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Revealing correlation patterns of individual location activity motifs between workdays and day-offs using massive mobile phone data

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COMPUTERS ENVIRONMENT AND URBAN SYSTEMS 2021年 89卷 101682-101682页

作者： Xiong, Qiangqiang Liu, Yaolin Xie, Peng Wang, Yiheng Liu, Yanfang Wuhan Univ Sch Resource & Environm Sci 129 Luoyu Rd Wuhan 430079 Peoples R China Wuhan Univ Key Lab Geog Informat Syst Minist Educ 129 Luoyu Rd Wuhan 430079 Peoples R China Wuhan Univ Collaborat Innovat Ctr Geospatial Informat Techno 129 Luoyu Rd Wuhan 430079 Peoples R China Shandong Univ Technol Sch Civil & Architectural Engn 266 Xincun West Rd Zibo 255000 Peoples R China

Recently, people are increasingly interested in understanding broader and longer-term individual activity-travel behaviors across days or even weeks. However, the relationship of individual daily activity-travel behaviors over multi-days only remains partially revealed, especially between workdays and day-offs. Thus, we develop an effective framework to extract individual daily activity-travel patterns from massive mobile phone network data on basis of location activity motifs (LAMs), which are beneficial to combining the locations, activities, and trips in daily activity-travel behaviors. We then discover that the modified number of LAMs over time conforms well to the classic exploration and preferential return (EPR) model after excluding the influence of the number of trips, which reproduces the human activity-travel behavior characteristics on daily scale and indicates that the complex relationship of LAMs exists between workdays and day-offs. Furthermore, we emphasize three categories of correlation patterns while the relationship of LAMs between workdays and day-offs is instantiated using association rules mining algorithm. Ultimately, the regular individual differences and obvious spatial heterogeneity reveal the formation mechanism of correlation patterns. These empirical results contribute to develop different but related transportation strategies between workdays and day-offs by understanding individual daily activity-travel behaviors.

关键词： Individual travel trajectory Location activity motifs correlation patterns Mobile phone network data Workdays and day-offs travel

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correlation patterns among floral traits in Cleome viscosa L., a sexually polymorphic species

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CURRENT SCIENCE 2015年第4期109卷 790-798页

作者： Saroop, Shveta Kaul, Veenu Univ Jammu Dept Bot Jammu 180006 India

Cleome viscosa L., a multipurpose species, is reproductively versatile exhibiting variation in the sex of its flowers. Being predominantly andromonoecious, few plants occasionally exhibit functional monoecy. Andromonoecy is distinguished by the production of hermaphrodite and staminate flowers, while formation of pistillate, male and other intermediate flower types leads to functional monoecy. Size variation in these sexes is equally prevalent. Size dimorphy in all the flower types leads to significant differences in almost all the morphological features. Overall 12 different flower types thus distinguished were analysed for different morphological traits. The data generated were subjected to correlation analyses to determine the extent of relationship between them, and thereupon reflect on the mechanism of their selection in flowers of different sexes and sizes. Despite male fitness traits being at greater advantage in all flower types, female fitness is equally selected in hermaphrodites and exclusively in pistillate flowers. Others with staminodes show mixed fitness. A critical analysis of the morphological data and their correlations suggests that different pairs of traits in each flower type are evolved in ways unique to them and to maximize their functional potential. Natural selection is thus operating through differential correlation patterning and is probably driving the evolution of these flower types.

关键词： Cleome viscosa correlation patterns floral traits hermaphrodite

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correlation between Lunar Phases and Rainfall patterns in Mexico

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ATMOSPHERE 2024年第7期15卷 746页

作者： Avila-Carrazco, Juan Israel Villalobos-De Alba, Angel Alfonso Olvera-Olvera, Carlos Alberto De La Rosa-Vargas, Jose I. Gutierrez-Banuelos, Hector Solis-Sanchez, Luis Octavio Villagrana-Barraza, Santiago Lopez-Martinez, Manuel de Jesus Ortiz-Esquivel, Diana Isabel Diaz-Florez, German Univ Autonoma Zacatecas Unidad Acad Ingn Elect Campus Siglo 21Carretera Zacatecas Guadalajara Ki Ejido La Escondida 98160 Zacatecas Mexico Univ Autonoma Zacatecas Unidad Acad Ingn 1 Zacatecas 98068 Mexico Univ Autonoma Zacatecas Unidad Acad Med Vet & Zootecnia Zacatecas 98500 Mexico

In this study, daily historical records from Mexican weather stations across the country were classified according to corresponding Moon phases at the time of rainfall occurrence: New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Last Quarter, and Waning Crescent. Out of the 5839 Mexican weather stations analyzed, 2412 met the specified data quality standards, which included a historical daily record period ranging from 30 to 51 years (1960-2011) and a maximum tolerance of 20% missing data. correlation behavior between Moon phases and historical cumulative rainfall in Mexico was identified at two levels: general and particular. At the general level, the total historical cumulative rainfall by Moon phase was quantified. At the particular level, the correlation patterns between the Moon phases and the highest and lowest historical cumulative rainfall were identified. The results showed that the historical cumulative rainfall was highest at 17.24% during the New Moon and lowest at about 10.01% on average during the Waxing Crescent, First Quarter, and Waning Crescent phases (with 9.64% as the lowest value). During the Waxing Gibbous, Full Moon, and Waning Gibbous phases, rainfall remained at average values of approximately 13.18%. At 89.09% of the weather stations, the rainiest Moon phase was New Moon, and at 56.05%, the least rainy was Waning Crescent. In a few geographical areas, there are clearly defined patterns, which is atypical, given that in other geographical areas, the patterns are typically not so evident. This work demonstrates remarkable and strong correlation behavior between Moon phases and historical cumulative rainfall in Mexico.

关键词： rainfall Moon phase weather stations Mexican territory correlation patterns

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A nonparametric random effects model for the valuation of forest recreation services: An application to forest sites in Tuscany, Italy

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AUSTRALIAN JOURNAL OF AGRICULTURAL AND RESOURCE ECONOMICS 2024年第2期68卷 229-252页

作者： Pellegrini, Andrea Lombardi, Ginevra Virginia Scarpa, Riccardo Rose, John M. Univ Sydney Inst Transport & Logist Studies Business Sch Sustainable Mobil & Accessibil Sydney NSW Australia Univ Florence Dept Econ & Management Florence Italy Univ Durham Business Sch Durham England Univ Waikato Waikato Management Sch Dept Econ Hamilton New Zealand Univ Verona Dept Business Econ Verona Italy Univ Sydney Inst Transport & Logist Studies Business Sch Sustainable Transport Futures Sydney NSW Australia

This study assesses individuals' preferences for the use of forest sites for recreational purposes by means of the logit-mixed logit (LML) model. The appeal of the LML is that the analyst does not need to assume any specific functional form for the mixing distributions of random preferences. The empirical analysis generates a data-driven nonparametric representation of individuals' preference heterogeneity. We apply this approach to data collected using an unlabelled discrete choice experiment (DCE), consisting of three recreational options, two of which are in two hypothetical forest sites. Forest destinations are described by means of six attributes: forest type, signposting, hiking time, access to rivers or lakes, wildlife watch hides for visitors and cost of access. The empirical findings reveal that the signpost for each trail is the attribute for which respondents are on average willing to pay the most (6.565euro). Further evidence suggests that respondents have strong positive preferences for those forest sites that offer amenities such as wildlife watch hides and access to rivers or lakes. Finally, the histograms derived from the semi-parametric LML estimation reveal multimodality of random taste amongst respondents for different hypothetical forest sites.

关键词： correlation patterns discrete choice experiment forest recreation sites multimodal and asymmetric mixing distributions nonparametric distributions willingness to pay

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Assessment of exposure to pesticide mixtures in five European countries by a harmonized urinary suspect screening approach

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INTERNATIONAL JOURNAL OF HYGIENE AND ENVIRONMENTAL HEALTH 2023年 248卷 114105-114105页

作者： Ottenbros, Ilse Lebret, Erik Huber, Carolin Lommen, Arjen Antignac, Jean-Philippe Cupr, Pavel Sulc, Libor Mikes, Ondrej Szigeti, Tamas Kozepesy, Szilvia Martinsone, Inese Martinsone, Zanna Akulova, Lasma Pardo, Olga Fernandez, Sandra F. Coscolla, Clara Pedraza-Diaz, Susana Krauss, Martin Debrauwer, Laurent Wagner, Kevin Nijssen, Rosalie Mol, Hans Vitale, Chiara Maria Klanova, Jana Molina, Borja Garlito Leon, Nuria Vermeulen, Roel Luijten, Mirjam Vlaanderen, Jelle Univ Utrecht Inst Risk Assessment Sci Yalelaan 2 NL-3584 CM Utrecht Netherlands Natl Inst Publ Hlth & Environm RIVM Ctr Sustainabil Environm & Hlth Antonie van Leeuwenhoeklaan 9 NL-3721 MA Bilthoven Netherlands Natl Inst Publ Hlth & Environm RIVM Ctr Hlth Protect Antonie van Leeuwenhoeklaan 9 NL-3721 MA Bilthoven Netherlands UFZ Helmholtz Ctr Environm Res Dept Effect Directed Anal Permoserstr 15 D-04318 Leipzig Germany Goethe Univ Frankfurt Biologicum Inst Ecol Divers & Evolut Campus RiedbergMax Von Laue Str 13 D-60438 Frankfurt Germany Wageningen Food Safety Res Akkermaalsbos 2 NL-6708 WB Wageningen Netherlands LABERCA Oniris INRAE F-44300 Nantes France Masaryk Univ Fac Sci RECETOX Kotlarska 2 Brno 61137 Czech Republic Natl Publ Hlth Ctr Albert Florian Ut 2-6 H-1097 Budapest Hungary Riga Stradins Univ Lab Hyg & Occupat Dis Riga Latvia Fdn Promot Hlth & Biomed Res Valencia Reg Ave Catalunya 21 Valencia Spain Inst Salud Carlos III Natl Ctr Environm Hlth Majadahonda Spain Paul Sabatier Univ Toulouse Univ Toxalim Res Ctr Food Toxicol INRAE UMR 1331ENVTINP Purpan F-31027 Toulouse France Natl Infrastruct Metabol & Fluxom MetaboHUB Metatoul AXIOM Platform Toulouse France Univ Jaume 1 Res Inst Pesticides & Water IUPA Environm & Publ Hlth Analyt Chem Ave Sos Baynat S-N Castellon de La Plana 12071 Spain Univ Valencia Dept Analyt Chem Doctor Moliner 50 Burjassot 46100 Spain Publ Hlth Lab Valencia Ave Catalunya 21 Valencia 46020 Spain

Humans are exposed to a mixture of pesticides through diet as well as through the environment. We conducted a suspect-screening based study to describe the probability of (concomitant) exposure to a set of pesticide profiles in five European countries (Latvia, Hungary, Czech Republic, Spain and the Netherlands). We explored whether living in an agricultural area (compared to living in a peri-urban area), being a a child (compared to being an adult), and the season in which the urine sample was collected had an impact on the probability of detection of pesticides (-metabolites). In total 2088 urine samples were collected from 1050 participants (525 parent-child pairs) and analyzed through harmonized suspect screening by five different laboratories. Fourty pesticide biomarkers (either pesticide metabolites or the parent pesticides as such) relating to 29 pesticides were identified at high levels of confidence in samples across all study sites. Most frequently detected were biomarkers related to the parent pesticides acetamiprid and chlorpropham. Other biomarkers with high detection rates in at least four countries related to the parent pesticides boscalid, fludioxonil, pirimiphos-methyl, pyrimethanil, clothianidin, fluazifop and propamocarb. In 84% of the samples at least two different pesticides were detected. The median number of detected pesticides in the urine samples was 3, and the maximum was 13 pesticides detected in a single sample. The most frequently co-occurring substances were acetamiprid with chlorpropham (in 62 urine samples), and acetamiprid with tebuconazole (30 samples). Some variation in the probability of detection of pesticides (-metabolites) was observed with living in an agricultural area or season of urine sampling, though no consistent patterns were observed. We did observe differences in the probability of detection of a pesticide (metabolite) among children compared to adults, suggesting a different exposure and/or elimination patterns betwee

关键词： Pesticide exposure Suspect screening Mixtures Co-occurrence correlation patterns HBM4EU

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On spatial prediction of urban air pollution 17

On spatial prediction of urban air pollution

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17th International Conference on Intelligent Environments (IE)

作者： Gryech, Ihsane Ben-Aboud, Yassine Ghogho, Mounir Kobbane, Abdellatif Int Univ Rabat Coll Engn & Architecture TICLab Rabat Morocco Mohammed V Univ Rabat ENSIAS Rabat Morocco Univ Leeds Fac Engn Leeds W Yorkshire England

ISBN: (纸本)9781665403467

Air pollution continues to draw global attention, and still causes adverse environmental issues and health effects. Questions about how air pollution evolves spatially are also still unsolved. Many air quality monitoring stations are deployed in several countries to give insight about air quality. However, it is quite frequent for these stations to go out of order during their long life time. These incidents may lead to a significant loss of pollution data. To mitigate this issue, we propose to leverage spatial correlation between pollution monitoring stations to predict the lost data. To reduce the complexity of the prediction model, for each monitoring station, we identify the best set of other stations to use in the prediction model. correlation-based station selection is shown to outperform distance-based station selection and provides an R-2 above 0.8 when applied to the Airparif datasets.

关键词： Air pollution correlation patterns Spatial prediction Machine learning

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Discovering Alarm correlation Rules for Network Fault Management 18th

Discovering Alarm Correlation Rules for Network Fault Manage...

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18th International Conference on Service-Oriented Computing (ICSOC)

作者： Fournier-Viger, Philippe He, Ganghuan Zhou, Min Nouioua, Mourad Liu, Jiahong Harbin Inst Technol Shenzhen Shenzhen Peoples R China Huawei Noahs Ark Lab Shenzhen Peoples R China Univ Bordj Bou Arreridj El Anceur Algeria

ISBN: (纸本)9783030763527;9783030763510

Fault management is critical to telecommunication networks. It consists of detecting, diagnosing, isolating and fixing network problems, a task that is time-consuming. A promising approach to improve fault management is to find patterns revealing the relationships between network alarms, to then only show the most important alarms to network operators. However, a limitation of current algorithms of this type is that they ignore the network topology. But the network topology is important to understand how alarms propagate on a network. This paper addresses this issue by modeling a real-life telecommunication network as a dynamic attributed graph and then extracting correlation patterns between network alarms called Alarm correlation Rules. Experiments on a large telecommunication network show that interesting patterns are found that can greatly compress the number of alarms presented to network operators, which can reduce network maintenance costs.

关键词： Fault management Dynamic graph correlation patterns

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Systemic risk and spatiotemporal dynamics of the consumer market of China

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PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS 2017年 473卷 188-204页

作者： Wang, Minggang Tian, Lixin Xu, Hua Li, Weiyu Du, Ruijin Dong, Gaogao Wang, Jie Gu, Jiani Nanjing Normal Univ Sch Math Sci Nanjing 210042 Jiangsu Peoples R China Nanjing Normal Univ Dept Math Taizhou Coll Taizhou 225300 Jiangsu Peoples R China Jiangsu Univ Energy Dev & Environm Protect Strategy Res Ctr Zhenjiang 212013 Jiangsu Peoples R China

The consumer price index (CPI) contains rich information of the consumer market, in order to characterize the essential characteristics of the consumer market of China, a novel method by using complex network theory is proposed to visualizing the evolution and transformation characteristics of correlated modes among the regional consumer markets. CPI data of 31 provinces and cities of China are selected as sample data. Underlying dynamics of time-evolving correlation networks are revealed. A formula to measure the systemic risk in the consumer market is designed. And the correlation modes transmission network of the regional consumer markets is obtained. Numerical simulations show that the consumer market network has co-movement, group-occurring and small-word property. Different regions played different roles in the consumer market of China. The risk in the consumer market presented a decreasing trend from April 2013 but remain at the high level. Different from the stochastic system, the consumer market of China both has the short-range correlation and the long-range correlation. The strength of correlation modes transmission network basically satisfies a power-law distribution. The correlation modes are transferred into each other conveniently, although the consumer market system is highly complicated. The transformation of the correlation patterns of the regional consumer markets mainly revolves around three core correlation modes and each transformation needs to undergo 4 non-core modes. (C) 2017 Elsevier B.V. All rights reserved.

关键词： CPI correlation patterns Complex network Systemic risk

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Full genome survey and dynamics of gene expression in the greater amberjack Seriola dumerili

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GIGASCIENCE 2017年第12期6卷 1-13页

作者： Sarropoulou, Elena Sundaram, Arvind Y. M. Kaitetzidou, Elisavet Kotoulas, Georgios Gilfillan, Gregor D. Papandroulakis, Nikos Mylonas, Constantinos C. Magoulas, Antonios Hellen Ctr Marine Res Crete Inst Marine Biol Biotechnol & Aquaculture POB 2214 Iraklion 71003 Crete Greece Oslo Univ Hosp Ulleval Dept Med Genet Norwegian High Throughput Sequencing Ctr Kirkeveien 166 N-0450 Oslo Norway

Background: Teleosts of the genus Seriola, commonly known as amberjacks, are of high commercial value in international markets due to their flesh quality and worldwide distribution. The Seriola species of interest to Mediterranean aquaculture is the greater amberjack (Seriola dumerili). This species holds great potential for the aquaculture industry, but in captivity, reproduction has proved to be challenging, and observed growth dysfunction hinders their domestication. Insights into molecular mechanisms may contribute to a better understanding of traits like growth and sex, but investigations to unravel the molecular background of amberjacks have begun only recently. Findings: Illumina HiSeq sequencing generated a high-coverage greater amberjack genome sequence comprising 45 909 scaffolds. Comparative mapping to the Japanese yellowtail (Seriola quinqueriadiata) and to the model species medaka (Oryzias latipes) allowed the generation of in silico groups. Additional gonad transcriptome sequencing identified sex-biased transcripts, including known sex-determining and differentiation genes. Investigation of the muscle transcriptome of slow-growing individuals showed that transcripts involved in oxygen and gas transport were differentially expressed compared with fast/normal-growing individuals. On the other hand, transcripts involved in muscle functions were found to be enriched in fast/normal-growing individuals. Conclusion: The present study provides the first insights into the molecular background of male and female amberjacks and of fast-and slow-growing fish. Therefore, valuable molecular resources have been generated in the form of a first draft genome and a reference transcriptome. Sex-biased genes, which may also have roles in sex determination or differentiation, and genes that may be responsible for slow growth are suggested.

关键词： Seriola dumerili RNA-seq genome aquaculture differential expression correlation patterns gender expression pattern

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Centrality and energy dependence of rapidity correlation patterns in relativistic heavy ion collisions

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Chinese Physics C 2011年第3期35卷 259-263页

作者：乐天许明梅吴元芳 Institute of Particle Physics Huazhong Normal University Key Lab of Quark and Lepton Physics (Huazhong Normal University) Ministry of Education

The centrality and energy dependence of rapidity correlation patterns are studied in Au＋Au collisions by using AMPT with string melting, RQMD and UrQMD models. The behaviors of the shortrange correlation （SRC） and the long-range correlation （LRC） are presented clearly by two spatial-position dependent correlation patterns. For centrality dependence, UrQMD and RQMD give similar results as those in AMPT, i.e., in most central collisions, the correlation structure is flatter and the correlation range is larger, which indicates a long range rapidity correlation. A long range rapidity correlation showing up in RQMD and UrQMD implies that parton interaction is not the only source of long range rapidity correlations. For energy dependence, AMPT with string melting and RQMD show quite different results. The correlation patterns in RQMD at low collision energies and those in AMPT at high collision energies have similar structures, i.e. a convex curve, while the correlation patterns in RQMD at high collision energies and those in AMPT at low collision energies show flat structures, having no position dependence. Long range rapidity correlation presents itself at high energy and disappears at low energy in RQMD, which also indicates that long range rapidity correlations may come from some trivial effects, rather than the parton interactions.

关键词： correlation patterns rapidity short-range correlation long-range correlation

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