Miracle-dz/UniFAR-FTUs huggingface dataset:
Geodesic flows on semidirect-product Lie groups: geometry of singular measure-valued solutions

The EPDiff equation (or the dispersionless Camassa–Holm equation in one dimension) is a well-known example of geodesic motion on the Diff group of smooth invertible maps (diffeomorphisms). Its recent two-component extension governs geodesic motion on the semidirect product DiffⓈ, where denotes the space of scalar functions. This paper generalizes the second construction to consider geodesic motion on DiffⓈ, where denotes the space of scalar functions that take values on a certain Lie algebra (e.g. =⊗(3)). Measure-valued delta-like solutions are shown to be momentum maps possessing a dual pair structure, thereby extending previous results for the EPDiff equation. The collective Hamiltonians are shown to fit into the Kaluza–Klein theory of particles in a Yang–Mills field and these formulations are shown to apply also at the continuum partial differential equation level. In the continuum description, the Kaluza–Klein approach produces the Kelvin circulation theorem.
Mott-Hubbard transition of cold atoms in optical lattices

We discuss the superfluid (SF) to Mott-insulator transition of cold atoms in optical lattices recently observed by Greiner et al (2002 Nature 415 39). The fundamental properties of both phases and their experimental signatures ar ed iscussed carefully, including the limitations of the standard Gutzwiller approximation. It is shown that in a one-dimensional dilute Bose-gas with a strong transverse confinement (Tonks-gas), even an arbitrary weak optical lattice is able to induce a Mott-like state with crystalline order, provided the dimensionless interactio np arameter is larger than a critical value of order one. The SF–insulator transition of the Bose–Hubbard model in this case continuously evolves into a transition of the commensurate–incommensurate type with decreasing strength of the external optical lattice.
Comparison of granules features for pedestrian detection

Pedestrian detection is an important part of intelligent transportation systems. In the literature, Histogram of Oriented Gradients (HOG) detector for pedestrian detection is known for its good performance, but there are still some false detections appearing in the cases with flat area or clustered background. To deal with these problems, in this research work we develop a new feature which is based on pairing comparison computations, called Comparison of Granules (CoG). The idea of CoG is to encode the textural information of local area describing how different the pixel intensities are distributed within a region. It is shown that the special characteristics of CoG feature are “small” and “efficiency” relative to HOG. By incorporating this new feature, we propose a HOG-CoG detector which through our validation experiment achieves 38% log-average miss rate in full image evaluation and 90% detection rate at 10-4 false positives per window on INRIA Person Dataset. Another contribution of this work is that, we also present a training scheme that can be applied on huge database for training a detector. Such training scheme can reduce the number of hard samples during bootstrap training.
New physical model for lifetime estimation of power modules

In this paper a physical model for lifetime estimation of standard power modules is proposed. The lifetime prediction is based on the assumption that the solder interconnections are the weakest part of the module assembly and that the failure cause is the inelastic deformation energy accumulated within the solder material. Unlike the well-known Coffin-Manson model, the proposed model can be used to physically explain the dependency of lifetime on the various properties of a temperature profile i.e. frequency, dwell-ramp time, minimum/maximum temperature. The model is based on Clech's algorithm for simulation of stress-strain solder response under cyclical thermal loading and on the solder deformation mechanism map used to define the dominant failure mechanism under observed stress-temperature conditions. Either accelerated cycling tests or existing field databases are needed to parameterize the model. To verify the approach, the results of power cycling tests for a high power IGBT module found in literature are applied and the impacts of two mission profiles on the module lifetime are examined.
Human–Animal Interaction Research in School Settings: Current Knowledge and Future Directions

The involvement of animals is almost commonplace in many schools, although actual data documenting the extent and nature of human–animal interaction (HAI) in these settings are sparse. We provide an overview of the existing research and argue that the inclusion of animals in classroom settings can have an indirect effect on learning by directly affecting motivation, engagement, self-regulation, and human social interaction through those activities in which the interaction with animals is embedded. We support this theory with examples from the growing body of work indicating that, under specific conditions, with proper safeguards, HAI activities can benefit both typically developing children and those with developmental disabilities by reducing stress and anxiety and improving social interactions and by enhancing motivation, engagement, and learning. Nonetheless, a more comprehensive evidence base is needed to support this theory and to inform policies and practices for HAI in education settings, activities, and interventions.
SL-R Distributed Localization Algorithm for Wireless Sensor Networks

Localization is one of the supporting technologies in wireless sensor networks. In this paper, a novel SL-R distributed algorithm is formally described, designed, implemented and evaluated. The algorithm includes two stages. In first stage, sampling is carrying out based on received anchor information and the initial position estimate of sensor node comes into being. In second stage, the initial node position is refined. The performance of SL-R algorithm is evaluated from different aspect. Simulation results show SL-R algorithm is convergent under a few refinement times and achieves high localization accuracy in low sample size threshold. It also gets high localization coverage when anchor ratio is less. Comparing with similar methods, SL-R obtains higher localization accuracy.
Fairness and Coordination Failures in Supply Chain Contracts

Channel coordination using contracts is a topic that commanded a great deal of attention in the supply chain management literature. Several recent studies that tested the performance of coordinating contracts in the laboratory found that they fail to coordinate channels, and a major reason for this failure is that a signiﬁcant proportion of oﬀers are rejected. Our study extends the body of research on channel coordination by developing a new model based on fairness and bounded rationality, that aims to explain rejections. When fairness considerations are private information, we derive an optimal contract and characterize conditions in which this optimal contract implies rejections. Thus, our major ﬁnding is that when fairness considerations are private information, they may lead to rejections even when agents are fully rational.
Minireview Mdm 2 : The Ups and Downs

Mdm2 was first described 12 years ago. Interest in this oncogene has risen since its identification as a protein that binds and efficiently inactivates the p53 tumor suppressor protein. This interest was further boosted by the discovery that the mdm2 gene is actually a target for direct transcriptional activation by p53, thus defining an autoregulatory feedback loop for the intracellular modulation of p53 function. Subsequent work has revealed that the Mdm2 protein is engaged in a complex network of regulatory interactions. In addition to p53, these involve several other interesting protein partners, including critical cell cycle regulators such as pRb, E2Fl/DP1, and p19ARF. Through these interactions, Mdm2 now appears to exert a host of effects on cell cycle, apoptosis, and neoplastic transformation. Several recent excellent reviews offer a detailed discussion of the Mdm2 protein and its various functions (1-3). In the present minireview, we will attempt to highlight some exciting new insights into Mdm2, its biochemistry, and its biology.
Perioperative docetaxel, cisplatin, and 5-fluorouracil (DCF) for locally advanced esophageal and gastric adenocarcinoma: a multicenter phase II trial.

BACKGROUND Although perioperative chemotherapy for esophagogastric adenocarcinoma (ADC) improves survival, the overall poor prognosis suggests that further refinement of treatment is required. Docetaxel, cisplatin, and 5-fluorouracil (5-FU) (DCF) is effective for metastatic ADC of the upper gastrointestinal (GI) tract; we thus sought to investigate the efficacy of this regimen in patients with resectable disease. PATIENTS AND METHODS Patients with resectable ADC of the upper GI tract received DCF [docetaxel (Taxotere) 75 mg/m(2) I.V. day 1, cisplatin 75 mg/m(2) I.V. day 1, 5-FU 750 mg/m(2) continuous infusion for 120 h, every 3 weeks] for three cycles before and after resection. Primary end point was complete resection; secondary end points were response, toxicity, surgical morbidity, and overall survival. RESULTS Forty-three patients with ADC of the esophagus (11), gastroesophageal junction (25), or stomach (7) started treatment and 86% completed all preoperative cycles with grade 3-4 toxicity arising in 47%. Metabolic response to chemotherapy (reduction in maximal standard uptake value >35%) was achieved in 25/33 (76%) patients. Surgery was carried out in 41/43 and complete resection was achieved in all 41 patients with pathologic complete response in 4/41. Postoperative chemotherapy was started in 29 patients and completed in 24. Three-year overall survival was 60%. CONCLUSION Perioperative DCF is a tolerable and highly effective regimen for the treatment of esophagogastric ADC.
CONCEPTUALIZATION OF ELECTRONIC GOVERNMENT ADOPTION

E-government facilitates provision of relevant government information in electronic form to the citizens in a timely manner and better service delivery to citizens. Information Technology today is recognized as an effective tool for turning the economic activity in efficient governance and in developing human resource. E-government is a kind of governmental administration which is based on ICT Services. The essence of egovernment is using information technology to break the boundary of administrative organizations, and build up a virtual electronic government. E-government initiatives are common in most countries as they promise a transparent, citizen-centric government and reduce operational cost. Emerging with Egovernment, theories and practices of public administration have stepped into a new knowledge era. Egovernment presents a tremendous impetus to move forward with higher quality, cost-effective, government services and a better relationship between citizens and government. This paper discusses the different issues, challenges, adoption factors for e-government implementation, conceptual demarcation on these factors and, presents a conceptual framework for better e-government performance.
iWorlds: Building Mixed Reality Intelligent Environments Using Customisable 3D Virtual Worlds

This paper summarises our research into creating mixed reality intelligent environments, specifically focussing on the quality and realism of the virtual components. We start with a description of the benefits of using virtual worlds as tools for intelligent environment research, highlighting the various categories of virtual world used by recent projects. We then provide a strategy for creating a high-detail three-dimensional world, to use as the virtual component of a mixed reality intelligent environment, resolving restrictive issues such as cost and experience in programming detailed graphics. Finally, we discuss the potential benefits of incorporating technologies from online computer games into the simulations.
Carcinoma and in Normal Gastric Tissue Blood Group Antigens in Human Gastricxand Sialyl-Lewis , a , Sialyl-Lewisy , Lewisx , Lewisb , LewisaExpression of Lewis Updated

A panel of 6 mouse monoclonal antibodies detecting blood group antigens of the Lewis systems and their sialylated derivatives have been used to define the immunoanatomic distribution of these antigenic struc tures within the normal human gastric mucosa and in gastric cancer tissues. The reagents employed detect the following blood group specific ities: Lewis', Lewisb, Lewis", Lewis', sialylated Lewis', and sialylated Lewis". We have analyzed the presence of these antigens in histologically normal gastric mucosa and in gastric carcinoma from 61 patients by the immunoperoxidase method. In addition, we simultaneously examined the blood group and secretor status in 31 of the 61 individuals studied. Immunohistochemical analysis revealed that these antigenic systems are differentially expressed in cell types and cell layers of the normal gastric epithelium. Major differences were observed in surface epithelia and in deep glands including Brenner's gland of the gastroduodenal junction, mainly in the pronounced expression of Lewis* and Lewis1' antigens in the former and the expression of Lewis" and I . CMis' in the latter. In secretor individuals, Lewisb was the dominant antigen in the surface epithelium, and in nonsecretors, Lewis' was observed in the surface epithelium. Lewis" and Lewis' were both detected in the deep glands and in Brenner's glands regardless of the secretor status. The expression of sialylated derivatives in normal gastric tissues was consid erably reduced but was consistent with the expression of their precursors in normal gastric epithelium. In gastric cancers, more pronounced expression of Lewis* and sialyl ated Lewis* was observed in secretor individuals and acted as a tumorassociated antigen. Comparison of the plasma level of sialylated Lewis* and its tissue expression demonstrated that the shedding of the antigen into interstitial stroma correlated with the detection of the antigen in serum. These studies confirmed the importance of blood group antigens as normal differentiation antigens. Examination of secretor status clarified the mechanism of Lewis*and Lewisbantigen expression in gastric surface epithelium. Alterations in the expression of these antigens and an increase of sialylated derivatives in gastric cancers demonstrated that these blood group antigens are useful tools for the analysis of histogenesis and organogÃ©nesis in the stomach and its neoplastic and nonneoplastic dis eases.
The effects of leadership styles and sociability trait emotional intelligence on employee engagement A study in Binh Duong City, Vietnam

The purpose of this study is to empirically investigate the effect of leadership styles on employee engagement in Binh Duong City. In addition, the effect of employee sociability on employee engagement and its mediation were also examined. Quantitative approach was the major method used, with statistical techniques applied, including factor, multiple regression, and path analyses. The unit of analysis was at individual level with the sample size of 269 office employees of five dominant industries in Binh Duong. The findings of this study indicated that the higher levels of employee sociability, ethical leadership and visionary were positively associated with the higher level of the employee engagement. In contrast, the transactional leadership style had negatively correlated with the employee engagement. Besides that, this study also found that ethical leadership and visionary leadership positively affected employee sociability. Based on the results of the data analysis, this research recommended that in order to enhance engagement of employee, companies should apply visionary leadership and ethical leadership, avoid or limit using transactional leadership styles. Companies should also select employee who are high sociability in order to have higher level of employee engagement.
Influence of Impulse Rate on the QAM Error Probability in a Non-Gaussian Noise Environment

noise modeled as a combination of a white Gaussian process and a filtered Poisson process of which the envelope amplitude obeys the Rayleigh distribution. The error probability for M-QAM systems is shown to be strongly dependent not only on the signal to noise ratio SNR, but also on the average number of impulses in the detection interval γ (hereafter referred to as impulse rate), and the impulse noise power to Gaussian noise power ratio β. Numerical results show that the worst case symbol error probability varies linearly with γ when the noise is purely impulsive, and almost linearly with β when the noise is non-Gaussian over a large range of values of β. In the latter case, this linear variation is limited by the two extremities, the left is characterized by the impulse noise and the right by the Gaussian noise.
CAS Wavelets for Solving General Two- Dimensional Partial Differential Equations of Higher Order with Application

In this paper, numerical techniques based on the CAS wavelets method is proposed of the numerical solution for two-dimensional partial differential equations of higher order. We derived the general formula for n of integrals to CAS wavelets analytically which called the operational matrix of integration, and we derived general formulas for solving two-dimensional partial differential equations of higher order using two and three-dimensional CAS wavelets method. From application these formulas to solve two-dimensional non-linear coupled Benjamin-Bona-Mahony system, we gained the numerical stability even when the step size used was large, still the results were satisfactory, and the accuracy of the obtained solutions is quite high even if the number of calculation points is small, by increasing the number of collocation points; the error of the solution rapidly decreases. b n t a a t k k n k    
Image Splicing Detection Using Illuminant Color Inconsistency

Splicing operation may introduce inconsistencies in many features. In the proposed method illuminant color inconsistency is used to detect image splicing. A given color image is divided into many overlapping blocks. Then a classifier is used to adaptively select illuminant estimation algorithm based on block content. Illuminant color is estimated on each block, and the difference between the estimation and reference illuminant color is measured. If the difference is larger than a threshold, the corresponding block is labeled as spliced block. Experiments show effectiveness of the method.
A conceptual framework of stress vulnerability, depression, and health outcomes in women: potential uses in research on complementary therapies for depression

Depression is a chronic mental health condition that affects millions of individuals worldwide. It is well‐established that psychological stress plays an integral role in depression and that depression has numerous negative health outcomes. However, a closer look at components of stress vulnerabilities and depression is required to allow for the development and testing of appropriate interventions.
High voltage pulsed current stimulation of the sciatic nerve in rats: analysis by the SFI

Objective To analyze the efficiency of high voltage pulsed current (HVPC) with early application in three different sites, in the regeneration of the sciatic nerve in rats submitted to crush injury, the sciatic functional index (SFI) was used to assess the functional recovery. Methods After crushing of the nerve, 57 animals were submitted to cathodal HVPC at frequency of 50Hz and voltage of 100V, 20 minutes per day, 5 days per week. The rats were divided into five groups: control group; ganglion group; ganglion + muscle group; muscle group; and sham group. The SFI was determined weekly for seven weeks, from the preoperative period to the 6th postoperative week. Results Compared with the control group, the results showed a significantly better performance of group 2 for the first 3 weeks; group 3 showed significantly better performance in the third week; and group 4 showed a significantly negative performance during the 4th and 6th weeks. Conclusion Early application of HVPC had a positive effect in the treatment of the spinal cord region and the sciatic nerve root ganglion with a dispersive electrode on the contralateral lumbar region or on the gastrocnemius. However, HVPC had a negative effect in the treatment with an active electrode on the gastrocnemius and a dispersive electrode on the contralateral thigh. Level of evidence II, Prospective comparative study.
The Ultimate Undecidability Result for the Halpern-Shoham Logic

The Halpern-Shoham logic is a modal logic of time intervals. Some effort has been put in last ten years to classify fragments of this beautiful logic with respect to decidability of its satisfiability problem. We complete this classification by showing - what we believe is quite an unexpected result - that the logic of subintervals, the fragment of the Halpern -- Shoham logic where only the operator ``during'', or D, is allowed, is undecidable over discrete structures. This is surprising as this, apparently very simple, logic is decidable over dense orders and its reflexive variant is known to be decidable over discrete structures. Our result subsumes a lot of previous negative results for the discrete case, like the undecidability for ABE, BD, ADB, and so on [2], [5].
Music Composition Using a Real-Time MRI Biofeedback System Interactive

 Frederick Bianchi of Worcester Polytechnic Institute for his assistance, guidance and advising in this project.  Karl Helmer of Medical School in Harvard University for providing help and guidance in this study. Abstract The goal of this project was to describe a real time music composition through an fMRI based-biofeedback system that monitors the activity in the medial prefrontal cortex (MPFC) of the brain. Based on creativity and neuroscience research, it is suggested that increased MPFC activity is closely associated with creativity in jazz improvisation. [51] .
Part Orientation with One or Two Stable Equilibria Using Programmable Vector Fields

Programmable vector elds are an abstraction to represent a new class of devices for distributed, non-prehensile manipulation for applications in parts feeding, sorting, positioning, and assembly. Unlike robot grippers, conveyor belts, or vibratory bowl feeders, these devices generate force vector elds in which the parts move until they may reach a stable equilibrium pose. Recent research in the theory of programmable force elds has yielded open-loop strategies to uniquely position, orient, and sort parts. These strategies typically consist of several elds that have to be employed in sequence to achieve a desired nal pose. The length of the sequence depends on the complexity of the part. In this paper, we show that unique part poses can be achieved with just one eld. First, we exhibit a single eld that positions and orients any laminar part (with the exception of certain symmetric parts) into two stable equilibrium poses. Then we show that for any laminar part there exists a eld in which the part reaches a unique stable equilibrium pose (again with the exception of symmetric parts). Our second result leads to the design of \universal parts feeders", proving an earlier conjecture about their existence. We argue that universal parts feeders are relatively easy to build.