Miracle-dz/UniFAR-FTUs huggingface dataset:
Intrauterine insemination: pregnancy rate and its associated factors in a university hospital in Iran

The objective was to determine pregnancy rate and its associated factors in Intrauterine Insemination (IUI) in a University ART center in Tehran Iran. Are retrospective descriptive study was conducted on all available records of infertile patients (200 cases) who had undergone IUI treatment for their infertility problems in Mirza Koochak Khan ART center between 1999 and 2000. The necessary data were collected and then analyzed with Chi-square test with a significant level of 0.05. 200 infertile couples did 575 IUI cycles. Pregnancy rate was 19.5% per couple and 6.8% per cycle (39 cases). The pregnancy rate in couples with secondary infertility was significantly higher than those with primary infertility (47.4% vs. 8.4% P 5 oocytes P=0.0095). As the numbers of IUI treatment cycles increased the success rate per cycles decreased. There was a significant difference in pregnancy rate according to kind of drug used for ovarian stimulation. Pregnancy rate was 11.5% with HMG compared to 7.2% with clomiphene citrate and HMG (P=0.052). Pregnancy rate with twice IUI per cycle was significantly higher than those who had one IUI per cycle (24.1% versus 11.8% P 60% NSM and with >5 large follicles at the time of treatment. Pregnancy rate does not increase with increasing the number of treatment cycles and ovarian stimulation with HMG is associated with relatively higher pregnancy rate. (authors)
Deep neural networks for energy and position reconstruction in EXO-200

We apply deep neural networks (DNN) to data from the EXO-200 experiment. In the studied cases, the DNN is able to reconstruct the relevant parameters—total energy and position—directly from raw digitized waveforms, with minimal exceptions. For the first time, the developed algorithms are evaluated on real detector calibration data. The accuracy of reconstruction either reaches or exceeds what was achieved by the conventional approaches developed by EXO-200 over the course of the experiment. Most existing DNN approaches to event reconstruction and classification in particle physics are trained on Monte Carlo simulated events. Such algorithms are inherently limited by the accuracy of the simulation. We describe a unique approach that, in an experiment such as EXO-200, allows to successfully perform certain reconstruction and analysis tasks by training the network on waveforms from experimental data, either reducing or eliminating the reliance on the Monte Carlo.
Radio journalists and the Internet: A study on perceptions

This study investigates how Portuguese radio journalists evaluate the changes that have occurred in the profession since the Internet has been integrated in newsrooms. The main purpose is to understand how these professional perceive the influence of the Internet on journalism practices, roles and ethics. In order to achieve this purpose, it was carried out a survey of 30 journalists working at the four main Portuguese radio stations newsrooms. Results confirm that Internet is considered a positive influence on journalism. The global network allows an enhancement of journalists’ communicative and practical performance, but is perceived has having a limited impact on traditional journalists’ roles in a democratic society .
Information Technology in Initial Teacher Education: preconceptions of history and geography interns, with reflections of mentors and tutors

ABSTRACT The results of a survey of experiences, feelings and preconceptions concerning information technology (IT) that University of Oxford history and geography interns bring to the one year secondary teacher training course are reported. A notable finding was the significantly greater importance attributed to the use of computers in subject teaching by geography interns compared with historians, and the relatively large numbers of the latter ascribing little or no importance to the use of computers in the teaching of history. Analysis of the qualitative data provided by this study provided a range of insights into the ways in which geography and history interns viewed information technology. There was a marked difference between the two groups not only in their feelings about IT but in the degree of sophistication with which they articulated IT issues. The geographers were more positive and were able to support their views with specific examples of software and applications. Their level of knowledge a.
Adaptive divergence in Darwin's small ground finch (Geospiza fuliginosa): divergent selection along a cline

We examine here, in a single year (2005), phenotypic divergence along a 560-m elevation gradient in Darwin’s small ground finch (Geospiza fuliginosa) in the Galapagos Islands. In this sample, four composite measures of phenotypic traits showed significant differences along the 18-km geographical cline extending from lowlands to highlands. Compared with lowland birds, highland birds had larger and more pointed beaks, and thicker tarsi, but smaller feet and claws. Finches in an intervening agricultural zone had predominantly intermediate trait values. In a second, mark–recapture study we analyse selection on morphological traits among birds recaptured across years (2000–2005) in lowland and highland habitats. Birds were more likely to survive in the highlands and during the wet season, as well as if they had large beaks and bodies. In addition, highland birds exhibited higher survival rates if they had small feet and pointed beaks – attributes common to highland birds as a whole. Lowland birds were more likely to survive if they possessed the opposite traits. Selection therefore reinforced existing morphological divergence, which appears to reflect local adaptation to differing resources during the predominantly drought-ridden conditions that characterized the 5-year study. Alternative explanations – including genetic drift, matching habitat choice, deformation by parasites, and the effects of wear – received little or no support. © 2013 The Linnean Society of London, Biological Journal of the Linnean Society, 2013, 110, 45–59.
*Advance Purchase Discounts Versus Clearance Sales

This article considers advance selling problems. It explains why some goods (e.g. airline tickets) are sold cheap to early buyers, while others (e.g. theatre tickets) offer discounts to those who buy late. We derive the profit maximising selling strategy for a monopolist when aggregate demand is certain but buyers face uncertainty about their individual demands. When aggregate demand exceeds capacity, both Advance Purchase Discounts as well as Clearance Sales might be optimal. We determine how the comparison of these price discrimination strategies depends on the rationing rule, capacity costs and the availability of temporal capacity limits, price commitment and resale.
Cascaded Position-Flux Controller for an AMB System Operating at Zero Bias

The paper reports on the implementation and the design of a controller for a fuel cell blower (FCB) with active magnetic bearings (AMBs). The cascaded position-fluxcentralized controller is comprised of a centralized position control loop and an inner flux control loop. The last one is based on state estimation without explicit flux measurements. As the position control is not dependent on the magnetic field nonlinearities, such a control structure enables operation under a zero bias. The practical working implementation of a flux control for the industrial levitated rotor is shown for the first time. The flux control gives better results than current control for both normal and zero bias operation. The system is analyzed fully, combining rotor dynamics and power amplifier analyses simultaneously. The importance of using the coil voltage in addition to current and practical treatment of the flux control is revealed. The centralized position-flux controller is compared with a state-of-the-art cascaded position-current control, which has inner current control loops. The proposed control solution with a zero bias can achieve a dynamic performance comparable that of a controller with the classical bias current.
The Effect of Disclosure on the Pay-Performance Relation

We examine whether greater transparency leads to improved evaluation and rewarding of management. We posit that disclosure improves board effectiveness at monitoring executives and in strengthening the link between pay and performance. We use management guidance as our empirical proxy for disclosure and document the following. We predict and find higher sensitivity of CEO compensation to performance (both accounting and stock returns) for firms that issue management guidance than for firms that do not. Our results are robust to multiple tests that address the potential endogeneity of management’s decision to issue guidance (using a Heckman self-selection model, employing a matched-sample approach, and identifying a subsample of firms in which increased disclosure is likely to be exogenous), tests that control for alternative explanations, and tests that use conference calls as an alternative disclosure metric.
A tentative study for the prediction of the CME related geomagnetic storm intensity and its transit time

Using 80 CME-ICME events during 1997.1–2002.9, based on the eruptive source locations of CMEs and solar magnetic field observation at the photosphere, a current sheet magnetic coordinate (CMC) system is established in order to study the propagation of CME and its geoeffectiveness. In context of this coordinate system, the effect of the eruptive source location and the form of heliospheric current sheet (HCS) at the eruptive time of CME on the geomagnetic storm intensity caused by CME and the CME’s transit time at the Earth is investigated in detail. Our preliminary conclusions are: 1) The geomagnetic disturbances caused by CMEs tend to have the so-called “same side-opposite side effect”, i.e. CMEs erupt from the same side of the HCS as the earth would be more likely to arrive at the earth and the geomagnetic disturbances associated with them tend to be of larger magnitude, while CMEs erupting from the opposite side would arrive at the earth with less probability and the corresponding geomagnetic disturbance magnitudes would be relatively weaker. 2) The angular separation between the earth and the HCS affect the corresponding disturbance intensity. That is, when our earth is located near the HCS, adverse space weather events occur most probably. 3) The erupting location of the CME and its nearby form of HCS will also affect its arrival time at the earth. According to these conclusions, in this context of CMC coordinate we arrive at new prediction method for estimating the geomagnetic storm intensity (Dstmin) caused by CMEs and their transit times. The application of the empirical model for 80 CME-ICME events shows that the relative error of Dst is within 30% for 59% events with Dstmin≤−50 nT, while the averaged absolute error of transit time is lower than 10 h for all events.
Polypodium interjectum and P. ×mantoniae (Polypodiaceae: Pteridophyta), new to the Bulgarian flora

There are three closely related species of Polypodium in Europe: P. cambricum , P. vulgare, and P. interjectum . Although the first two species have been reported in the Bulgarian botanical literature, only P. vulgare s.str. has been so far confirmed. At present there is no evidence on the occurrence of P. cambricum in Bulgaria. This paper reports two taxa of Polypodium as new to the Bulgarian flora. These are P. interjectum and the natural hybrid P. ×mantoniae (P. interjectum × P. vulgare). Plants from several sites were subjected to morphological, cytological and spore analyses. The mitotic chromosome counts revealed a pentaploid number 2n = 185 for the hybrid individuals, and a hexaploid 2n = 222 for P. interjectum. A morphological comparison between Bulgarian P. interjectum and P. vulgare was made. The frond morphology of the hybrid P. ×mantoniae was intermediate between the two parents, and the spores were abortive, greatly varying in shape and size. Spore characteristics of P. interjectum and P. vulgare are noted. Distribution maps of the studied taxa in Bulgaria are presented. Polypodium interjectum and P. ×mantoniae are known to exist in many European countries. These records of the two taxa in Bulgaria extend the knowledge on their distribution.
Water Absorption, Hard Shell and Cooking Time of Common Beans (Phaseolus vulgaris L.)

Legumes play an important role in human nutrition, especially among low-income human groups in developing countries. Beans are particularly important in Brazil for two reasons: Brazil is the largest producer and consumer of grain legumes in the world and the fact that beans are a major source of protein for many people. The objective of this study was to evaluate the hard-shell percentage in seven common beans (Phaseolus vulgaris L) cultivars, by using the Burr cooking method before and after soaking. The following cultivars developed by Embrapa Rice and Beans, in Santo Antonio de Goias ? GO, obtained from the same area and planting time (winter) were used: BRS Vereda (rosinha); BRS Timbo (roxinho); BRS Grafite (preto); BRS Radiante (rajado); BRS ? Pontal (carioca); BRS Marfim (mulatinho) and Jalo Precoce (jalo). The results revealed significant differences (p<0.05) among the cultivars in relation to hard-shell and cooking time (before and after soaking). The cultivar Jalo Precoce (jalo) presented the highest percentage of hard-shell (42%) and cooking time (67.5 minutes) without previous soaking. The cultivars BRS Timbo (roxinho); BRS Grafite (preto); BRS Pontal (carioca), and BRS Marfim (mulatinho) did not present hard-shell grains.
Assessing the Regulation of Temporary Foreign Workers in Canada

There has been an increase in the number of incoming temporary migrant workers to Canada over the past decade. In this article, I critically assess recent changes in the law governing temporary migration to Canada by using theoretical tools from the fields of sociology, geography, and legal geography. A multidisciplinary framework to understand Canada’s labour migration policies is provided. Within the socio-historical context of migrant labour regulation in Canada, I argue that political and regulatory developments function to further entrench segregation and exclusion of foreign workers by maintaining a subclass of flexible labour. Specifically, I show that Canada’s current temporary migration regime retains the country’s historical role as an ethnocratic settler state in which the regulation of migrant workers creates inherent boundaries. These boundaries demarcate racially identified space(s) on the basis of the economic and political logic underlying temporary migration.
Body image and food disorders : Evidence from a sample of European women by Joan Costa-Font *

Excessive preoccupation for self-image has been pointed out as an essential factor explaining food disorders. This paper draws upon Akerlof and Kranton (2000) to model how ’self-image’ and others’ appearances influence health related behaviours. We estimate the influence of ’peers’ image’ on the likelihood of anorexia and self-image using data from a cross sectional European representative survey for 2004. We follow a two-step empirical strategy. First, we estimate the probability that a woman is extremely thin and, at the same time, she sees herself as too fat. Our findings reveal that peers’ average Body Mass Index decreases the likelihood of being anorexic. Second, we take apart the two processes and estimate a recursive probit model of being very thin and perceiving one self as being too fat. Although peers’ Body Mass Index decreases the likelihood of being very thin but increases that of seeing one self as too fat, the unobservables explaining both processes are significantly correlated.
Integrability and Linearizability of the Lotka–Volterra System with a Saddle Point with Rational Hyperbolicity Ratio

Abstract In this paper, we consider normalizability, integrability and linearizability properties of the Lotka–Volterra system in the neighborhood of a singular point with eigenvalues 1 and −λ. The results are obtained by generalizing and expanding two methods already known: the power expansion of the first integral or of the linearizing transformation and the transformation of the saddle into a node. With these methods we find conditions that are valid for λ∈ R + or λ∈ Q . These conditions will allow us to find all the integrable and linearizable systems for λ= p 2 and 2 p with p∈ N +.
Public Finance in an Era of Global Demographic Change: Fertility Busts, Migration Booms, and Public Policy

The rich countries of the world, especially those of Western Europe, are aging rapidly due to fertility rates far below the replacement rate, while experiencing substantial immigration from elsewhere in Europe, North Africa, and the third world generally. For the foreseeable future, West European countries will confront a policy tradeoff between population aging and (im)migration. The literature shows that both skilled and unskilled workers affect the highly redistributive fiscal systems of the advanced economies, the first as net contributors, the second as net beneficiaries. Age-imbalanced population structures in rich countries and global competition for labor create incentives to limit the extent of redistribution in rich countries.
The Origins of Technology-Skill Complementarity

Current concern with relationships among particular technologies, capital, and the wage structure motivates this study of the origins of technology-skill complementarity in manufacturing. We offer evidence of the existence of technology-skill and capital-skill (relative) complementarities from 1909 to 1929, and suggest that they were associated with continuous-process and batch methods and the adoption of electric motors. Industries that used more capital per worker and a greater proportion of their horsepower in the form of purchased electricity employed relatively more educated blue-collar workers in 1940 and paid their blue-collar workers substantially more from 1909 to 1929. We also infer capital-skill complementarity using the wage-bill for non-production workers and find that the relationship was as large from 1909-19 as it has been recently. Finally, we link our findings to those on the high-school movement (1910 to 1940). The rapid increase in the supply of skills from 1910 to 1940 may have prevented rising inequality with technological change.
Motivation and Changing Fortunes in Teachers' Output: Empirical Evidence from Selected Secondary Schools in North West Region of Cameroon.

Workers’ feelings, behaviour, attached value (worth) and the environment determines the amount of effort put in for the attainment of organizational objectives. Satisfied teachers are generally productive and can influence students’ achievement. This study aimed at identifying and examining the effects of motivation on teacher output in Government Secondary and High Schools in the North West Region of Cameroon. The purposive sampling technique was employed to select 75 principals to whom a 20-item self-constructed questionnaire was administered. Descriptive statistics (percentages and frequencies) wereemployed to answer the four research questions while inferential statistic (one sample t-test, 2-tailed) was used to test the four hypotheses at a 0.05 level of significance. The findings revealed that boasting teachers’ morale, promotion of teachers, good work environment and cordial interpersonal relationships positively influenced teachers’ output. It was therefore recommended that principals should strengthened in-service training facilities for teachers; appointment into posts of responsibilities should consider qualification, experience and personal skills of the teacher concerned; and that trust, confidence, delegation of power and shared decision making should be encouraged amongst principals.
An empirical analysis of supply and manufacturing risk and business performance: a Chinese manufacturing supply chain perspective

Purpose This study aims to explore the importance and impact of supply and manufacturing risk management upon business performance within the context of Chinese manufacturing supply chains. Design/methodology/approach A two-phased multi-method approach was adopted, which included a survey questionnaire to practitioners in Chinese manufacturing supply chains followed by semi-structured interviews. The findings included 103 valid survey responses complemented by six semi-structured interviews. Findings The results indicate that in Chinese manufacturing context supply risk and manufacturing risk management are both vital for business performance. A high correlation between business and manufacturing risk management performance exists; however, no significant impact of supplier dependency, systematic purchasing, maturity of production and supply chain and human resources was found despite previously these elements being regarded as key influencers for supply and manufacturing risk management performance. The Chinese manufacturing supply chain indicated that elements such as the supplier and customer orientation, flexibility, manufacturing and supply risk highly connotes with business performance. Practical implications In the current unpredictable and volatile business environment, the competitiveness of manufacturing supply chains to a large extent depend on their ability to identify, assess and manage the manufacturing and supply risks. The findings of this study will assist supply chain managers in taking decision on manufacturing and supply risk management and reducing the uncertainty upon their business performance. Originality/value The supply chain risk has been widely explored within the context of individual case studies, or standalone models focusing on either supply or manufacturing risk in supply chains; however, to what extent this has been applicable to a wider context and its impact upon business process has not been explored. Hence, this study simultaneously has analysed manufacturing risk and supply risk and its impact upon Chinese manufacturing supply chains business performance. Moreover, this study uses a combination of quantitative and qualitative methods, which is often limited in this area. Finally, the institutional theory lens offers novel insights in better understanding the factors that can affect the impact of supply and manufacturing risk management upon business performance in those contexts, such as China, where the institutional aspect presents specific features.
Remittances and economic growth nexus: Do financial development and investment act as transmission channels? An ARDL bounds approach

The study seeks to investigate the causal links between economic growth and remittances through two specific transmission channels, namely financial development and investment. Using Bangladesh as a case study, the study employs autoregressive distributed lag (ARDL) approach to cointegration proposed by Pesaran et al. (2001). Based on a time series data over the period 1977–2013, the findings reveal no long term lead-lag relationship between economic growth and remittances. However, the short term relation exists between remittances and investment. Investment also stimulates economic growth. A unidirectional transmitting channel through investment can be identified in the short run. The financial development was found to be weak in the growth remittances nexus and this shows the presence of a missing link between investment and financial development. This might happen due to financial exclusion and inflow of remittances through informal unaccounted channel. Policy makers should focus on financial sector deepening to promote financial inclusion. Moreover, creating awareness to promote flow of remittances through formal channel should get priority. For the future researchers, the inclusion of microfinance sector as a transmission channel might provide significant findings as the remittances in fact represent the people at the bottom of the pyramid, where microfinance sector has a strong presence unlike the formal financial sector.