scholarly journals Estimation of the High-Frequency Attenuation Parameter Kappa for the Zagreb (Croatia) Seismic Stations

2020 ◽  
Vol 10 (24) ◽  
pp. 8974
Author(s):  
Davor Stanko ◽  
Snježana Markušić ◽  
Tvrtko Korbar ◽  
Josip Ivančić
Keyword(s):  
High Frequency ◽  
Pannonian Basin ◽  
Epicentral Distance ◽  
Active Faults ◽  
Least Square ◽  
Seismic Zone ◽  
Seismic Stations ◽  
Regional Tectonic ◽  
Surrounding Areas ◽  
The City

The city of Zagreb (Croatian capital) is situated in the contact area of three major regional tectonic units: the SE Alps, NW Dinarides, and Tisza Unit in the southwestern margin of the Pannonian Basin. The Zagreb seismic zone encompasses the Medvednica Mountains and the city of Zagreb with its surrounding areas, which was struck by the strongest instrumentally recorded earthquake (M5.5) on 22 March 2020. The objective of this contribution is the estimation of the high-frequency attenuation spectral parameter kappa (κ) and its local site-specific component for the Zagreb (Croatia) seismic stations to which we were particularly encouraged after the scale of the damage after the Zagreb 2020 earthquake. We tested linear dependence of κ with epicentral distance using traditional linear least square regression, linear regression for data with errors, and constrained model at close distances to estimate near-site attenuation (κ0). Regression-estimated site kappa values at zero-distance are within the range of the uncertainty (±1 standard deviation) with constrained κ0 value as well within the range of existing global κ0 and VS30 (shear wave velocity in the top 30 m) values. Spatial distribution of κ within the Zagreb seismic zone shows that κ is not isotropic and high-frequency attenuation anisotropy is probably affected by local and regional geological variability, regional active faults and a complex tectonic structure in each direction.

scholarly journals A Proposed Framework for Identification of Indicators to Model High-Frequency Cities

2021 ◽  
Vol 10 (5) ◽  
pp. 317
Author(s):  
Ahmad M. Senousi ◽  
Junwei Zhang ◽  
Wenzhong Shi ◽  
Xintao Liu
Keyword(s):  
Urban Studies ◽  
Traffic Congestion ◽  
High Frequency ◽  
Urban Policy ◽  
Low Frequency ◽  
Highway Design ◽  
City Life ◽  
Cultural Affiliation ◽  
Internal Mobility ◽  
The City

A city is a complex system that never sleeps; it constantly changes, and its internal mobility (people, vehicles, goods, information, etc.) continues to accelerate and intensify. These changes and mobility vary in terms of the attributes of the city, such as space, time and cultural affiliation, which characterise to some extent how the city functions. Traditional urban studies have successfully modelled the ‘low-frequency city’ and have provided solutions such as urban planning and highway design for long-term urban development. Nevertheless, the existing urban studies and theories are insufficient to model the dynamics of a city’s intense mobility and rapid changes, so they cannot tackle short-term urban problems such as traffic congestion, real-time transport scheduling and resource management. The advent of information and communication technology and big data presents opportunities to model cities with unprecedented resolution. Since 2018, a paradigm shift from modelling the ‘low-frequency city’ to the so-called ‘high-frequency city’ has been introduced, but hardly any research investigated methods to estimate a city’s frequency. This work aims to propose a framework for the identification and analysis of indicators to model and better understand the concept of a high-frequency city in a systematic manner. The methodology for this work was based on a content analysis-based review, taking into account specific criteria to ensure the selection of indicator sets that are consistent with the concept of the frequency of cities. Twenty-two indicators in five groups were selected as indicators for a high-frequency city, and a framework was proposed to assess frequency at both the intra-city and inter-city levels. This work would serve as a pilot study to further illuminate the ways that urban policy and operations can be adjusted to improve the quality of city life in the context of a smart city.

Property of long term (1990-2009) seismicity in the region of L’Aquila Mw6.1 earthquake revealed from machine learning 

2021 ◽  
Author(s):  
Josipa Majstorović ◽  
Piero Poli
Keyword(s):  
Epicentral Distance ◽  
Large Earthquake ◽  
Historical Seismicity ◽  
Central Apennines ◽  
Small Magnitude ◽  
Earthquake Detection ◽  
Abruzzo Region ◽  
Background Seismic Activity ◽  
The City

<p>On April 6th 2009 (01:32 UTC) strong earthquake of magnitude M<sub>W</sub>6.1 occurred near the city of L’Aquila in the Abruzzo region in the Central Apennines of Italy. Due to the extensional processes the Abruzzo region is characterized by prominent historical seismicity. However, before the 2009 event the background seismic activity is characterised as sparse and mostly clustered in space and time. The general lack of events, especially small magnitude events before the 2009 event motivated us to study the long-term near-fault seismicity before the large earthquake occurrence. To achieve this we first have to extend the existing catalog. We take into consideration the data from the AQU (42.354, 13.405) station that has been recorded in the city of L’Aquila, near Paganica fault responsible for the 2009 event, during an extensive period of 29-years, 19 years before the event itself. The catalog extension is performed by applying the two-stage convolutional neural network pipeline for earthquake detection and characterisation (epicentral distance and magnitude) using three component signal station waveforms. The algorithm allows us to successfully detect ~800 local events (less than 10 km from the AQU station) in the period 1990-2009. We here present a detailed analysis of this catalog including waveforms characterization to derive new insights about the long term preparation processes(es) occuring before the 2009 M<sub>w</sub>6.1 earthquake.</p>

Analisis Pengaruh Citra Merek dan Kualitas Produk terhadap Keputusan Pembelian Ulang “Slai O’lai”

2021 ◽  
Vol 6 (3) ◽  
pp. 28
Author(s):  
Dini Nur Sofya ◽  
Sugeng Purwanto
Keyword(s):  
Product Quality ◽  
Sampling Method ◽  
Brand Image ◽  
Secondary Data ◽  
Partial Least Square ◽  
Least Square ◽  
Test Reliability ◽  
Probability Sampling ◽  
Convenience Sampling ◽  
The City

Abstract This study aims to determine the effect of brand image and product quality on the decision to repurchase Slai O'lai products in the people of Kediri City and Regency. This type of research is explanatory research, which explains and proves the relationship and influence between the independent variable and the dependent variable. The research method used is quantitative method. This study used a sample of 110 respondents and distributed questionnaires in the City and District of Kediri with the help of Google Forms. Sampling used non-probability sampling method with convenience sampling method. The sample consists of respondents who live in the City and District of Kediri, aged 17 years and over, and have purchased Slai O'lai products more than 2 (two) times. The data used are primary and secondary data, while the analysis technique used in this study is Partial Least Square (PLS) with validity test, reliability test, and hypothesis testing. Based on the results of this study, it can be seen that brand image and product quality have a positive and significant effect on the decision to repurchase Slai O'lai sandwich biscuits. Keywords: brand Image, Product Quality, Repurchase Decision   Abstrak Penelitian ini memiliki tujuan untuk mengetahui pengaruh citra merek dan kualitas produk terhadap keputusan pembelian ulang produk Slai O’lai pada masyarakat Kota dan Kabupaten Kediri. Jenis penelitian ini adalah explanatory research, yang menjelaskan dan membuktikan hubungan dan pengaruh antara variabel bebas dan variabel terikat. Metode penelitian yang digunakan yaitu metode kuantitatif. Penelitian ini menggunakan sampel sebanyak 110 responden dan menyebarkan kuesioner di Kota dan Kabupaten Kediri dengan bantuan Google Forms. Pengambilan sampel menggunakan metode non-probability sampling dengan metode convenience sampling. Sampel terdiri dari responden yang berdomisili di Kota dan Kabupaten Kediri, berusia 17 tahun ke atas, dan telah membeli produk Slai O'lai lebih dari 2 (dua) kali. Data yang digunakan adalah data primer dan sekunder, sedangkan teknik analisis yang digunakan dalam penelitian ini adalah Partial Least Square (PLS) dengan uji validitas, uji reliabilitas, serta uji hipotesis. Berdasarkan hasil penelitian ini dapat diketahui bahwa citra merek dan kualitas produk berpengaruh positif dan signifikan terhadap keputusan pembelian ulang biskuit sandwich merek Slai O’lai. Kata kunci: Citra Merek, Kualitas Produk, Keputusan Pembelian Ulang  

scholarly journals Florence RockinArt

2020 ◽  
Author(s):  
Elena Pecchioni ◽  
Alba Patrizia Santo
Keyword(s):  
Close Link ◽  
Artificial Materials ◽  
Stone Materials ◽  
Geographical Position ◽  
Web App ◽  
Materials Used ◽  
Surrounding Areas ◽  
Stone Walls ◽  
The City ◽  
The Web

The city of Firenze represents, for the variety of its artistic and architectural heritage, a kind of open-air museum. Works of art and monuments are mainly made of the rocks outcropping in Firenze and in the surrounding areas; indeed, a close link exists between monuments, geographical position of the city and its history. Florence, is characterised by the color of its stone-built cultural heritage, mainly by the warm ochraceous color of the Medieval Pietraforte sandstone and the cerulean grey of the Renaissance Pietra Serena sandstone together with other natural and artificial materials used to complete or cover the stone walls. The web-app Florence RockinArt was created to deepen the knowledge of the stone materials. It is addressed to all those who are interested in discovering the monuments of Florence by carefully observing the stone materials that make up them. The web-app contains short historical notes on the main monuments and detailed geological, mineralogical and petrographic characteristics of the natural and artificial materials of which they are constituted.

scholarly journals ANALYSIS OF AFFECTING FACTORS ON PURCHASE DECISION OF SPORT SHOES "FAKE PRODUCT" OF GOLD'S GYM CONSUMERS IN WEST JAKARTA

2021 ◽  
Vol 2 (4) ◽  
pp. 537-550
Author(s):  
Christina Catur Widayati ◽  
Sarton Sinambela ◽  
Magito Magito ◽  
Khilyatin Ikhsani
Keyword(s):  
Data Analysis ◽  
Structural Equation ◽  
Country Of Origin ◽  
Equation Model ◽  
Partial Least Square ◽  
Least Square ◽  
Purchase Decision ◽  
Affecting Factors ◽  
Relationship Of ◽  
The City

The purpose of this study is to find out the factors which affect on purchase decision of fake (non-genuine) Nike sports shoes. Data analysis generally confirms the structural relationship of all variables, namely price and country of origin on brand image and its impact on purchase decision for fake (non-genuine) Nike shoes. This research was conducted on Gold's Gym consumers in the city area of ​​West Jakarta with a sample size of 130 respondents. The data analysis method used in this study is the Component or Variance Based Structural Equation Model where the data processing used Partial Least Square (Smart-PLS) version 3.2.9. The results show that all hypotheses can be accepted, except for the third hypothesis, which indicates that the country of origin does not effect on purchase decision.

scholarly journals The effect of entrepreneurial experience and entrepreneurial orientation on social entrepreneurial performance

2021 ◽  
pp. 1133-1140 ◽  
Author(s):  
Susetyo Darmanto ◽  
Bukirom Bukirom
Keyword(s):  
Social Entrepreneurship ◽  
Entrepreneurial Orientation ◽  
Structural Equation ◽  
Equation Model ◽  
Partial Least Square ◽  
Least Square ◽  
Entrepreneurial Experience ◽  
Analysis Technique ◽  
Waste Bank ◽  
The City

The objective of this study is to analyze the effect of entrepreneurial experience and social entrepreneurship orientation on social entrepreneurship performance. This survey research was conducted on waste bank entrepreneurship activists in the city of Semarang. Thirty-five respondents were taken using the accident sampling method. Partial Least Square Structural Equation Model (PLS-SEM) is used as an analysis technique. The results showed that entrepreneurial experience and social entrepreneurship orientation had a positive and significant effect on the performance of social entrepreneurship. The contribution of the concept of human capital and the concept of entrepreneurial orientation is needed in building social entrepreneurship. The Semarang government is requested to give more attention to developing waste banks due to their contribution to social, economic, and environmental.

scholarly journals The effect of seismic base isolation on structural response of a 12-story hotel building in Padang, Indonesia

2020 ◽  
Vol 156 ◽  
pp. 05026
Author(s):  
Fauzan ◽  
Afdhalul Ihsan ◽  
Mutia Putri Monika ◽  
Zev Al Jauhari
Keyword(s):  
Base Isolation ◽  
Response Spectrum ◽  
Soft Soil ◽  
Structural Response ◽  
Time History ◽  
Seismic Zone ◽  
Isolation System ◽  
Rubber Bearing ◽  
Seismic Base Isolation ◽  
The City

The amount of potential investment in Padang City, Indonesia since 2017 attracted many investors to contribute to the city. One of the investments is a 12-story hotel that will be constructed in By Pass Street of the city. The hotel is located in a high seismic zone area, so the seismic base isolation has been proposed to be used in the hotel building. The main aim of using a seismic base isolation device is to reduce the inertia forces introduced in the structure due to earthquakes by shifting the fundamental period of the structure out of dangerous resonance range and concentration of the deformation demand at the isolation system. An analytical study on the Reinforced Concrete (RC) hotel building with and without rubber bearing (RB) base isolation is carried out using the response spectrum and time history analysis methods. The results show that internal forces and inter-story drift of the building with high damping rubber bearing (HDRB) are lower than that of the fixed base with a remarkable margin. From this study, it is recommended to use the HDRB base isolation for medium and high rise buildings with soft soil in Padang City, Indonesia.

scholarly journals FUNGSI LINGKUNGAN TERBANGUN DI KORIDOR CIGONDEWAH SEBAGAI IDENTITAS KAWASAN INDUSTRI KREATIF DI KOTA BANDUNG

2018 ◽  
Vol 1 (1) ◽  
pp. 55
Author(s):  
Karto Wijaya ◽  
Heru Wibowo
Keyword(s):  
Textile Industry ◽  
Industrial Area ◽  
Creative Industries ◽  
The Road ◽  
Industry Waste ◽  
The People ◽  
The Government ◽  
Developing Area ◽  
Surrounding Areas ◽  
The City

This developing area provides a very wide potential in the development as an area that has excellent products or development projects in Bandung. Cigondewah area has the potential to become this area as a creative industrial area that can support the income of the people and the city of Bandung. Cigondewah is one of the areas known as the Cigondewah environment and surrounding areas as a creative industrial area about the utilization of textile industry waste that sells the rest of cloth from factories around the city of Bandung. The area of Cigondewah grows and develops with the uniqueness of the community itself that will take advantage of opportunities from the textile industry, homes along the road corridor that turns into the shelter, the community into warehouses and shops to sell fabrics.It is also the aim of the government to promote and develop tourist areas Cigondewah for the future to be better again to enhance the identity of the area Cigondewah as a tourist area fabric shopping in the city of Bandung. This study aims to determine the development of creative industries in Cigondewah. Cigondewah Textile Tourism Area of Bandung City, especially Capacity Building, to show the identity and image of Cigondewah area as a textile tourism area in Bandung City. The identity of Cigondewah area which is currently called Cigondewah as Tourism Shopping Area Cloth. From this research is expected to give an idea that the environment is in the corridor Cigondewah road.

scholarly journals Persistent Scatterer Interferometry of Sentinel-1 time series to detect ground subsidence in the city of Recife, Brazil

2020 ◽  
Vol 10 (1) ◽  
pp. 1
Author(s):  
Enton Bedini
Keyword(s):  
Time Series ◽  
Ground Subsidence ◽  
Persistent Scatterer Interferometry ◽  
Persistent Scatterer ◽  
Radar Imagery ◽  
Long Time ◽  
Satellite Radar ◽  
Surrounding Areas ◽  
Satellite Radar Imagery ◽  
The City

Persistent Scatterer Interferometry (PSI) analysis of Sentinel-1 time series was carried out to detect ground subsidence in the city of Recife, Brazil. The dataset consisted of sixty-eight Sentinel-1A Interferometric Wide (IW) Single Look Complex (SLC) images of the time period April 2017 – September 2019. The images were acquired in descending orbit in VV (vertical transmitting, vertical receiving) polarization. The results of the PSI analysis show that in the city of Recife occur several ground subsidence areas. The largest ground subsidence area occurs between the neighborhoods of Afogados, Torrŏes and Cordeiro. The subsidence rates in this area range from few mm/year up to -15 mm/year. This ground subsidence could be a result of groundwater extraction or of subsidence processes in urbanized reclaimed lands. Similar but smaller ground subsidence areas occur in several localities in Recife. In some cases, subsidence with rates of up to -25 mm/year is noted in small zones where new buildings have been constructed in the last decade. This should be due to ground settlement processes, taking a long time due to the particular soils and geology of the locality. This study can serve as a first contribution for further research on the ground subsidence hazard in the city of Recife and the surrounding areas by means of satellite radar imagery.

scholarly journals Paleontological rescue, depositional environment, and stratigraphic correlation of a section of the Ponta Grossa Formation (Paraná Basin)

Terr Plural ◽  
2021 ◽  
Vol 15 ◽  
pp. e2119456
Author(s):  
Elvio Pinto Bosetti ◽  
◽  
Lucinei Jose Myszynski Junior ◽  
Daniel Sedorko ◽  
Luana Oliveira ◽  
...  
Keyword(s):  
High Frequency ◽  
Depositional Environment ◽  
Depositional Environments ◽  
Integrated Analysis ◽  
Stratigraphic Correlation ◽  
Paleontological Heritage ◽  
Paraná Basin ◽  
Specialized Team ◽  
Parana Basin ◽  
The City

The urban area of Ponta Grossa (PR) occurs on one of the most abundant fossiliferous fields in the country, which records an endemic fauna that occurred in the Devonian of the Paraná Basin. The growing urbanization of the city increasingly buries these outcrops, and new works must be accompanied by a specialized team to safeguard the paleontological heritage. This is the case of the Bosque Mistral project, which exposed many layers of the Ponta Grossa Formation, rich in fossils and trace fossils. This study reports the main fossiliferous occurrences in the section, correlates the section with classical outcrops from the literature, and interprets the main depositional environments as well stratigraphic cycles using an integrated analysis of sedimentology and ichnology. The ichnological distribution also evidences the retrogradation pattern, and, particularly, the occurrence of ichnofabrics dominated by Zoophycos at the top of the section is a signature of high-frequency cycles associated with the transgressive systems tract. Macrofossill biodiversity varies according to the facies, in the sandy and silty layers different organisms from the muddy layers occur. In the former, the epibiont fauna (mainly trilobites and brachiopods) is predominant while in the muddy layers the predominance is the endobiont and semi-endobiont fauna (bivalve mollusks and infaunal brachiopods). In other words, the distribution of taxa across the layers is not random.

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