Depth-Optimized Reversible Circuit Synthesis

In this paper, simultaneous reduction of circuit depth and synthesis cost of reversible circuits in quantum technologies with limited interaction is addressed. We developed a cycle-based synthesis algorithm which uses negative controls and limited distance between gate lines. To improve circuit depth, a new parallel structure is introduced in which before synthesis a set of disjoint cycles are extracted from the input specification and distributed into some subsets. The cycles of each subset are synthesized independently on different sets of ancillae. Accordingly, each disjoint set can be synthesized by different synthesis methods. Our analysis shows that the best worst-case synthesis cost of reversible circuits in the linear nearest neighbor architecture is improved by the proposed approach. Our experimental results reveal the effectiveness of the proposed approach to reduce cost and circuit depth for several benchmarks.Comment: 13 pages, 6 figures, 5 tables; Quantum Information Processing (QINP) journal, 201

Study of symptoms of anxiety and depression and quality of life before and after radioactive iodine intake in patients with thyroid cancer

Introduction: Thyroid cancer can affect the quality of life of patients and no validated study has beenconducted to evaluate the quality of life in patients with thyroid cancer in Iran. The purpose of thisstudy was to evaluate the changes of quality of life in patients with thyroid cancer treated withradioactive iodine.Materials and Methods: According to a prospective longitudinal study, quality of life and mood inthese patients were studied by two questionnaires: Short Form Health Survey (SF36) and HospitalAnxiety and Depression Scale (HADS) provided to the patients by the researcher. The questionnaireswere completed one month before iodine injection, on the day of injection, at the end of the secondweek, and sixth month after radioactive iodine injection. The patients were treated in two groups of100 and 150 μ Curie. After completing the questionnaires, the resulting scores at four different timepoints were evaluated and compared.Results: The mean SF36 scores were lower than one month before iodine intake and after 6 months,the mean scores were lower than one month before iodine intake. The mean HADS scores one monthafter iodine intake were not significantly different from the time of iodine intake, but after two weeks,anxiety and depression were reduced, and the result continued till the sixth months. No difference wasfound in the levels of anxiety and depression between the doses of 100 and 150 μ Curie.Conclusion: The highest level of anxiety and depression and quality of life during the first two weeksof iodine intake reduced with time and iodine intake dose did not affect it

Dynamics of population activity in rat sensory cortex: Network correlations predict anatomical arrangement and information content

To study the spatiotemporal dynamics of neural activity in a cortical population, we implanted a 10 × 10 microelectrode array in the vibrissal cortex of urethane-anesthetized rats. We recorded spontaneous neuronal activity as well as activity evoked in response to sustained and brief sensory stimulation. To quantify the temporal dynamics of activity, we computed the probability distribution function (PDF) of spiking on one electrode given the observation of a spike on another. The spike-triggered PDFs quantified the strength, temporal delay, and temporal precision of correlated activity across electrodes. Nearby cells showed higher levels of correlation at short delays, whereas distant cells showed lower levels of correlation, which tended to occur at longer delays. We found that functional space built based on the strength of pairwise correlations predicted the anatomical arrangement of electrodes. Moreover, the correlation profile of electrode pairs during spontaneous activity predicted the “signal” and “noise” correlations during sensory stimulation. Finally, mutual information analyses revealed that neurons with stronger correlations to the network during spontaneous activity, conveyed higher information about the sensory stimuli in their evoked response. Given the 400-μm-distance between adjacent electrodes, our functional quantifications unravel the spatiotemporal dynamics of activity among nearby and distant cortical columns

Survey on Relationship between Goal Orientation and Learning Strategies with Academic Stress in University Students

AbstractThis study examine the relationship between goal orientation and learning strategies with academic stress in university students(150 male and 150 female) which were selected among 4 college by cluster sampling method. Goal orientation questionnaire (Button, Mathieu and Zajac, 1996) and learning strategies questionnaire (Pintrich and Degroot, 1990) and academic stress questionnaire (Gadzella, 1991) were used as the research instrument. Finding show that there was a positive meaningful relationship between learning goal orientation with learning strategies (cognitive and met cognitive) and academic stress. Also there was negative meaningful correlation between performance goal orientation and learning strategies (cognitive and Meta cognitive). These finding also reveals that learning strategies (cognitive and Meta cognitive) have negative meaningful correlation with academic stress. Finally findings displays that academic stress is predictable through linear regression of goal orientation component and learning strategies. So totally these variables were explained 9/6 percent of the variance of academic stress