Miracle-dz/UniFAR-FTUs huggingface dataset:
Designing a Model of Organizational Agility: A Case Study of Ardabil Gas Company

Organizational agility means the ability of every organization in sensation, perception, and prediction of available changes in the business environment. The importance of organizational agility in a competitive environment is nowadays widely recognized and accepted. The aim of this research was to design a unified theoretical model of organizational agility for Ardabil Gas Company based upon the theoretical principles of organizational agility proposed by Goldman (1995). Independent variables including organizational intelligence, organizational commitment, and organizational trust were considered as mediator variable and other four essential components of organizational agility such as forming of virtual participation valorize to humanistic knowledge and skills, change readiness, and customers answering were known as dependent variables of research. This is an applied, descriptive-correlation research, conducted by survey methodology. In this study, 568 employees, contractors, and subscribers of Ardabil Gas Company were chosen as the statistical population of the study. For the purpose of the study a questionnaire for data collection was used. Using Structural Equation Modeling (SEM), it is straightforward to test hypotheses of the equality of various correlation coefficients with any number of covariates across multiple groups. The gathered data was analyzed by using SPSS and LISREL software packages. The results of statistical analysis indicate that organizational trust has a significant positive relationship with organizational agility and organizational trust is the moderator of the relationship between technology intelligence and organizational agility and the relationship between organizational commitment and organizational agility.
Design of Compact Monopole UWB Antenna with Dual Notched-Band Characteristics using Pair of Elliptical Split-Ring Slots

In this paper, a novel design of compact microstripline-fed ultra-wideband (UWB) antenna with dual notched-band characteristics is presented. By etching a pair of elliptical splitring slots on the radiating patch the dual notched-band characteristics are realized. The separate band-rejected characteristics are achieved at 3.5 and 5.75 GHz which covers a WiMAX (3.3-3.7 GHz) and WLAN (5.725-5.825 GHz) operating ranges respectively by adjusting the length of the elliptical split-ring slots. The proposed UWB antenna has the size of 26 × 32 mm which is printed on a low cost FR4 dielectric substrate having a relative permittivity (εr) of 4.4 and a loss tangent (tan δ) of 0.02 with a substrate thickness of 1.6 mm. The total length of the elliptical split-ring slots which affects the performance of the dual band notched characteristics and corresponding VSWR plots are investigated in this paper. The simulated result of the proposed antenna is presented and shows a good agreement with measured one. Moreover, the proposed antenna exhibits omnidirectional radiation characteristics with stable gain across the UWB range expect at 3.5 and 5.75 GHz which meets a real requirement for UWB applications.
Concepções dos Professores de Matemática e Processos de Formação

O interesse pelo estudo das concepcoes dos professores, tal como alias pelo estudo das concepcoes de outros profissionais e de outros grupos humanos, baseia-se no pressuposto de que existe um substracto conceptual que joga um papel determinante no pensamento e na accao. Este substracto e de uma natureza diferente dos conceitos especificos – nao diz respeito a objectos ou accoes bem determinadas, mas antes constitui uma forma de os organizar, de ver o mundo, de pensar. Nao se reduz aos aspectos mais imediatamente observaveis do comportamento e nao se revela com facilidade – nem aos outros nem a nos mesmos. As concepcoes tem uma natureza essencialmente cognitiva. Actuam como uma especie de filtro. Por um lado, sao indispensaveis pois estruturam o sentido que damos as coisas. Por outro lado, actuam como elemento bloqueador em relacao a novas realidades ou a certos problemas, limitando as nossas possibilidades de actuacao e compreensao. As concepcoes formam-se num processo simultaneamente individual (como resultado da elaboracao sobre a nossa experiencia) e social (como resultado do confronto das nossas elaboracoes com as dos outros). Assim, as nossas concepcoes sobre a Matematica sao influenciadas pelas experiencias que nos habituamos a reconhecer como tal e tambem pelas representacoes sociais dominantes. A Matematica e um assunto acerca do qual e dificil nao ter concepcoes. E uma ciencia muito antiga, que faz parte do conjunto das materias escolares desde ha seculos, e ensinada com caracter obrigatorio durante largos anos de escolaridade e tem sido chamada a um importante papel de seleccao social. Possui, por tudo isso, uma imagem forte, suscitando medos e admiracoes. A Matematica e geralmente tida como uma disciplina extremamente dificil, que lida com objectos e teorias fortemente abstractas, mais ou menos incompreensiveis. Para alguns salienta-se o seu aspecto mecânico, inevitavelmente associado ao calculo. E uma ciencia usualmente vista como atraindo pessoas com o seu que de especial. Em todos estes aspectos podera existir uma parte de verdade, mas o facto e que em conjunto eles representam uma
Data-Driven Partitioning of Power Networks Via Koopman Mode Analysis

This paper applies a new technique for modal decomposition based solely on measurements to test systems and demonstrates the technique's capability for partitioning a power network, which determines the points of separation in an islanding strategy. The mathematical technique is called the Koopman mode analysis (KMA) and stems from a spectral analysis of the so-called Koopman operator. Here, KMA is numerically approximated by applying an Arnoldi-like algorithm recently first applied to power system dynamics. In this paper we propose a practical data-driven algorithm incorporating KMA for network partitioning. Comparisons are made with two techniques previously applied for the network partitioning: spectral graph theory which is based on the eigenstructure of the graph Laplacian, and slow-coherency which identifies coherent groups of generators for a specified number of low-frequency modes. The partitioning results share common features with results obtained with graph theory and slow-coherency-based techniques. The suggested partitioning method is evaluated with two test systems, and similarities between Koopman modes and Laplacian eigenvectors are showed numerically and elaborated theoretically.
Differential regulation of choline acetyltransferase expression in adult Drosophila melanogaster brain.

Choline acetyltransferase (ChAT,E.C.2.3.1.6) catalyzes the synthesis of acetylcholine, and is considered to be a phenotypic marker specific for cholinergic neurons. In situ hybridization using a nonradioactive cRNA probe identified a large number of cell bodies expressing ChAT mRNA in the cortices of wild-type Drosophila melanogaster brain. Strong labeling is remarkable in the cortical regions associated with the lamina and antennal lobe, and also in the median neurosecretory (MNS) cells within pars intercerebralis, suggesting that some of the lamina monopolar neurons, antennal interneurons, and MNS cells are cholinergic. In two temperature-sensitive mutant alleles, Chats1 and Chats2, most hybridization signal disappears after exposure to a restrictive temperature (30 degrees C). Loss of signal is especially evident in the optic lobes. Some centrally located neurons, however, continue to express ChAT mRNA and are thus likely to have expression controlled in a different way than the majority of cholinergic neurons. Immunocytochemistry, using a ChAT specific monoclonal antibody, identified two sets of paired neurons located in the posterior cortex of the brain. These neurons persist in ChAT immunoreactivity even in the Chats mutants exposed to restrictive temperature. ChAT mRNA is also detectable in the corresponding cell bodies when Chats mutants are held at restrictive temperature. Our findings demonstrate some specific cholinergic neurons in Drosophila brain, and indicate that ChAT expression is differentially regulated in particular sets of cholinergic neurons.
The servitization of manufacturing: A review of literature and reflection on future challenges

– The purpose of this paper is to report the state‐of‐the‐art of servitization by presenting a clinical review of literature currently available on the topic. The paper aims to define the servitization concept, report on its origin, features and drivers and give examples of its adoption along with future research challenges. , – In determining the scope of this study, the focus is on articles that are central and relevant to servitization within a wider manufacturing context. The methodology consists of identifying relevant publication databases, searching these using a wide range of key words and phrases associated with servitization, and then fully reviewing each article in turn. The key findings and their implications for research are all described. , – Servitization is the innovation of an organisation's capabilities and processes to shift from selling products to selling integrated products and services that deliver value in use. There are a diverse range of servitization examples in the literature. These tend to emphasize the potential to maintain revenue streams and improve profitability. , – Servitization does not represent a panacea for manufactures. However, it is a concept of significant potential value, providing routes for companies to move up the value chain and exploit higher value business activities. There is little work to date that can be used to help practitioners. , – This paper provides a useful review of servitization and a platform on which to base more in‐depth research into the broader topic of service‐led competitive strategy by drawing on the work from other related research communities.
Blood biomarkers and functional disability among extremely longevous individuals: a population-based study.

BACKGROUND Several blood biomarkers have been linked to functional disability, a health problem in general populations. However, there are limited data for evaluating the potential association of biomarkers with functional disability in an extremely longevous (95+) population. METHODS We used data from 420 extremely longevous individuals from the Rugao longevity cohort, a population-based association study conducted in Rugao, a longevity town in China. Functional disability was assessed by the Katz Index of Independence in activities of daily living. Blood biomarkers, including serum lipid, lipoprotein cholesterol, serum albumin, and lymphocyte count, were correlated with activities of daily living. RESULTS Among extremely longevous women, following the degree of functional disability, serum albumin and lymphocyte count decreased significantly (all p for trend < .001). In a univariate model, serum albumin (β = -0.279, p < .001), lymphocyte count (β = -0.187, p < .001), and neutrophil count (β = 0.140, p = .012) were found to be significantly associated with activities of daily living in women. After adjustment for other covariates, the significance remained. Notably, multivariate regression analysis revealed independent effects of all the three biomarkers on activities of daily living (β = -0.242, -0.185, and 0.143, all p < .05). We did not observe any association in men. CONCLUSIONS We found significant associations between serum albumin, lymphocyte count, and neutrophil count and physical disability even after adjustment for potential confounders in extremely longevous women, which call for further study. The findings provide preliminary but crucial clues for future studies specifically aimed at exploring the longitudinal relationships of interest before proceeding with interventions.
Place‐related neural responses in the monkey hippocampal formation in a virtual space

Place cells in the rodent hippocampal formation (HF) are suggested to be the neural substrate for a spatial cognitive map. This specific spatial property of the place cells are regulated by both allothetic cues (i.e., intramaze local and distal cues) as well as idiothetic sensory inputs; the context signaled by the distal cues allows local and idiothetic cues to be employed for spatial tuning within the maze. To investigate the effects of distal cues on place‐related activity of primate HF neurons, 228 neurons were recorded from the monkey HF during virtual navigation in a similar situation to a rodent water maze, in which distal cues were important to locate the animal's position. A subset of 72 neurons displayed place‐related activity in one or more virtual spaces. Most place‐related responses disappeared or changed their spatial tuning (i.e., remapping) when the arrangements of the distal cues were altered/moved in the virtual spaces. These specific features of the monkey HF might underlie neurophysiological bases of human episodic memory. © 2005 Wiley‐Liss, Inc.
Kidneys of Alb/TGF-β1 Transgenic Mice Are Deficient in Retinoic Acid and Exogenous Retinoic Acid Shows Dose-Dependent Toxicity

Background: Alb/TGF-β1 transgenic mice overexpress active transforming growth factor-β1 (TGF-β1) in the liver, leading to increased circulating levels of the cytokine and progressive renal fibrosis. This study was designed to explore if exogenous all-trans retinoic acid (tRA) prevents renal fibrosis in this animal model. Methods: The retinoid profile in kidney and liver of wild-type and Alb/TGF-β1 transgenic mice was examined by high-performance liquid chromatography and slow-release pellets containing different amounts of tRA were implanted subcutaneously to treat the Alb/TGF-β1 transgenic mice, starting at 1 week of age; mice were sacrificed 2 weeks later. Results: Kidneys of 3-week-old wild-type mice had abundant tRA, which was completely absent in kidneys of the transgenic mice. Low doses of tRA (6–10.7 mg/kg/day) failed to affect renal fibrosis although it tended to suppress the mRNA expression of some molecular markers of fibrosis and retinal dehydrogenase 2 (RALDH2), a gene encoding a key tRA-synthesising enzyme. These tendencies disappeared, mortality tended to increase and RALDH2 and connective tissue growth factor (CTGF) mRNAs significantly increased in the medium-dose group (12.7–18.8 mg/kg/day). High doses (20.1–27.4 mg/kg/day) showed even higher toxicity with increased renal fibrosis and significant mortality. Conclusions: Alb/TGF-β1 transgenic mice are characterised by depletion of endogenous renal tRA. Exogenous tRA dose-dependently increases mortality and kidney fibrosis, which is associated with dose-dependent regulation of renal RALDH2 and CTGF mRNA expression.
Prehospital thrombolysis: a reappraisal.

Last three decades have witnessed revolutionary changes in the management of patients with ST-elevation acute myocardial infarction (AMI). Despite the advances in pharmacological and interventional treatment, the magnitude of morbidity and mortality from AMI remains quite substantial. It is widely acknowledged that the key factor in the successful treatment of AMI by thrombolytic therapy is the time elapsed between the onset of symptoms and initiation of therapy. A meta-analysis of 22 trials, including more than 50000 patients, showed maximal effectiveness of thrombolytic therapy within the first hour of symptom onset (the golden hour), whereas the benefit was reduced by nearly 50% in the subsequent hour (the Boersma’s curve). An estimated 65, 37, 26 and 29 lives are saved per 1000 patients when treated with thrombolytic therapy within 0-1, 1-2, 2-3 and 3-6 hours respectively. If the patients of AMI can be identified and treated very early after the onset of symptoms, the infarction process can essentially be aborted. Although these data have been recognized for nearly a decade, time-to-thrombolysis in major recent clinical trials still remains stalled at approximately 2.5 to 3 hours after the onset of symptoms. Reasons for delay in the treatment of AMI by thrombolytic therapy include: patient delay, ambulance response time, transportation to hospital, and door to needle time. Public awareness, comprehensive community planning and rapid diagnosis of AMI in the emergency department may partly reduce the delay. However, the time delay factor that is most vulnerable is the transportation time to the hospital. This time can be unacceptably long in rural or congested urban areas. A recent study from a tertiary care hospital of northern India showed that prehospital delay was the most important factor in delayed administration of thrombolytic therapy. Only a third of the patients could reach the hospital within two hours of onset of symptoms. Additional delay of one hour in administering the thrombolytics resulted in only a few patients actually receiving thrombolysis within the first two hours. The obvious step in the continuing effort to shorten timeto-treatment and thus to achieve maximal myocardial salvage is the use of prehospital thrombolysis. Although, this paradigm shift in the treatment of AMI to the prehospital setting rather than in the emergency department of a hospital sounds interesting, yet it raises several clinical, medico-legal and logistical issues.
Do Household Scanner Data Provide Representative Inferences from Brand Choices: A Comparison with Store Data

The authors investigate whether household scanner data provide representative inferences about brand choice behavior. They show the (analytical) equivalence of the homogeneous brand choice logit and the multinomial store sales models. Then, they determine how results for the homogeneous logit model estimated with actual household data deviate from results for the multinomial model estimated with actual store data from the same community. They also perform this comparison using model specifications that provide average estimated parameters while accommodating unobserved household heterogeneity. The authors find statistical support for the hypothesis that panelist households are not representative, whether household heterogeneity is or is not accommodated. Substantively, however, the average estimated price elasticities are close for the household and store data analyzed, if the household data are selected on the basis of purchase selection. An alternative selection procedure, called household selection, which is used for the analysis of complete household purchase records, provides results that strongly differ from the purchase selection results.
Highly qualified in the Czech Republic

The paper aims to analyse the current situation of the highly qualified in the Czech Republic applying the ISCO qualification. Previous studies suggest that educational attainment has an important impact on labour market performance and national competitiveness. Data analyses approved that highly qualified workforce positively influences economic situation of the EU–15 Member States they work in. However, this hypothesis was disapproved for the EU–10+3 Member States joining the EU after 2004. The difference can be explained by the various stage in convergence process since some New Member States are still in transformation period. We positively appraise the significant growth of fraction of the highly qualified in the Czech Republic since 2004, especially in the major group Professionals involving the most qualified workforce. The same trend happened also for the highly qualified foreigners in the Czech Republic, however their attracting still remains a challenge.
DETERMINATION OF PIT-1 / HINF 1 POLYMORPHISM IN HOLSTEIN AND NATIVE EAR CATTLE RAISED AS GENETIC RESOURCE IN TURKEY

Pit-1 gene has been identified as the pituitary specific transcription factor that regulates the expression of the growth hormone (GH) and prolactin (PRL) genes in the anterior pituitary. The use of polymorphic markers in breeding programmes could make selection more accurate and efficient. A total of 252, 181 Holstein cows and 71 native East Anatolian Red (EAR) cattle, were genotyped for polymorphism of Pit-1/Hinf1 gene by the polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) methods. In the Pit-1 gene, the frequency of AA, AB, and BB genotypes was 14, 54, and 32% for EAR, and 4, 31, and 65% for Holstein, respectively. The frequency of A allele was 41% for EAR, and 20% for Holstein. Both populations were in Hardy-Weinberg equilibrium.
USE OF COVER CROPS FOR WEED SUPPRESSION IN HAZELNUT (CORYLUS AVELLANA L.) IN TURKEY.

Weed management is critical in hazelnut (Corylus avellana) production. Weeds reduce nutrient availability, interfere with tree growth, and reduce hand-harvesting efficiency. Field experiments were conducted to test effects of cover crops as alternative weed management strategies in hazelnut. The cover crop treatments consisted of Trifolium repens L. , Festuca rubra subsp. rubra L. , Festuca arundinacea Schreb. , Vicia villosa Roth. And Trifolium meneghinianum Celmand fallow with no cover crop. Control plots such as weedy control, herbicide control and mechanical control were added as reference plots. The lowest weed dry biomass was obtained from Vicia villosa plots, and there were no significant differences among all other cover crop treatments. The highest cover crop dry biomass was measured in the Trifolium meneghinianum plots. Regarding the effect of cover crops on hazelnut yields, the lowest yield was ob- tained from weedy control plots, while the highest yield was obtained from F. arundinacea plots. This research indicated that cover crops could be used as living mulch in integrated weed management programs to manage weeds in the hazelnut orchards.
Linkage and Association Between a CD4 Gene Polymorphism and IDDM in Danish IDDM Patients

CD4+ T-cells play a central role in IDDM pathogenesis (1). Hence, gene polymorphisms that modulate the CD4 T-cell response to antigen presentation may confer susceptibility to IDDM. The CD4 receptor augments the CD4 T-cell receptor-mediated response to antigen presentation by interacting with major histocompatibility complex (MHC) class II molecules on antigen-presenting cells and the T-cell receptor, and by enhancing the antigen response through the CD4-associated tyrosine-protein kinase p56 (2). The CD4 receptor gene maps to chromosome 12pl2 in humans and to chromosome 6 in mice (3,4) close to the diabetes-linked locus Idd6 in the nonobese diabetic (NOD) mouse (5). Furthermore, a chromosome 6 locus conferring susceptibility to diabetes was found in the nonobese, nondiabetic (NON) mouse (6). Maximal linkage was found <6 cM from the CD4 gene. Random marker genome studies in humans have not linked loci on chromosome 12p to IDDM (7,8). However, in a Belgian case-control study an association between IDDM and the CD4*A4/A4 genotype of a pentanucleotide repeat polymorphism, 1250 bp upstream to the first exon, was demonstrated, suggesting the existence of an IDDM susceptibility locus in the CD4 gene or in a closely linked gene (9). Thus, several lines of evidence qualify the CD4 gene as a candidate gene in IDDM. The aim of the present study was therefore to investigate if the CD4*A4 allele is associated with and/or linked to IDDM in the Danish population. The study material comprised two types of IDDM multiplex families of Danish Caucasian origin: 115 sibpair families with 237 affected (110 female subjects, 129 affected sibpairs) and 91 unaffected (46 female subjects) offspring, and 105 parentoffspring families with a total of 105 affected (55 female subjects) and 112 unaffected (55 female subjects) offspring. Mean