Nonlinear Dynamics Psychology and Life Sciences最新文献_第4页

Roughness as a Fractal Property in Univariate Time Series Data. 单变量时间序列数据中粗糙度的分形性质。

IF 0.9 4区心理学

Nonlinear Dynamics Psychology and Life Sciences Pub Date : 2023-04-01

Matthijs Koopmans

{"title":"Roughness as a Fractal Property in Univariate Time Series Data.","authors":"Matthijs Koopmans","doi":"","DOIUrl":"","url":null,"abstract":"In the analysis of time series data, roughness is sometimes seen as a distinct feature of fractality. This paper seeks to distinguish it from other aspects of that construct (self-affinity and long-range memory processes) and it examines the reliability of the roughness measures currently available, i.e., Gneiting et al.'s (2010) fractal dimension and Marmelat et al.'s (2012) relative roughness. The response of these estimators is evaluated to simulations at varying levels of persistence, as specified by the Hurst exponent, and to the presence or absence of short-range ARMA processes. Four empirical time series datasets are subjected to roughness estimation: the flow of the river Nile, daily recordings of the number of births to teens in the state of Texas, daily school attendance rates at an urban middle school, and unemployment figures provided by the US Department of Labor. Results from the simulation study indicate that persistence levels are faithfully reproduced by both estimation techniques, which also show the (dis)attenuating effects of the short-range dependencies. Analysis of the empirical data indicates that the fractal dimension works best for non-stationary data, while relative roughness is more suitable for stationary data. In the simulations as well as the empirical situation, both estimations reliably identify randomness, and are therefore recommended as goodness of fit measures when time series are analyzed.","PeriodicalId":46218,"journal":{"name":"Nonlinear Dynamics Psychology and Life Sciences","volume":"27 2","pages":"149-168"},"PeriodicalIF":0.9,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9602808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fractal Dynamics in a Whole-Body Dynamic Balance Sport, Slacklining: A Comparison of Novices and Experts. 全身动态平衡运动的分形动力学——滑绳:新手与专家的比较。

IF 0.9 4区心理学

Nonlinear Dynamics Psychology and Life Sciences Pub Date : 2023-01-01

Kentaro Kodama, Hideo Yamagiwa, Kazuhiro Yasuda

{"title":"Fractal Dynamics in a Whole-Body Dynamic Balance Sport, Slacklining: A Comparison of Novices and Experts.","authors":"Kentaro Kodama, Hideo Yamagiwa, Kazuhiro Yasuda","doi":"","DOIUrl":"","url":null,"abstract":"The present study investigated whether fractal dynamics can be observed during single-leg standing on a slackline. We also examined whether the temporal structure differs with skill level. To address these questions, we compared single-leg standing performance between novices (N=5) and experts (N=5) in terms of fractal dynamics in both ankles (i.e., stance and swing legs), center of mass, and head acceleration time series using detrended fluctuation analysis. Participants were required to perform single-leg standing on a slackline. To collect motion data while slacklining, we used a three-dimensional motion capture system and obtained time-series data on the position. We conducted detrended fluctuation analysis on the original acceleration time series and random shuffled time series to examine the fractal dynamics in each body part's fluctuation. Results suggest that experts showed persistent temporal structure in the swinging leg, center of mass, and head fluctuations in the horizontal direction, while that of novices did not differ from random fluctuations. These findings revealed that experts performing a single-leg standing task on a slackline show fractal dynamics. This might reflect their flexible or adaptive exploratory behavior in the performer-environment system and contribute to the dynamic stability of whole-body dynamic balancing.","PeriodicalId":46218,"journal":{"name":"Nonlinear Dynamics Psychology and Life Sciences","volume":"27 1","pages":"15-28"},"PeriodicalIF":0.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10748731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Birth of Novelty: A Causal and Nonlinear Perspective. 新颖性的诞生:一个因果和非线性的视角。

IF 0.9 4区心理学

Nonlinear Dynamics Psychology and Life Sciences Pub Date : 2023-01-01

Mike Unrau

引用次数: 0

The Labor Market with People in It: Personality Traits and Employment Dynamics. 人在其中的劳动力市场:人格特征和就业动态。

IF 0.9 4区心理学

Nonlinear Dynamics Psychology and Life Sciences Pub Date : 2023-01-01

Orlando Gomes, Rui Borges Francisco

{"title":"The Labor Market with People in It: Personality Traits and Employment Dynamics.","authors":"Orlando Gomes, Rui Borges Francisco","doi":"","DOIUrl":"","url":null,"abstract":"Issues pertaining to the organization and efficiency of the labor market and to the dynamics of employment and unemployment have always been at the forefront of the concerns of economists. Typically, such issues are approached through the analysis of the conflicting interests of a representative worker and of a representative firm, each of which intending to maximize the corresponding intertemporal objective function. Much of the research undertaken on this subject neglects the fact that each person is unique and endowed with different personality traits that influence their educational attainment, their ability to access jobs, their productivity while employed, and also their willingness to support, through social welfare mechanisms, those who become unemployed. In this research, we propose a simulation model to approach the dynamics of the labor market. The model conceives an economy populated by a large number of individuals who, over their life cycles, acquire education, search for a job, receive a wage while employed, and access an unemployment benefit while out of work. Because individuals are endowed with different personalities, they experience different degrees of professional success over their life cycles. Such reasoning leads to a labor market aggregate outcome characterized by emergent phenomena, out-of-equilibrium, path dependence, and other features that are characteristic of a complex evolving system. In the proposed setting, the personality of individuals is shaped by taking into account the big five personality traits of psychological analysis, namely openness to experience, conscientiousness, extraversion, agreeableness, and neuroticism.","PeriodicalId":46218,"journal":{"name":"Nonlinear Dynamics Psychology and Life Sciences","volume":"27 1","pages":"61-85"},"PeriodicalIF":0.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10748738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IF 0.9 4区心理学

Nonlinear Dynamics Psychology and Life Sciences Pub Date : 2023-01-01

Ricardo A M Robalo, Ana M F A Diniz, Pedro J M Passos

引用次数: 0

Tears in My Snorkel Mask: An Artist's Love Affair with Nature's Hot Mess. 我的潜水面罩上的眼泪:一个艺术家与大自然的热恋。

IF 0.9 4区心理学

Nonlinear Dynamics Psychology and Life Sciences Pub Date : 2023-01-01

Amy R Roberts

引用次数: 0

Figuration of the Possible: Complexity, Interactive Art, and Social Change. 可能性的形态:复杂性、互动艺术和社会变革。

IF 0.9 4区心理学

Nonlinear Dynamics Psychology and Life Sciences Pub Date : 2022-10-01

Diane Rosen

引用次数: 0

The Effects of Prime Supporters within a College Student's Support Network. 大学生支持网络中主要支持者的作用。

IF 0.9 4区心理学

Nonlinear Dynamics Psychology and Life Sciences Pub Date : 2022-10-01

David M Chan, Michael D Broda, Jeremy Winslow, Quindel Jones, Claire Luce, Hollees A McGinnis, Camie A Tomlinson, Haya Hamid, Joy Ma

{"title":"The Effects of Prime Supporters within a College Student's Support Network.","authors":"David M Chan, Michael D Broda, Jeremy Winslow, Quindel Jones, Claire Luce, Hollees A McGinnis, Camie A Tomlinson, Haya Hamid, Joy Ma","doi":"","DOIUrl":"","url":null,"abstract":"College students face academic and emotional challenges within and outside of the classroom. There is not a unique way to deal with all of these challenges, however obtaining support from other individuals in their network can be an important factor in their success in dealing with these challenges. Exploratory social support network data from 38 undergraduate students were collected and analyzed to find common network structures and examine the relationship between these structures and student characteristics, GPA, perceived social support, and use of other help resources. We found half of the students had what we defined to be a novel network characteristic, prime supporters, which are individuals who provided academic and emotional support to students for both routine and intense academic and emotional problems. We found students with a prime supporter in their social network tended to have higher GPAs and perceived social support than those without a prime supporter. Students with prime supporters also had differences in academic help-seeking behavior. These findings suggest the need for further research on the social networks of college students, particularly the presence of individuals who are providers of multiple sources of support.","PeriodicalId":46218,"journal":{"name":"Nonlinear Dynamics Psychology and Life Sciences","volume":"26 4","pages":"423-440"},"PeriodicalIF":0.9,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33479344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Influence of Spatial Effects on the Dynamics of Solutions in Keynes' Mathematical Model of the Business Cycle. 凯恩斯经济周期数学模型中空间效应对解动力学的影响

IF 0.9 4区心理学

Nonlinear Dynamics Psychology and Life Sciences Pub Date : 2022-10-01

M A Radin, A N Kulikov, D A Kulikov

{"title":"The Influence of Spatial Effects on the Dynamics of Solutions in Keynes' Mathematical Model of the Business Cycle.","authors":"M A Radin, A N Kulikov, D A Kulikov","doi":"","DOIUrl":"","url":null,"abstract":"We consider the special case of the mathematical model of Keynes' business cycle with the spatial interaction. In this model we assume that macroeconomic factors affect a certain geographical region and economic indicators. The dependence occurs on the spatial (geographical) coordinates in addition to the dependence on the temporal evolution, even if the economic subject is externally homogeneous in space. Spatial interaction led us to analyze a system of two differential equations of the 'reaction-diffusion' type, which replaces a system of two ordinary differential equations. This method is often used to analyze the dynamics of complex nonlinear systems and macroeconomic entities. An analysis of such a mathematical model is based on the use of modern methods of the theory of dynamical systems indicate the presence of new nonlinear effects in addition to those used in the traditional version of the Keynes model. We encountered the loss of stability of the homogeneous economic equilibrium state and the occurrence of economic cycles for some values of the parameters while investigating the characteristics of such a system. Meanwhile, another version of instability of a homogeneous economic equilibrium state with a different choice of parameters occurs, which in many cases leads to the appearance of a spatially non-homogeneous equilibrium state, which is characterized by the dependence of the corresponding economic indicators on the spatial (geographical) coordinates of the area in which the assigned macroeconomic entity is located.","PeriodicalId":46218,"journal":{"name":"Nonlinear Dynamics Psychology and Life Sciences","volume":"26 4","pages":"441-463"},"PeriodicalIF":0.9,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33479345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recovery of Nonlinear Heart Rate Variability After Submaximal Exercise in Young Persons With Symptoms of Anxiety and Depression. 有焦虑和抑郁症状的青少年次剧烈运动后非线性心率变异性的恢复

IF 0.9 4区心理学

Nonlinear Dynamics Psychology and Life Sciences Pub Date : 2022-10-01

Cicero Jonas R Benjamim, Yasmim M de Moraes Pontes, Luana B Mangueira, Julio Cesar Pascoaloti-Lima, Guilherme da Silva Rodrigues, Carlos Roberto Bueno, David M Garner, Vitor E Valenti

{"title":"Recovery of Nonlinear Heart Rate Variability After Submaximal Exercise in Young Persons With Symptoms of Anxiety and Depression.","authors":"Cicero Jonas R Benjamim, Yasmim M de Moraes Pontes, Luana B Mangueira, Julio Cesar Pascoaloti-Lima, Guilherme da Silva Rodrigues, Carlos Roberto Bueno, David M Garner, Vitor E Valenti","doi":"","DOIUrl":"","url":null,"abstract":"Prior studies have demonstrated that anxiety and depression explain the increase of adverse cardiovascular events an failure to modulate cardiac activity. This study of the nonlinear heart rate (HR) variability (HRV) behavior can provide additional information concerning the autonomic recovery of HR after exercise. The dynamics of these indices in exercise-mediated situations may reveal other ways to assess HRV recovery after physical effort. We studied nonlinear HRV recovery after submaximal exercise in subjects with higher Hospital Anxiety and Depression Scale (HADS) scores. Sixty-six young adults were recruited, and 50 completed the HADS rating scale to quantify their degree of anxiety and depression for later allocation to a suitable group. After experimental procedures, the final sample involved 20 participants (15 female) who were allocated to the group with low HADS scores (LHADS) and 21 (16 female) to the group with high HADS scores (HHADS). We logged HRV data before and during recovery from submaximal aerobic exercise and analyzed this data using symbolic analysis. Young adults with High HADS scores (HHADS) had a slower recovery of the symbolic analysis of HRV via index 2LV% (two like variations) and 2ULV% (two unlike variations) after aerobic exercise. Participants with higher HADS scores presented delayed nonlinear HRV recovery after submaximal exercise.","PeriodicalId":46218,"journal":{"name":"Nonlinear Dynamics Psychology and Life Sciences","volume":"26 4","pages":"389-401"},"PeriodicalIF":0.9,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33479342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0