The effect of worry and rumination on cognitive abilities with considering role of mediating role of emotional intelligence

Background and aims: The cognitive abilities were included functions such as planning, attention, response inhibition, problem solving and cognitive flexibility. The aim of the present study was to investigate effects of worry and rumination on cognitive abilities based on emotional intelligence. Methods: The present study was a correlational and cross-sectional research. For this purpose, from the statistical population of the urmia University students, 340 were selected by multi-stage cluster random sampling. Then, the worry, rumination, emotional intelligence and cognitive abilities questionnaire were distributed among research participants to respond. Collected data were analyzed by using descriptive and correlational indicators, and structural equation modeling. Results: Results indicated that there is a significant negative correlation between worry and rumination and a positive correlation between emotional intelligence with cognitive abilities. Also, path analysis model indicated mediating role of emotional intelligence between worry and rumination with cognitive abilities. Conclusion: The results support the hypothesis that worry and rumination lead to disruption of cognitive abilities and high emotional intelligence can have a moderating role in this regard

Scheduling Packets with Values and Deadlines in Size-bounded Buffers

Motivated by providing quality-of-service differentiated services in the Internet, we consider buffer management algorithms for network switches. We study a multi-buffer model. A network switch consists of multiple size-bounded buffers such that at any time, the number of packets residing in each individual buffer cannot exceed its capacity. Packets arrive at the network switch over time; they have values, deadlines, and designated buffers. In each time step, at most one pending packet is allowed to be sent and this packet can be from any buffer. The objective is to maximize the total value of the packets sent by their respective deadlines. A 9.82-competitive online algorithm has been provided for this model (Azar and Levy. SWAT 2006), but no offline algorithms have been known yet. In this paper, We study the offline setting of the multi-buffer model. Our contributions include a few optimal offline algorithms for some variants of the model. Each variant has its unique and interesting algorithmic feature. These offline algorithms help us understand the model better in designing online algorithms.Comment: 7 page

Investigation of correlation of the variations in land subsidence (detected by continuous GPS measurements) and methodological data in the surrounding areas of Lake Urmia

Lake Urmia, a salt lake in the north-west of Iran, plays a valuable role in the environment, wildlife and economy of Iran and the region, but now faces great challenges for survival. The Lake is in immediate and great danger and is rapidly going to become barren desert. As a result, the increasing demands upon groundwater resources due to expanding metropolitan and agricultural areas are a serious challenge in the surrounding regions of Lake Urmia. The continuous GPS measurements around the lake illustrate significant subsidence rate between 2005 and 2009. The objective of this study was to detect and specify the non-linear correlation of land subsidence and temperature activities in the region from 2005 to 2009. For this purpose, the cross wavelet transform (XWT) was carried out between the two types of time series, namely vertical components of GPS measurements and daily temperature time series. The significant common patterns are illustrated in the high period bands from 180–218 days band (~6–7 months) from September 2007 to February 2009. Consequently, the satellite altimetry data confirmed that the maximum rate of linear trend of water variation in the lake from 2005 to 2009, is associated with time interval from September 2007 to February 2009. This event was detected by XWT as a critical interval to be holding the strong correlation between the land subsidence phenomena and surface temperature. Eventually the analysis can be used for modeling and prediction purposes and probably stave off the damage from subsidence phenomena

Statistical mechanics of budget-constrained auctions

Finding the optimal assignment in budget-constrained auctions is a combinatorial optimization problem with many important applications, a notable example being the sale of advertisement space by search engines (in this context the problem is often referred to as the off-line AdWords problem). Based on the cavity method of statistical mechanics, we introduce a message passing algorithm that is capable of solving efficiently random instances of the problem extracted from a natural distribution, and we derive from its properties the phase diagram of the problem. As the control parameter (average value of the budgets) is varied, we find two phase transitions delimiting a region in which long-range correlations arise.Comment: Minor revisio

Biomassa e atividade microbiana do solo sob pastagem em sistemas de monocultura e silvipastoril.

A biomassa microbiana é um importante componente do solo que contribui para manutenção do ecossistema de pastagens, principalmente em solos tropicais. Neste sentido, o objetivo do trabalho foi avaliar a biomassa e atividade microbiana do solo sob pastagem em sistemas de monocultura de pasto de Brachiaria brizantha cv. Marandu, e em sistema silvipastoril formado por pasto e coqueiros (Cocos nucifera)

A Cost-Minimization Analysis of Day-Care Versus in-Patient Surgery for Five Most Common General Surgical Procedures

Objective: This study aimed to compare costs of Day-care versus in-patient surgery for five most common general surgical proce-dures in a general hospital in Iran. Methods: In this retrospective study the records of all patients who underwent five most common general surgical operations (in-cluding Hernia, Hemorrhoid, Fistula, Pilonidal Sinus and Varicocele) between March 2011 and March 2013 were reviewed. The data about costs of these procedures was collected by a checklist, designed by the authors, one year before and one year after establishing the Day-Care ward in the hospital. The checklist was designed on the basis of 14 financial items related to surgical patients. All costs were measured from the provider's perspective. Results: The results of this study showed that after implementing day-care surgery ward, inpatient care costs, such as medi-cine/drugs, physician visits, medical consumable, personnel and hotel, reduced significantly per each procedure. However, the costs directly associated with each surgery, such as drugs and consumable, surgeon's wage and anesthesia costs, between these two periods was not significantly different. The highest amount of savings was related to the personnel costs, with 997,000 IRR reductions. On average, total cost of each procedure was reduced by 2,031,358 IRR after implementation of day-care ward. Conclusion: The findings from this study demonstrate that day-care surgery is a cost saving method compared to in-patient surgery for five most common general surgical procedures. It is recommended that hospital managers consider establishing day-care ward and conducting surgical procedures, in particular elective general surgical procedures, in this regimen, to decrease hospital costs and to make hospital beds free, for other patients who are more in need of specialized medical and nursing skills

Características do pasto de capim-marandu irrigado sob sistemas de monocultura e silvipastoril em duas condições de pastejo.

Objetivou-se avaliar a altura, a massa de forragem e composição morfológica do pasto de capim Brachiaria brizantha cv. Marandu irrigado sob sistemas de monocultura e silvipastoril formado por coqueiros (Cocos nucifera) e vacas leiteiras, em duas condições de pastejo

Examining leptogenesis with lepton flavor violation and the dark matter abundance

Within a supersymmetric (SUSY) type-I seesaw framework with flavor-blind universal boundary conditions, we study the consequences of requiring that the observed baryon asymmetry of the Universe be explained by either thermal or non-thermal leptogenesis. In the former case, we find that the parameter space is very constrained. In the bulk and stop-coannihilation regions of mSUGRA parameter space (that are consistent with the measured dark matter abundance), lepton flavor-violating (LFV) processes are accessible at MEG and future experiments. However, the very high reheat temperature of the Universe needed after inflation (of about 10^{12} GeV) leads to a severe gravitino problem, which disfavors either thermal leptogenesis or neutralino dark matter. Non-thermal leptogenesis in the preheating phase from SUSY flat directions relaxes the gravitino problem by lowering the required reheat temperature. The baryon asymmetry can then be explained while preserving neutralino dark matter, and for the bulk or stop-coannihilation regions LFV processes should be observed in current or future experiments.Comment: 20 pages, 5 figures, 1 tabl