scholarly journals Resources Estimation on further Exploration activities in PT. Trimegah Bangun Persada (Harita Group) Kawasi Village, South Halmahera District, North Maluku

2021 ◽  
Vol 1 (2) ◽  
pp. 29-41
Author(s):  
Simela Talaohu
Keyword(s):  
Ordinary Kriging ◽  
Statistical Approach ◽  
Nearest Neighbor ◽  
Estimation Methods ◽  
The North ◽  
North Part ◽  
Block Area ◽  
Inverse Distance ◽  
Space Distance ◽  
Exploration Activity

PT. Trimegah Bangun Persada intends to do mining activity at the north part of IUP as the south and west parts have already been mined. This research aimed at producing natural resources of laterite nickel in the advanced exploration activity of Tangkuban Block. Besides, it also compared and determined the estimation methods having a good correlation with drilling results. Tangkuban Block carried out core drilling within total drill numbers of 286 spots and space distance 25 meters at the block area 22.16 Ha. This research began with determining the geological domain consisting of limonite, saprolite, and bedrock through a geo-statistical approach. After that, the researcher estimated nickel resources by three methods namely ordinary kriging, inverse distance weight, and nearest neighbor point. The result of estimation by ordinary kriging obtained a total volume of limonite layer 1,345,313 m3 with the content average of 1%, while the total volume of saprolite layer was 1,850,000 m3 1.64%.

scholarly journals Comparison of Coal Reserve Estimation Methods, Case Study PT. Bukit Asam Area, South Sumatra, Indonesia

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Taufiq Muhammad Wijayanto ◽  
Wahyu Wilopo ◽  
I Gde Budi Indrawan ◽  
Sunarko Sunarko
Keyword(s):  
Nearest Neighbor ◽  
Coal Extraction ◽  
Estimation Methods ◽  
Coal Reserve ◽  
Reserve Estimation ◽  
Geological Conditions ◽  
Distance Weighted ◽  
Coal Reserves ◽  
Inverse Distance

The calculation of coal reserves is influenced by the dimensions or size of the coal deposit. There are several types of coal reserve calculation methods, and the use of these methods is adjusted to existing geological conditions. Each method will produce a different amount of coal reserves, although the location is the same. Besides, the amount of coal mining that can be produced is primarily determined by the mine design, especially the optimal slope as a basis for mining pits in the coal extraction. This research aims to estimate coal reserves based on existing pit designs using a variety of methods. Data on coal thickness and topography are used as the basis for reserves estimation. Coal reserve estimation is conducted in several methods: nearest neighbor point (NNP), inverse distance weighted (IDW), and kriging using Surfer 13 software. The results of the reserves estimation indicate that kriging is the best method by providing the smallest error value with an RMSE value of 0.67 and coal reserves of 27,801,543 tons.

scholarly journals A new approach to mapping landslide hazards: a probabilistic integration of empirical and physically based models in the North Cascades of Washington, USA

2019 ◽  
Vol 19 (11) ◽  
pp. 2477-2495
Author(s):  
Ronda Strauch ◽  
Erkan Istanbulluoglu ◽  
Jon Riedel
Keyword(s):  
Statistical Approach ◽  
Joint Probability ◽  
North Cascades ◽  
Physically Based Model ◽  
New Approach ◽  
The North ◽  
Debris Avalanches ◽  
Landslide Hazards ◽  
Infinite Slope Stability Model ◽  
Physically Based

Abstract. We developed a new approach for mapping landslide hazards by combining probabilities of landslide impacts derived from a data-driven statistical approach and a physically based model of shallow landsliding. Our statistical approach integrates the influence of seven site attributes (SAs) on observed landslides using a frequency ratio (FR) method. Influential attributes and resulting susceptibility maps depend on the observations of landslides considered: all types of landslides, debris avalanches only, or source areas of debris avalanches. These observational datasets reflect the detection of different landslide processes or components, which relate to different landslide-inducing factors. For each landslide dataset, a stability index (SI) is calculated as a multiplicative result of the frequency ratios for all attributes and is mapped across our study domain in the North Cascades National Park Complex (NOCA), Washington, USA. A continuous function is developed to relate local SI values to landslide probability based on a ratio of landslide and non-landslide grid cells. The empirical model probability derived from the debris avalanche source area dataset is combined probabilistically with a previously developed physically based probabilistic model. A two-dimensional binning method employs empirical and physically based probabilities as indices and calculates a joint probability of landsliding at the intersections of probability bins. A ratio of the joint probability and the physically based model bin probability is used as a weight to adjust the original physically based probability at each grid cell given empirical evidence. The resulting integrated probability of landslide initiation hazard includes mechanisms not captured by the infinite-slope stability model alone. Improvements in distinguishing potentially unstable areas with the proposed integrated model are statistically quantified. We provide multiple landslide hazard maps that land managers can use for planning and decision-making, as well as for educating the public about hazards from landslides in this remote high-relief terrain.

Oscillations of the Black Sea sea level in the north part of the coast

1999 ◽  
Vol 10 (2) ◽  
pp. 123-130
Author(s):  
Yu. I. Goryachkin ◽  
V. A. Ivanov ◽  
Yu. A. Stepanyants
Keyword(s):  
Sea Level ◽  
Black Sea ◽  
The Black Sea ◽  
The North ◽  
North Part

scholarly journals Recognition in international law: The case of Kosovo and Metohija

2015 ◽  
pp. 289-306
Author(s):  
Tijana Surlan
Keyword(s):  
International Law ◽  
Constitutive Theory ◽  
Sovereign State ◽  
Public International Law ◽  
The Public ◽  
The North ◽  
Official Position ◽  
The Status ◽  
North Part ◽  
The Eu

Recognition is an instrument of the public international law founded in the classical international law. Still, it preserves its main characteristics formed in the period when states dominated as the only legal persons in international community. Nevertheless, the instrument of recognition is today as vibrant as ever. As long as it does not have a uniform legal definition and means of application, it leaves room to be applied to very specific cases. In this paper, the instrument of recognition is elaborated from two aspects - theoretical and practical. First (theoretical) part of the paper presents main characteristics of the notion of recognition, as presented in main international law theories - declaratory and constitutive theory. Other part of the paper is focused on the recognition in the case of Kosovo. Within this part, main constitutive elements of state are elaborated, with special attention to Kosovo as self-proclaimed state. Conclusion is that Kosovo does not fulfill main constitutive elements of state. It is not an independent and sovereign state. It is in the status of internationalized entity, with four international missions on the field with competencies in the major fields of state authority - police, judiciary system, prosecution system, army, human rights, etc. Main normative framework for the status of Kosovo is still the UN Resolution 1244. It is also the legal ground for international missions, confirming non-independent status of Kosovo. States that recognized Kosovo despite this deficiency promote the constitutive theory of recognition, while states not recognizing Kosovo promote declaratory theory. Brussels Agreement, signed by representatives of Serbia and Kosovo under the auspices of the EU, has also been elaborated through the notion of recognition - (1) whether it represents recognition; (2) from the perspective of consequences it provokes in relations between Belgrade and Pristina. Official position of Serbian Government is clear - Serbia does not recognize Kosovo as an independent and sovereign state. On the other hand, subject matter of Brussels Agreement creates new means of improvement for Kosovo authorities in the north part of Kosovo. Thus, Serbian position regarding the recognition is twofold - it does not recognize Kosovo in foro externo, and it completes its competences in foro domestico. What has been underlined through the paper and confirmed in the conclusion is that there is not a recognition which has the power to create a state and there is not a non-recognition which has the power to annul a state.

scholarly journals ACIDENTES COM TRATORES NAS REGIÕES BRASILEIRAS

2019 ◽  
Vol 34 (01) ◽  
pp. 1-9
Author(s):  
Isabela Oliveira Lima ◽  
Leonardo De Almeida Monteiro ◽  
Elivania Maria Sousa Nascimento ◽  
Rafaela Paula Melo ◽  
Mara Alice Maciel dos Santos
Keyword(s):  
Rural Areas ◽  
Exponential Model ◽  
The South ◽  
Inverse Distance Weighted ◽  
The North ◽  
Gis Tools ◽  
Distance Weighted ◽  
E Mail ◽  
Inverse Distance ◽  
Agricultural Machines

ACIDENTES COM TRATORES NAS REGIÕES BRASILEIRAS   ISABELA OLIVEIRA LIMA1; LEONARDO DE ALMEIDA MONTEIRO2; ELIVANIA MARIA SOUSA NASCIMENTO3; RAFAELA PAULA MELO4 E MARA ALICE MACIEL DOS SANTOS5   [1] Doutoranda em Engenharia Agrícola, Departamento de Engenharia Agrícola, Bloco 804, s/n – Pici, cep:60455-760, Fortaleza - CE, Brasil. E-mail: [email protected] 2 Professor Doutor, Universidade Federal do Ceará-UFC, Departamento de Engenharia Agrícola, Bloco 804, s/n - Pici, cep:60455-760, Fortaleza - CE, Brasil. E-mail: [email protected] 3Doutoranda em Engenharia Agrícola, Departamento de Engenharia Agrícola, Bloco 804, s/n - Pici, cep:60455-760, Fortaleza - CE, Brasil. E-mail: [email protected] 4Doutora em Engenharia Agrícola, Departamento de Engenharia Agrícola, Bloco 804, s/n - Pici, cep:60455-760, Fortaleza - CE, Brasil. E-mail: [email protected] 5Mestre e Engenharia Agrícola, Departamento de Engenharia Agrícola, Bloco 804, s/n - Pici, cep:60455-760, Fortaleza - CE, Brasil. E-mail: [email protected]   RESUMO: Acidentes de trabalho no meio rural estão se tornando cada dia mais frequentes, e se faz necessário a identificação destes para que se possa implementar medidas preventivas. Em consonância a essa busca o presente trabalho objetivou-se a mapear acidentes com máquinas agrícolas sucedidos no Brasil no período de janeiro de 2013 a maio de 2016, usando técnicas de geoprocessamento para a confecção dos mapas. Os dados foram obtidos a partir de um compilado de informações de acidentes ocorridos no período. Foram desenvolvidos mapas pelo IDW (Inverse Distance Weighted), permitindo a identificação das áreas de maior e menor concentração de acidentes. Os dados analisados foram submetidos a uma verificação da dependência espacial das variáveis, pela análise geoestatística, segundo Yamamoto e Landim (2015). Os resultados demonstram uma maior concentração de acidentes na região Sul do país. As regiões Sul e Norte apresentaram médias de acidentes iguais a do território nacional. A menor média de acidentes foi na região Nordeste (1,2 acidentes/Estado). As regiões Sul, Sudeste, Centro oeste e Nordeste apresentaram como modelo efeito pepita puro (EPP), enquanto que a região Norte apresentou modelo exponencial. O uso de ferramentas de SIG mostrou-se eficiente para o mapeamento dos acidentes com tratores nas regiões brasileiras.   Palavras-chaves: Segurança, Prevenção, Georreferenciamento, Mecanização agrícola.   ACCIDENTS WITH TRACTORS IN THE BRAZILIAN REGIONS   ABSTRACT: Accidents at work in rural areas are becoming more frequent, and their identification is necessary so that preventive measures can be implemented. In line with this search, the present work aimed to map accidents with agricultural machines succeeded in Brazil from January 2013 to May 2016, using geoprocessing techniques to make maps. Data were obtained from a compilation of information on accidents occurring in the period. Maps were developed by IDW (Inverse Distance Weighted), allowing the identification of areas with the highest and lowest concentration of accidents. Os dados analisados foram submetidos a uma verificação da dependência espacial das variáveis, pela análise geoestatística, segundo Yamamoto e Landim (2015). The results show a higher concentration of accidents in the southern region of the country. The South and North regions had accident averages equal to the national territory. The lowest average of accidents was in the Northeast region (1.2 accidents / State). The South, Southeast, Midwest and Northeast regions presented as pure nugget effect (EPP) model, while the North region presented exponential model. The use of GIS tools proved to be efficient for the mapping of tractor accidents in the Brazilian regions.   Keywords: safety, prevention, georeferencing, agricultural mechanization.

scholarly journals State of Heavy Metals Pollution of Flooded Agricultural Land in the North Part of Republic of Srpska

2017 ◽  
Vol 17 (1) ◽  
pp. 19
Author(s):  
Tihomir Predić ◽  
Petra Nikić Nauth ◽  
Bojana Radanović ◽  
Alen Predić
Keyword(s):  
Heavy Metals ◽  
Soil Contamination ◽  
Agricultural Land ◽  
Total Content ◽  
Soil Samples ◽  
Available Phosphorus ◽  
The North ◽  
North Part ◽  
Grid Points ◽  
Phosphorus And Potassium

This paper presents the results of the research of soil contamination in flooded area located at the confluence of Bosna and Sava rivers. The sampling was performed according to a network of points Etrs89 reference European Network based on grid points of 500 m x 500 m. The total number of soil samples was 31 and 13 samples of sediment-mud. In the soil samples and sediment-mud samples various parameters were analyzed: pH H2O and 1 M KCl, humus (method by Tjurin), and the readily available phosphorus and potassium (AL method). The interpretation of total content of heavy metals in the soil was conducted according to Dutch Soil Remediation Circular (2009). The samples were analyzed for the total content of heavy metals: Pb, Cd, Cr, Ni, Zn, Cu (aqua regia digestion, AAS) and the elevated concentrations of Ni. However, Ni content in mud was from 240.5 mg/kg to 294.5 mg/kg, in soil it was from 128.9 mg/kg to 452.1 mg/kg. All mud samples were alkaline, and 79% of soil samples were alkaline and of neutral reaction. The analysis indicated that the flood in May 2014 was not caused by soil contamination with heavy metals, which however contributed to the increase of the overall content of these elements in the soil.

scholarly journals The Expansion and Spatial Pattern of Shopping and Tourism Services Facilities in North Bandung Region, Indonesia

2021 ◽  
Vol 6 (2) ◽  
pp. 385-400
Author(s):  
Lia Warlina ◽  
Lusia Elsa Dika Damayanty
Keyword(s):  
Spatial Pattern ◽  
Local Governments ◽  
Nearest Neighbor ◽  
The North ◽  
First Results ◽  
Spatial Use ◽  
Tourism Service ◽  
Tourism Services ◽  
Spatial Plan ◽  
Tourist Service

This study aims to identify the expansion and spatial patterns of shopping and tourism services facilities and evaluate whether the locations are aligned with the spatial plan map of the North Bandung region. The research was conducted by taking inventory of shopping and tourism services facilities in 2010, 2012, 2014, 2016, and 2018. The locations were plotted into maps to calculate each point's spatial pattern for each period using the nearest neighbor analysis method. The 2018 map was overlaid with a spatial plan map to identify whether the existing location aligns with the regional plan. The first results were the expansion and spatial pattern maps of shopping North Bandung area for 2010, 2012, 2014, 2016, and 2018; that show the broadest expansion of shopping facility in 2018 with a clustered pattern. The second results were expansion, and spatial pattern maps of tourism service facilities in the same period show that since 2014 the expansion started with clustered patterns. The evaluation results show that only convenience stores were located in protected areas, but all tourist service facilities were located in these locations. This finding is essential for local governments in monitoring spatial use.

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