A Process-Oriented Spatiotemporal Clustering Method for Complex Trajectories of Dynamic Geographic Phenomena

<p><strong>Abstract.</strong> Considering the critical role of trajectory data in Big Data era for dynamic geographical processes, human behaviour analysis and meteorological prediction, trajectory clustering has attracted growing attention. Many literatures have discussed the spatiot emporal clustering method of simple trajectories (i.e., has no branches, e.g. vehicle trajectories), yet there are few researches for clustering complex trajectories (i.e., has at least one split and/or merger and/or split -merger branch, e.g. ocean eddy trajectories, rainstorm trajectories). For addressing this issue, we propose a Process-Oriented Spatiotemporal Clustering Method (POSCM) for clustering complex trajectory data. The POSCM includes three parts: the first uses the semantic of process-sequence-state to represent the complex trajectories; the second proposes a Hierarchical Similarity Measurement Method (HSMM) to get the similarity between any two complex trajectories; in the last step, the complex trajectories clustering pattern is extracted through density-based clustering algorithm. Experiments on simulated trajectories are used to evaluate the POSCM and demonstrate the advantage by comparing against that of the VF2 algorithm. The POSCM is applied to the sea surface temperature abnormal variations trajectories from January 1950 to December 2017 in the Pacific Ocean. As shown in this case study, some new mined spatiotemporal patterns can provide new references for understanding the behaviours of marine abnormal variations under the background of the global change.</p>

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A Map Spectrum-Based Spatiotemporal Clustering Method for GDP Variation Pattern Analysis Using Nighttime Light Images of the Wuhan Urban Agglomeration

ISPRS International Journal of Geo-Information ◽

10.3390/ijgi6060160 ◽

2017 ◽

Vol 6 (6) ◽

pp. 160 ◽

Cited By ~ 4

Author(s):

Penglin Zhang ◽

Shuaijun Liu ◽

Juan Du

Keyword(s):

Pattern Analysis ◽

Urban Agglomeration ◽

Clustering Method ◽

Variation Pattern ◽

Spatiotemporal Clustering ◽

Nighttime Light ◽

Wuhan Urban Agglomeration

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A Novel Process-Oriented Graph Storage for Dynamic Geographic Phenomena

ISPRS International Journal of Geo-Information ◽

10.3390/ijgi8020100 ◽

2019 ◽

Vol 8 (2) ◽

pp. 100 ◽

Cited By ~ 1

Author(s):

Cunjin Xue ◽

Chengbin Wu ◽

Jingyi Liu ◽

Fenzhen Su

Keyword(s):

Graph Model ◽

Oriented Graph ◽

Spatial Evolution ◽

Edge Structure ◽

Oracle Spatial ◽

Object A ◽

Order Of Magnitude ◽

Process Oriented ◽

Point Line ◽

Dynamic Geographic Phenomena

There exists a sort of dynamic geographic phenomenon in the real world that has a property which is maintained from production through development to death. Using traditional storage units, e.g., point, line, and polygon, researchers face great challenges in exploring the spatial evolution of dynamic phenomena during their lifespan. Thus, this paper proposes a process-oriented two-tier graph model named PoTGM to store the dynamic geographic phenomena. The core ideas of PoTGM are as follows. 1) A dynamic geographic phenomenon is abstracted into a process with a property that is maintained from production through development to death. A process consists of evolution sequences which include instantaneous states. 2) PoTGM integrates a process graph and a sequence graph using a node–edge structure, in which there are four types of nodes, i.e., a process node, a sequence node, a state node, and a linked node, as well as two types of edges, i.e., an including edge and an evolution edge. 3) A node stores an object, i.e., a process object, a sequence object, or a state object, and an edge stores a relationship, i.e., an including or evolution relationship between two objects. Experiments on simulated datasets are used to demonstrate an at least one order of magnitude advantage of PoTGM in relation to relationship querying and to compare it with the Oracle spatial database. The applications on the sea surface temperature remote sensing products in the Pacific Ocean show that PoTGM can effectively explore marine objects as well as spatial evolution, and these behaviors may provide new references for global change research.

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Cultural humility in action: Reflective and process-oriented supervision with Black trainees.

Training and Education in Professional Psychology ◽

10.1037/tep0000284 ◽

2020 ◽

Vol 14 (4) ◽

pp. 277-284

Author(s):

Naadira C. Upshaw ◽

Douglas E. Lewis ◽

Amber L. Nelson

Keyword(s):

Cultural Humility ◽

Process Oriented

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Peningkatan Kemampuan Berpikir Kritis Peserta Didik Pada Materi Termokimia Di Sma Pekanbaru Melalui Penerapan Strategi Pembelajaran Process Oriented Guided Inquiry Learning (POGIL)

Talenta Conference Series Science and Technology (ST) ◽

10.32734/st.v2i2.536 ◽

2019 ◽

Vol 2 (2) ◽

Author(s):

Maria Erna ◽

R. Usman Rery ◽

Wiji Astuti ◽

Sulismayati

Keyword(s):

Critical Thinking ◽

Inquiry Learning ◽

Guided Inquiry ◽

Test Technique ◽

Critical Thinking Ability ◽

High Category ◽

Thinking Ability ◽

Process Oriented ◽

Academic Year ◽

Very High

Penelitian ini dilakukan untuk mengetahui peningkatan kemampuan berpikir kritis siswa pada mata pelajaran Termokimia melalui penerapan strategi Process Oriented Guided Inquiry Learning (POGIL) (POGIL) di kelas 11 SMAN 8 Pekanbaru. Penelitian ini menggunakan One Group Pretest-Posttest Design yang diadakan di SMAN 8 Pekanbaru pada tahun akademik 2017/2018. Objek penelitian adalah XI MIA 1 yang terdiri dari 32 siswa. Pengumpulan data siswa menggunakan teknik tes pretest dan posttest. Keberhasilan pembelajaran dalam meningkatkan kemampuan berpikir kritis siswa ditunjukkan oleh peningkatan kriteria berpikir kritis dari hasil pretest dan posttest yang menganalisis persentase skor berpikir kritis. Hasil penelitian menunjukkan bahwa ada peningkatan kemampuan berpikir kritis siswa. Siswa mengalami peningkatan dari kategori berpikir kritis sangat rendah ke kategori sangat tinggi dengan persentase 15,625%, dari kategori rendah ke kategori sangat tinggi adalah 40,625%, dari kategori rata-rata ke kategori sangat tinggi adalah 9,375%, dari kategori sangat rendah hingga kategori tinggi adalah 12,5%, dan dari kategori rendah ke kategori tinggi adalah 21,875%. Berdasarkan analisis data, dapat disimpulkan bahwa penerapan strategi Process Oriented Guided Inquiry Learning (POGIL) mampu meningkatkan kemampuan berpikir kritis siswa pada mata pelajaran Termokimia di SMAN 8 Pekanbaru. The research was held to determine the improvement of student’s critical thinking ability on Thermochemistry subject through implementation of Process Oriented Guided Inquiry Learning (POGIL) strategy at 11th Grade of SMAN 8 Pekanbaru. This research used One Group Pretest-Posttest Design which held in SMAN 8 Pekanbaru at academic year of 2017/2018. The object of research is XI MIA 1 that consist of 32 students. The data collection of students used test technique which are pretest and posttest. The success of learning in improvement of student’s critical thinking ability is showed by improvement of criteria of critical thinking from pretest and posttest results that analyzed the score percentage of critical thinking. The result of research showed that there was an improvement of student’s critical thinking ability. The students have an increase from the very low category of critical thinking to very high category with percentage of 15,625%, from low category to very high category is 40,625%, from average category to very high category is 9,375%, from very low category to high category is 12,5%, and from low category to high category is 21,875%. Based on data analyze, it can be concluded that implementation of Process Oriented Guided Inquiry Learning (POGIL) strategy is able to improve student’s critical thinking ability on Thermochemistry subject at SMAN 8 Pekanbaru.

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Process Philosophy and Political Liberalism

10.3366/edinburgh/9781474453400.001.0001 ◽

2019 ◽

Author(s):

Daniel A. Dombrowski

Keyword(s):

Political Philosophy ◽

Political Liberalism ◽

Reflective Equilibrium ◽

Process Philosophy ◽

The Political ◽

Nonhuman Animals ◽

Static View ◽

Process Oriented ◽

The Right ◽

Political Right

In this work two key theses are defended: political liberalism is a processual (rather than a static) view and process thinkers should be political liberals. Three major figures are considered (Rawls, Whitehead, Hartshorne) in the effort to show the superiority of political liberalism to its illiberal alternatives on the political right and left. Further, a politically liberal stance regarding nonhuman animals and the environment is articulated. It is typical for debates in political philosophy to be adrift regarding the concept of method, but from start to finish this book relies on the processual method of reflective equilibrium or dialectic at its best. This is the first extended effort to argue for both political liberalism as a process-oriented view and process philosophy/theology as a politically liberal view. It is also a timely defense of political liberalism against illiberal tendencies on both the right and the left.

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