Miracle-dz/UniFAR-FTUs huggingface dataset:
Augmented Collaborative Filtering for Sparseness Reduction in Personalized POI Recommendation

As mobile device penetration increases, it has become pervasive for images to be associated with locations in the form of geotags. Geotags bridge the gap between the physical world and the cyberspace, giving rise to new opportunities to extract further insights into user preferences and behaviors. In this article, we aim to exploit geotagged photos from online photo-sharing sites for the purpose of personalized Point-of-Interest (POI) recommendation. Owing to the fact that most users have only very limited travel experiences, data sparseness poses a formidable challenge to personalized POI recommendation. To alleviate data sparseness, we propose to augment current collaborative filtering algorithms along from multiple perspectives. Specifically, hybrid preference cues comprising user-uploaded and user-favored photos are harvested to study users’ tastes. Moreover, heterogeneous high-order relationship information is jointly captured from user social networks and POI multimodal contents with hypergraph models. We also build upon the matrix factorization algorithm to integrate the disparate sources of preference and relationship information, and apply our approach to directly optimize user preference rankings. Extensive experiments on a large and publicly accessible dataset well verified the potential of our approach for addressing data sparseness and offering quality recommendations to users, especially for those who have only limited travel experiences.
Quench Behaviors of Monofilament Iron-Based Sr0.6K0.4Fe2As2 Tape With Ag Sheath at Different Temperatures

For practical application, stability investigations of Sr0.6K0. 4Fe2As2 conductors are of great importance. In this paper, quench development and propagation in Ag sheath are experimentally and numerically investigated. Measurements are performed as a function of transport current for several operating temperatures between 19 and 35 K. This work focuses on the evaluation of quench development and the estimation of normal zone propagation velocity (NZPV) and minimum quench energy (MQE). The experimentally obtained temperature dependence of NZPV is compared with a simplified adiabatic model. In addition, the NZPV and the MQE of the sample are compared with those of a low-temperature superconductor (LTS) and a high-temperature superconductor (HTS). According to the results, the basic quench characteristics fit between those of LTS and HTS materials.
A flow-through infusion calorimeter for measuring muscle energetics during pharmacological interventions

We report on the design, development, and performance of a new calorimeter for measuring the heat-production and force-development of tiny samples of muscle tissue, while they are exposed to time-varying concentrations of a pharmacological agent. Fluid is delivered to a muscle sample by a syringe pump synchronized with a servo-controlled gravity-fed flow system. The rate of muscle heat production is inferred from voltages arising from a pair of thermopiles, to a resolution of approximately 6nW, providing a signal:noise ratio of approximately 1350. We demonstrate the utility of the instrument by selectively chemically disabling and forcibly engaging the muscle's molecular force development mechanism, while measuring muscle heat-rate and force. These data reveal for the first time that the energetic cost of muscle activation is invariant with muscle length. In a separate experiment, we measure the total heat production of a muscle as it transitions into chemically-induced contracture.
Immunoadjuvant activity of amphotericin B as displayed in mice infected with Candida albicans

Mice receiving a single intraperitoneal injection of amphotericin B showed increased resistance to subsequent challenge with either Candida albicans or Staphylococcus aureus. This enhancement of resistance was obvious in terms of both survival criteria and clearance of the intravenously injected organism from different organs. The protective effect of amphotericin B was conditioned by dose, time of drug administration, and size of yeast or bacterial inoculum and was reversed by cyclophosphamide. Effector cells from mice treated with amphotericin B displayed enhanced fungicidal activity in vitro as measured in a short-term 51Cr release assay. Macrophages from intact animals exposed in vitro to amphotericin B also acquired strong candidacidal reactivity.
Issues in the Cambridge Controversies

As I understand Professor Bernstein's (1985) comments, he claims to disagree with me on three points relating to the specification of the primary issues in the Cambridge controversies, and on one point about how a methodological resolution of the controversies may be achieved. The first point relating to the specification of primary issues concerns my contention that the methodological significance attributed to a comparison of equilibrium positions remains the unresolved source of dispute between neoclassicists and post Keynesians. Bernstein claims to disagree with this contention. He states (p. 608) that Arrow, Debreu, and Hahn "fully accept the fact that the description of an equilibrium position is not the same thing as explaining the historical process of getting there," and I agree-I even cite Hahn on this point (Cohen, 1984, p. 621). I go on to argue that, nonetheless, there remains an unresolved dispute between neoclassicists and post Keynesians over what is the primary issue: explaining the efficient allocation of given resources (where equilibrium positions alone are methodologically adequate) or explaining the historical process of accumulation (where equilibrium positions alone are methodologically inadequate). Thus, when Bernstein (p. 608) says, "While I believe Professor Cohen is correct in arguing that neoclassical and Post-Keynesian economists agree that reswitching and capital reversal are theoretical (perhaps even empirical) possibilities, I do not believe that they agree about the significance of the issue," it seems to me that he is not disagreeing with my argument, but simply restating it.
Public Goods, Congestion and Population Size: A Non-Parametric Analysis Using French Data

We specify a flexible general framework of the effect of municipality size on the provision of an excludable public good. The model accounts for demand side factors which affect the quality of the public good. Previous literature has recognized that municipality size should have a non-linear effect on the quality of public good provision and to this end different papers have applied a range of alternative parametric specifications. Using a very large sample of French "communes" we are able to estimate the effect of municipality size semi-parametrically. We compare our results to the parametric studies and demonstrate that none of the typically-estimated parametric models fit the data particularly well. Furthermore, in contrast with the parametric specifications, we find evidence of the U-shaped relationship between per-capita public expenditures and population which is predicted by theory.
Indexed Commodity Futures and the Risk and Return of Institutional Portfolios

We examine the risk and return properties of equity/bond portfolios before and after inclusion of a diversified portfolio of long commodity futures contracts. Inclusion of the commodities, which are proxied by the CRB and GSCI indices from 1970 to 1990, enhances the risk and return characteristics of the overall portfolio. However, the improvement of the risk/return characteristic is superior for the decade of the seventies than for the decade of the eighties. This result is driven by the high-inflation 1970s in which commodity futures serve as an inflation hedge. In addition, commodity futures prices are shown to have modest inflation predictive ability.
More than Dollars for Scholars: The Impact of the Dell Scholars Program on College Access, Persistence, and Degree Attainment

ABSTRACT:Socioeconomic inequalities in college completion have widened over time. A critical question is how to support low-income and first-generation students to achieve college success. We investigate one effort, the Dell Scholars Program, which provides a combination of financial support and individualized advising to selected students who attend institutions throughout the United States. Using two quasi-experimental analytic strategies, regression discontinuity and difference-in-differences with a matched comparison sample, we find consistent evidence that being selected as a Dell Scholar leads to substantially higher rates of bachelor'sdegree completion within six years, as well improvements on multiple other measures of college success.
A Near-Field Technique Based on PZMI, GA, and ANN: Application to Power Electronics Systems

In this paper, we propose a new method for modeling the electromagnetic radiation of power electronics systems. This method is based on coupling three powerful techniques: the genetic algorithm (GA) used for the optimization problem, the pseudo-Zernike moment invariant (PZMI) descriptors for pattern recognition, and the neural networks for classification of radiating sources. This modeling approach has been applied to recognize the radiating sources of a dc-dc converter. The model has been validated using measurement results of the magnetic radiation above the converter. The results of the experimental measurements have shown that the characteristics provided by the PZMI descriptors are very robust. So, the proposed method can greatly accelerate the convergence of the inverse method based on GA.
Barriers and facilitators to self-care communication during medical appointments in the United States for adults with type 2 diabetes

Objective Diabetes self-care is challenging and requires effective patient–provider communication to achieve optimal treatment outcomes. This study explored perceptions of barriers and facilitators to diabetes self-care communication during medical appointments. Design Qualitative study using in-depth interviews with a semistructured interview guide. Participants Thirty-four patients with type 2 diabetes and 19 physicians who treat type 2 diabetes. Results Physicians described some patients as reluctant to discuss their self-care behaviors primarily because of fear of being judged, guilt, and shame. Similarly, patients described reluctant communication resulting from fear of being judged and shame, particularly shame surrounding food intake and weight. Physicians and patients recommended trust, nonjudgmental acceptance, open/honest communication, and providing patients hope for living with diabetes as important factors for improving self-care communication. Further, patients stressed the clinical benefits of physicians directly addressing poor self-care behaviors while physicians described having few strategies to address these difficulties. Conclusions Physician–patient self-care communication barriers included patients’ reluctance to discuss self-care behaviors and physicians’ perceptions of few options to address this reluctance. Treatment recommendations stressed the importance of establishing trusting, nonjudgmental and open patient–provider communication for optimal diabetes treatment. Medical education is needed to improve physicians’ strategies for addressing self-care communication during medical appointments.
Chromosome abnormalities in rabbit preimplantation blastocysts induced by superovulation.

While there are undoubtedly multiple causes of spontaneous abortion and congenital birth defects, high incidences of chromosomal abnormalities in human abortuses (Carr, 1965; Geneva Conference, 1966; Makino & co\x=req-\ authors, 1967; Ikeuchi, Sasaki, Kohno, Hayata & Fujimoto, 1972), and in early embryos of the pig (McFeely, 1967) suggest that chromosomal imbalance may be one of the primary causes of early embryonic death. Excessive administration of HCG has been reported to affect sperm capacitation in rabbits (Soupart, 1967; Wettemann & Hafs, 1970), and the development ofthe zona pellucida in baboons (Katzberg & Hendrickx, 1966). Recently,
Nucleosides Part LXVI I[ 1 ]: Synthesis of 4-Amino-7(8H)Pteridinone-N8-Nucleosides—Structural Analogs of Adenosine

Various 4-amino-7(8H)pteridones (6, 12, 14, 15, 20, 22) have been glycosylated with 1-chloro-2′-deoxy-D-ribofuranose derivatives (25, 26) applying the new DBU-salt method to form the N8-2′-deoxy-D-ribofuranosides (27–36) which can be regarded as 2′-deoxyadenosine analogs. Analogously reacted the 2-N,N-dimethyl-amino-methyleneimino-7(8H)pteridones (43–48) to give preferentially the corresponding N8-ß-D-anomers (49–55). Ribosylation with 1-bromo-2,3,5-tri-O-benzoyl-a-D-ribofuranose (56) proceeded as well with 6, 12, 15, 45, and 46 to yield to N8-ß-D-ribofuranosides 57–61. Sugar deprotection led to the free N8-2′-deoxy-ß-D-ribofuranosides 37–42 and N8-ß-D-ribofurano-sides 62–65, respectively. Glycosylations via the silyl-method under Vorbrüggen conditions led with 6, 12 and 15 to the same results, however, 4-amino-6-phenyl-7(8H)pteridone (14) reacted differently forming the N1-ß-D-ribofuranosides (71, 79) and the N1-2′-deoxy-α-and ß-D-ribofuranosides 73, 74, 77, 78. The assignments of the structures have been achieved by 1H-NMR- and UV-spectra. C,H,N-elemental analyses account for the composition.
ABC of nutrition. Nutrition for pregnancy.

Women intending another pri had had a baby with a neural t' entered into a multicentre tria by Professor RW Smithells. I Only three out of 387 wome periconceptional Pregnavite I (containing 0 4 mg folic acid/c vitamins, iron, and calcium) s had a baby with a neural tube 4 compared with 24 out of493 ii unsupplemented group (rate ( supplemented group). This w randomised or blind trial and trial is underway. Folate deficiency is suspect folate antagonist amethopteri tube defects in animals and pr and in prospective studies woi bore babies with neural tube d lower red cell folate concentra pregnancy.
Relationship Between Collateral Status, Contrast Transit, and Contrast Density in Acute Ischemic Stroke

Background and Purpose— Collateral circulation is recognized to influence the life expectancy of the ischemic penumbra in acute ischemic stroke. The best method to quantify collateral status on acute imaging is uncertain. We aimed to determine the relationship between visual collateral status, quantitative collateral assessments, baseline computed tomographic perfusion measures, and tissue outcomes on follow-up imaging. Methods— Sixty-six consecutive patients with acute ischemic stroke clinically eligible for recanalization therapy and with M1 or M2 middle cerebral artery occlusion were evaluated. We compared the visual collateral scoring with measures of contrast peak time delay and contrast peak density. We also compared these measures for their ability to predict perfusion lesion and infarct core volumes, final infarct, and infarct growth. Results— Shorter contrast peak time delay (P=0.041) and higher contrast peak density (P=0.002) were associated with good collateral status. Shorter contrast peak time delay correlated with higher contrast peak density (&bgr;=−4.413; P=0.037). In logistic regression analysis after adjustment for age, sex, onset–computed tomographic time, and occlusion site, higher contrast peak density was independently associated with good collateral status (P=0.009). Multiple regression analysis showed that higher contrast peak density was an independent predictor of smaller perfusion lesion volume (P=0.029), smaller ischemic core volume (P=0.044), smaller follow-up infarct volume (P=0.005), and smaller infarct growth volume (P=0.010). Conclusions— Visual collateral status, contrast peak density, and contrast peak time delay were inter-related, and good collateral status was strongly associated with contrast peak density. Contrast peak density in collateral vessel may be an important factor in tissue fate in acute ischemic stroke.
The role of leadership in addressing school violence : a case study of two South African schools.

This study sought to understand the role of leadership in addressing school violence in the context of two South African high schools. School violence is a stumbling block to proper functioning of South African schools. Leadership is regarded as essential for the success or failure of schools. This study was a multiple case of two schools which was couched within the interpretivist paradigm. This paradigm was suitable because it allowed me to study and understand multiple interpretations which the participants attached to the dynamics of violence and their understanding of how leadership tackled school violence. The study adopted qualitative methods of data generation which included document analysis, observation and interviews. For the interviews, a purposive sampling of the participants was adopted. Informed by distributed leadership theory which is based on the assumption that there are multiple leaders in a school, I selected as participants, the principals, the deputy principals, the Heads of Department, teachers and learners. The study was informed by a three pronged framework involving distributed leadership theory, social learning theory and ecosystemic theory. Distributed leadership theory was used to explain the findings on how leadership practices influence school violence. The dynamics of violence were explained through the lens of social and systemic theories. The findings suggest that school violence is a complex, multi-dimensional and dynamic phenomenon. The insights into the dynamics of violence revealed that teachers and
Green Tea Consumption and Risk of Esophageal Cancer: A Meta-Analysis of Published Epidemiological Studies

We performed a meta-analysis to analyze the association of various levels of green tea consumption with risk of esophageal cancer. We searched MEDLINE, EMBASE, and the Cochrane Library for studies of green tea consumption and esophageal cancer and identified 12 observational studies. For esophageal cancer, the pooled relative risk (RR) was 1.09 [95% confidence interval (CI), 0.76–1.55] for greatest vs. non/least green tea consumption; however, there was significant heterogeneity across studies (P = 0.00, I2 = 75.5%). Compared with subjects who drank no/least green tea, the pooled RR was 1.14 (95% CI = 0.97–1.35) for moderate drinkers, 0.94 (95% CI = 0.77–1.13) for those who drank little, and 0.97 (95% CI = 0.77–1.22) for all subjects who had ever drunk green tea. Subgroup analysis showed that the RR was 0.46 (95% CI = 0.29–0.73) for female subjects. The results of the present meta-analysis are that any association between green tea and risk of esophageal cancer remains unclear. Subgroup analyses indicated that greater consumption of green tea might reduce the risk of esophageal cancer in female subjects. However, the results are based on limited research. Further research is needed to confirm the results and clarify the likely biological mechanisms.
Technological change, economic growth, and income inequality : MSA evidence from the 1990s.

TECHNOLOGICAL CHANGE, ECONOMIC GROWTH, AND INCOME INEQUALITY: MSA EVIDENCE FROM THE 1990s Thomas Eric Lehman August 2004 Employing a two-stage least-squares multiple regression technique using crosssectional data from metropolitan statistical areas (MSAs) as the unit of analysis, this study is designed to detect the indirect effect of skill-biased technological change (SBTC) on household income inequality through changes in the rate of per capita economic growth over the decade of the 1990s. Ifrecent technological changes are skill-biased and tend to raise inequality, as much previous research has suggested, and if such technological changes are a relatively large determinant of economic ! "Yfowth, then we should be able to observe a positive association between technology-driven economic growth and income inequality, all else constant. However, the data and method employed here could not establish support for this hypothesis. Instead, the measures of technological change employed in this study are found to raise per capita economic growth, but economic growth is found to decrease, not increase, household income inequality. In a related vein, this research study seeks to test the theory of an extended or reformulated Kuznets Curve Hypothesis in which economic growth and income inequality might be positively correlated due to structural changes in advanced post-
Delayed cell death and bystander effects in the progeny of Chinook Salmon Embryo cells exposed to radiation and a range of aquatic pollutants

Purpose: To determine whether delayed and bystander effects can be seen in both a non malignant teleost fish cell line, (CHSE) and a malignant teleost fish cell line (EPC) when exposed to low doses of ionising radiation and genotoxic pollutants. Methods: Teleost fish cells were briefly exposed to radiation and chemical toxins at low doses. Clonogenic survival was measured in the exposed population and the distant progeny of exposed cells to assess early and delayed cell death. Clonogenic survival was also measured in cultures, which received medium from briefly exposed cells to determine bystander effects. Results: The dose response pattern for both early and delayed cell death was found to differ for different stressors. Different mechanisms of cell death appear to be involved in the early cytotoxic effect and the delayed effect. No delayed cell death occurred in a transformed fish cell line (EPC). Bystander effects occurred in CHSE cells and were similar in intensity to previously reported mammalian cell bystander effects. Conclusions: The results may have implications for radiation and environmental protection of biota. They demonstrate that damage caused by low doses of radiation and common aquatic pollutants is not only similar but occurs in both acute and delayed forms.
A Unified Three-Phase Power-Flow Analysis Model For Electronically Coupled Distributed Energy Resources

This paper develops and presents a unified and generic three-phase, steady-state, fundamental-frequency, sequence-frame-based model of the voltage-sourced converter (VSC) for power-flow analysis of VSC-interfaced Distributed Energy Resource (DER) units. The model is unified since it represents: 1) three-wire and four-wire VSC configurations; 2) balanced and unbalanced power-flow scenarios; 3) various VSC control strategies and options; and 4) operating limits and constraints of the VSC and its host DER unit. Based on the developed model, a new power-flow algorithm in the sequence-component frame is also developed. To achieve numerical and computational efficiency, the interface-VSC operating limits are accommodated in the power-flow algorithm as an interleaved step. The accuracy of the developed model and the computational efficiency of the power-flow algorithm are demonstrated based on several case studies, and where applicable, the results are validated based on comparison with the exact time-domain solution, using the PSCAD/EMTDC software tool.