Miracle-dz/UniFAR-FTUs huggingface dataset:
On The Foundations of Combinatorial Theory: Combinatorial Geometries

It has been clear within the last ten years that combinatorial geometry, together with its order-theoretic counterpart, the geometric lattice, can serve to catalyze the whole field of combinatorial theory, and a major aim of this book, now available in a preliminary edition, is to present the theory in a form accessible to mathematicians working in disparate subjects.Earlier studies have been one-sided or restricted in their point of view; they were motivated primarily by the desire to extend the classical theory of graphs, or were lattice-theoretic approaches confined to axiomatics and algebraic dependence. These approaches largely ignored the original geometric motivations.The present work brings all these aspects together in order to emphasize the many-sidedness of combinatorial geometry, and to point up the unifying role it may well play in current developments in combinatorics and its applications.The book defines the axiomatics of combinatorial geometry, describes a variety of geometrical examples, and discusses the notion of a strong map between geometries. In addition, there is a brief presentation of coordinatization theory and a sketch of two important lines of future work, the "critical problem" and matching theory. The full chapter titles are given below. "Contents: " 1. Introduction. 2. Geometrics and Geometric Lattices. 3. Six Classical Examples. 4. Span, Bases, Bonds, Dependence, and Circuits. 5. Cryptomorphic Versions of Geometry. 6. Simplicial Geometries. 7. Semimodular Functions. 8. A Glimpse of Matching Theory. 9. Maps. 10. The Extension Theorem. 11. Orthogonality. 12. Factorization of Relatively Complemented Lattices. 13. Factorization of Geometries. 14. Connected Sets. 15. Representation. 16. The Critical Problem. 17. Bibliography.
Topics in Metric Fixed Point Theory

Introduction 1. Preliminaries 2. Banach's contraction principle 3. Nonexpansive mappings: introduction 4. The basic fixed point theorems for nonexpansive mappings 5. Scaling the convexity of the unit ball 6. The modulus of convexity and normal structure 7. Normal structure and smoothness 8. Conditions involving compactness 9. Sequential approximation techniques 10. Weak sequential approximations 11. Properties of fixed point sets and minimal sets 12. Special properties of Hilbert space 13. Applications to accretivity 14. Nonstandard methods 15. Set-valued mappings 16. Uniformly Lipschitzian mappings 17. Rotative mappings 18. The theorems of Brouwer and Schauder 19. Lipschitzian mappings 20. Minimal displacement 21. The retraction problem References.
An Introduction to Fractional Control

Fractional control techniques provide an effective way to control dynamic behaviours, using fractional differential equations. This can include the control of fractional plants, the control of a plant using a fractional controller, or the control of a plant so that the controlled system will have a fractional behaviour to achieve a performance that would otherwise be hard to come by. An Introduction to Fractional Control outlines the theory, techniques and applications of fractional control. After an initial introduction to fractional calculus, the book explores many fractional control systems including fractional lead control, fractional lag control, first, second and third generation Crone control, fractional PID, PI and PD control, fractional sliding mode control, logarithmic phase Crone control, fractional reset control, fractional H2 and H∞ control, fractional predictive control, and fractional time-varying control. Each chapter contains solved examples and references for further reading. Common definitions and proofs are included, along with a discussion of how MATLAB can be used to assist in the design and implementation of fractional control. This book is an essential guide for researchers and advanced students of control engineering in academia and industry.
The Effect of Flexible Work Arrangement and Perceived Organizational Support on Employee Job Performance: The Mediating Role of Employee Engagement

This study aims to determine the effect of flexible work arrangements (FWA) and perceived organizational support (POS) on employee job performance through employee engagement. A cross-sectional research design was used in this study where the sample of the research were permanent employees in Indonesian companies that implemented flexible work arrangements. There are 344 data collected in this research where 35 data was used as pre-test and 309 data for the main test. The data was then analyzed using the Structural Equation Modelling (SEM) method to determine the relationship between each variable construct. This study used four variables with a total of 49 items questions. The findings of this study indicated that FWA and POS have a positive and significant effect on employee engagement and employee job performance. The study also revealed that employee engagement had a positive and significant influence on employee performance. Therefore, employee engagement mediates the effect of FWA and POS on employee job performance. The results of this study are expected to be a consideration for companies to be able to implement work flexibility policies because they can improve employee job performance. Work flexibility policy can create a work-life balance for employees to help increase employee engagement, which in turn makes employee performance increase.
Evaluating cancer cell lines as models for metastatic breast cancer

Metastasis is the most common cause of cancer-related death and, as such, there is an urgent need to discover new therapies to treat metastasized cancers. Cancer cell lines are widely-used models to study cancer biology and evaluate drug candidates. However, it is still unknown whether they adequately recapitulate the disease in patients. The recent accumulation of large-scale genomic data in cell lines, mouse models, and patient tissue samples provides an unprecedented opportunity to evaluate the suitability of cancer cell lines as models for metastatic cancer research. Through comprehensively comparing the genomic profiles of 57 breast cancer cell lines with those of metastatic breast cancer samples, we found their substantial genomic differences. We also identified cell lines that more closely resemble different subtypes of metastatic breast cancer. However, we found none of the currently established Basal-like cell lines sufficiently resemble the samples of Basal-like metastatic breast cancer, a subtype of high interest in therapeutic discovery. Further analysis of mutation, copy number variation and gene expression data suggested that MDAMB231, the most commonly used triple negative cell line, had little genomic similarity with Basal-like metastatic breast cancer samples. Our work demonstrates an urgent need of cell lines that more closely resemble Basal-like metastatic breast cancer samples, and could guide cell line selection in other metastasis-related translational research.
Modular regulation of floral traits by a PRE1 homolog in Mimulus verbenaceus: implications for the role of pleiotropy in floral integration

Abstract Floral traits often show correlated variation within and among species. For species with fused petals, strong correlations among corolla tube, stamen, and pistil length are particularly prevalent, and these three traits are considered an intra-floral functional module. Pleiotropy has long been implicated in such modular integration of floral traits, but empirical evidence based on actual gene function is scarce. We tested the role of pleiotropy in the expression of intra-floral modularity in the monkeyflower species Mimulus verbenaceus by transgenic manipulation of a homolog of Arabidopsis PRE1. Downregulation of MvPRE1 by RNA interference resulted in simultaneous decreases in the lengths of corolla tube, petal lobe, stamen, and pistil, but little change in calyx and leaf lengths or organ width. Overexpression of MvPRE1 caused increased corolla tube and stamen lengths, with little effect on other floral traits. Our results suggest that genes like MvPRE1 can indeed regulate multiple floral traits in a functional module but meanwhile have little effect on other modules, and that pleiotropic effects of these genes may have played an important role in the evolution of floral integration and intra-floral modularity.
Effects of Allium roseum L. extracts on the proliferation and the differentiation of the acute myeloid leukemia cell line U937

Abstract Epidemiologic studies keep up the proposition that Allium vegetables can lower the risk of cancers. Acute myeloid leukemia (AML) cells exhibit high proliferative potency and have a reduced capacity of undergoing apoptosis and maturation. The beneficial effects of Allium seem related to the organosulfur products generated upon processing of these species. For this purpose, the aim of this study was to test Allium roseum fresh (FAE), crude (CAE) and dried (DAE) aqueous extracts for activity against the human acute leukemia cell line (U937). As assessed by flow cytometry, inhibited cell proliferation was in a dose‐dependent manner. Firstly, study showed that cell growth was inhibited with 20 mg/mL using FAE and CAE (60% and 73% respectively). Secondly, our experiments clearly indicate that all A. roseum extracts do not induce cell apoptosis. This was confirmed by the soft binding of Annexin V to phosphatidylserine. Finally, the high expression of macrophage's marker CD11 associated with adequate morphological changes proves clearly the differentiation aspect produced by A. roseum extract. Taken together, these data suggest that A. roseum could be a promising candidate for the alternative medicine in the field of cancer therapy.
Predictors of Mental Health Service Use among Children and Adolescents with and without Neurodevelopmental Disorders

ABSTRACT Introduction Compared to their neurotypical peers, children and adolescents with neurodevelopmental disorders (NDs) experience worse mental health outcomes, including greater service use and functional impairment. Few studies, however, have examined the neurodevelopmental contributions to mental health complexity among those seeking community-based mental health services. Methods Archival data from a publicly-funded mental health center was used to test the generalizability of a path model predicting service use among those with (n = 66) and without (n = 97) NDs. Results Those with NDs were found to experience more symptoms and had greater service use than those without NDs, and there were notable differences in the predictive pathways across groups. Specifically, the paths from internalizing challenges, early life adversity, and biological sex were only significant among the ND group. Conclusions These findings indicate that neurodevelopmental status is an important moderator of mental health outcomes that warrants consideration when treating complex cases.
Computed tomographic assessment of retrograde urohydropropulsion in male dogs and prediction of stone composition using Hounsfield unit in dogs and cats

Background Persistent uroliths after a cystotomy in dogs are a common cause of surgical failure. Objectives This study examined the following: the success rate of retrograde urohydropropulsion in male dogs using non-enhanced computed tomography (CT), whether the CT mean beam attenuation values in Hounsfield Units (mHU) measured in vivo could predict the urolithiasis composition and whether the selected reconstruction kernel may influence the measured mHU. Methods All dogs and cats that presented with lower urinary tract uroliths and had a non-enhanced CT preceding surgery were included. In male dogs, CT was performed after retrograde urohydropropulsion to detect the remaining urethral calculi. The percentage and location of persistent calculi were recorded. The images were reconstructed using three kernels, from smooth to ultrasharp, and the calculi mHU were measured. Results Sixty-five patients were included in the study. The success rate of retrograde urohydropropulsion in the 45 male dogs was 55.6% and 86.7% at the first and second attempts, respectively. The predominant components of the calculi were cystine (20), struvite (15), calcium oxalate (8), and urate (7). The convolution kernel influenced the mHU values (p < 0.05). The difference in mHU regarding the calculus composition was better assessed using the smoother kernel. A mHU greater than 1,000 HU was predictive of calcium oxalate calculi. Conclusions Non-enhanced CT is useful for controlling the success of retrograde urohydropropulsion. The mHU could allow a prediction of the calculus composition, particularly for calcium oxalate, which may help determine the therapeutic strategy.
The Integration of Perceived Usefulness, Ease of Use and Perceived Risk in Increasing Customer Usage Intention to Access E-channel during Covid-19: Evidence from Indonesia

This research aimed at investigating and analyzing how the integration of perceived usefulness, ease of use, and perceived risk increases the usage intention of Indihome e-channel customers during Covid-19 in the Jakarta Area. The research method used was quantitative research using Partial Least Square analysis and the SmartPLS program to analyze data. The number of samples taken was 180 respondents using closed questionnaires and distributing questionnaires online using e-questionnaires. Four hypotheses were proposed, resulting in three pathways positively affecting perceived usefulness and usage intention, namely ease of use and perceived risk. Meanwhile, perceived usefulness did not have a significant effect on usage intention.
Deformation Quantization for Actions of Kahlerian Lie Groups Part I: Fr\'echet Algebras

Introduction Notations and conventions Oscillatory integrals Tempered pairs for Kahlerian Lie groups Non-formal star-products Deformation of Frechet algebras Quantization of polarized symplectic symmetric spaces Quantization of Kahlerian Lie groups Deformation of $C^*$-algebras Bibliography
Relations between the Home Learning Environment and the Literacy and Mathematics Skills of Eight-Year-Old Canadian Children

The home learning environment includes parental activities, attitudes, affect, knowledge, and resources devoted to supporting children’s development, including literacy and mathematics skills. These factors are related to the academic performance of preschool children (aged 3 to 6 years), before formal schooling and possibly beyond. In the present research, we examined the home learning environment of Canadian families as reported by either the mother (n = 51) or father (n = 30) of their Grade 3 child (n = 81; Mage = 8.7 years; range 8 to 9 years of age). Importantly, mothers’ and fathers’ reports of the home learning environment for school children were similar. For literacy, parents’ knowledge of children’s books and attitudes toward literacy were related to children’s vocabulary skills; home literacy was not related to word reading skills. For mathematics, parents’ reports of the frequency of activities such as practicing arithmetic facts and their attitudes toward mathematics were related to children’s arithmetic fluency. Other aspects of the home learning environment (time spent helping with homework, parents’ math anxiety) were not related to children’s performance. These results suggest some continuity between home learning environments and academic skills after children’s transition to school.
Improving the Efficiency of the EMS-Based Smart City: A Novel Distributed Framework for Spatial Data

The smart city system, which is a type of enterprise management system (EMS), automatically manages cities and schedules resources efficiently based on spatial data generated by devices, such as the Internet of Things and mobile. However, with the increasing deployment of technologies, including sensor and location-based services, their ever-growing spatial data are no longer managed efficiently by traditional EMS. To overcome this issue, we present SeFrame, which is a spatially enabled framework for improving the efficiency of smart city EMS based on a distributed architecture. The framework supports a set of spatial queries, including: The range query, k-nearest neighbors query, and spatial join query. It benefits greatly from using the buffer-enabled partition method to eliminate duplicate results. In each partition, the local index based on combination of the quad-tree and grid index (CQG) significantly improves the spatial query efficiency in memory. CQG manages complex spatial objects, including a point, polygon, and polyline. By taking full advantage of the local index, SeFrame accesses skewed spatial data in constant time. In experiments, we demonstrated that the proposed method delivered superior performance in terms of scalability and query efficiency, in most cases.
Quantum scalar field theory on anti-de Sitter space

This thesis considers a real massive free quantum scalar field propagating with arbitrary coupling to $n$-dimensional anti-de Sitter space. Analytical expressions are found for the field modes and Feynman Green function. The condition for the equivalence of rotational vacuum states is also established. The rotational and thermal anti-commutator functions are then derived. A method is developed for computing the Hadamard renormalised vacuum and thermal expectation values of the quadratic field fluctuations and the stress-energy tensor. Results are obtained for $n=2$ to $n=11$, satisfying Wald's axioms and exhibiting the trace anomaly.
The story of long-term research sites and soil health in Canadian agriculture

Abstract Canada's interest in agricultural lands has changed with time from a desire of crop yields at Confederation through to discussions in the Senate on adaptation and resilience in 2018. Long-term research experiments (LTRs) have been present and utilized by federal and university researchers to provide answers throughout. Here we highlight the importance of LTRs by identifying the historical context of LTRs and soil health research in Canada. We then briefly describe the history and key results from select LTRs and illustrate the wealth of information collected from the North American Project to Evaluate Soil Health Measurements cross-country point-in-time soil sampling from these LTRs. We discuss the LTRs, and the knowledge gained from them, with the hope that by showing the distinctive narratives associated with each of these study sites, researchers will be inspired to use them to address their research questions and make sound predictions to facilitate the adaptation of Canadian agroecosystems to climate challenges. Through identifying the value generated by these unique LTRs, we hope that the importance of these sites will inspire not only their continued maintenance but also the next generation of LTRs.
Tapered foils favor traveling-wave kinematics to enhance the performance of flapping propulsion

We report results from an experimental investigation on the ﬂuid-structure interactions of ﬂapping foils with tapered thickness proﬁles actuated in a quiescent viscous ﬂuid. We seek to assess the propulsive performance of two sets of ﬂapping foils; one with a ﬁxed average bending stiffness, the other one with a ﬁxed mass ratio. We ﬁnd that foils that are stiffer towards the root than at their tip produce higher values of thrust and efﬁciency simultaneously, over a wide range of driving frequencies. Our kinematic analysis reveals that more tapered foils naturally develop a traveling-wave-dominated motion. We perform particle image velocimetry to relate the dynamics and kinematics of the ﬂapping foils to the dynamics of the surrounding ﬂuid. For more tapered foils, we observe a stronger vorticity production and a wake pattern with enhanced downstream speed of the ﬂuid. Our paper provides experimental evidence that tapered stiffness distributions robustly enhances propulsive performance.
Dissipative Bohmian mechanics: A trajectory analysis of wave-packet dynamics in viscid media

Classical viscid media are quite common in our everyday life. However, we are not used to find such media in quantum mechanics and much less to analyze their effects on the dynamics of quantum systems. Here we provide a Bohmian analysis of the friction dynamics led by hypothetical quantum viscid media, which will be simulated by means of the so-called Caldirola-Kanai Hamiltonian. As it is shown, this causal model enables a better understanding of phenomena, such as quantum localization (“quantum freezing”) or the quantum-to-classical transition. We have analyzed these phenomena in a series of paradigmatic situations of quantum mechanics, such as free wave-packet evolution, motion in a linear potential, damped harmonic oscillator and interference dynamics.
Versatile Motion Generation of Magnetic Origami Spring Robots in the Uniform Magnetic Field

Magnetic soft robots have attracted widespread attention for their untethered, remotely operated, and compliant deformation characteristics. Earlier work has demonstrated magnetic origami robots' diverse locomotion capabilities. This letter will focus on the motion generation and open-loop control of an untethered magnetic flexible robot with a stretch-twist coupling origami spring (OS) skeleton only using uniform magnetic field control. We investigate the associated motion generation mechanism and the corresponding control signals for the magnetic spring robot (MSR). The MSR can perform in-plane crawling (<italic>Worm Crawling</italic>) and perpendicular in-plane crawling (<italic>Crab Crawling</italic>) under two-dimensional magnetic signal inputs. Moreover, the OS's stretch-twist coupling characteristic is utilized to achieve axial <italic>Rolling Motion</italic> with axial magnetization configuration. We further experimentally tested the performance of three motions with average normalized velocities of 0.34<inline-formula><tex-math notation="LaTeX">$\pm$</tex-math></inline-formula>0.039(body length/s), 0.054<inline-formula><tex-math notation="LaTeX">$\pm$</tex-math></inline-formula>0.0066(body length/s), and 1.46<inline-formula><tex-math notation="LaTeX">$\pm$</tex-math></inline-formula>0.069(body length/s), respectively.
Rhizobia inhabiting Clitoria ternatea L. in Anuradhapura District, Sri Lanka: An assessment of stress tolerance and genetic diversity

Legume-Rhizobial symbiosis plays a greater agronomical and ecological significance as it provides fixed nitrogen through Biological Nitrogen Fixation. Clitoria ternatea is a leguminous plant that hosts a wide range of rhizobial strains. Even though it is a widely distributed plant, comprehensive information and studies conducted on the rhizobial C. ternatea This study aimed to identify different stress-tolerant rhizobial strains inhabiting root nodules of drought. (PEG) concentration. There was no observable pattern in the growth of rhizobial strains in different physiological conditions. The twelve rhizobial strains which showed high tolerance to extreme physiological conditions were subjected to a combination of physiological stress conditions of pH 8.0, temperature 36 °C, 3.0 % NaCl and 0.4 % PEG. The maximum growth in combination physiological study was observed in a strain collected at the Palugaswewa site. According to the dendrogram prepared by the Enterobacterial Repetitive Intergenic Consensus (ERIC) profile, twelve strains are genetically diverse, as they belonged to11 clusters at 69.89 % of similarity level. These stress-tolerant rhizobial strains could be used for further studies on cross-inoculation of crop legumes as an alternative to the nitrogenous fertilizers.