Miracle-dz/UniFAR-FTUs huggingface dataset:
Bounded complexity tree search MMSE detection for MIMO systems using improved channel partition preprocessing

MIMO communication is a core technology for wireless systems. This work presents a fixed complexity scheme based on simplified channel partition and efficient tree based precancellation employing the MMSE criterion. This algorithm is then extended to a variable complexity tree search scheme that provides lower average complexity. The resulting algorithm operates on a very small subset of candidates and employs an improved channel matrix ordering rule in the preprocessing stage that guarantees its high signal-to-noise-ratio (SNR) optimality for space uncorrelated channels. The proposed scheme provides substantial complexity reduction over conventional variable complexity detection schemes.
Discovering Semantic Relationships for Knowledgebase

Discovering the semantic relationships in knowledgebase is critical in information processing and knowledge management. Previous studies of discovering semantic relationships are mainly based on the information extraction using manually annotated training set and predefined semantic relationship patterns. In this paper, we propose a new method to automatically discover the semantic relationships between two concepts in knowledgebase through text classifying and information filtering. The documents related to the two concepts in knowledgebase are at first classified into different taxonomies and the connecting terms capturing the semantic relationships between the two concepts are extracted. The experimental results show that our method has provided an efficient and effective way for the automatic discovering of semantic relationships for information management.
Recovering Registered Geometry and High Dynamic Range Texture with Coded Structured Light

In the last two decades the problem of accurately capturing the geometry of an object was extensively studied, while the acquisition of high-quality textures only in recent years has become subject of research. In most cases, geometry and texture are acquired separately and a registration step has to be carried out to correlate them. In this work we describe the usage of a color coded structured light. The traditional use of color in coding was revised in [Sa02b], and we had shown that, by projecting complementary slides, the reflectivity restrictions on objects can be eliminated. In this paper, by varying exposure between pairs of complementary slides, we are able to recover high dynamic range images and geometry at the same time, already registered to each other.
Creating a Center for Education Statistics: A Time for Action.

At the request of the Office of the Assistant Secretary for Educational Research and Improvement, the Panel to Evaluate the National Center for Education Statistics (NCES) was established in 1985 by the National Academy of Sciences. This report culminates an extensive two-year study of NaS and reflects the panel's broad view of the center's serious problems. The study had four major aspects: (1) to review, describe, and assess existing data quality and quality assurance processes; (2) to review, describe, and assess program content and services and procedures used for establishing priorities consistent with the Congressional mandate; (3) to review and assess the timeliness of data collected and disseminated; and (4) to identify issues hindering NCES in the successfui accomplishment of its mdssion. Tbe panel recognized that the center will require increased funding, but funding requests should be judged agaiust the progress of the center in meeting standards; and reflect the expected expansive of data collection. The panel's comprehensive recommendations addressed the following areas: (1) mission, role, and responsibilities; (2) content and direction of data collection programs; (3) establishing a frame of reference; (4) the advisory council; (5) improving data quality (redesigning the elementary/secondary data programs, reducing errcr, and statistical standards); (6) timeliness; (7) staff and budget resources; (8) contracting out; and (9) publications policy. The panel recommended that serious consideration be given to abolishing the center and finding other means to obtain and disseminate education data if wide-ranaina actions are not undertaken to damage both the image and reality of the center. Appendices include the center's organizational structure and biographical sketches of panel and staff. (UMO) Creating a Center for Education Statistics:
Handoff prioritization and decision schemes in wireless cellular networks: a survey

Handoff is a key element in wireless cellular networks in order to provide quality of service (QoS) to the users and to support users' mobility. Handoff failure will result in the forced termination of an ongoing call. From the user's point of view, the service of a handoff request is more important, as the forced termination of an ongoing call is more annoying than the blocking of new calls. Therefore, in order to support QoS to the users and to provide ubiquitous coverage, the handoff procedure ought to be further investigated. This paper provides a comprehensive survey of the basic elements, the different types and phases of the handoff procedure. Moreover, particular interest has been given in the horizontal handoff execution phase by discussing and classifying the most recent handoff prioritization schemes into categories based on the concepts that these schemes adopt, e.g. channel reservation, handoff queueing, channel transferred, subrating, genetic and hybrid schemes and in the vertical handoff decision phase by presenting different decision algorithms.
Optimal flexibility of a flapping appendage in an inviscid fluid

We present a new formulation of the motion of a flexible body with a vortex-sheet wake and use it to study propulsive forces generated by a flexible body pitched periodically at the leading edge in the small-amplitude regime. We find that the thrust power generated by the body has a series of resonant peaks with respect to rigidity, the highest of which corresponds to a body flexed upwards at the trailing edge in an approximately one-quarter-wavelength mode of deflection. The optimal efficiency approaches 1 as rigidity becomes small and decreases to 30–50% (depending on pitch frequency) as rigidity becomes large. The optimal rigidity for thrust power increases from approximately 60 for large pitching frequency to ∞ for pitching frequency 0.27. Subsequent peaks in response have power-law scalings with respect to rigidity and correspond to higher-wavenumber modes of the body. We derive the power-law scalings by analysing the fin as a damped resonant system. In the limit of small driving frequency, solutions are self-similar at the leading edge. In the limit of large driving frequency, we find that the distribution of resonant rigidities ~k−5, corresponding to fin shapes with wavenumber k. The input power and output power are proportional to rigidity (for small-to-moderate rigidity) and to pitching frequency (for moderate-to-large frequency). We compare these results with the range of rigidity and flapping frequency for the hawkmoth forewing and the bluegill sunfish pectoral fin.
Do Adolescent Idiopathic Scoliosis (AIS) Neglect Proprioceptive Information in Sensory Integration of Postural Control?

Introduction It has been reported that AIS rely much more on ankle proprioception to control the amplitude of the balance control commands as compared to age-matched healthy adolescents. Our hypothesis was that AIS do not neglect proprioceptive information to control posture probably because of their vestibular deficits. We investigated the proprioceptive contribution to postural control in AIS which expresses spinal deformity during a crucial transitional period of ontogenesis. Methods 10 adolescents with idiopathic scoliosis (AIS) with moderate spinal deformity (10° < Cobb Angle >35°) and 10 control adolescents (CA) had to maintain vertical stance while very slow oscillations in the frontal plane (below the detection threshold of the semicircular canal system) were applied to the support with the eyes open and closed. Postural orientation and segmental stabilisation were analysed at head, shoulder, trunk and pelvis levels. Results Scoliosis did not affect vertical orientation control and segmental stabilization strategies. Vision improves postural control in both CA and AIS, which seem more dependent on visual cues than adults. Conclusions AIS as CA were unable to control efficiently their postural orientation on the basis of the proprioceptive cues, the only sensory information available in the EC situation, whereas in the same condition healthy young adults present no difficulty to achieve the postural control. This suggests that AIS as CA transitory neglect proprioceptive information to control their posture. These results and previous studies suggest the existence of different afferent pathways for proprioceptive information subserving different parts in sensory integration of postural control. We conclude that the static proprioceptive system is not affected by the idiopathic scoliosis, while the dynamic proprioceptive system would be mainly affected.
Inhibition of p 34 cdc 2 Kinase Activity by Etoposide or Irradiation as a Mechanism of G 2 Arrest in Chinese Hamster Ovary Cells 1

The mammalian homologue of the yeast cdc2 gene product, p34"*''2,is a cell cycle-regulated protein essential for mitosis. We have used polyclonal antisera raised against a peptide corresponding to the carboxyl terminus of the sequence of human cdc2 to study p34dc2 in Chinese hamster ovary (CHO) cells. Major bands are immunoprecipitated at a molecular weight of 34,000, although not in the presence of competing antigenic peptide. p34"" is coimmunoprecipitated with proteins of mo lecular weights of 52,000 and 57,000. Immunoprecipitates express histone HI kinase activity which varies throughout the cell cycle, maximal activity being observed in G2-M. The activity of the p34cic2 kinase varies according to its association with the M, 52,000 and 57,000 proteins and according to their phosphorylation state. Treatment of either asynchron ous CHO cells or an enriched G2 population with the antitumor agent, etoposide, results in rapid inhibition of immunoprecipitated p34rfc2 kinase activity, which is not due to a direct effect of drug upon the enzyme. p34cdc2kinase activity recovers as cells arrest in G2 and a second etoposide treatment further inhibits p34cdc2kinase activity and prolongs G2 arrest. Exposure of asynchronous CHO cells to 7-irradiation also inhibits p34cdc2 kinase activity within 1 h. Again this activity recovers as cells accumulate in G2. These results suggest that DNA damage in CHO cells elicits a response which results in inhibition of p34cdc2 kinase activity and, con sequently, G2 arrest.
THE CAUSAL INFLUENCES OF INCOME AND CAR OWNERSHIP ON TRIP GENERATION BY MODE

A simultaneous equations model is developed to explain car ownership and trip generation by mode at the household level. The data are from three years of a panel survey conducted in the Netherlands. The variables are household income, treated in three dummy variables to represent four income classes: number of cars; and trips per person by three modes: car, public transport and bicycle. Each equation in the simultaneous system represents the direct effect of one variable upon another, and all variables with the exception of the income variables are endogenous. The principal results are that income effects on car demand are channelled exclusively through car ownership, and that car ownership and car travel explain a significant portion of public transport and bicycle demand. However, there are also direct links from income to public transport and bicycle demand. In particular, public transport trip making is shown to be an increasing function of income, controlling for differences in car ownership. Moreover, higher public transport mobility implies higher car mobility, all other effects equal. Tests of the temporal stability of the causal structure showed that it changed over the years 1984, 1985 and 1986. The income-car ownership relationship is the least temporally stable of all the relationships covered by the model. (Author/TRRL)
Dendritic atrophy constricts functional maps in resonance and impedance properties of hippocampal model neurons

A gradient in the density of hyperpolarization-activated cyclic-nucleotide gated (HCN) channels is necessary for the emergence of several functional maps within hippocampal pyramidal neurons. Here, we systematically analyzed the impact of dendritic atrophy on nine such functional maps, related to input resistance and local/transfer impedance properties, using conductance-based models of hippocampal pyramidal neurons. We introduced progressive dendritic atrophy in a CA1 pyramidal neuron reconstruction through a pruning algorithm, measured all functional maps in each pruned reconstruction, and arrived at functional forms for the dependence of underlying measurements on dendritic length. We found that, across frequencies, atrophied neurons responded with higher efficiency to incoming inputs, and the transfer of signals across the dendritic tree was more effective in an atrophied reconstruction. Importantly, despite the presence of identical HCN-channel density gradients, spatial gradients in input resistance, local/transfer resonance frequencies and impedance profiles were significantly constricted in reconstructions with dendritic atrophy, where these physiological measurements across dendritic locations converged to similar values. These results revealed that, in atrophied dendritic structures, the presence of an ion channel density gradient alone was insufficient to sustain homologous functional maps along the same neuronal topograph. We assessed the biophysical basis for these conclusions and found that this atrophy-induced constriction of functional maps was mediated by an enhanced spatial spread of the influence of an HCN-channel cluster in atrophied trees. These results demonstrated that the influence fields of ion channel conductances need to be localized for channel gradients to express themselves as homologous functional maps, suggesting that ion channel gradients are necessary but not sufficient for the emergence of functional maps within single neurons.
Modified distributed iterative hard thresholding

In this paper, we suggest a modified distributed compressed sensing (CS) approach based on the iterative hard thresholding (IHT) algorithm, namely, distributed IHT (DIHT). Our technique improves upon a recently proposed DIHT algorithm in two ways. First, for sensing matrices with i.i. d. Gaussian entries, we suggest an efficient and tight method for computing the step size μ in IHT based on random matrix theory. Second, we improve upon the global computation (GC) step of DIHT by adapting this step to allow for complex data, and reducing the communication cost. The new GC operation involves solving a Top-K problem and is therefore referred to as GC.K. The GC.K-based DIHT has exactly the same recovery results as the centralized IHT given the same step size μ. Numerical results show that our approach significantly outperforms the modified thresholding algorithm (MTA), another GC algorithm for DIHT proposed in previous work. Our simulations also verify that the proposed method of computing μ renders the performance of DIHT close to the oracle-aided approach with a given “optimal” μ.
A Blockwise Descent Algorithm for Group-penalized Multiresponse and Multinomial Regression

In this paper we purpose a blockwise descent algorithm for group-penalized multiresponse regression. Using a quasi-newton framework we extend this to group-penalized multinomial regression. We give a publicly available implementation for these in R, and compare the speed of this algorithm to a competing algorithm --- we show that our implementation is an order of magnitude faster than its competitor, and can solve gene-expression-sized problems in real time.
MODELLING OF HYDROCARBON AND NITROGEN CHEMISTRY IN TURBULENT COMBUSTOR FLOWS USING DETAILED REACTION MECHANISMS

1 ABSTRACT The description of chemical kinetics in turbulent reactive flows is an important task to improve combustion models. This paper describes the inclusion of detailed chemical reaction mechanisms into the framework of a turbulent flame simulation. Calculations are based on a finite-volume solution procedure including submodels for turbulent flow, combustion of fuel and radiative heat transfer. The interaction of chemical reactions and turbulence is modelled using the Eddy Dissipation Concept (EDC). The basic idea of incorporating the reaction mechanism into the EDC is described. The oxidation of methane is described with a detailed C 1/C2 mechanism. The proposed model is applied to a 400kW turbulent diffusion methane flame in a cylindrical furnace. The measured trends in temperature and species concentrations of CH4, O2, CO and CO2 are adequately reproduced by the predicted profiles. To demonstrate the benefits and limits of this approach, the method is applied to predict gas phase reactions of the DeNOx technology 'reburning' using methane as reductive, which is applied to a pulverized coal flame. The detailed reaction mechanism of Miller & Bowman (1) is used to describe the nitrogen chemistry. The nitrogen chemistry is calculated decoupled from the hydrocarbon chemistry in a post-processor step. The modelling results are compared to experimental data of a bench scale test facility.
Management Insights

The service sector now accounts for more jobs globally than either manufacturing or agriculture. Continued growth of the service sector requires service innovations that raise service quality and productivity. Even large manufacturing firms are getting more and more of their revenue from offering services. Yet creating service innovations reliably is difficult, particularly for knowledge-intensive business services. Creating service innovations often means integrating technology, business, social, and client innovations. Traditional focus on individual areas or disciplines—such as engineering, management, and social science—is now giving way to interdisciplinary studies and interdisciplinary skills. Specifically, service science is a new interdisciplinary area of study that aims to address the challenge of becoming more systematic about innovation in service. It has recently emerged in business schools and in engineering schools, in curricula and in research, and it promises to shape the landscape of service businesses and service workers now and in the future.
Optimal Local Searching for Fast and Robust Textureless 3D Object Tracking in Highly Cluttered Backgrounds

Edge-based tracking is a fast and plausible approach for textureless 3D object tracking, but its robustness is still very challenging in highly cluttered backgrounds due to numerous local minima. To overcome this problem, we propose a novel method for fast and robust textureless 3D object tracking in highly cluttered backgrounds. The proposed method is based on optimal local searching of 3D-2D correspondences between a known 3D object model and 2D scene edges in an image with heavy background clutter. In our searching scheme, searching regions are partitioned into three levels (interior, contour, and exterior) with respect to the previous object region, and confident searching directions are determined by evaluating candidates of correspondences on their region levels; thus, the correspondences are searched among likely candidates in only the confident directions instead of searching through all candidates. To ensure the confident searching direction, we also adopt the region appearance, which is efficiently modeled on a newly defined local space (called a searching bundle). Experimental results and performance evaluations demonstrate that our method fully supports fast and robust textureless 3D object tracking even in highly cluttered backgrounds.
Economic Growth and Environmental Resource Allocation

The simple fact that environmental resources are endowments is found to have profound effects on their patterns of allocation with changes in income, population, and income inequality. For broad classes of theoretical models, and in Pareto efficient as well as decentralized economies, environmental quality is found to follow a U-shaped pattern with rising income. We examine population changes and variations in income inequality, and also find U-shaped patterns of behavior. Importantly, the marginal rate of substitution between consumption and environmental quality can generally be expected to rise monotonically with rising income. These results are found to have important policy implications.
A content-aware image resizing method with prominent object size adjusted

A novel method that prominent object size can be controlled during image resizing is proposed in this paper. By a simple parameter adjustment, this new method can change the primary object size according to user preference. To accomplish this, we present a new quad distortion energy criterion by considering both the shape and the size of a quad. Moreover, we improve the single resolution visual attention model based on the rarity of features to a multiresolution saliency model. Then, redefine the significance map as the weighted average of this multi-resolution saliency result and gradient magnitude.
Image registration of real-time video data using the SONIC reconfigurable computer platform

This paper is concerned with the image registration problem as applied to video sequences that have been subjected to geometric distortions. This work involves the development of a computationally efficient algorithm to restore the video sequence using image registration techniques. An approach based on motion vectors is proposed and is found to be successful in restoring the video sequence for any affine transform based distortion. The algorithm is implemented in FPGA hardware targeted for a reconfigurable computing platform called SONIC It is shown that the algorithm can efficiently restore the video data in realtime.
STIM2 drives Ca2+ oscillations through store‐operated Ca2+ entry caused by mild store depletion

Stromal cell‐interaction molecule (STIM) 2 senses Ca2+ levels in the endoplasmic reticulum and activates Ca2+ channels in the plasma membrane upon store depletion. Here we report that STIM2 is preferentially activated by low agonist concentrations that cause mild reductions in endoplasmic reticulum Ca2+ levels. This shows that store‐operated Ca2+ entry is regulated through signal strength, with weak stimuli activating STIM2 and strong stimuli engaging STIM1. The results help us to understand how receptor activation enables differential modulation of Ca2+ entry over a range of agonist concentrations and levels of store depletion.
Grasp planning for everyday objects based on primitive shape representation for parallel jaw grippers

Grasping various objects is a key function required for service robots. In this paper, seven kinds of shape primitives utilized for abstracting objects to be grasped are proposed for efficient grasp planning. These shape primitives are defined in order to provide an appropriate set of grasping configurations of parallel jaw grippers before planning. Each shape primitive has basic grasping configurations, each of which is parameterized. Fist, a target object is modeled by using one or more shape primitives. Then, possible grasping configurations are pruned based on the information of task environment and robot hand to be used. After sampling of candidate grasps, the most suitable grasping position and orientation is chosen by evaluating and ranking the quality of the candidates. We show an experimental result of the application of this shape primitive based grasp planning method to a mobile manipulator.