Miracle-dz/UniFAR-FTUs huggingface dataset:
A Coupled Damage-Permeability Constitutive Model for Brittle Rocks Subjected to Explosive Loading

A dynamic constitutive model considering coupled damage-permeability effect is developed for rocks under explosion. The main purpose of this model is to provide reference to in situ leaching mining (include uranium ore, gold ore, etc.) to improve the permeability of rocks using blasting. The damage is induced and described by the summation of all principal tensile strains. This method does not need to determine (distinguish) the stress state of the material and thus does not need to consider the damage induced by differential stresses. A corresponding relation between the damage status and rock permeability is established through a logarithm function. Based on the theoretical foundation, this model is embedded in a three-dimensional code of ABAQUS, and its applicability is verified through simulating the experiments under the condition of explosive load, the results from numerical simulation are consistent with the experimental results. Moreover, the obvious advantage of the numerical constitutive model is that it can clearly distinguish permeability variation that cannot be done in laboratory test.
LONG-TERM MEMORY IN STOCK MARKET RETURNS: INTERNATIONAL EVIDENCE

It has been argued that research on market efficiency should be evaluated in terms of whether it improves our ability to predict the time series of security returns. Much recent work has addressed the issue of the presence of long memory components in stock prices because of the controversial implications of such a finding for market efficiency and for martingale models of asset prices used in financial economics and technical trading rules used for forecasting. This paper examines the presence of long memory in the stock returns of seven countries, namely, Australia, Japan, Korea, Malaysia, New Zealand, Singapore and the USA. The classical and modified rescaled range tests, the semi-parametric test proposed by Geweke and Porter-Hudak (1983), the frequency-domain score test proposed by Robinson [1994] and its time-domain counterpart derived by Silvapulle (1996) are applied to these returns in order to detect the long memory property. The evidence suggests that the Korean and the New Zealand stock returns are long-term dependent.
Tourism destination governance : a complexity science approach

Purpose The growing interest in complexity science as a framework for understanding social and economic systems has had, in recent times, an influence on the study of tourism destinations. This paper describes this approach and discusses its theoretical and methodological implications in terms of governance. Approach Tourism destinations behave as complex adaptive systems consisting of numerous interdependent factors and activities whose relationships are highly nonlinear. Traditional research has adopted a reductionist approach: variables and relationships are embedded in simplified linear models that explain observed phenomena and allow implications for management or forecasting of future behaviours. The limitations of this approach have led several authors to push towards an adaptive management philosophy. Rather than ‘imposing’ lines of action to force the evolutionary path of a system, different possible approaches are treated as experiments that provide information about the system that is being managed and used to refine strategies and governance styles. Complex systems provide a theoretical framework in which this adaptive philosophy is naturally embedded. After a brief overview of the complexity framework, the paper discusses its validity and applicability to the study of tourism systems. The significance of this line of thought is examined, both in their theoretical and practical implications. Outcomes This paper discusses a new perspective useful for the study of tourism destination governance providing insights into its organisational structure and dynamic behaviour. Originality and value The paper proposes a philosophy and practical toolset to analyse and understand a tourism destination and the relationships between its stakeholders. It discusses the implications of this new approach with regard to the governance methods. Type of paper: Conceptual paper
Group elements conjugate to their powers and Bass’ conjecture

In this paper, we use some specific properties that are enjoyed by group elements with non-zero Hattori-Stallings rank function and define, by homological means, a large class of groups that satisfy Bass’ conjecture. We examine closure properties of that class and exhibit certain examples of groups which are contained therein.
Enhancing the Educational Effectiveness of Two-Year Colleges: New Perspectives and Evidence of the Role of Institutional Characteristics.

This study researched how the characteristics of higher learning institutions affect the persistence and learning of college students. The author examined the extent to which perceptions of students' academic, personal, and career development and their satisfaction with their educational experiences in the two-year college are related to measures reflecting their campus cultures, campus missions, and managerial behaviors of campus leaders. The study was based on information obtained from a survey of full-time faculty and administrators in a statewide system of 14 community colleges. The institutions enrolled a total of 111,602 students, with enrollments by campus ranging from 2,967 to 14,052. Completed surveys were received from 1,423 (52%) of the total 2,716 full-time faculty and administrative staff. The typical respondent was white (82%) and female (55%), with a mean of 11.21 years professional experience at the college. The survey instrument was made up of four sets of variables designed to measure organizational effectiveness, assess organizational cultures, measure managerial role types, and assess campus missions. The collective results across the four equations clearly supported the central importance of a high level of agreement regarding the missions of community colleges and consistency between the actions of campus leaders and those espoused missions. (Contains 37 references.) (NB) Reproductions supplied by EDRS are the best that can be made from the original document.
B serum proteome profiles revealed dysregulated proteins and mechanisms associated with insomnia patients: A preliminary study

Background Insomnia is a clinical problem of significant public health importance; however, the underlying pathogenesis of this disorder is not comprehensively understood. Methods To identify potential treatment targets and unfold one of the gaps that were involved in insomnia pathological mechanisms, we employed a tandem mass tag-based (TMT) quantitative proteomics technology to detect differentially expressed proteins (DEPs) in serum from patients with insomnia and controls. DEPs were further analyzed by bioinformatics platforms. In addition, parallel reaction monitoring (PRM) was used to verify the TMT results. Results Patients with insomnia had poorer sleep quality compared with healthy controls. A total of 106 DEPs were identified among patients with insomnia and controls. They were mainly enriched in immune and inflammation-related biological functions and signaling pathways. Using the protein–protein interaction network, we screened the 10 most connected proteins as key DEPs. We predicted that four key DEPs were subject to targeted regulation by natural compounds of herbs. Eight key DEPs were validated using PRM in an additional 15 patients with insomnia and 15 controls, and the results also supported the experimental findings. Conclusion We identified aberrantly expressed proteins in insomnia that may be involved in the immune-inflammatory response. The 10 key DEPs screened may be potential targets for insomnia, especially FN1, EGF, HP, and IGF1. The results of this study will broaden our understanding of the pathological mechanisms of insomnia and provide more possibilities for pharmacotherapy.
Is Leadership a Part of Me? An Identity Approach to Understanding the Motivation to Lead

Drawing on identity and social comparison theories, we propose and test a model of motivation to lead based on two types of self-to-role comparisons (i.e., self-comparisons with specific leaders and with more abstract representations of the leadership role). We propose that these comparisons imply different identity verification purposes and have different consequences on the motivation of individuals. The results obtained by using structural equation models and response surface techniques among a sample of 180 executives support our predictions. We hypothesize and find that a perceived similarity with a significant leader has a positive effect on the motivation to lead and that this relationship is mediated by self-efficacy perceptions. We also find that the affective, but not the social-normative component, is higher when there is self-role congruence with respect to leadership dimensions such as “power” and “affiliation”. We discuss theoretical and practical implications for leadership and the subjective fit at work.
The MUSE Hubble Ultra Deep Field Survey: I. Survey description, data reduction and source detection

We present the MUSE Hubble Ultra Deep Survey, a mosaic of nine MUSE fields covering 90\% of the entire HUDF region with a 10-hour deep exposure time, plus a deeper 31-hour exposure in a single 1.15 arcmin2 field. The improved observing strategy and advanced data reduction results in datacubes with sub-arcsecond spatial resolution (0.65 arcsec at 7000 A) and accurate astrometry (0.07 arcsec rms). We compare the broadband photometric properties of the datacubes to HST photometry, finding a good agreement in zeropoint up to mAB=28 but with an increasing scatter for faint objects. We have investigated the noise properties and developed an empirical way to account for the impact of the correlation introduced by the 3D drizzle interpolation. The achieved 3 sigma emission line detection limit for a point source is 1.5 and 3.1 10-19 erg.s-1.cm-2 for the single ultra-deep datacube and the mosaic, respectively. We extracted 6288 sources using an optimal extraction scheme that takes the published HST source locations as prior. In parallel, we performed a blind search of emission line galaxies using an original method based on advanced test statistics and filter matching. The blind search results in 1251 emission line galaxy candidates in the mosaic and 306 in the ultradeep datacube, including 72 sources without HST counterparts (mAB>31). In addition 88 sources missed in the HST catalog but with clear HST counterparts were identified. This data set is the deepest spectroscopic survey ever performed. In just over 100 hours of integration time, it provides nearly an order of magnitude more spectroscopic redshifts compared to the data that has been accumulated on the UDF over the past decade. The depth and high quality of these datacubes enables new and detailed studies of the physical properties of the galaxy population and their environments over a large redshift range.
Efficient Model Selection for Sparse Least-Square SVMs

The Forward Least-Squares Approximation (FLSA) SVM is a newly-emerged Least-Square SVM (LS-SVM) whose solution is extremely sparse. The algorithm uses the number of support vectors as the regularization parameter and ensures the linear independency of the support vectors which span the solution. This paper proposed a variant of the FLSA-SVM, namely, Reduced FLSA-SVM which is of reduced computational complexity and memory requirements. The strategy of “contexts inheritance” is introduced to improve the efficiency of tuning the regularization parameter for both the FLSA-SVM and the RFLSA-SVM algorithms. Experimental results on benchmark datasets showed that, compared to the SVM and a number of its variants, the RFLSA-SVM solutions contain a reduced number of support vectors, while maintaining competitive generalization abilities. With respect to the time cost for tuning of the regularize parameter, the RFLSA-SVM algorithm was empirically demonstrated fastest compared to FLSA-SVM, the LS-SVM, and the SVM algorithms.
First report on the colony-forming freshwater ciliate Ophrydium versatile in an African river

Ophrydium versatile (Muller 1786) Ehrenberg 1830 – a symbiotic ciliate that forms gelatinous colonies – is widely distributed in temperate lakes in Europe and America, but has not previously been recorded from rivers. In this paper we report the first record of O. versatile in an African river, based on an identity confirmed by molecular taxonomic identification. The limnological conditions within the Lephalala River during the sampling period were characterised as oligotrophic with low DOC concentrations, similar to the conditions observed in temperate northern hemisphere lakes where these organisms have been recorded previously. The majority of O. versatile colonies occurred in areas where thin orange-coloured films containing high concentrations of iron (> 60% Fe) covered the substrate and bedrock of the river; this may be related to the abundant picophytoplankton that were associated with these films and oligotrophic conditions. The planktonic diatom Gomphonema venusta Passy was dominant in the water column throughout the study period and acted as an environmental indicator of low electrical conductivity (EC) conditions in the habitat where O. versatile colonies were recorded.
A RIGOROUS ANALYSIS AND EXPERIMENTAL RESEARCHES OF WAVEGUIDE MAGIC TEE AT W BAND

Abstract—A waveguide magic tee at W band is analyzed exactly and developed. The analysis approach is a combination of the mode expansion method and finite element method, which is based on the weak form of Helmholtz equation. Mode expansion instead of PML (Perfectly Matched Layers) is used to truncate the computing space of finite element. A magic tee at W band (75∼110 GHz) with the structure, which is easy for manufacture, is developed. Calculated results are presented and compared to those in experiments. Agreement has been observed. A sensitivity analysis is carried out, which shows the influence of the tolerance of manufacture on the performance of the magic tee. And the power carrying capacity of the designed magic tee is also evaluated.
Determination of Extended-Spectrum Beta-Lactamases Genes and Antibiotic Resistance Patterns in Escherichia coli Isolates from Healthy Cats

Background : This study was set to detect extended-spectrum beta-lactamases (ESBLs) producing E. coli isolates and the genes underlying their resistance in relation to phylogenetic background from fecal samples of healthy owned cats. Methods : A total of 50 E. coli isolates were confirmed by standard bacteriological tests. The phylogenetic analyses of the isolates were carried out by combinations of three genetic markers chuA , yjaA and DNA fragment TspE4.C2 by a triplex PCR method. The ESBL ( bla CTXM, bla TEM, bla SHV, bla OXA ) encoding genes were detected. To identify ESBL producing phenotypes, all selected isolates were screened with a double disk synergy test including cefotaxime, cefotaxime with clavulanic acid, ceftazidime and ceftazidime with clavulanic acid. Results : Results showed that E. coli isolates fell into four phylogenetic groups (A, D, B1 and B2) with prevalence of 78%, 4%, 8%, 10% and five phylogenetic subgroups including A0 (74 %), A1 (4 %), B1 (8 %), B2–2 (6 %), B2–3 (4 %) and D1 (4 %), respectively. Among all E. coli isolates, 4% were positive for bla SHV , bla CTX-M-15 and bla OXA-1 genes which distributed in B2-2, B2-3, A0 subgroups, respectively. According to antibiotic susceptibility test, 20 isolates were resistant which belonged to D (D1 phylogenetic subgroup) and A (A0 phylogenetic subgroup) groups. Conclusion : The results showed that healthy cats could be considered as potential source for the dissemination of ESBL-encoding genes. Further investigations in companion animals and their owners are needed to clarify the importance of spreading of these zoonotic strains.
Coupled air‐sea interaction patterns and surface heat‐flux feedback in the Bay of Biscay

[1] The coupled variability of the Sea Surface Temperature (SST) and atmosphere-ocean surface heat fluxes over the Bay of Biscay (Eastern North Atlantic) has been analyzed. Daily surface heat fluxes from different meteorological reanalyses are combined with a high resolution reconstructed satellite SST data set by means of Lagged Maximum Covariance Analysis (MCA). Lagged MCA is applied at different spatial scales. Its results are interpreted within the framework of Hasselmann's stochastic climate model. The surface heat-flux feedback on SST is confirmed to be generally negative. No clear relation is found between the first MCA expansion series and the leading Sea Level Pressure (SLP) patterns. However, a clear relation is found between the second expansion series and the leading SLP Principal Component (PC) when the atmosphere leads the ocean. Spatial patterns of anomalies of the SST and of the SST tendency are found to be related by a 4 day lag. The same reconstructed satellite SST and reanalysis heat fluxes are combined to estimate the feedbacks related to the surface heat fluxes. The traditional procedure used to compute the surface heat-flux feedbacks from monthly data is adapted for daily data. High resolution maps of the heat-flux feedback are derived for the annual and seasonal cases for the Bay of Biscay. Feedbacks related to turbulent (latent and sensible heat) fluxes are shown to dominate over the radiative ones. Special attention is paid to small-scale features present in both Lagged Covariance patterns and surface heat-flux feedback estimates.
A COMPARATIVE STUDY OF REGENERATED BAMBOO, COTTON AND VISCOSE RAYON FABRICS. PART 1: SELECTED COMFORT PROPERTIES

Regenerated bamboo, also known as bamboo viscose, is a man-made cellulose fibre that has recently appeared on the market as an apparel and home-furnishing textile. The products are marketed as having exceptional properties such as superior comfort and hand, as well as antimicrobial properties. Apart from the claimed “cool feeling”, the comfort properties referred to in the promotion of bamboo viscose fabrics can generally be ascribed to most cellulose fibres or fabrics. The purpose of this study was to investigate whether the moisture management and thermo-physiological properties of regenerated bamboo fabrics differ significantly from those of cotton and viscose rayon fabrics. A knitted regenerated bamboo fabric was compared to cotton and viscose rayon fabrics of comparable construction by using the results of objective measurements. Test apparatus used included the WALTERTM sweating manikin to measure thermal resistance, water vapour permeability, water absorbency and the moisture permeability index, the ALAMBETA instrument to measure thermal resistance and absorption and the PERMETEST instrument to measure water vapour permeability. To compare the structure of the regenerated bamboo fibre with that of cotton and viscose rayon fibres, the longitudinal character and cross-section of fibres were studied using scanning electron microscopy (SEM). Results confirmed that regenerated bamboo fibre fabrics have excellent moisture and temperature management properties. Contrary to the expectations created, however, no empirical evidence was found in this study, when properties pertaining to comfort were compared, to confirm that regenerated bamboo fibre fabrics are superior to those made of cotton and viscose rayon.
An Improved Scheme for Interest Mining Based on a Reconfiguration of the Peer-to-Peer Overlay

Tan et al. proposed a scheme to improve the quality of a file search in unstructured Peer-to-Peer systems by focusing on the similarity of interest of the participating peers. Although it certainly improves the cost/performance ratio of a simple flooding-based scheme used in conventional systems, the Tan's method has a serious drawback such that a query cannot reach a target peer if a requesting peer is not connected with the target peer through a path consisting of peers to have similar interest to the given query. In order to overcome such drawback of the Tan's method, we propose a scheme to reconfigure the underlying network in such a way that a requesting peer has a neighbor interested in the given query, before transmitting a query to its neighbors. The performance of the proposed scheme is evaluated by simulation. The result of simulation indicates that it certainly overcomes the drawback of the Tan's method.
Building sustainable creativity: a conceptual framework

Climate change, limited energy resources and population growth raise questions about sustainability and decisions for future generations. There is a need to contribute to a more sustainable world. This can be achieved with the use of creativity in, for example, product lifecycle management. Built on the literature about creativity and sustainability, a conceptual framework of sustainable creativity is proposed on the integration of the fields. The proposed framework is an attempt to the creation of sustainable concepts and includes the domains of “decomposition” and “integration” where the problem-, idea-, and concept-space are built on. Feedback loops are analysed and discussed as an important part of any radical/incremental product/service development within lifecycle management activities. Keywords: sustainability, creativity, product lifecycle management (PLM)
Koci drill for drilling in ice, sand and rock: drill requirements, design, performance, difficulties

Abstract A new man-portable drill designed to perform in ice with entrained sand and rock has been built. Designated the ‘Koci drill’, it was first used on rock-covered glaciers in the McMurdo Dry Valleys, Antarctica, during the 2006/07 field season. This drill is designed to be disassembled into component parts no heavier than 30 kg (not including the generator). For stability, the drill platform weight can be augmented with available rock. The field performance of the drill was generally good and both ice and rock were successfully penetrated and acceptable-quality ice cores up to 1 m long were collected during the 2007/08 season. The maximum depth achieved was 10.25 m. Given a concentrated effort at one or two sites per season, a depth of 40 m is achievable. Problems encountered in the field will be addressed in the next-generation design.