jimnoneill/paper-to-field-training huggingface dataset:
Nonlinear Precoding for Phase-Quantized Constant-Envelope Massive MU-MIMO-OFDM

Field: Engineering (Physical Sciences)

We propose a nonlinear phase-quantized constant-envelope precoding algorithm for the massive multi-user (MU) multiple-input multiple-output (MIMO) downlink. Specifically, we adapt the squared-infinity norm Douglas-Rachford splitting (SQUID) precoder to systems that use oversampling digital-to-analog converters (DACs) at the base station (BS) and orthogonal frequency-division multiplexing (OFDM) to communicate over frequency-selective channels. We demonstrate that the proposed SQUID-OFDM precoder is able to generate transmit signals that are constrained to constant envelope, which enables the use of power-efficient analog radio-frequency circuitry at the BS. By quantizing the phase of the resulting constant-envelope signal, we obtain a finite-cardinality transmit signal that can be synthesized by low-resolution (e.g., 1-bit) DACs. We use error-rate simulations to demonstrate the superiority of SQUID-OFDM over linear-quantized precoders for massive MU-MIMO-OFDM systems.
Dielectric relaxation studies. III. Allyl bromide and allyl ethers in liquid state

Field: Chemistry (Physical Sciences)

Complex dielectric permittivity measurements are reported at radio and microwave frequencies for four allyl compounds in the temperature range 30–70 °C. The analysis of dielectric data in terms of Cole–Cole arc, multiple relaxation times, and Higasi's distribution function reveals that the overall molecular rotation is the dominant relaxation mechanism in these unsaturated compounds. The activation parameters are evaluated assuming dielectric relaxation to be a rate process.
Histone demethylase KDM6A promotes somatic cell reprogramming by epigenetically regulating the PTEN and IL-6 signal pathways

Field: Biochemistry, Genetics and Molecular Biology (Life Sciences)

Abstract Aberrant epigenetic reprogramming is one of the major barriers for somatic cell reprogramming. Although our previous study has indicated that H3K27me3 demethylase KDM6A can improve the nuclear reprogramming efficiency, the mechanism remains unclear. In this study, we demonstrate that the overexpression of Kdm6a may improve induced pluripotent stem cell (iPSC) reprogramming efficiency in a demethylase enzymatic activity-dependent manner. KDM6A erased H3K27me3 on pluripotency- and metabolism-related genes, and consequently facilitated changing the gene expression profile and metabolic pattern to an intermediate state. Furthermore, KDM6A may promote IL-6 expression, and the secreted IL-6 may further improve iPSC reprogramming efficiency. In addition, KDM6A may promote PTEN expression to decrease p-AKT and p-mTOR levels, which in turn facilitates reprogramming. Overall, our results reveal that KDM6A may promote iPSC reprogramming efficiency by accelerating changes in the gene expression profile and the metabolic pattern in a demethylation-activity-dependent manner. These results may provide an insight into the relationship between epigenomics, transcriptomics, metabolomics, and reprogramming.
Design of Cesium Reservoir Critical Component Experiment for S-PRIME

Field: Energy (Physical Sciences)

The purpose of this experiment is to confirm the operating temperatures and pressures of the cesium graphite integral reservoir design for the Space Power Reactor In‐Core Multicell Evolutionary (S‐PRIME) thermionic reactor. The test will verify the reservoir performance under both steady state and transient situations. The special cylindrical TFE (Thermionic Fuel Element) cell used for this test has a prototypic reservoir design and electrical heating for the emitter. It is similar to cylindrical converters designed in the past such as CC‐1X (General Atomics 1988) built under the TFE verification program, except for the reservoir details. The S‐PRIME TFE has six cells and one graphite reservoir. The reservoir is integral to one of the end cells and is thermally coupled to both of the emitters via the emitter sleeve and the collector via a section of a sheath insulator.
EFFECT OF OUTSOURCING ON EMPLOYMENT RELATIONS IN NIGERIA: A STUDY OF SHELL PETROLEUM PRODUCING AND DEVELOPMENT COMPANY

Field: Business, Management and Accounting (Social Sciences)

This study investigates the effect of outsourcing practice on employment relations in Multinational Corporations with special focus on Shell Petroleum Producing and Development Company (SPDC). The study also examined the importance of employment relations in organizational performance. Descriptive research methodology was adopted in this study. The questionnaire that was administered in the field survey was the abbreviated version of Hewitt’s Human Resource Outsourcing Survey Questionnaire. The research findings showed that: the management of SPDC engages in unfair labour practices in order to trivialize workers conditions of service; mere transferring human resource management to a third party does not necessarily improve labour-management relations; outsourcing affects workers’ performance in Nigeria; there is positive relationship between employment relations and organisational performance. Based on the research findings, it recommends that the management of SPDC must discontinue its unfair labour practices; should improve the working conditions of its contract staff and show more interest in their career development; should focus attention on fostering mutual employment relations by ensuring that all its human resource policies are not counter-productive especially its outsourcing policy. JEL: L20; L23; L53 <p> </p><p><strong> Article visualizations:</strong></p><p><img src="/-counters-/edu_01/0799/a.php" alt="Hit counter" /></p>
Systemic nicotine stimulates dopamine release in nucleus accumbens: re-evaluation of the role of N-methyl-D-aspartate receptors in the ventral tegmental area.

Field: Neuroscience (Life Sciences)

Systemic nicotine stimulates dopamine (DA) release in the nucleus accumbens (NAcc), and N-methyl-D-aspartate (NMDA) receptors in the ventral tegmental area (VTA) appear to be involved. However, it is not known whether the secretion of DA elicited by nicotine depends on the tonic and/or phasic activation of NMDA receptors by glutamate (Glu). To clarify this, in vivo microdialysis was conducted in freely moving, alert rats to measure DA and Glu overflows in the NAcc and Glu in the VTA. Nicotine (0.065, 0.09, or 0.135 mg/kg delivered i.v. at 0.09 mg/kg/60 s via a jugular cannula) dose dependently stimulated NAcc DA secretion (P <.05). However, 0.065 mg/kg nicotine failed to stimulate Glu release in the VTA, whereas higher doses of nicotine (> or =0.09 mg/kg) were effective (P <.05). Administering the competitive NMDA receptor antagonists, 2-amino-5-phosphonopentanoic acid (AP-5; 1 mM) or 0.2 mM cis-4-phosphonomethyl-2-piperidine carboxylic acid (CGS 19755) through the VTA probe, abolished NAcc DA release after 0.065 mg/kg nicotine (P <.01) and reduced the response to 0.09 mg/kg nicotine. Therefore, the NAcc DA response to a relatively low dose of nicotine depends on the tonic activation of NMDA receptors in the VTA. In contrast, infusing 1 mM 2-amino-5-phosphonopentanoic acid or 1 mM 6-cyano-7-nitroquinoxaline-2,3-dione (CNQX), an alpha-amino-3-hydroxy-5-methylisoxazole-4-propionate (AMPA) receptor antagonist, into the NAcc through the microdialysis probe had no effect on NAcc DA secretion in response to 0.09 mg/kg nicotine. These findings, coupled with data showing that Glu secretion in the VTA was stimulated only by higher doses of nicotine, indicate that the phasic release of VTA Glu is involved in the NAcc DA response to higher doses of nicotine (> or =0.09 mg/kg).
An Analogical Approach to Colors and Symbolism in Romanian and Turkish Folk Art

Field: Arts and Humanities (Social Sciences)

Folk art is defined as creation that does not belong to the classical or modern arts but is generally included in traditional or domestic handcraft production. Works of folk art are generally of anonymous origin; their producers have not graduated from aesthetic or artistic studies in the narrowest sense. The discovery of the phenomenon of folk art as a valuable part of culture is due to the development of the science of art history at the end of the 19th century. From the aesthetic and historical point of view, it occurred in parallel with the gradual disappearance of this phenomenon in the European societies that were in the process of industrialization. At the end of the 19th century, with the gradual disappearance of handicraft traditions in Central and Western Europe and later in Eastern Europe, folk art lost its original foundation. Due to theories of primitivism, popular art was given special attention during this period by - and thanks to -artists of the modernist trend. During this period, folk clothes and clothing motifs were seen frequently. In particular, various pictures, colors, symbols, lines and images representing flowers were used quite often. What the grounds for all these people are, their importance, their depth, why they are repeated and how they are repetitive patterns are hidden in these clothes and works. Preservation of the national culture and the local folklore is very important and we think, first and foremost, that we should understand the significance of these symbols and colors that represent our heritage. The aim of this study is to analyze colors and symbols in Romanian and Turkish Folk Art with an analogical approach. In this study, examples of colors and symbols in Romanian and Turkish Folk Art were examined from areas such as clothing, weaving and ceramics and the use of symbols, the meanings of colors were conveyed and supported by patterns and it was concluded that there were similarities as well as regional differences between the two countries.
Fracture and Carbonate Reservoir Characterization Using Sequential Hybrid Seismic Rock Physics, Statistic and Artificial Neural Network

Field: Earth and Planetary Sciences (Physical Sciences)

Summary Tiaka field is located in the Senoro-Toili block at the eastern arm of Sulawesi, Indonesia. The main hydrocarbon bearing reservoir is a lower Miocene carbonate sequences which posses a dual porosity system both matrix and fracture . This carbonate complexity is required special treatment to precisely characterize the reservoir. In this paper, the latest technology for carbonate complex reservoir characterization using hybrid seismic rock physics, statistic and artificial neural network will be presented. This methodology enable in integrating a huge size of various data set to produce "coherence correlation" among input data and their target. The data set consist of core, electric logs , multi-attribute either pre-stack or post-stack of a 2 D seismic lines and seismic rock physics. The whole input data was trained using workflow and combined with statistic and artificial neural network to predict reservoir parameters. This method is applied to predict the lateral lithofacies, fracture, porosity, fluid or hydrocarbon distribution. By using these approach , its can produce high accuracy on the reservoir parameter prediction. The accuracy of testing process show that predicted parameter reservoir on the average 90 percent matched reservoir parameter in the existing wells.
The role performed by the teacher’s question in the learning of quadratic function in an exploratory mathematics class

Field: Social Sciences (Social Sciences)

Communication plays a key role in teaching and learning processes. Questions are a communicational act greatly used by teachers to structure their discourse, establish dynamics, and foster interaction between the different participants in the classroom. In view of these potentialities of questions in the classroom context, we have developed a teaching experiment with the aim of understand the role of the teacher's question in the learning of topics on functions. Considering the nature of this aim, a methodology of qualitative and interpretative nature was used. The data collection was based on the students’ written productions and on the audio and video recordings of a mathematics class of a Grade 10 educational group (in northern Portugal). Data analysis is based on content analysis techniques, crossing collected data and categories emerging from the literature. The study revealed that the teacher’s questions alternated between confirmation, focalization, and inquiry, with inquiry prevailing. Questions aimed at testing the student’s knowledge gave both the teacher and actual student important information. Questions that focused the student’s attention on a particular detail enabled the students to organize their reasoning and structure their answer. Questions that required the students to explain or justify their thoughts were those that proved to most contribute to the development of the student’s reasoning process.
Combination Therapy With Ticarcillin and Sulfamethoxazole-Trimethoprim for Infections in Patients With Cancer

Field: Medicine (Health Sciences)

Intravenous (IV) antibiotic therapy with a combination of ticarcillin disodium and sulfamethoxazole-trimethoprim was administered as initial empiric treatment of 218 febrile episodes in patients with cancer. Seventy-nine (77%) of 102 episodes of infection were cured, and the temperature returned to normal in 88 (74%) of 199 febrile episodes without proved infection. The response rates for the major sites of infection were as follows: septicemia, 89%; pneumonia, 52%, soft-tissue infections, 85%; and urinary tract infections, 100%. The cure rate of Gram-negative aerobic bacillary infections was 87%. No significant influence of initial neutrophil count on response rate was noted, although patients in whom the neutrophil count increased during therapy had a higher response rate (84%) than patients in whom the neutrophil count decreased or remained stable (72%). The combination of ticarcillin and IV sulfamethoxazole-trimethoprim is satisfactory initial empiric antibiotic therapy for febrile episodes in neutropenic patients with cancer.
[Combatting depression using the collaborative care model].

Field: Health Professions (Health Sciences)

Chronic and prevalent conditions such as depression need a different, more integrated approach than acute disorders. The treatment of chronic disorders can be best organized within a chronic care model, focusing on self-management by the patient and continuous monitoring of symptoms. The collaborative care model is a promising treatment model for depression. The added value of this model lies in a care manager supporting the general practitioner, the structured monitoring of symptoms and easy access to a consultant psychiatrist. In the Dutch situation, the collaborative care model may be a reinforcement of the primary care treatment for depression while in specialized mental health care, this model may reinforce collaboration with primary care colleagues.
EFFICACY OF NIGELLA SATIVA IN THE OROFACIAL REGION: A REVIEW

Field: Dentistry (Health Sciences)

Nigella sativa (N. sativa), commonly known as black seed or black cumin, is a medicinal plant with a rich history in traditional medicine systems, including Unani, Ayurveda, and Prophetic Medicine. Its seeds and oil are abundant in bioactive compounds, particularly thymoquinone (TQ), which exhibit antioxidant, anti-inflammatory, antimicrobial, and immunomodulatory properties. These pharmacological attributes make N. sativa a promising therapeutic agent for orofacial conditions such as periodontitis, gingivitis, oral mucositis, orofacial pain, Behcet’s disease-related ulcerations, and otitis media. This comprehensive review synthesizes preclinical and clinical evidence on the efficacy of N. sativa and its active constituent, thymoquinone, in the orofacial region. It explores the underlying mechanisms of action, evaluates therapeutic potential, and critically assesses the limitations of existing research. The review also proposes future directions for integrating N. sativa into dental therapeutics and hygiene products, emphasizing the need for standardized formulations and robust clinical trials to validate its efficacy and safety in clinical practice.
Maintaining embryonic stem cell pluripotency with Wnt signaling

Field: Biochemistry, Genetics and Molecular Biology (Life Sciences)

Wnt signaling pathways control lineage specification in vertebrate embryos and regulate pluripotency in embryonic stem (ES) cells, but how the balance between progenitor self-renewal and differentiation is achieved during axis specification and tissue patterning remains highly controversial. The context- and stage-specific effects of the different Wnt pathways produce complex and sometimes opposite outcomes that help to generate embryonic cell diversity. Although the results of recent studies of the Wnt/β-catenin pathway in ES cells appear to be surprising and controversial, they converge on the same conserved mechanism that leads to the inactivation of TCF3-mediated repression.
Enhancing Service-Oriented Behaviors in an Asian Business Context: Lessons From a Pakistani Bank

Field: Business, Management and Accounting (Social Sciences)

This article examines how service organizations can enhance employees’ customer orientation, often exhibited through the display of service-oriented citizenship behaviors. The study, in this respect, quantitatively analyses the relationships between organizational distributive justice, leader-member exchange (LMX), and team-member exchange (TMX) on customer orientation. Data were gathered through a survey of 658 middle managers working in a Pakistani bank and were analyzed via full structural equation modelling. The findings reveal that organizational distributive justice, LMX, and TMX are key predictors of customer orientation. Specifically, the analysis suggests that the relationships between organizational distributive justice and LMX with customer orientation are mediated partially and fully, respectively, by TMX. Simultaneously, TMX partially mediates the relationship between organizational tenure and customer orientation. Our study contributes to both theory and practice of service organization functioning by signifying the importance of the organization’s fair distribution of rewards as well as it’s leader’s and co-worker’s behaviors in affecting organizationally desired employee behaviors and thereby, arguably, enabling positive organizational outcomes. Service organizations can, based on our findings, create a culture of service excellence by placing emphasis on specific elements at the organizational, leadership, and team level.
Alemtuzumab for Cytolytic Induction of Immunosuppression in Heart Transplant Recipients

Field: Medicine (Health Sciences)

Objective To review available evidence about the safety and efficacy of alemtuzumab for induction of immunosuppression in heart transplant recipients. Data sources Searches of MEDLINE, EMBASE, and Cochrane databases were conducted. Key search terms included alemtuzumab, Campath-1H, CD52, lymphocyte, cytolytic, induction, immunosuppression, rejection, and cardiac transplantation. Additional pertinent data were identified through a search of abstracts from major transplant meetings. Study Selection and Data Extraction All English-language articles and abstracts identified from the data sources were evaluated. All primary data were eligible for inclusion if they evaluated the safety or efficacy of alemtuzumab for induction of immunosuppression in heart transplant patients. One retrospective cohort, 1 case series, 1 case-control series, and 1 open-label trial were identified and included for review. Data Synthesis Acute cellular rejection occurs in 40% to 70% of heart transplant recipients within the first 6 months after transplant and is associated with significant morbidity and mortality. Depleting and nondepleting antibodies have displayed positive outcomes in inducing immunosuppression; however, the ideal induction strategy that balances efficacy and toxicity remains elusive. Alemtuzumab, a cytolytic anti-CD52 antibody, has been used to induce immunosuppression in kidney, pancreas, liver, intestine, and lung transplant recipients, and its use in heart transplant has been investigated. Studies of use of alemtuzumab to induce immunosuppression in heart transplant patients have shown low rates of rejection; however, it has not been directly compared with other immunosuppression-inducing agents and safety data are limited. Conclusions Although alemtuzumab may be a practical option for inducing immunosuppression, data are insufficient to recommend its routine use in deference to more established agents. Large, randomized clinical trials with extended durations of follow-up must be conducted to characterize its efficacy and safety further.
Multi-criteria analysis to compare multiple risks associated with management alternatives in planted forests

Field: Environmental Science (Physical Sciences)

Aim of study: Adaptation of silviculture in planted forest may help to mitigate damage due to biotic and abiotic hazards. However, compromises have to be found because it is not possible to minimize the risk from all hazards through application of a single forest management approach. The objective of this study was to improve a multi-criteria risk analysis (MCRA) method that makes it possible to rank forest management alternatives (FMAs) according to multiple risks. Material and Methods: We defined eight FMAs for maritime pine forests in France, Spain and Portugal. We used as the definition of risk the combination of hazard, susceptibility and exposure. Hazard level was estimated using archive data on occurrence and severity of damaging agents over the last few decades. Forest susceptibility to hazards was evaluated by experts who scored the effect on stand resistance of eleven silvicultural operations characterizing each FMA. Exposure was estimated as value at stake, which combined forest standing volume, simulated with forest growth models, and wood prices. Main Results: Using the PROMETHEE algorithm, we found that the overall ranking of FMAs was consistent across all countries, with short rotation plantations to produce pulpwood or energy wood were the least at risk. The ranking was mainly driven by forest values at stake. We found that by improving the accuracy of forest values exposed to damage, based on growth models and representative wood prices, the MCRA outcomes were more useful and realistic. Research highlights: Our methodology provides a relevant framework to design FMAs that would minimize risks while maintaining income. Keywords: Pinus pinaster; vulnerability; hazards; growth modelling; expert assessment; wood price; southwestern Europe.
The length scale for sub-grid-scale parameterization with anisotropic resolution

Field: Mathematics (Physical Sciences)

Use of the Smagorinsky eddy-viscosity formulation and related schemes for subgrid-scale parameterization of large eddy simulation models requires specification of a single length scale, earlier related by Lilly to the scale of filtering and/or numerical resolution. An anisotropic integration of the Kolmogoroff enstrophy spectrum allows generalization of that relationship to anisotropic resolution. It is found that the Deardorff assumption is reasonably accurate for small anisotropies and can be simply improved for larger values.
Gender, Culture and Human Rights : Reclaiming Universalism

Field: Arts and Humanities (Social Sciences)

In recent years, feminist theory has increasingly defined itself in opposition to universalism and to discourses of human rights. Rejecting the troubled legacies of Enlightenment thinking, feminists have questioned the very premises upon which the international human rights movement is based. Rather than abandoning human rights discourse, however, this book argues that feminism should reclaim the universal and reconstruct the theory and practice of human rights. Discourse ethics and its post-metaphysical defence of universalism is offered as a key to this process of reconstruction.