Miracle-dz/UniFAR-FTUs huggingface dataset:
An efficient multiuser loading algorithm for OFDM-based broadband wireless systems

In this paper we present a novel loading algorithm for OFDM-based multiuser communication system to maximize the total system throughput while satisfying the total power and users' rate constraints. The new scheme determines the subcarrier, bit, and power allocation by decoupling an NP-hard combinatorial problem into two steps: (1) resource allocation (how much power and how many subcarriers for each user) based on users' average channel gains and their rate requirements; and (2) subcarrier assignment and bit loading based on users' channel profiles across all subcarriers. Compared to existing iterative methods, the two-step approach offers comparable capacity gain with much lower complexity.
A stereo and rotating laser framework for UAV navigation in GPS denied environment

Recent developments in robotics sensing using either the active sensor-laser range finder (LRF) or passive sensors-camera systems have shown that the existing approaches are able to estimate the motion and reconstruct the environment in a typical GPS-denied environment such as indoor environments. However, for a 2D LRF, it can only provide a planar measurement due to the hardware limitations and the cost for 3D LRF is still too high for robotic systems. For camera systems, the 3D perception capability and lightweight are promising while it is not effective in long range, low illumination and low textured environment compared to the LRF. In the proposed framework, our first contribution is a senor integration system that combines a stereo camera with a rotating LRF. The stereo camera can achieve a fast and smooth motion estimation and the rotating LRF could construct a dense 3D environment. Our second contribution is an integration of a fast feature-based motion estimation with an accurate shape matching refinement. The proposed approaches have been built in our customized unmanned aerial vehicle (UAV) platform. We have verified our proposed approach through a series of extensive evaluations in clustered indoor environments and open outdoor environments.
Effects of grain boundaries on laser crystallized poly-Si MOSFET's

Data are reported for n-MOSFET's fabricated in laser crystallized poly-Si on amorphous insulating substrates. The dependence of electrical characteristics on the effective channel length in the range of 100 to 0.3 µm and on channel width from 120 to 20 µm is presented. The electron surface mobility is found to increase as the channel length is reduced, approaching that of devices in single-crystalline silicon. The source-to-drain leakage current, negligible for long channels, rapidly increases for channels shorter than ≃ 3 µm. This excessive current results from grain boundary diffusion of As from source and drain during high temperature fabrication steps.
Acetabular Reconstruction with Massive Allograft Shaped to the Cavity and Kerboull-Type Acetabular Reinforcement Device for Multiple Failures of Impaction Bone Graft: A Case Report

Acetabular component revision in the presence of severe bone loss is difficult for reconstructing an acetabular component in the anatomical hip center. Various treatment options are available, although often the acetabular defect cannot be corrected with a single option alone. Precise assessment of the bone loss and a suitable combination of methods are needed. Here we report a case of multiple failures with impaction bone grafting reconstruction for an acetabular bone defect of American Academy of Orthopedic Surgeons classification type III. We finally reconstructed the acetabulum with three femoral head allografts and a Kerboull-type acetabular reinforcement device. The allograft was a casted, jet-type helmet-like shape. A year later the patient was able to walk without a cane and perform light agricultural work. Accurate evaluation of the acetabular bone loss and appropriate reconstruction is important.
Cdc55p, the B-type regulatory subunit of protein phosphatase 2A, has multiple functions in mitosis and is required for the kinetochore/spindle checkpoint in Saccharomyces cerevisiae

Saccharomyces cerevisiae, like most eucaryotic cells, can prevent the onset of anaphase until chromosomes are properly aligned on the mitotic spindle. We determined that Cdc55p (regulatory B subunit of protein phosphatase 2A [PP2A]) is required for the kinetochore/spindle checkpoint regulatory pathway in yeast. ctf13 cdc55 double mutants could not maintain a ctf13-induced mitotic delay, as determined by antitubulin staining and levels of histone H1 kinase activity. In addition, cdc55::LEU2 mutants and tpd3::LEU2 mutants (regulatory A subunit of PP2A) were nocodazole sensitive and exhibited the phenotypes of previously identified kinetochore/spindle checkpoint mutants. Inactivating CDC55 did not simply bypass the arrest that results from inhibiting ubiquitin-dependent proteolysis because cdc16-1 cdc55::LEU2 and cdc23-1 cdc55::LEU2 double mutants arrested normally at elevated temperatures. CDC55 is specific for the kinetochore/spindle checkpoint because cdc55 mutants showed normal sensitivity to gamma radiation and hydroxyurea. The conditional lethality and the abnormal cellular morphogenesis of cdc55::LEU2 were suppressed by cdc28F19, suggesting that the cdc55 phenotypes are dependent on the phosphorylation state of Cdc28p. In contrast, the nocodazole sensitivity of cdc55::LEU2 was not suppressed by cdc28F19. Therefore, the mitotic checkpoint activity of CDC55 (and TPD3) is independent of regulated phosphorylation of Cdc28p. Finally, cdc55::LEU2 suppresses the temperature sensitivity of cdc20-1, suggesting additional roles for CDC55 in mitosis.
Comparison of 2 Measures of HIV Sexual Risk Behavior in Women in Outpatient Drug Treatment Programs

Objectives:HIV/STD sexual risk behavior is common among women who use drugs. To effectively implement interventions in busy drug treatment programs, it is important to have a rapid and accurate measure of sexual risk. This study compared 2 dichotomous ratings of unprotected sex among women in substance abuse treatment who participated in a HIV sexual risk reduction clinical trial: (1) any unprotected vaginal/anal sex occasions in the last 3 months, versus (2) unprotected vaginal/anal sex at last sexual occasion (LSO). Methods:Sexually active women from 12 methadone maintenance or psychosocial outpatient programs who had a main (n = 363) or other male partner(s) (n = 117) were assessed at baseline for unprotected sex in the last 3 months and at LSO. These 2 measures were compared for congruence. Results:Participants who reported unprotected sex at LSO consistently reported at least 1 unprotected sex occasion in the last 3 months: 99.1% for main male partner sex and 93.8% for other male partner sex. Participants who reported using a condom at LSO were less consistent of those reporting condom use at LSO; only 30.3% reported protected sex at all sex occasions in the last 3 months with main male partner and only 67.6% for other male partner(s). Conclusions:Use of one question about condom protected sex at LSO appears to be a partially useful tool. It can be useful for detecting sexual risk in clinical or research settings wherein the central focus is not on sexual behavior or when time is limited.
The economic and clinical impact of an inpatient palliative care consultation service: a multifaceted approach.

BACKGROUND While there has been a rapid increase of inpatient palliative care (PC) programs, the financial and clinical benefits have not been well established. OBJECTIVE Determine the effect of an inpatient PC consultation service on costs and clinical outcomes. DESIGN Multifaceted study included: (1) interrupted time-series design utilizing mean daily costs preintervention and postintervention; (2) matched cohort analysis comparing PC to usual care patients; and (3) analysis of symptom control after consultation. SETTING Large private, not-for-profit, academic medical center in San Francisco, California, 2004-2006. SUBJECTS Time series analysis included 282 PC patients; matched cohorts included 27 PC with 128 usual care patients; clinical outcome analysis of 48 PC patients. MAIN OUTCOME MEASURE(S) Mean daily patient costs and length of stay (LOS); pain, dyspnea, and secretions assessment scores. RESULTS Mean daily costs were reduced 33% (p < 0.01) from preintervention to postintervention period. Mean length of stay (LOS) was reduced 30%. Mean daily costs for PC patients were 14.5% lower compared to usual care patients (p < 0.01). Pain, dyspnea, and secretions scores were reduced by 86%, 64%, and 87%, respectively. Over the study period, time to PC referral as well as overall ALOS were reduced by 50%. CONCLUSIONS The large reduction in mean daily costs and LOS resulted in an estimated annual savings of $2.2 million in the study hospital. Our results extend the evidence base of financial and clinical benefits associated with inpatient PC programs. We recommend additional study of best practices for identifying patients and providing consultation services, in addition to progressive management support and reimbursement policy.
A battery model including hysteresis for State-of-Charge estimation in Ni-MH battery

According to the measurement of the Ni-MH battery electrochemical impedance spectroscopy (EIS) and the relationship of the OCV-SOC , one basic equivalent-circuit model structure including hysteresis voltage for Ni-MH battery is presented, which can be applied for the estimation of battery state of charge (SOC). The model approach is evaluated by comparing the measured and the simulated battery voltage corresponding to several current profiles. Voltage hysteresis is shown to play a critical role in the Ni-MH battery model. Then the relationships among different physic variables and states variables of this model are expressed by the discrete-time state-space functions. Based on the Extended Kalman Filter, the Stare of Charge (SOC) for the Ni-MH battery model is estimated by using the date such as current and voltage which are real-time tested by the battery test instrument. Finally, the behavior of the algorithm in terms of accuracy is examined. Voltage hysteresis is shown to play a critical role, and this effect makes determining the SOC particularly difficult for Ni-MH batteries relative to other battery systems.
A CERATOPSID DINOSAUR PARIETAL FROM NEW MEXICO AND ITS IMPLICATIONS FOR CERATOPSID BIOGEOGRAPHY AND SYSTEMATICS

Ceratopsid (horned dinosaur) cranial material is relatively common in the Upper Cretaceous Naashoibito Member of the Kirtland Formation, San Juan Basin, New Mexico. However, the specimens are fragmentary, making identification problematic. Previously, it has been suggested that the Naashoibito specimens represent Torosaurus utahensis, a chasmosaurine taxon originally known from the North Horn Formation of Utah. This identification has been used to support a Lancian age for the Naashoibito Member and the Alamo Wash local fauna of the Kirtland Formation (e.g., Lehman, 1981; Lucas et al., 1987). Others (e.g., Lehman, 1990) have synonomized T. utahensis with Torosaurus latus, a taxon otherwise known only from the late Maastrichtian Lance and Hell Creek formations. Recent work has upheld the validity of T. utahensis (Sullivan et al., 2005). However, Sullivan and colleagues (2005) have also argued that no previously described ceratopsid specimens from the Naashoibito Member are identifiable beyond the level of Chasmosaurinae indeterminate and therefore are not useful for assessing biostratigraphic correlations and ceratopsid biogeography. Here we describe a partial chasmosaurine ceratopsid parietal from the Naashoibito Member of the Kirtland Formation. Although other fragmentary parietals have been recovered from this unit (e.g., Lehman, 1981; Lucas et al., 1987), the new specimen exhibits unusual morphology: an epoccipital element positioned along the midline. This feature has previously been reported only in Triceratops, a taxon not known from south of the Denver Basin. The occurrence of such a feature in a cera-
Study on the stakeholders of energy system in China

Energy related issues have been the bottlenecks for the sustainable development in China, and sustainable energy system is the key solution to these issues. Energy system in China has various stakeholders, and how to straighten out the responsibility, power and benefit of the stakeholders has been one of the key issues for the construction of sustainable energy system. According to stakeholder theory, the stakeholders of energy system in China and their interest requirements were systematically analyzed, and the driving force model for the construction of sustainable energy system in China was established, on basis of which the countermeasures were proposed that a new government-dominated energy management mode based on stakeholderspsila participation should be set up, in which the sync coordinate development of the stakeholders would be realized.
Steroids are required for epidermal cell fate establishment in Arabidopsis roots

The simple structure of Arabidopsis roots provides an excellent model system to study epidermal cell fate specification. Epidermal cells in contact with 2 underlying cortical cells differentiate into hair cells (H cells; trichoblasts), whereas cells that contact only a single cortical cell differentiate into mature hairless cells (N cells; atrichoblasts). This position-dependent patterning, in combination with the constrained orientation of cell divisions, results in hair and nonhair cell files running longitudinally along the root epidermis. Here, we present strong evidence that steroid hormones called brassinosteroids (BRs) are required to maintain position-dependent fate specification in roots. We show that BRs are required for normal expression levels and patterns of WEREWOLF (WER) and GLABRA2 (GL2), master regulators of epidermal patterning. Loss of BR signaling results in loss of hair cells in H positions, likely as a consequence of reduced expression of CAPRICE (CPC), a direct downstream target of WER. Our observations demonstrate that in addition to their well-known role in cell expansion, BRs play an essential role in directing cell fate.
Computational techniques for accurate performance evaluation of multirate, multihop communication networks

Computational techniques are presented for the connection-level performance evaluation of communication networks, with stochastic multirate traffic, state-dependent admission control, alternate routing, and general topology-all characteristics of emerging integrated service networks. The techniques involve solutions of systems of fixed-point equations, which estimate equilibrium network behaviour. Although similar techniques have been applied with success to single-rate fully connected networks, the curse of dimensionality arises when the techniques are extended to multirate, multihop networks, and the cost of solving the fixed point equations exactly is exponential. This exponential barrier is skirted by exploiting, in particular, a close relationship with the network reliability problem, and by borrowing effective heuristics from the reliability domain. A series of experiments are reported on, comparing the estimates from the new techniques to the results of discrete-event simulations.
Closed-loop controlled nanoprobing inside SEM

Probing nanostructures (e.g., nanoelectronics) requires accurate and precise nanopositioning. Furthermore, since measuring I-V data from DC to GHz typically takes more than a minute, little drift is tolerated during the data collection process. This paper reports a closed-loop controlled nanomanipulation system for operation inside a scanning electron microscope (SEM). The system consists of long range coarse positioners and high precision fine positioners. A new position sensing method was developed to achieve nanometer sensing resolution. Closed-loop controller is introduced to control fine. Experimental results demonstrate that the system is capable of automated probing of nanostructures with accuracy better than 3 nm and a drift rate <; 1 nm/min.
Recognizing Human Emotional State From Audiovisual Signals*

Machine recognition of human emotional state is an important component for efficient human-computer interaction. The majority of existing works address this problem by utilizing audio signals alone, or visual information only. In this paper, we explore a systematic approach for recognition of human emotional state from audiovisual signals. The audio characteristics of emotional speech are represented by the extracted prosodic, Mel-frequency Cepstral Coefficient (MFCC), and formant frequency features. A face detection scheme based on HSV color model is used to detect the face from the background. The visual information is represented by Gabor wavelet features. We perform feature selection by using a stepwise method based on Mahalanobis distance. The selected audiovisual features are used to classify the data into their corresponding emotions. Based on a comparative study of different classification algorithms and specific characteristics of individual emotion, a novel multiclassifier scheme is proposed to boost the recognition performance. The feasibility of the proposed system is tested over a database that incorporates human subjects from different languages and cultural backgrounds. Experimental results demonstrate the effectiveness of the proposed system. The multiclassifier scheme achieves the best overall recognition rate of 82.14%.
Smoking stage relations to peer, school and parental factors among secondary school students in Kinta, Perak.

BACKGROUND To identify the prevalence of different stages of smoking and differences in associated risk factors. MATERIALS AND METHODS Thos longitudinal study started in February 2011 and the subjects were 2552 form one students aged between twelve to thirteen years of from 15 government secondary schools of Kinta, Perak. Data on demographic, parental, school and peer factors were collected using a self-administered questionnaire. We examined the effects of peer, school and parental factors on the five stages of smoking; never smokers, susceptible never smokers, experimenters, current smokers and ex-smokers, at baseline. RESULTS In the sample, 19.3% were susceptible never smokers, 5.5% were current smokers 6% were experimenters and 3.1% were ex-smokers. Gender, ethnicity, best friends' smoking status, high peer pressure, higher number of relatives who smoked and parental monitoring were found to be associated with smoking stages. Presence of parent-teen conflict was only associated with susceptible never smokers and experimenters whereas absence of home discussion on smoking hazards was associated with susceptible never smokers and current smokers. CONCLUSIONS We identified variations in the factors associated with the different stages of smoking. Our results highlight that anti-smoking strategies should be tailored according to the different smoking stages.
Regulation of Nerve Growth Factor Action on Nsp100 Phosphorylation in PC12h Cells by Calcium

Abstract: Previous work from these laboratories has shown that in PC12 cells the phosphorylation of a specific soluble protein is decreased by treatment with nerve growth factor. This protein, designated Nsp100, and its kinase have been separated and partially purified from PC12 cells. The present studies have been designed to investigate the role of calcium in this action of nerve growth factor. It is shown here, using PC12h cells, that A23187, a calcium ionophore, and high levels of K+, a depolarizing stimulus, also decrease phosphorylation of Nsp100. Furthermore, the actions of nerve growth factor as well as those of A23187 and high levels of K+ are prevented by treatment of the cells with the calcium chelator EGTA. It is also shown that agents that raise levels of cyclic AMP in the cells, specifically dibutyryl cyclic AMP and cholera toxin, also decrease phosphorylation of Nsp100 but, in addition, increase phosphorylation of tyrosine hydroxylase. The action of these latter agents on Nsp100 is blocked by EGTA, but their action on tyrosine hydroxylase is not, indicating that even agents such as cholera toxin act on Nsp100 through a Ca2+‐dependent mechanism.
The c-fos Proto-Oncogene Is a Target for Transactivation by the p53 Tumor Suppressor

ABSTRACT The p53 tumor suppressor gene is mutated in over 50% of human cancers, resulting in inactivation of the wild-type (wt) p53 protein. The most notable biochemical feature of p53 is its ability to act as a sequence-specific transcriptional activator. Through use of the suppression subtractive hybridization differential screening technique, we identified c-fos as a target for transcriptional stimulation by p53 in cells undergoing p53-mediated apoptosis. Overexpression of wt p53 induces c-fos mRNA and protein. Moreover, in vivo induction of c-fos in the thymus following whole-body exposure to ionizing radiation is p53 dependent. p53 responsiveness does not reside in the basal c-fos promoter. Rather, a distinct region within the c-fos gene first intron binds specifically to p53 and confers upon the c-fos promoter the ability to become transcriptionally activated by wt p53. Identification of c-fos as a specific target for transcriptional activation by p53 establishes a direct link between these two pivotal regulatory proteins and raises the possibility that c-fos contributes to some of the biological effects of p53.
Diversity and Functional Analysis of the FeMo-Cofactor Maturase NifB

One of the main hurdles to engineer nitrogenase in a non-diazotrophic host is achieving NifB activity. NifB is an extremely unstable and oxygen sensitive protein that catalyzes a low-potential SAM-radical dependent reaction. The product of NifB activity is called NifB-co, a complex [8Fe-9S-C] cluster that serves as obligate intermediate in the biosyntheses of the active-site cofactors of all known nitrogenases. Here we study the diversity and phylogeny of naturally occurring NifB proteins, their protein architecture and the functions of the distinct NifB domains in order to understand what defines a catalytically active NifB. Focus is on NifB from the thermophile Chlorobium tepidum (two-domain architecture), the hyperthermophile Methanocaldococcus infernus (single-domain architecture) and the mesophile Klebsiella oxytoca (two-domain architecture), showing in silico characterization of their nitrogen fixation (nif) gene clusters, conserved NifB motifs, and functionality. C. tepidum and M. infernus NifB were able to complement an Azotobacter vinelandii (ΔnifB) mutant restoring the Nif+ phenotype and thus demonstrating their functionality in vivo. In addition, purified C. tepidum NifB exhibited activity in the in vitro NifB-dependent nitrogenase reconstitution assay. Intriguingly, changing the two-domain K. oxytoca NifB to single-domain by removal of the C-terminal NifX-like extension resulted in higher in vivo nitrogenase activity, demonstrating that this domain is not required for nitrogen fixation in mesophiles.