scholarly journals Analisando a Variabilidade de Estimativas de Acessibilidade por Transporte Público a Partir de Dados de GPS

2019 ◽  
Author(s):  
Carlos Kauê Vieira Braga ◽  
Carlos Felipe Grangeiro Loureiro ◽  
Rafael Henrique Moreas Pereira
Keyword(s):  
Land Use ◽  
Transportation System ◽  
The Other ◽  
Gps Data ◽  
Travel Times ◽  
Integrated Planning ◽  
Transit System ◽  
System P ◽  
Data Source

Accessibility is a key concept in transport and land use integrated planning. General Transit Feed Specification (GTFS) has been used with success as a data source to estimate accessibility in recent years, but it relies on scheduled transit trips to estimate travel times between origin-destination pairs. On the other side, GPS data of a transit system can be used to calculate travel times between stops for each trip that happens in the system, but it can impose methodological/computational challenges and make use of median travel times to reconstruct the GTFS file. Using one month of GPS data from Fortaleza, Brazil, it is analyzed the variability of accessibility using empirical travel times and considering its dispersion. Results show that variability changes in space and between activities, possibly affecting the assessment and proposition of interventions on the transportation system.

scholarly journals Transit OD Generation Based on Information Technology

2012 ◽  
Vol 5 ◽  
pp. 50-55
Author(s):  
Li Bing Chi ◽  
Jian Wang
Keyword(s):  
Information Technology ◽  
Data Access ◽  
Transportation System ◽  
Search Method ◽  
Gps Data ◽  
Ic Card ◽  
Transit System ◽  
Modeling Process ◽  
Transportation Modeling ◽  
Definition Of

Due to development in computer and information technology, data access and collection have becoming more and more convenient. In many cities’ transit system, transit vehicle GPS data and passenger IC card data could be provided. This paper focuses on the method that uses the passenger IC card data (only record once per trip) and transit vehicle GPS data to generate the transit OD matrix. After analyzing the characteristic of transit trips, the author gives the definition of continuity for a transit trip. Based on this definition, this paper then presents a search method to generate the transit OD matrix. The validity of this method has been tested in the modeling process for Zhengzhou city’s comprehensive transportation system. At the end, it is hoped that this research may give a useful lesson for other cities’ transportation modeling practice.

Interrelationships between municipal spatial policy strategy and airport operation and development. Lodz Airport case study

2018 ◽  
Vol 59 (1) ◽  
pp. 65-79
Author(s):  
Katarzyna Nikorowicz-Zatorska
Keyword(s):  
Land Use ◽  
Urban Planning ◽  
Cultural Development ◽  
The Other ◽  
Local Authorities ◽  
Spatial Management ◽  
The One ◽  
Surrounding Areas

Abstract The present paper focuses on spatial management regulations in order to carry out investment in the field of airport facilities. The construction, upgrades, and maintenance of airports falls within the area of responsibility of local authorities. This task poses a great challenge in terms of organisation and finances. On the one hand, an active airport is a municipal landmark and drives local economic, social and cultural development, and on the other, the scale of investment often exceeds the capabilities of local authorities. The immediate environment of the airport determines its final use and prosperity. The objective of the paper is to review legislation that affects airports and the surrounding communities. The process of urban planning in Lodz and surrounding areas will be presented as a background to the problem of land use management in the vicinity of the airport. This paper seeks to address the following questions: if and how airports have affected urban planning in Lodz, does the land use around the airport prevent the development of Lodz Airport, and how has the situation changed over the time? It can be assumed that as a result of lack of experience, land resources and size of investments on one hand and legislative dissonance and peculiar practices on the other, aviation infrastructure in Lodz is designed to meet temporary needs and is characterised by achieving short-term goals. Cyclical problems are solved in an intermittent manner and involve all the municipal resources, so there’s little left to secure long-term investments.

GPS-DERIVED SECULAR VELOCITY FIELD AROUND SANGIHE ISLAND AND ITS IMPLICATION TO THE MOLUCCA SEA SEISMICITY

GEOMATIKA ◽  
2020 ◽  
Vol 26 (2) ◽  
pp. 107
Author(s):  
Leni Sophia Heliani ◽  
Cecep Pratama ◽  
Parseno Parseno ◽  
Nurrohmat Widjajanti ◽  
Dwi Lestari
Keyword(s):  
Surface Displacement ◽  
Active Regions ◽  
Least Square ◽  
The Other ◽  
Gps Data ◽  
West Side ◽  
Active Deformation ◽  
Secular Motion ◽  
Small Change ◽  
Linear Least Square

<p><em>Sangihe-Moluccas region is the most active seismicity in Indonesia. Between 2015 to 2018 there is four M6 class earthquake occurred close to the Sangihe-Moluccas region. These seismic active regions representing active deformation which is recorded on installed GPS for both campaign and continuous station. However, the origin of those frequent earthquakes has not been well understood especially related to GPS-derived secular motion. Therefore, we intend to estimate the secular motion inside and around Sangihe island. On the other hand, we also evaluate the effect of seismicity on GPS sites. Since our GPS data were conducted on yearly basis, we used an empirical global model of surface displacement due to coseismic activity. We calculate the offset that may be contained in the GPS site during its period</em><em>. </em><em>We remove the offset and estimate again the secular motion using linear least square. Hence, in comparison with the secular motion without considering the seismicity, we observe small change but systematically shifting the motion. We concluded the seismicity in the Molucca sea from 2015 to 2018 systematically change the secular motion around Sangihe Island at the sub-mm level. Finally, we obtained the secular motion toward each other between the east and west side within 1 to 5.5 cm/year displacement. </em></p>

Kecakapan Hidup Abad Ke-21 dalam Tokoh Utama Dongeng Jawa Timur Kajian Antropologi Sastra

2020 ◽  
Vol 13 (2) ◽  
pp. 168
Author(s):  
Rian Damariswara
Keyword(s):  
Critical Thinking ◽  
21St Century ◽  
Fairy Tales ◽  
Life Skills ◽  
Fairy Tale ◽  
Good Life ◽  
The Other ◽  
Main Character ◽  
Data Source ◽  
Creativity And Innovation

ABSTRAKTokoh utama dalam dongeng Jawa Timur memiliki sisi lain yang perlu diungkap. Sisi lain tersebut, yakni kecakapan hidup yang dimiliki tokoh utama dalam menyelesaikan masalah yang dihadapinya. Kecakapan hidup tersebut, memiliki relevansi dengan kecakapan hidup di abad ke-21. Jadi, dengan menganalisis kecakapan hidup tokoh utama secara otomatis peneliti dan pembaca dapat mengetahui bahwa tokoh-tokoh dongeng yang terdapat di Jawa Timur memiliki budaya hidup yang baik untuk dijadikan contoh dan motivasi.Untuk mengungkap kecakapan hidup abad ke-21 pada tokoh utama dongeng Jawa Timur menggunakan kajian antropologi sastra.Penelitian ini termasuk deskriptif kualitatif. Sumber data adalah teks dongeng Jawa Timur. Teknik yang digunakan adalah studi dokumenter. Kecakapan hidup abad ke-21 yang ditemukan pada dongeng Jawa Timur sebagai berikut. Pertama, berpikir kritis dan pemecahan masalah. Semua tokoh utama dalam dongeng memiliki pemikiran kritis sehingga dapat memecahkan masalah. Kedua, kreativitas dan inovasi yang ditemukan yakni jenis pengembangan dan sintesis. Inovasi pengembangan yang ditemukan adalah adanya alat bajak sawah dari batu menjadi kayu dan ditarik sapi serta dapat dipergunakan sebagai sarana hiburan. Alat tersebut diberi nama karapan sapi.  Inovasi sintesis adalah menggabungkan segala sesuatu yang dimiliki untuk dijadikan sesuatu yang baru. Seperti pada dongeng Asal Mula Reog Ponorogo,yakni menggabungkan kepala tokoh Singabarong dengan burung merak sehingga dinamakan reog ponorogo. Ketiga, kolaborasi antaranggota dan pemimpin dengan bawahan. Keempat, komunikasi yakni berupa diskusi, pengarahan, berkeluh kesah, dan perintah.Kata kunci: Kecakapan hidup abad ke-21, Tokoh utama, DongengABSTRACTThe main character in the East Java fable has another side that needs to be revealed. The other side, namely the life skills possessed by the main character in solving the problems they face. Life skills, have relevance to 21st century life skills. Therefore, by analyzing the life skills of the main characters automatically the researcher and reader can find out that the fairy tale figures in East Java which have a good life culture to be used as an example and motivation. To uncover 21st century life skills in the main characters of the East Javanese fable, the study of literary anthropology is used. This research is descriptive qualitative. The data source is the text of a fairy tale in East Java. The technique used is documentary study. The 21st century life skills found in the East Java fable are as follows. First, critical thinking and problem solving. All the main characters in fairy tales have critical thinking so they can solve problems. Second, the creativity and innovation found are types of development and synthesis. Development innovation that was found was the existence of a rice plow from stone to wood and pulled by cows and could be used as a means of entertainment. The tool is named Karapan Sapi. Synthesis of innovation is to combine everything that is owned to be something new. As in the fable of Reog Ponorogo, which combines the head of the Singabarong character with a peacock so it is called Reog Ponorogo. Third, collaboration between members and leaders with subordinates. Fourth, communication in the form of discussion, direction, complaints, and orders.Keyword: 21st century life skills, The main character, Fairy tale

Temporal variability of disinfection by-products concentration in urban public water system

2013 ◽  
Vol 14 (4) ◽  
pp. 393-398
Keyword(s):  
Drinking Water ◽  
Water Samples ◽  
Temporal Variability ◽  
Water System ◽  
The Other ◽  
Major Constituent ◽  
System P ◽  
Public Water System ◽  
Drinking Water Samples ◽  
By Products

The occurrence of trihalomethanes (THMs) was studied in the drinking water samples from urban water supply network of Karachi city that served more than 18 million people. Drinking water samples were collected from 58 locations in summer (May-August) and winter (November-February) seasons. The major constituent of THMs detected was chloroform in winter (92.34%) and summer (93.07%), while the other THMs determined at lower concentrations. Summer and winter concentrations of total THMs at places exceed the levels regulated by UEPA (80 μg l-1) and WHO (100 μg l-1). GIS linked temporal variability in two seasons showed significantly higher median concentration (2.5%-23.06%) of THMs compared to winter.

scholarly journals Consistency of causal claims in observational studies: a review of papers published in a general medical journal

BMJ Open ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. e043339
Author(s):  
Camila Olarte Parra ◽  
Lorenzo Bertizzolo ◽  
Sara Schroter ◽  
Agnès Dechartres ◽  
Els Goetghebeur
Keyword(s):  
Medical Journal ◽  
Observational Studies ◽  
The Other ◽  
Research Papers ◽  
General Medical Journal ◽  
Outcome Relationship ◽  
Causal Statement ◽  
Data Source ◽  
Published Research ◽  
Causal Language

ObjectiveTo evaluate the consistency of causal statements in observational studies published in The BMJ.DesignReview of observational studies published in a general medical journal.Data sourceCohort and other longitudinal studies describing an exposure-outcome relationship published in The BMJ in 2018. We also had access to the submitted papers and reviewer reports.Main outcome measuresProportion of published research papers with ‘inconsistent’ use of causal language. Papers where language was consistently causal or non-causal were classified as ‘consistently causal’ or ‘consistently not causal’, respectively. For the ‘inconsistent’ papers, we then compared the published and submitted version.ResultsOf 151 published research papers, 60 described eligible studies. Of these 60, we classified the causal language used as ‘consistently causal’ (48%), ‘inconsistent’ (20%) and ‘consistently not causal’(32%). Eleven out of 12 (92%) of the ‘inconsistent’ papers were already inconsistent on submission. The inconsistencies found in both submitted and published versions were mainly due to mismatches between objectives and conclusions. One section might be carefully phrased in terms of association while the other presented causal language. When identifying only an association, some authors jumped to recommending acting on the findings as if motivated by the evidence presented.ConclusionFurther guidance is necessary for authors on what constitutes a causal statement and how to justify or discuss assumptions involved. Based on screening these papers, we provide a list of expressions beyond the obvious ‘cause’ word which may inspire a useful more comprehensive compendium on causal language.

Recent developments in regional transit for Greater Vancouver

1978 ◽  
Vol 5 (3) ◽  
pp. 334-339
Author(s):  
Brian E. Sullivan
Keyword(s):  
Land Use ◽  
High Rate ◽  
Low Density ◽  
Transit System ◽  
Shopping Centres ◽  
The Future ◽  
Recent Developments ◽  
Trunk Routes ◽  
The City ◽  
Capital Intensive

The transit system serving Greater Vancouver has high ridership and a high rate of growth. Using as a base the well-designed, well-patronized trolleybus grid in the City of Vancouver, an inter-connected suburban bus network has been created, with radial, cross-radial, and local routes meeting on a timed connection basis at suburban shopping centres and other foci. Planners' thoughts for the future include greater emphasis on the micro and macro aspects of land use and relations to transit; the use of capital intensive modes for heavy trunk routes; and the use of various forms of para-transit for low-density and certain feeder applications.

The Enshi funicular

2021 ◽  
Author(s):  
Charles Cayatte ◽  
Arnaud Lemaire
Keyword(s):  
Grand Canyon ◽  
Transportation System ◽  
The Other ◽  
Metal Structures ◽  
Slab Track

<p>Enshi Grand Canyon is one of China's remarkable sites. A one-kilometre-long funicular, carried by steel viaducts on half of the line and a slab track on the other half, will soon be inaugurated to transport visitors with a nearly carbon-free transportation system. These metal structures have unique designs, dictated by the strong constraints of the funicular system and the constraints of accessibility, constructability and transport on this mountainous site. This article presents the main characteristics of these works.</p>

Comparison of Two Common Approaches to Public Transit Service Equity Evaluation

2015 ◽  
Vol 2531 (1) ◽  
pp. 170-179 ◽  
Author(s):  
Alex Karner ◽  
Aaron Golub
Keyword(s):  
Census Data ◽  
Public Transit ◽  
Transit System ◽  
The Public ◽  
Transit Service ◽  
Transit Ridership ◽  
Data Source ◽  
Equity Evaluation ◽  
Equity Effects ◽  
Service Change

Understanding the equity effects of transit service changes requires good information about the demographics of transit ridership. Onboard survey data and census data can be used to estimate equity effects, although there is no clear reason to conclude that these two sources will lead to the same findings. Guidance from the FTA recommends the use of either of these data sources to estimate equity impacts. This study made a direct comparison of the two methods for the public transit system in the Phoenix, Arizona, metropolitan area. The results indicated that although both sources were acceptable for FTA compliance, the use of one or the other could affect whether a proposed service change was deemed equitable. In other words, the outcome of a service change equity analysis could differ as a result of the data source used. To ensure the integrity and meaning of such analyses, FTA should recommend the collection and use of ridership data for conducting service change analyses to supplement approaches that are based on census data.

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