shell height. Mean shell height was greatest for specimens collected from Jararaca, probably reflecting the better conservation status of that area. Good conservation is associated with enhanced shell growth. Mean measurements were smallest for specimens from Parnaioca, the most disturbed area surveyed. Mean aperture height was smallest for specimens from Parnaioca, which may represent a strategy to prevent excessive water loss. Discriminant analysis revealed that the snails from Jararaca differ the most from snails collected in the two other areas, reflecting the different conservation status of these areas: shells reach larger sizes in the localities where the humidity is higher. The similarities in shell morphology were greater between areas that are more similar environmentally (Caxadaco and Parnaioca), suggesting that conchological differences may correspond to adaptations to the environment.
IRON ORE WASTE CLASSIFICATION ACCORDING TO UNEP GUIDELINES ( CASE STUDY : GOLGOHAR MINING AND INDUSTRIAL COMPLEX IN SIRJAN , IRAN )

Population growth has prompted governments to encourage industrial development in order to improve the welfare of their citizens. This process increases the deposition of human and industrial waste in the environment. The consequences of this have produced a serious need to implement appropriate management strategies in order to reduce and control the effect of the accumulation of such waste. The current study was undertaken to compile information about the status of iron ore waste produced by the Golgohar Mining and Industrial Complex in Sirjan, Iran, in 2015 by observation, field visits, interviews with officials and experts of the unit and the use of questionnaires and technical documentation. The industrial waste was classified using UNEP guidelines and guidelines for proper management of waste have been presented. The results of data analysis regarding the quantity and quality of mining and industrial waste of Golgohar Mining and Industrial Complex showed that about 24 million tons of solid industrial waste is produced annually. A large percentage comprises hazardous waste according to UNEP classifications and include rock and soil tailings from processing, dry and wet tailings. These are classified into group E as high volume and low-risk waste and in group A as mining waste containing heavy metals. The presence of heavy metals increases the importance of controlling and managing this waste.
THE ROLE OF NUTRITIVE SOLUTIONS DURING EMBRYOGENESIS IN IMPROVING HATCHABILITY AND POST-HATCH GROWTH PERFORMANCE

The purpose of this study was to testing the effects of spraying hatching eggs with some nutritive solutions i.e., vitamin C (Ascorbic acid, AA) and L-Carnitine (LCar) on hatchability, embryonic mortalities, chick quality, some blood traits and post-hatch growth performance. A total number of 3600 hatching eggs were obtained from Cobb broiler breeder chickens at 35 wks of age. Eggs were randomly divided into 6 groups (600 eggs / group) with four replicates containing 150 for each. The eggs were sprayed during embryogenesis at 1, 7, 14 and 18 d of incubation. Eggs sprayed with AA and L-Car in: 1) no spraying without any supplementation (control group), 2) distilled water (sham group), 3) distilled water + 4 g/L AA. , 4) distilled water + 6 g/L AA, 5) distilled water + 4 g/L L-Car, 6) distilled water + 6 g/L L-Car. At the end of hatching process, all un-hatched eggs were broken to estimate embryonic mortalities. Results revealed that spraying eggs with 6 g/L AA resulted in a significant (P≤0.05) improvement of hatchability traits. However, embryonic mortalities were almost significantly (P≤0.05) decreased due to application either AA or L-Car compared to control and sham groups. Furthermore, chick quality traits and subsequent growth performance markedly (P≤0.05) improved with application of nutritive solutions. Moreover, all blood traits were significantly (P≤0.05) affected due to positive effects of nutritive solutions, where the lowest corticosterone concentration observed for embryos resulted from eggs sprayed with either AA or L-Car, as judged by the decrease of stress. However, the highest RBC’s count recorded for chicks produced from eggs sprayed with 4 g/L AA, while, the highest value of hemoglobin concentration detected for chicks resulted from eggs sprayed with 6 g/L AA compared to other experimental groups. Furthermore, subsequent growth performance was severely improved due to spraying eggs with nutritive solutions. Most of carcass traits significantly (P≤0.05) affected due to spraying eggs with L-Car and AA, especially regarding with abdominal fat percentage, which significantly decreased. It could be concluded that, spraying hatching Cobb broiler breeder eggs with either AA or L-Car with doses 4 or 6 g/L on 1, 7, 14 and 18 d of embryogenesis markedly improved hatchability, chick quality traits and performance of progeny. Hence spraying eggs with these nutrients could be used as a successful method to reducing embryonic mortalities and improving early post-hatch performance.