Miracle-dz/UniFAR-FTUs huggingface dataset:
Laser-guided atoms in hollow-core optical fibers.

We have used optical forces to guide atoms through hollow-core optical fibers. Laser light is launched into the hollow region of a glass capillary fiber and guided by grazing-incidence reflection from the walls. When the laser is detuned 1 —30 GHz red of the Rb D2 resonance lines, dipole forces attract atoms to the high-intensity region along the axis and guide them through the fiber. We show that atoms may be guided around bends in the fiber and that in initial experiments the atoms experience up to 18 reflections from the potential walls with minimal loss.
Progression of cerebral white matter hyperintensities on MRI is related to diastolic blood pressure

White matter hyperintensities (WMH) on MRI are a frequent finding on brain imaging in elderly people. It is well established that the most important risk factors for the presence of these lesions are age and arterial hypertension.1 Little is known about the progression of these lesions, as all studies except one2 have been cross-sectional in design. Therefore, we assessed whether WMH progress over time and whether the progression is associated with blood pressure (BP) levels. The study was part of a large population study among 3974 inhabitants of Amsterdam described elsewhere.3 From this baseline cohort, 787 subjects, randomly selected by strata of age and Mini-Mental State Examination (MMSE) results, were invited to participate in a follow-up study of cognitive function; 511 (65%) agreed to participate. For the MRI study, we randomly selected from the 511 subjects a subsample with a range of cognitive functions that included clinically normal and mildly to moderately demented responders, described earlier,4 of whom 59 subjects agreed to participate in the MRI study. Those who did not participate in the MRI study did not differ in age, educational level, or sex from those who participated. All subjects were asked to return each year for a follow-up MRI investigation. After 2 …
Measurement of RF impedance for automotive 18650 cylindrical lithium ion cells

The impedance of sample 18650 format cylindrical lithium ion battery cells has been measured over the frequency range from 100 kHz to 200 MHz using a vector network analyser. The results indicate that these cells exhibit a small resistance and inductive reactance, both reaching around 2 Ω at 200 MHz, which do not vary significantly when generating a DC current.
Dose-Dependency of Resveratrol in Providing Health Benefits

This review describes the dose-dependent health benefits of resveratrol, a polyphenolic antioxidant that is found in a variety of foods, especially grape skin and red wine. Resveratrol provides diverse health benefits including cardioprotection, inhibition of low-density lipoprotein, activation of nitric oxide (NO) production, hindering of platelet aggregation [32] A.A. E. Bertelli, D.E. Giovannini, R.L. Caterina, W. Bernini, M. Migliori and M. Fregoni et al., Antiplatelet activity of cis-resveratrol, Drugs Exp Clin Res 22 (1996), pp. 61–63. View Record in Scopus | Cited By in Scopus (111) and promotion of antiinflammatory effects. Studies have shown that at a lower dose, resveratrol acts as an anti-apoptotic agent, providing cardioprotection as evidenced by increased expression in cell survival proteins, improved post-ischemic ventricular recovery and reduction of myocardial infarct size and cardiomyocyte apoptosis and maintains a stable redox environment compared to control. At higher dose, resveratrol acts as a pro-apoptotic compound, inducing apoptosis in cancer cells by exerting a death signal. At higher doses, resveratrol depresses cardiac function, elevates levels of apoptotic protein expressions, results in an unstable redox environment, increases myocardial infarct size and number of apoptotic cells. At high dose, resveratrol not only hinders tumor growth but also inhibits the synthesis of RNA, DNA and protein, causes structural chromosome aberrations, chromatin breaks, chromatin exchanges, weak aneuploidy, higher S-phase arrest, blocks cell proliferation, decreases wound healing, endothelial cell growth by fibroblast growth factor-2 (FGF-2) and vascular endothelial growth factor, and angiogenesis in healthy tissue cells leading to cell death. Thus, at lower dose, resveratrol can be very useful in maintaining the human health whereas at higher dose, resveratrol has pro-apoptotic actions on healthy cells, but can kill tumor cells.
Accessing resources for service innovation – the critical role of network relationships

Purpose – This paper aims to explore how companies access resources through network relationships when developing service innovations. The paper identifies the types of resource that companies seek from other actors and examines the nature of relationships and resource access strategies that can be applied to access each type of resource. Design/methodology/approach – A longitudinal, multi-case study is conducted in the field of technical business-to-business (b-to-b) services. An abductive research strategy is applied to create a new theoretical understanding of resource access. Findings – Companies seek a range of resources through different types of network relationships for service innovation. Four types of resource access strategies were identified: absorption, acquisition, sharing, and co-creation. The findings show how easily transferable resources can be accessed through weak relationships and low-intensity collaboration. Access to resources that are difficult to transfer, instead, necessitates st.
The actions of presynaptic snake toxins on membrane currents of mouse motor nerve terminals.

1. The m. triangularis sterni of the mouse was used to investigate the actions of dendrotoxin, beta‐bungarotoxin, crotoxin, taipoxin, bee venom phospholipase A2, aprotinin and apamin on presynaptic currents which flow inside the perineural sheath of nerve bundles upon nerve stimulation. 2. Neither the fast K+ current (IK,f) nor the Ca2+‐dependent K+ current IK(Ca) (unmasked after blockade of IK,f by 3,4‐diaminopyridine) was affected by the neurotoxins and drugs mentioned. 3. Inhibition of both IK,f and IK(Ca) by tetraethylammonium (30 mM) prolonged presynaptic depolarization owing to Ca2+ influx through fast and slow Ca2+ channels. Additional application of dendrotoxin, beta‐bungarotoxin, crotoxin or taipoxin in the nanomolar range caused further prolongation of Ca2+ influx, presumably due to blockade of slowly activating K+ current (IK,s). Onset of toxin effects was immediate and could not be reversed by washing for 60 min. 4. Similar prolongation of slow Ca2+ current was effected by 3,4‐diaminopyridine, whereas addition of apamin, aprotinin or phospholipase A2 left the signals unchanged. 5. These data indicate that facilitatory actions of dendrotoxin, beta‐bungarotoxin, taipoxin and crotoxin are mediated by an increase of Ca2+ entry into nerve terminals. The actions of these toxins are discussed in terms of a blockade of presynaptic K+ channels with slow activation kinetics.
Intermediation and the Nature of Trade Costs: Theory and Evidence ∗

In this paper we use a new data set of matched importer-exporter transactions for Chile and Colombia to document basic characteristics of the ways that trade is intermediated. We find that, in virtually every Chilean exporter-Colombian importer pair, at least one of the parties is a large international trader. Also, more than half of the Chilean exporters sell to only 1 Colombian importer. These exporters sell smaller amounts and fewer HS codes to Colombia and to the world but sell large amounts and more HS codes per importer. Also, they sell to importers that purchase larger amounts and more HS codes. Based on these characteristics, we develop a model of trade in which firms have access to multiple distribution technologies and choose a mode of distribution as part of the equilibrium. We show that a twodistribution technology model can capture the basic features of the data. Using this model, we explore the ways that changes in the trading environment, including trade reforms, impact trade costs and trading activity. Finally, we provide evidence in support of the model’s predictions.
Distinct preoptic‐BST nuclei dissociate paternal and infanticidal behavior in mice

Paternal behavior is not innate but arises through social experience. After mating and becoming fathers, male mice change their behavior toward pups from infanticide to paternal care. However, the precise brain areas and circuit mechanisms connecting these social behaviors are largely unknown. Here we demonstrated that the c‐Fos expression pattern in the four nuclei of the preoptic‐bed nuclei of stria terminalis (BST) region could robustly discriminate five kinds of previous social behavior of male mice (parenting, infanticide, mating, inter‐male aggression, solitary control). Specifically, neuronal activation in the central part of the medial preoptic area (cMPOA) and rhomboid nucleus of the BST (BSTrh) retroactively detected paternal and infanticidal motivation with more than 95% accuracy. Moreover, cMPOA lesions switched behavior in fathers from paternal to infanticidal, while BSTrh lesions inhibited infanticide in virgin males. The projections from cMPOA to BSTrh were largely GABAergic. Optogenetic or pharmacogenetic activation of cMPOA attenuated infanticide in virgin males. Taken together, this study identifies the preoptic‐BST nuclei underlying social motivations in male mice and reveals unexpected complexity in the circuit connecting these nuclei.
Evaluating Service Quality of Korean Restaurants: A Fuzzy Analytic Hierarchy Approach

Every service firm must find ways to attract new customers, retain existing customers, and remain competitive and profitable. As competition increases, delivering better service becomes more important. Service quality is considered as a vital aspect for the success of the firms. Restaurant cannot be separated from the service quality they have to deliver. The development of restaurant is supported with the reputation of the country where the food comes from. Recently, one of the most trending topic is Korean wave which affects the Korean cuisine. A fuzzy AHP was employed to evaluate the service quality. It is more preferable than traditional AHP which is criticized for its inability to handle the uncertainty of the decision maker’s perception. Six attributes are used to evaluate five Korean restaurants in Semarang, Indonesia. The result shows that innovation is the most important attribute. It seems that decision makers viewed the food variation and new method service as main factors that the restaurants have to manage. This finding can provide the managers with valuable insights into the attribute that reflects customers’ perceptions; also to position their service based on their competitors. Validating the scale in other culture-based restaurants is an interesting area to be pursued.
A Software Framework for Data Provenance

Data provenance refers to the historical record of the derivation of the data, allowing the reproduction of experiments, interpretation of results and identification of problems through the analysis of the processes that originated the data. Data provenance contributes to the evaluation of experiments. This paper presents a framework for data provenance using the W3C provenance data model, called PROV-DM. Such framework aims at contributing to, and facilitating, the collection, storage and retrieval of provenance data through a modeling and storage layer based on PROV-DM, yet is compatible with other representations of PROV such as PROV-O. To demonstrate the utilization of the framework, it was used in an IoT application that performs the gas classification to identify diseases. KeywordsData Provenance; PROV Framework; PROV W3C.
Ten‐year computerized audit of infection after abdominal surgery

A prospective audit of the frequency of infective complications after all abdominal operations was carried out between January 1977 and December 1986. A total of 3100 abdominal procedures (2041 elective; 1059 emergency) were performed in 3056 patients. There were 50 (1.6 per cent) in‐hospital and 66 (2.1 per cent) late wound infections (overall 3.7 per cent). Fifty‐four (1.8 per cent) patients developed postoperative intraperitoneal sepsis. Ninety‐eight patients died (overall mortality 3.2 per cent) and introperitoneal sepsis was a related factor in twelve (0.4 per cent). Wound infection, peritoneal sepsis and mortality were related to the degree of operative contamination and to reoperation. The results support the traditional, although sometimes inadequately stressed, teaching that technique is an important factor in preventing infection. Infection is also reduced by peroperative antibiotic lavage. The limited value and the potential difficulties of the unstructured introduction of computerized audit should be recognized.
Trust and reputation in multiagent systems: strategies and dynamics with reference to electronic commerce

In multiagent interactions, such as e-commerce and peer-to-peer file sharing, being able to accurately assess the trustworthiness of other agents is important for agents to protect themselves from losing utility. We focus on an agent’s discount factor (time preference of utility) as a direct measure of the agent’s trustworthiness in a number of settings. We prove that an agent’s discount factor, when in context of the agent’s valuations and capabilities, is isomorphic to its trustworthiness for a set of reasonably general assumptions and definitions. Further, we propose a general list of desiderata for trust systems and show how discount factors as trustworthiness meet these desiderata. We also show how discount factors are a robust measure of trustworthiness when entering commitments with adverse selection and moral hazards. When agents can significantly increase each other’s utility at a moderate cost, the socially optimal outcome is for the agents to provide favors to each other. However, when agents cannot support or enforce a market system, the favor environment forms a situation similar to the repeated prisoner’s dilemma because each agent can unilaterally improve its utility by refusing to help others. We present an adaptive tit-for-tat strategy that provides a mutually beneficial equilibrium when agents may have differing private discount factors and when favor costs and benefits are stochastic and asymmetric. This strategy enables agents to treat previously unencountered agents with caution, communicate about the trustworthiness of other agents, and evaluate past communication for deception. We discuss the details of our simulation results and the impact of various parameterizations and communication. Building from the favor model, we examine more complex transactions with private discount factors as a model for trustworthiness. We closely examine the case of simultaneous favors, which comprise a single market transaction where two parties perform an exchange. Further, we investigate more complex market models, where agents directly compete on price and quality. We derive a number of methods that agents can use to obtain and aggregate information of other agents’ discount factors and valuations. Despite the large body of work in reputation and trust in dynamic multiagent environments, no metrics exist to directly and quantitatively evaluate and compare reputation systems. We present a common conceptual interface for reputation systems and a set of four measurable desiderata, inspired by dynamical systems theory, that are broadly applicable across multiple domains. We discuss the implications, strengths, and limitations of our desiderata. Our discount factor as trustworthiness model performs well across the desiderata when measured against other established reputation models from the literature. We apply our desiderata to empirically evaluate the Amazon reputation mechanism in terms of actual ratings data obtained by sellers on Amazon’s marketplace.
Greens function decomposition for a new rewriting of inverse scattering equations

In this paper, a new inversion model for 2D microwave imaging is introduced by means of a convenient rewriting of the usual Lippmann Schwinger integral scattering equation. Such model is derived by decomposing the Greens function and the corresponding internal radiation operator in two different contributions. In fact, one of them can be easily computed from the collected scattered data. In case of lossless backgrounds, the resulting model turns out to be more convenient than the traditional one, as it exhibits a lower degree of nonlinearity with respect to parameters embedding the unknown dielectric characteristics. This interesting property suggests its exploitation in the solution of the inverse scattering problem. The achievable performances are tested by comparing the proposed model with the usual one based on the Lippman-Schwinger equation in both cases of linearly approximated and full non-linear frameworks. Both numerical and experimental data are considered.
The production and marketing of organic wine in Sicily

This paper aims at a better knowledge of the organic wine sector in Sicily. In the last few years regulations 2078/92 and 2092/91 have had a wide diffusion in the agricultural regional context; a rapid increase of areas and farms justify the attention paid by the European union policies. Two aspects of the sector have been examined: the influence on the implementation of Reg. 2078/92 with regard to diffusion of the organic wine sector in Sicily; and a group of farms in the west of Sicily have been analysed to verify the scenario of organic wine, and the strategy used in the commercialization of organic production. The results show a very interesting framework for organic wine. This is a sector in the process of major expansion, especially with regard to the trade profile, mainly because of increasing demand from markets abroad.
Smile and (Half) the World Smiles with You, Frown and You Frown Alone

The facial expression responses of adults to the display of facial expressions were examined in a variety of public settings to test predictions from a contagion hypothesis, that the display of smiles and frowns results in smiles and frowns, and folk wisdom that the display of a smile will result in a smile but that a frown will not lead to a frown in response. It was also predicted that female subjects would smile more frequently than male subjects and that people would smile at females more than at males. The results supported the folk adage rather than the contagion hypothesis: Over half the subjects responded to a smile with a smile, whereas few subjects responded to a frown with a frown. The predicted effects of subjects' and displayers' gender were also observed. The results were interpreted in the context of internalized norms of reciprocity for brief encounters. The potential for enhanced affect as a result of the contagion of smiles is discussed.
Simultaneous Media Experience and Synesthesia

ABSTRACT The findings demonstrate that simultaneous media usage is a fact, undermining typical media measurements done in isolated environments that neglect the everyday patterns of media users. More importantly, the simultaneous media experience points to the concept of synesthesia as an experiential integrator of differing sensory fields. The experience of simultaneous media foreground/background relationship needs to be incorporated into the media planning and allocation mix if we are to actually address the consumers' media experience with multitasking.
Compactons: Solitons with finite wavelength.

The understand the role of nonlinear dispersion in pattern formation, we introduce and study Korteweg\char21{}de Vries\char21{}like equations wtih nonlinear dispersion: ${\mathit{u}}_{\mathit{t}}$+(${\mathit{u}}^{\mathit{m}}$${)}_{\mathit{x}}$+(${\mathit{u}}^{\mathit{n}}$${)}_{\mathit{x}\mathit{x}\mathit{x}}$=0, m,ng1. The solitary wave solutions of these equations have remarkable properties: They collide elastically, but unlike the Korteweg\char21{}de Vries (m=2, n=1) solitons, they have compact support. When two ``compactons'' collide, the interaction site is marked by the birth of low-amplitude compacton-anticompacton pairs. These equations seem to have only a finite number of local conservation laws. Nevertheless, the behavior and the stability of these compactons is very similar to that observed in completely integrable systems.
Self-Efficacy and Multicultural Teacher Education in the United States: The Factors That Influence Who Feels Qualified to be a Multicultural Teacher Educator

A growing body of scholarship in the United States focuses on the “multicultural” dispositions, ideologies, and attitudes that teachers carry from preservice training into classroom practice. However, little attention has been paid to the dispositions, ideologies, and attitudes of multicultural teacher educators—those tasked with preparing teachers to teach multiculturally. This scholarly gap limits understandings of how and by whom this preparation is happening. The purpose of this study, drawing on scholarship about the role of efficacy in educational environments, was to fill part of that void by examining the experiences by which multicultural teacher educators in the United States come to feel qualified to teach multicultural teacher education courses. Results suggested higher efficacy among White and “other race” participants than African American participants and higher efficacy among heterosexual participants than their lesbian, gay, bisexual, or questioning counterparts. No significant differences across gender or other identities were found. Similarly, no correlation was found between participation in professional conferences, other professional development opportunities, or participation in professional associations and level of efficacy. Implications for the preparation and support of multicultural teacher educators are discussed.
Interdisciplinary ICU Cardiac Arrest Debriefing Improves Survival Outcomes*

Objective:In-hospital cardiac arrest is an important public health problem. High-quality resuscitation improves survival but is difficult to achieve. Our objective is to evaluate the effectiveness of a novel, interdisciplinary, postevent quantitative debriefing program to improve survival outcomes after in-hospital pediatric chest compression events. Design, Setting, and Patients:Single-center prospective interventional study of children who received chest compressions between December 2008 and June 2012 in the ICU. Interventions:Structured, quantitative, audiovisual, interdisciplinary debriefing of chest compression events with front-line providers. Measurements and Main Results:Primary outcome was survival to hospital discharge. Secondary outcomes included survival of event (return of spontaneous circulation for ≥ 20 min) and favorable neurologic outcome. Primary resuscitation quality outcome was a composite variable, termed “excellent cardiopulmonary resuscitation,” prospectively defined as a chest compression depth ≥ 38 mm, rate ≥ 100/min, ⩽ 10% of chest compressions with leaning, and a chest compression fraction > 90% during a given 30-second epoch. Quantitative data were available only for patients who are 8 years old or older. There were 119 chest compression events (60 control and 59 interventional). The intervention was associated with a trend toward improved survival to hospital discharge on both univariate analysis (52% vs 33%, p = 0.054) and after controlling for confounders (adjusted odds ratio, 2.5; 95% CI, 0.91–6.8; p = 0.075), and it significantly increased survival with favorable neurologic outcome on both univariate (50% vs 29%, p = 0.036) and multivariable analyses (adjusted odds ratio, 2.75; 95% CI, 1.01–7.5; p = 0.047). Cardiopulmonary resuscitation epochs for patients who are 8 years old or older during the debriefing period were 5.6 times more likely to meet targets of excellent cardiopulmonary resuscitation (95% CI, 2.9–10.6; p < 0.01). Conclusion:Implementation of an interdisciplinary, postevent quantitative debriefing program was significantly associated with improved cardiopulmonary resuscitation quality and survival with favorable neurologic outcome.