Miracle-dz/UniFAR-FTUs huggingface dataset:
Joint prioritized link scheduling and resource allocation for OFDMA-based wireless networks

In this paper, we study the joint prioritized link scheduling and resource allocation for the OFDMA-based wireless network which serves two classes of user links, namely non-prioritized (low-priority) and prioritized (high-priority) links. Our design objectives are to maximize the number of non-prioritized links to be scheduled and to maximize the weighted sum rate of all scheduled links while guaranteeing the minimum rate requirements of all prioritized links. To solve this problem, we first transform the original problem into a singlestage optimization problem which is a Mixed Integer Nonlinear Program (MINLP). Then, we propose an iterative algorithm to solve the transformed problem where we sequentially perform modified power allocation and link removals. We prove the convergence and characterize important properties of the proposed algorithm. Numerical results show that the proposed algorithm significantly outperforms the greedy uniform power allocation and the rounding-based admission algorithm in term of the average number of scheduled non-prioritized links and the weighted sum rate.
Formulation, Characterization, and Optimization of Fast-Dissolve Tablets Containing Celecoxib Solid Dispersion

Celecoxib is a poorly water-soluble drug, and bioavailability from its crystalline form is very low. The purpose of the present investigation was to increase the solubility and dissolution rate of celecoxib by preparing a solid dispersion with polyvinyl pyrrolidone K30 (PVP-K30) using a solvent-evaporation method. The dissolution profiles of developed formulations in distilled water containing 1% SLS were studied. Drug–polymer interactions were investigated using differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FTIR). For the preparation of celecoxib fast-dissolve tablets, a 1:2 solid dispersion with PVP-K30 was used with croscarmellose sodium as a superdisintegrant and Pearlitol 200SD (pearlitol) as a pore-forming agent. A 3 2 full-factorial design was employed to study the effect of independent variables, the amounts of croscarmellose sodium (X1) and pearlitol (X2), on dependent variables, disintegration time, percentage friability, wettability, and percentage of drug released after 20 min (Q20). The results show that a dispersion of the drug in polymer considerably enhanced the dissolution rate. The drug-to-carrier ratio is the controlling factor for dissolution improvement. FTIR spectra show no chemical incompatibility between the drug and PVP-K30. FTIR and DSC data indicate that celecoxib was in the amorphous form, which explains the faster dissolution rate of the drug from its solid dispersions. Concerning the optimization study, multiple regression analysis reveals that an optimum concentration of croscarmellose sodium and a higher percentage of pearlitol are required for obtaining rapidly disintegrating tablets.
Regional Cerebral Blood Flow and Cerebrovascular Reactivity in IDDM

OBJECTIVE To investigate both rCBF and cerebrovascular reactivity, evaluated as pre- and post-ACZ rCBF differences in a group of IDDM patients with differences in duration of disease and severity of complications. RESEARCH DESIGN AND METHODS rCBF was measured by the 133Xenon inhalation method in 20 IDDM patients and in 15 healthy control subjects before and after an intravenous injection of ACZ, a carbonic anhydrase inhibitor commonly used to assess cerebrovascular reactivity. RESULTS Basal global CBF (the mean of 32 regional values) was within the normal range in all patients but 1, who showed slight hyperperfusion; moreover, in 3 patients with long-lasting disease, some hypoperfused regions were found. ANOVA showed an inverse correlation between basal global CBF (P < 0.01) and duration of diabetes, but no correlation with Hb, MABP, serum glucose concentration, or GHb. Compared with control subjects, the percentage of global CBF increment after ACZ administration was significantly impaired in 4 patients and gave a borderline response in 2 patients; 4 of these poor ACZ responders had retinopathy, and 1 had suffered from a TIA. Duration of diabetes, Hb, MABP, serum glucose concentration, and GHb did not correlate with the percentage of post-ACZ global CBF changes, and did not differ among the 6 poor ACZ responders and the other diabetic patients or control subjects. CONCLUSIONS These results confirm that global CBF is within the normal range in most IDDM patients, although it is significantly influenced by the duration of diabetes; pathophysiological correlates of the altered cerebrovascular reactivity need to be further investigated. rCBF measurements, before and after ACZ administration, seem to represent a safe and reliable tool for assessing cerebrovascular function in IDDM.
Study of Ti-Enriched CoCrMo Alloy for Dental Application

Metallic materials can be considered to be in a peculiar position for production of medical devices, because of their attractive properties. In this paper, a new enriched Co-based composition is proposed for dental application, starting from a conventional CoCrMo alloy. Macrostructural and microstructural investigations, mechanical and corrosion resistance evaluation, and metal ions release are carried out. The best composition, among the studied alloys, is identified for dental purpose.
Genome-Wide Identification of miRNAs Responsive to Drought in Peach (Prunus persica) by High-Throughput Deep Sequencing

Peach (Prunus persica L.) is one of the most important worldwide fresh fruits. Since fruit growth largely depends on adequate water supply, drought stress is considered as the most important abiotic stress limiting fleshy fruit production and quality in peach. Plant responses to drought stress are regulated both at transcriptional and post-transcriptional level. As post-transcriptional gene regulators, miRNAs (miRNAs) are small (19–25 nucleotides in length), endogenous, non-coding RNAs. Recent studies indicate that miRNAs are involved in plant responses to drought. Therefore, Illumina deep sequencing technology was used for genome-wide identification of miRNAs and their expression profile in response to drought in peach. In this study, four sRNA libraries were constructed from leaf control (LC), leaf stress (LS), root control (RC) and root stress (RS) samples. We identified a total of 531, 471, 535 and 487 known mature miRNAs in LC, LS, RC and RS libraries, respectively. The expression level of 262 (104 up-regulated, 158 down-regulated) of the 453 miRNAs changed significantly in leaf tissue, whereas 368 (221 up-regulated, 147 down-regulated) of the 465 miRNAs had expression levels that changed significantly in root tissue upon drought stress. Additionally, a total of 197, 221, 238 and 265 novel miRNA precursor candidates were identified from LC, LS, RC and RS libraries, respectively. Target transcripts (137 for LC, 133 for LS, 148 for RC and 153 for RS) generated significant Gene Ontology (GO) terms related to DNA binding and catalytic activites. Genome-wide miRNA expression analysis of peach by deep sequencing approach helped to expand our understanding of miRNA function in response to drought stress in peach and Rosaceae. A set of differentially expressed miRNAs could pave the way for developing new strategies to alleviate the adverse effects of drought stress on plant growth and development.
Proton Matrix ENDOR Studies on Ca2+-depleted and Sr2+-substituted Manganese Cluster in Photosystem II*

Background: Ca2+ plays an essential role in oxygen evolution in photosystem II. Results: ENDOR spectra showed that some protons surrounding the manganese cluster are lost and modified by Ca2+ depletion. Conclusion: The proton signals arising from water molecules ligated to the Ca2+ were identified. Significance: The roles of Ca2+ are the maintenance of the hydrogen bond network near the Ca2+ site and electron transfer pathway to the manganese cluster. Proton matrix ENDOR spectra were measured for Ca2+-depleted and Sr2+-substituted photosystem II (PSII) membrane samples from spinach and core complexes from Thermosynechococcus vulcanus in the S2 state. The ENDOR spectra obtained were similar for untreated PSII from T. vulcanus and spinach, as well as for Ca2+-containing and Sr2+-substituted PSII, indicating that the proton arrangements around the manganese cluster in cyanobacterial and higher plant PSII and Ca2+-containing and Sr2+-substituted PSII are similar in the S2 state, in agreement with the similarity of the crystal structure of both Ca2+-containing and Sr2+-substituted PSII in the S1 state. Nevertheless, slightly different hyperfine separations were found between Ca2+-containing and Sr2+-substituted PSII because of modifications of the water protons ligating to the Sr2+ ion. Importantly, Ca2+ depletion caused the loss of ENDOR signals with a 1.36-MHz separation because of the loss of the water proton W4 connecting Ca2+ and YZ directly. With respect to the crystal structure and the functions of Ca2+ in oxygen evolution, it was concluded that the roles of Ca2+ and Sr2+ involve the maintenance of the hydrogen bond network near the Ca2+ site and electron transfer pathway to the manganese cluster.
The prognostic value of the Glasgow coma scale, serum acetylcholinesterase and leukocyte levels in acute organophosphorus poisoning

Background and Objectives: Organophosphate poisoning (OP) is a serious clinical condition that may sometimes be fatal. The aim of this study was to determine whether the Glasgow coma scale (GCS), and serum acetylcholinesterase and leukocyte levels have prognostic value in acute OP poisoning. Design and Setting: Retrospective review of records of patients admitted to the intensive care unit of Selcuk University, Meram Medical Faculty, Emergency Department, Konya, Turkey, between January 2006 and January 2009. Methods: We studied acutely OP-poisoned patients admitted within 24 hours after OP exposure. Results: The mean age of the 25 patients was 37 years (range, 20-80 years). Three (12%) of the 25 patients (male-female ratio, 12:13) died. The mean GCS values of the patients who died were significantly lower compared to those of the group that survived (4 vs 11.7, respectively P<.05). While the mean serum acetylcholinesterase levels were lower in the patients who died, the difference in the mean serum acetylcholinesterase levels between the patients who died and the ones who survived was not statistically significant (3841 IU/L vs. 1768 IU/L, respectively). Conclusion: Although serum cholinesterase values can be used in the quick diagnosis, their efficiency at predicting outcome in patients with OP poisoning has not been established. It has also been determined that serum leukocyte values have no prognostic value in OP poisoning, but GCS values have been found to be effective in predicting the outcome.
The Neighborhood Characteristics of Malapropisms

This study examined the phonological neighborhood characteristics (frequency, density, and neighborhood frequency) of 138 malapropisms. Malapropisms are whole word substitutions that are phonologically, but not semantically, related. A statistical analysis of a speech error corpus suggests that neighborhood density and word frequency differentially affected the number of malapropisms. Specifically, a greater number of malapropisms were found among high frequency words with dense neighborhoods than with sparse neighborhoods. Exactly the opposite pattern was found among low frequency words. That is, more errors were found among low frequency words with sparse neighborhoods than with dense neighborhoods. More malapropisms resided in low frequency neighborhoods than in high. The average word frequency, average neighborhood density, and average neighborhood frequency of the malapropisms were significantly lower than the same averages computed from randomly sampled control words. Finally, more target words were replaced by error words that had relatively higher frequency than by error words that had relatively lower frequency. The implications of these findings for models of lexical representation and processing are discussed.
To gain or not to lose? The effect of monetary reward on motivation and knowledge contribution

Purpose The purpose of this paper is to investigate the effect of reward type on knowledge contribution behavior. Individual knowledge contribution, which determines the effectiveness of information systems, benefits the organization at the cost of individual advantage as knowledge is usually considered highly private or even a source of individual prestige. Therefore, organizations provide rewards to compensate for their contributors’ knowledge loss. Surprisingly, some scholars report a positive relationship between reward and knowledge contribution, while others find this relationship to be insignificant or even negative. Based on regulatory focus theory, this study proposes and tests that such inconsistencies result from disparity between reward type and knowledge contribution measures. Design/methodology/approach A between-group laboratory experiment with 144 undergraduate student is designed and hierarchical regression is applied to test the hypotheses. Findings An incremental reward (additional reward for attaining outstanding achievements) aroused individual promotion focus, leading to an increase in self-perceived knowledge contribution (self-reported) and knowledge contribution quantity (experiment observers rated), but a decrease in knowledge contribution quality (peer rated). However, a decremental reward (deducted for errors) primed individual prevention focus, leading to an increase in self-perceived knowledge contribution (self-reported) and knowledge contribution quality (peer rated), but a decrease in knowledge contribution quantity (experiment observers rated). Originality/value The findings help explain why previous empirical results on the reward-knowledge contribution relationship were inconsistent and add to extant literature by introducing a new theoretical perspective for understanding motivation in knowledge management research.
The mode of activation of pyramidal tract cells by intracortical stimuli.

1. Direct and indirect effects of intracortical stimulattion on pyramidal tract cells were compared in the monkey and in the cat under barbiturate or chloralose anaesthesia. The hind‐limb motor areas were explored, that in the monkey only within the convex part of the precentral gyrus. The intracortical stimuli were applied in the nearest vicinity of pyramidal tract cells, where antidromic spike potentials of single cells were recorded. 2. Average records of descending volleys in corticospinal tract fibres were taken from the surface of the lateral funiculus or from its dissected fascicles. The sensitivity of the recording was sufficient to detect responses in single fibres. 3. The latencies of the earliest descending volleys evoked by weak intracortical stimuli were compared with the latencies of the antidromic spike potentials of pyramidal tract cells evoked by stimulation of the lateral funiculus at a low lumbar level (same conduction distance). Only in about one third of cases these latencies were similar and compatible with a direct activation of pyramidal tract cells. In the remaining cases they indicated mono‐ or polysynaptic activation of pyramidal tract cells. 4. Latencies of the later components of the descending volleys indicated that they were due to indirect activation of pyramidal tract cells in practically all cases. 5. The components of the descending volleys attributable to the indirect activation of pyramidal tract cells were greatly increased when repetitive intracortical stimuli were applied instead of single ones. 6. The investigation leads to the conclusion that a weak intracortical stimulation is relatively ineffective in a direct excitation of pyramidal tract cells and that the effects of such a stimulation are mainly indirect, especially when repetitive stimuli are used.
Rapid Analysis of Cocaine in Saliva by Surface-Enhanced Raman Spectroscopy

Increases in illicit drug use and the number of emergency-room visits attributable to drug misuse or abuse highlight the need for an efficient, reliable method to detect drugs in patients in order to provide rapid and appropriate care. A surface-enhanced Raman spectroscopy (SERS)-based method was successfully developed to rapidly measure cocaine in saliva at clinical concentrations, as low as 25 ng/mL. Pretreatment steps comprising chemical separation, physical separation, and solid-phase extraction were investigated to recover the analyte drug from the saliva matrix. Samples were analyzed using Fourier-transform (FT) and dispersive Raman systems, and statistical analysis of the results shows that the method is both reliable and accurate, and could be used to quantify unknown samples. The procedure requires minimal space and equipment and can be completed in less than 16 minutes. Finally, due to the inclusion of a buffer solution and the use of multiple robust pretreatment steps, with minimal further development this method could also be applied to other drugs of interest.
Heteroclinic Contours in Neural Ensembles and the Winnerless Competition Principle

The ability of nonlinear dynamical systems to process incoming information is a key problem of many fundamental and applied sciences. Information processing by computation with attractors (steady states, limit cycles and strange attractors) has been a subject of many publications. In this paper, we discuss a new direction in information dynamics based on neurophysiological experiments that can be applied for the explanation and prediction of many phenomena in living biological systems and for the design of new paradigms in neural computation. This new concept is the Winnerless Competition (WLC) principle. The main point of this principle is the transformation of the incoming identity or spatial inputs into identity-temporal output based on the intrinsic switching dynamics of the neural system. In the presence of stimuli the sequence of the switching, whose geometrical image in the phase space is a heteroclinic contour, uniquely depends on the incoming information. The key problem in the realization of the WLC principle is the robustness against noise and, simultaneously, the sensitivity of the switching to the incoming input. In this paper we prove two theorems about the stability of the sequential switching and give several examples of WLC networks that illustrate the coexistence of sensitivity and robustness.
Cardiac Injury after 10 Gy Total Body Irradiation: Indirect Role of Effects on Abdominal Organs

The objective of this study was to determine whether radiation-induced injury to the heart after 10 Gy total body irradiation (TBI) is direct or indirect. Young male WAG/RijCmcr rats received a 10 Gy single dose using TBI, upper hemi-body (UHB) irradiation, lower hemi-body (LHB) irradiation, TBI with the kidneys shielded or LHB irradiation with the intestines shielded. Age-matched, sham-irradiated rats served as controls. The lipid profile, kidney injury, heart and liver morphology and cardiac function were determined up to 120 days after irradiation. LHB, but not UHB irradiation, increased the risk factors for cardiac disease as well as the occurrence of cardiac and kidney injury in a way that was quantitatively and qualitatively similar to that observed after TBI. Shielding of the kidneys prevented the increases in risk factors for cardiac disease. Shielding of the intestines did not prevent the increases in risk factors for cardiac disease. There was no histological evidence of liver injury 120 days after irradiation. Injury to the heart from irradiation appears to be indirect, supporting the notion that injury to abdominal organs, principally the kidneys, is responsible for the increased risk factors for and the occurrence of cardiac disease after TBI and LHB irradiation.
The Study of Relationship between Spiritual Intelligence and Modes of Students' Attachment

Introduction: Intelligence is a concept that the man has been interested in enquiry on its dimensions, manifestations, qualities and types. At the same time, there has been little coherent and systematic research on the understanding and explanation of the qualities and components of the spiritual intelligence compared with other kinds of intelligence. This study was performed aiming at examining the relation between the spiritual intelligence and the components of attachment. Methods : the present study is a descriptive-analytical and cross-sectional one. The statistical population includes all female students of Payame Noor University in Esfarayen County that were evaluated in a sample of 115 students. The sampling method of this study is class-based in which the classes are defined as fields of education and each sample field is selected randomly in proportionate with the number of students. The spiritual intelligence questionnaire provided by Abdollahzadeh and colleagues and Collins and Read attachment scale were also used for collecting data. Results: The results of this study showed that the research sample was from the age group of 18-35 and most persons were 21-24 years old. There was also a significant relation between the educational semester and the stress component of attachment and the latter increased as the semester progressed further (8 semesters and over). 71% were bachelors and 29% were married and no difference was found in this respect. The results also show that most persons enjoy a spiritual intelligence lower than medium and a below one. Little relation was found between the spiritual intelligence and modes of safe and avoidance and stress attachments. The results show that there is a relation between the spiritual intelligence and components of attachment. Conclusion : The relation between the stress component of attachment and the spiritual intelligence has a negative direction that shows that as the extent of the spiritual intelligence increases, the stress extent of attachment (fear of being rejected) decreases.
Planters and the Making of a "New South": Class, Politics, and Development in North Carolina, 1865-1900

Billings disputes the assumption that an incipient merchant class built the state's cotton mills; he reveals that a majority of the early mills was owned by prominent planters and agrarians. He shows the persistent hegemony and support for industrialization among the landed upper class and describes several generations of five powerful North Carolina families who spread plantation paternalism to the mill-village system. Billings compares this with similar cases in Germany and Japan.A UNC Press Enduring Edition -- UNC Press Enduring Editions use the latest in digital technology to make available again books from our distinguished backlist that were previously out of print. These editions are published unaltered from the original, and are presented in affordable paperback formats, bringing readers both historical and cultural value.