scholarly journals The selfing syndrome overshadows other differences when comparing fitness across Capsella species

2020 ◽  
Author(s):  
Marion Orsucci ◽  
Theofilos Vanikiotis ◽  
Maria Guerrina ◽  
Tianlin Duan ◽  
Sylvain Glémin ◽  
...  
Keyword(s):  
Life History Traits ◽  
Northern Europe ◽  
Southern Europe ◽  
Deleterious Mutations ◽  
Short Term ◽  
Individual Fitness ◽  
Self Fertilization ◽  
Outcrossing Species ◽  
Selfing Syndrome ◽  
Better Than

SUMMARYSelf-fertilization has recurrently evolved from outcrossing. Self-fertilization provides an advantage in the short-term as individuals do not require a mate to reproduce, but self-fertilization is also associated with both decreased genetic diversity and accumulation of weakly deleterious mutations, which could, however, be alleviated in polyploid selfers. If pollinators are not limited, individual fitness is thus expected to be higher in outcrossers than in selfers. We measured several life history traits in four Capsella species under two different treatments (disturbed and undisturbed) to assess the effects of mating system and ploidy level on reproductive, vegetative and phenological traits. The experiment was carried out outdoor in Northwest Greece, within the range of the obligate outcrossing species, C. grandiflora, so it could be naturally pollinated and its fitness directly compared to that of its self-fertilizing relatives. Disturbance of the environment did not affect the phenotype in any of the four species. However, for most traits the obligate outcrossing species performed better than all selfing ones. In contrast, polyploidy did not seem to confer an advantage in terms of survival or reproduction compared to diploidy. Finally, plants from Asia and northern Europe had lower performances than accessions from southern Europe and the Middle-East.

scholarly journals A Novel LSTM Model with Interaction Dual Attention for Radar Echo Extrapolation

2021 ◽  
Vol 13 (2) ◽  
pp. 164
Author(s):  
Chuyao Luo ◽  
Xutao Li ◽  
Yongliang Wen ◽  
Yunming Ye ◽  
Xiaofeng Zhang
Keyword(s):  
Short Term Memory ◽  
Weather Forecast ◽  
Vital Role ◽  
Data Sets ◽  
Short Term ◽  
Learning Techniques ◽  
Radar Echo ◽  
Hidden States ◽  
Better Than

The task of precipitation nowcasting is significant in the operational weather forecast. The radar echo map extrapolation plays a vital role in this task. Recently, deep learning techniques such as Convolutional Recurrent Neural Network (ConvRNN) models have been designed to solve the task. These models, albeit performing much better than conventional optical flow based approaches, suffer from a common problem of underestimating the high echo value parts. The drawback is fatal to precipitation nowcasting, as the parts often lead to heavy rains that may cause natural disasters. In this paper, we propose a novel interaction dual attention long short-term memory (IDA-LSTM) model to address the drawback. In the method, an interaction framework is developed for the ConvRNN unit to fully exploit the short-term context information by constructing a serial of coupled convolutions on the input and hidden states. Moreover, a dual attention mechanism on channels and positions is developed to recall the forgotten information in the long term. Comprehensive experiments have been conducted on CIKM AnalytiCup 2017 data sets, and the results show the effectiveness of the IDA-LSTM in addressing the underestimation drawback. The extrapolation performance of IDA-LSTM is superior to that of the state-of-the-art methods.

scholarly journals Temporal mixture ensemble models for probabilistic forecasting of intraday cryptocurrency volume

2021 ◽  
Author(s):  
Nino Antulov-Fantulin ◽  
Tian Guo ◽  
Fabrizio Lillo
Keyword(s):  
Econometric Models ◽  
Gradient Boosting ◽  
Point Estimate ◽  
Order Book ◽  
Probabilistic Forecasting ◽  
Short Term ◽  
Ensemble Models ◽  
Gradient Boosting Machine ◽  
Different Sources ◽  
Better Than

AbstractWe study the problem of the intraday short-term volume forecasting in cryptocurrency multi-markets. The predictions are built by using transaction and order book data from different markets where the exchange takes place. Methodologically, we propose a temporal mixture ensemble, capable of adaptively exploiting, for the forecasting, different sources of data and providing a volume point estimate, as well as its uncertainty. We provide evidence of the clear outperformance of our model with respect to econometric models. Moreover our model performs slightly better than Gradient Boosting Machine while having a much clearer interpretability of the results. Finally, we show that the above results are robust also when restricting the prediction analysis to each volume quartile.

scholarly journals Is pre-fracture functional status better than cognitive level in predicting short-term outcome of elderly hip fracture patients?

2012 ◽  
Vol 1 ◽  
pp. 115-122 ◽  
Author(s):  
Emilija Dubljanin-Raspopović ◽  
Ljiljana Marković-Denić ◽  
Dragana Matanović ◽  
Mirko Grajić ◽  
Nevena Krstić ◽  
...  
Keyword(s):  
Hip Fracture ◽  
Functional Status ◽  
Cognitive Level ◽  
Short Term ◽  
Term Outcome ◽  
Short Term Outcome ◽  
Better Than

The influence of self-fertilization and pairing on life-history traits in the freshwater snail Bulinus forskalii (Gastropoda, Planorbidae)

Acta Tropica ◽  
2000 ◽  
Vol 76 (2) ◽  
pp. 159-167 ◽  
Author(s):  
Flobert Njiokou ◽  
Jean Bosco Mouafo ◽  
Félicité Teukeng ◽  
Thomas Njine ◽  
Albert Same Ekobo ◽  
...  
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Freshwater Snail ◽  
Self Fertilization

The Relationship between Goal Proximity and Specificity in Bowling: A Field Experiment

1990 ◽  
Vol 4 (2) ◽  
pp. 145-154 ◽  
Author(s):  
Steven H. Frierman ◽  
Robert S. Weinberg ◽  
Allen Jackson
Keyword(s):  
Goal Setting ◽  
Repeated Measures ◽  
Questionnaire Data ◽  
Short Term ◽  
Level Of Confidence ◽  
Goal Condition ◽  
Main Effect ◽  
The Relationship ◽  
Better Than

The purpose of this investigation was twofold: to determine if individuals who were assigned specific, difficult goals perform better than those assigned “do your best” goals, and to examine the importance of goal proximity (longterm vs. short-term) on bowling performance. Subjects were 72 students enrolled in two beginning bowling courses at a 4-year university. They were matched according to baseline bowling averages and then randomly assigned to one of four goal-setting conditions. A 4 × 5 (Goal Condition × Trials) ANOVA with repeated measures on the last factor revealed a significant goal condition main effect, with the long-term goal group improving more than the do-your-best group. No other performance comparisons reached significance. Questionnaire data revealed that subjects in all three numerical goal conditions rated their level of confidence significantly higher than the do-your-best goal group in Week 1, but the long-term goal group displayed a significantly higher level of confidence than the other three goal groups in Week 4. All other questions indicated that all groups tried hard and were committed to and accepted their goals.

School Phobia: A Therapeutic Trial with Clomipramine and Short-Term Outcome

1981 ◽  
Vol 138 (2) ◽  
pp. 110-118 ◽  
Author(s):  
T. Berney ◽  
I. Kolvin ◽  
S. R. Bhate ◽  
R. F. Garside ◽  
J. Jeans ◽  
...  
Keyword(s):  
School Refusal ◽  
Therapeutic Trial ◽  
Short Term ◽  
Neurotic Disorder ◽  
Double Blind ◽  
Term Outcome ◽  
School Phobia ◽  
Short Term Outcome ◽  
Rapid Relief ◽  
Better Than

SummaryA double-blind trial failed to demonstrate any significant short-term effects of clomipramine in doses recommended for use in general practice (in addition to the usual range of psychotherapeutic help) in the treatment of children with school refusal and neurotic disorder. Patterns of improvement were also studied for the sample as a whole irrespective of treatment. Neither age nor sex were significantly related to improvement, except on one behavioural measure where girls initially did better than boys. In addition, it was found that there was a rapid relief of depression but neurotic symptomatology tended to persist.

Effect of Aging on Acquisition and Short-Term Retention of a Motor Skill

1978 ◽  
Vol 47 (3) ◽  
pp. 993-994 ◽  
Author(s):  
Mark H. Anshel
Keyword(s):  
Motor Skill ◽  
Age Groups ◽  
Young Group ◽  
Elderly Subjects ◽  
Short Term ◽  
Term Retention ◽  
Better Than

26 elderly ( M = 74.2 yr.) and 26 younger subjects ( M = 23.4 yr.) were compared for their ability to learn and retain a novel motor skill (limb repositioning). Both age groups demonstrated significant improvement in performance, but elders gained statistically significantly better than younger subjects. The young group, however, was significantly superior to elders in terms of performance across trials. No significant differences between the age groups were noted on motor short-term retention trials. Elderly subjects did not retain more or less than younger participants.

What money can’t buy: an argument against paying people to get vaccinated

2021 ◽  
pp. medethics-2021-107235
Author(s):  
Nancy S Jecker
Keyword(s):  
Best Practices ◽  
Economic Conditions ◽  
Vaccine Hesitancy ◽  
Short Term ◽  
Healthy Communities ◽  
Good Citizenship ◽  
Mutant Strains ◽  
The Cost ◽  
Better Than

This paper considers the proposal to pay people to get vaccinated against the SARS-CoV-2 virus. The first section introduces arguments against the proposal, including less intrusive alternatives, unequal effects on populations and economic conditions that render payment more difficult to refuse. The second section considers arguments favouring payment, including arguments appealing to health equity, consistency, being worth the cost, respect for autonomy, good citizenship, the ends justifying the means and the threat of mutant strains. The third section spotlights long-term and short-term best practices that can build trust and reduce ‘vaccine hesitancy’ better than payment. The paper concludes that people who, for a variety of reasons, are reluctant to vaccinate should be treated like adults, not children. Despite the urgency of getting shots into arms, we should set our sights on the long-term goals of strong relationships and healthy communities.

The Impact of Emergency Surgery versus Self-expanding Metallic Stents on Anal Function and Quality of Life in Patients with Complete Obstructing Left-sided Colon Cancer

2021 ◽  
Author(s):  
GanBin Li ◽  
Tao Yu ◽  
Hao-Yu Zhang ◽  
Zhen-Jun Wang ◽  
Guang-Hui Wei ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Colon Cancer ◽  
Regression Analysis ◽  
Short Term ◽  
Anal Function ◽  
Eortc Qlq C30 ◽  
Eortc Qlq ◽  
Better Than

Abstract Background: Emergence surgery (ES) and self-expanding metallic stents (SEMS) are traditional approaches for complete obstructing left-sided colon cancer. A strategy of “stents-chemotherapy-surgery” was applied in our center recently. Studies assessing the anal function and quality of life of patients with complete obstructing left-sided colon cancer are still lacking.Methods: Patients with complete obstructing left-sided colon cancer were included, and three treatment strategies were used, including ES, SEMS, and SEMS followed by neoadjuvant chemotherapy (NAC) for patients with complete obstructing left-sided colon cancer. The Wexner, Vaizey, and low anterior resection syndrome (LARS) scores were used to assess anal function and the EORTC QLQ C30 score was used to assess quality of life. Logistic regression analysis was used to detect risk factors affecting short-term anal function of patients.RESULTS: The Wexner scores were similar among the groups during the follow-up period. The Vaizey (H=18.415, P=0.001) and LARS scores (H=3.660, P=0.04) both revealed that anal function among patients receiving SEMS and NACwas significantly better than patients who underwent ES at the 1-month post-operative follow-up evaluation; no significant difference existed at the 6- and 12-month follow-up evaluations. The EORTC QLQ C30 score revealed that social function of patients receiving SEMS and NAC was also significantly better than patients undergoing ES (H=7.035, P=0.03). Logistic regression analysis suggested that a one-stage stoma in an emergent setting is an independent risk factor for short-term reduction of anal function among patients with complete obstructing left-sided colon cancer (OR=5.238, 95% CI: 1.569~17.484, P=0.007).Conclusion: Compared to ES, SEMS might be able to improve the quality of life and short-term anal function in patients with complete obstructing left-sided colon cancer.

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