scholarly journals Optimize of Least-Square Inverse Constrain Method of Geoelectrical Resistivity Wenner-Schlumberger for Investigation Rock Structures in Malalak Districts of Agam West Sumatra

2019 ◽  
Author(s):  
Akmam Akmam ◽  
Harman Amir; ◽  
Amali Putra
Keyword(s):  
Least Square ◽  
Inversion Method ◽  
Damping Factor ◽  
Slide Surface ◽  
Rock Structure ◽  
Wide Range ◽  
West Sumatra ◽  
Geoelectric Resistivity ◽  
Geoelectrical Resistivity ◽  
The City

Numerous studies have been conducted on an inversion method, focus on constraining factor,singuler value, speed of convergence. However, the result of inversion is not unique and bivalent. In this research, we optimize of Least-Square constrain by using damping factor. Th is method used for interpretation of the volumes and rock structure in Malalak Distric of Agam West Sumatra. This is undertaken because Malalak districts of Agam West Sumatra that passed by highway Padang and Bukittingi is a frequent area of landslide. Furthermore, the frequency of the landslide depends on the type of rock and the angle of the slope . The depth of the slide surface can be predicted by using the least squares inversion constrain method of Geoelectric Resistivity. Landslides resulted in disruption of transportation between the city of Padang and another district in Sumatra. Based on the above, to determine the rock's structure, the depth and tilt angle of the slide surface in Malalak districts Agam West Sumatra has to take place. Data obtained through Geoelectrical exploration using with automatic resistivitymeter equipment. Constrains were obtained using the Marquat inversion method. The result of the research is first, the damping factor for structures which have wide range resistivity is 0.02 and the smallest damping factor is 0.015. Second, the rock structure in Malalak of Agam consists of clay, sandstone, andesite, and limestone and dolomite. Implementation this research can be used to develop mitigation of landslide deserter.

scholarly journals PERSAMAAN PERCEPATAN TANAH MAKSIMUM GEMPA TEKTONIK UNTUK KAWASAN SUMATERA BARAT

2019 ◽  
Author(s):  
Akmam Akmam
Keyword(s):  
Physical Characteristics ◽  
Least Square ◽  
Inversion Method ◽  
Local Magnitude ◽  
Ground Acceleration ◽  
Earthquake Energy ◽  
West Sumatra ◽  
Region Data ◽  
Fundamental Research

Characteristic of earthquake in a region can be studied through its physical characteristics, such as magnitude and earthquakes energy. Energy which is produced by earthquake can be predicted from magnitude. So far, a lot of research produces different equation to predict of earthquake energy that is depending on zone of earthquake occurred. The purpose of descriptive fundamental research was to find equation for ground acceleration which is presented by local magnitude earthquake for West Sumatra region. Data sounder for research were collected from BMG Padang Panjang which was recorded from 1982 to 2008. Data are analyzed by using least square inversion method. Equation ground acceleration is log αac = 0.451Io +0.146 ML + 0.744 log ∆ - 2.644, which local magnitude is ML = 0.413I0 – 0.785 Log H + 5.334 and intensity of the earthquake in the epicenter is Io = I + 3 log (Δ/H) + 0.01 (ΔH).

Identifikasi Bidang Gelincir Menggunakan Metoda Geolistrik Tahanan Jenis Daerah Rawan Longsor Di Kota Padang Dan Kabupaten Agam Sumatera Barat

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Akmam Akmam ◽  
Harman Amir ◽  
Amali Putra
Keyword(s):  
Cross Section ◽  
Surface Characteristics ◽  
Least Square ◽  
Inversion Method ◽  
Landslide Risk ◽  
Resistivity Method ◽  
Topographic Slope ◽  
True Resistivity ◽  
West Sumatra ◽  
Landslide Mitigation

Sumatera Barat memiliki topografi bergelombang dan curam. Sumatera Barat disamping memiliki kemiringan topografi lebih dari 30 derajat, juga memiliki curah hujan yang tinggi. Kondisi tersebut menjadikan kawasan ini memiliki potensi resiko longsor yang cukup tinggi. Masalah ini perlu ditanggulangi dengan melakukan penelitian tentang bagaimana karakteristik permukaan bidang gelincir sebagai studi pendahuluan mitigasi longsor di Sumatera Barat. Informasi tentang karakteristik bidang lincir di daerah rawan longsor di Sumatera Barat belum banyak tersedia. Dengan alasan di atas, dilakukan penelitian yang bertujuan untuk mengetahui kedalaman dan kemiringan bidang gelincir di Kota Padang dan Kabupaten Agam Sumatera Barat. Penelitian eksploratif ini menggunakan metode resistivitas dengan peralatan Ares (produksi Cheko). Data resistivitas semu diinterpretasikan menggunakan metode inversi Least-Square yang telah dioptimalkan untuk mendapatkan penampang 2D resistivitas sesungguhnya. Ketebalan dan kemiringan permukaan bidang gelincir daerah target dihitung berdasarkan penampang 2D resistivitas sesungguhnya dengan bantuan data topografi. Penelitian menunjukkan bahwa rata-rata kedalaman dan sudut permukaan bidang gelincir di Kabupaten Agam Sumatera Barat masing-masing adalah 410 dan 16,5 meter. Rata-rata kedalaman dan sudut kemiringan permukaan bidang lincir di Padang masing-masing 380 dan 12,5 meter. Batuan yang berperan sebagai permukaan bidang gelincir adalah Clay.   West Sumatra has wavy and steep topography. Beside, West Sumatra has topographic slope more than 30, it also has high rainfall. This condition makes this area has a high potential of landslide risk. This problem needs to get a scientific study of how the surface characteristics of the landslide field as a preliminary study of landslide mitigation in West Sumatera. Information on the characteristics of landslide surfaces in landslide prone areas in West Sumatra has not been widely available. Based on the above reason, research has been done to find out the depth and slope of the landslide surface in Padang and Agam Regency of West Sumatra. This explorative research uses resistivity method using Ares equipment set (Cheko production). The apparent resistivity data is interpreted using the optimized optimized least-squares smoothness-constrain inversion method in order to obtain true resistivity 2D cross-section.  The layer thickness and the slope of landslide surface the targeted area was calculated base on true resistivity 2D cross-section that synchronized with topographic data. The results showed that the average both depth and angle of the landslide surfaces in Agam regency of West Sumatra were 41 degree and 16.5 meters respectively. The average both depth and angle of the landslide surfaces in Padang were 38 degree  and 12.5 meters respectively. The rock that acts as a landslide surfaces is Clay.

Death in the City

2017 ◽  
Author(s):  
Kathryn A. Sloan
Keyword(s):  
Scientific Inquiry ◽  
The United States ◽  
Violent Death ◽  
Special Relationship ◽  
Intimate Friend ◽  
Counter Narrative ◽  
Wide Range ◽  
European Heritage ◽  
The City ◽  
The Temple

Popular culture has long conflated Mexico with the macabre. Some persuasive intellectuals argue that Mexicans have a special relationship with death, formed in the crucible of their hybrid Aztec-European heritage. Death is their intimate friend; death is mocked and accepted with irony and fatalistic abandon. The commonplace nature of death desensitizes Mexicans to suffering. Death, simply put, defines Mexico. There must have been historical actors who looked away from human misery, but to essentialize a diverse group of people as possessing a unique death cult delights those who want to see the exotic in Mexico or distinguish that society from its peers. Examining tragic and untimely death—namely self-annihilation—reveals a counter narrative. What could be more chilling than suicide, especially the violent death of the young? What desperation or madness pushed the victim to raise the gun to the temple or slip the noose around the neck? A close examination of a wide range of twentieth-century historical documents proves that Mexicans did not accept death with a cavalier chuckle nor develop a unique death cult, for that matter. Quite the reverse, Mexicans behaved just as their contemporaries did in Austria, France, England, and the United States. They devoted scientific inquiry to the malady and mourned the loss of each life to suicide.

Museum Preserves in the Sphere of “Cultural Tourism”: Through the Example of the Cultural Preserves of Tatarstan

2019 ◽  
Vol 9 (4) ◽  
pp. 193-198
Author(s):  
Lyudmila S. Timofeeva ◽  
Albina R. Akhmetova ◽  
Liliya R. Galimzyanova ◽  
Roman R. Nizaev ◽  
Svetlana E. Nikitina
Keyword(s):  
19Th Century ◽  
Art Museum ◽  
Medium Size ◽  
Business Elite ◽  
Wide Range ◽  
The Subject ◽  
Tourist Center ◽  
Regional Authorities ◽  
The 19Th Century ◽  
The City

Abstract The article studies the existence experience of historical cities as centers of tourism development as in the case of Elabuga. The city of Elabuga is among the historical cities of Russia. The major role in the development of the city as a tourist center is played by the Elabuga State Historical-Architectural and Art Museum-Reserve. The object of the research in the article is Elabuga as a medium-size historical city. The subject of the research is the activity of the museum-reserve which contributes to the preservation and development of the historical look of Elabuga and increases its attractiveness to tourists. The tourism attractiveness of Elabuga is obtained primarily through the presence of the perfectly preserved historical center of the city with the blocks of integral buildings of the 19th century. The Elabuga State Historical-Architectural and Art Museum-Reserve, which emerged in 1989, is currently an object of historical and cultural heritage of federal importance. Museum-reserves with their significant territories and rich historical, cultural and natural heritage have unique resources for the implementation of large partnership projects. Such projects are not only aimed at attracting a wide range of tourists, but also stimulate interest in the reserve from the business elite, municipal and regional authorities. The most famous example is the Spasskaya Fair which revived in 2008 in Elabuga. It was held in the city since the second half of the 19th century, and was widely known throughout Russia. The process of the revival and successful development of the fair can be viewed as the creation of a special tourist event contributing to the formation of new and currently important tourism products.

Forest path condition monitoring based on crowd-based trajectory data analysis

2020 ◽  
pp. 1-18
Author(s):  
Francisco Arcas-Tunez ◽  
Fernando Terroso-Saenz
Keyword(s):  
Information Acquisition ◽  
Road Network ◽  
Road Networks ◽  
Trajectory Data ◽  
Country Road ◽  
Wide Range ◽  
Sport Activities ◽  
Path Condition ◽  
Spatio Temporal ◽  
The City

The development of Road Information Acquisition Systems (RIASs) based on the Mobile Crowdsensing (MCS) paradigm has been widely studied for the last years. In that sense, most of the existing MCS-based RIASs focus on urban road networks and assume a car-based scenario. However, there exist a scarcity of approaches that pay attention to rural and country road networks. In that sense, forest paths are used for a wide range of recreational and sport activities by many different people and they can be also affected by different problems or obstacles blocking them. As a result, this work introduces SAMARITAN, a framework for rural-road network monitoring based on MCS. SAMARITAN analyzes the spatio-temporal trajectories from cyclists extracted from the fitness application Strava so as to uncover potential obstacles in a target road network. The framework has been evaluated in a real-world network of forest paths in the city of Cieza (Spain) showing quite promising results.

scholarly journals TARGET MODAL SPLIT MODEL

Transport ◽  
2012 ◽  
Vol 26 (4) ◽  
pp. 418-424 ◽  
Author(s):  
Valentina Basarić ◽  
Jadranka Jović
Keyword(s):  
Public Transport ◽  
Stepwise Regression ◽  
Statistical Data ◽  
Transport Policy ◽  
Wide Range ◽  
Policy Measures ◽  
Novi Sad ◽  
The Relationship ◽  
The City ◽  
Statistical Results

The research presented in this paper is aimed at defining a model that enables the management of the relationship between private vehicles and public transport applying the available instruments of city transport policy such as parking policy and public transport policy measures. Statistical data used for modelling is sourced from the database in a wide range of EU cities. The target model was developed in the form of stepwise regression analysis. Very favourable statistical results were obtained, and the subsequent tests on the city of Novi Sad (250000 inhabitants) led to the conclusion that the obtained results were suitable for implementation in practice. The results of the implemented procedure are of great importance for the enhancement of the existing transport policies in cities, as they enable the development of strategies for finding combinations of instruments that would bring the transport system and urban environment into a desired-viable rather than consequential condition.

A Comparison of Urban with Rural Support Networks: Liverpool and North Wales

1995 ◽  
Vol 15 (1) ◽  
pp. 59-81 ◽  
Author(s):  
G. Clare Wenger
Keyword(s):  
Rural Communities ◽  
Support Networks ◽  
Support Network ◽  
Social Variables ◽  
North Wales ◽  
Care And Support ◽  
Wide Range ◽  
Highly Correlated ◽  
High Level ◽  
The City

AbstractThis paper compares findings on the distribution of support networks in the City of Liverpool and in rural communities in North Wales. It demonstrates that while support network type is highly correlated with a wide range of demographic and social variables in both urban and rural samples, the nature of the relationships are not always comparable. The paper shows how cultural, migration and socio-economic factors interact to affect the formation of different types of support networks. As a result of a more stable elderly population, more old people in Liverpool have network types able to provide a high level of informal care and support.

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  

Visual Arts, Representations and Interventions in Contemporary China

2018 ◽  
Keyword(s):  
Urban Space ◽  
Visual Arts ◽  
Cultural Production ◽  
Mainland China ◽  
Social Changes ◽  
Power Structures ◽  
Cultural Activism ◽  
Political Issues ◽  
Wide Range ◽  
The City

This edited volume provides a multifaceted investigation of the dynamic interrelations between visual arts and urbanization in contemporary Mainland China with a focus on unseen representations and urban interventions brought about by the transformations of the urban space and the various problems associated with it. Through a wide range of illuminating case studies, the authors demonstrate how innovative artistic and creative practices initiated by various stakeholders not only raise critical awareness on socio-political issues of Chinese urbanization but also actively reshape the urban living spaces. The formation of new collaborations, agencies, aesthetics and cultural production sites facilitate diverse forms of cultural activism as they challenge the dominant ways of interpreting social changes and encourage civic participation in the production of alternative meanings in and of the city. Their significance lies in their potential to question current values and power structures as well as to foster new subjectivities for disparate individuals and social groups.

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