Spatial Variability Characteristics of Soil Available Mn and Zn in the Middle Reaches of Tuojiang River Basin

2012 ◽  
Vol 518-523 ◽  
pp. 2204-2212
Author(s):  
Xiao Xun Xu ◽  
Shi Rong Zhang ◽  
Wen Ye ◽  
Liang Ji Deng ◽  
Ting Li ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
River Basin ◽  
Global Positioning System ◽  
Random Sampling ◽  
Environmental Issues ◽  
Threshold Value ◽  
Influential Factors ◽  
Positioning System ◽  
Parent Materials ◽  
Global Positioning

The available states of Manganese (Mn) and zinc (Zn) in soil exert important roles in same biochemical reactions. Their deficiency can result in plant micronutrient disorders, but the excess contents may contribute to several environmental issues. Their spatial distribution and influential factors in the middle reaches of Tuojiang River Basin, a typical region with the broken terrain and densely populated hill, were studied with the combination of statistics, geostatistics, global positioning system (GPS) and geographic information system (GIS). According to the data of the contents in topsoil (0~20 cm) from the 296 random sampling points,the contents of soil available Mn and Zn were 5.95 and 1.05 mg kg-1, respectively. The highest value regions (>11 mg kg-1) of Mn contents were mainly distributed in the central parts of study area, and first decreased to the both sides from the central and then increased towards the northwest. The highest value regions (>1.8 mg kg-1) of Zn contents were mainly distributed in the northwest parts, and then reduced gradually towards to the southeast and southwest presenting zonal shapes. Almost 30% of the area had higher than 50% probability to exceed the threshold value (7.00 mg kg-1) of the soil available Mn based on probability kringing, Similarly, more than 70% part of the area with the probability more than 50% exceed the threshold value (0.50 mg kg-1) of soil available Zn. The content and spatial distribution of soil Mn and Zn were affected by parent materials, landform types, slopes, landuse patterns, textures, pH and organic matters (OM). While the above factors except for OM and texture (P>0.05) had significant influence on soil available Mn (P<0.05). On the contrary, only OM was the significant influent factor to soil available Zn (P<0.05).

scholarly journals HUBUNGAN PANJANG BERAT DAN FAKTOR KONDISI IKAN SEMBILANG (Plotosus canius) DI SUNGAI BELAWAN

2021 ◽  
Vol 1 (1) ◽  
pp. 1-6
Author(s):  
Uswatul Hasan ◽  
Dwi Tika Afriani
Keyword(s):  
Global Positioning System ◽  
Random Sampling ◽  
Positioning System ◽  
Microsoft Excel ◽  
Global Positioning

Tujuan peneitian ini adalah untuk mengetahui pola pertumbuhan dan hubungan panjang berat ikan sembilang di Sungai Belawan. Pengambilan sampel ikan dimulai pada bulan Mei–Juli 2019. Penangkapan ikan menggunakan bubu dan pancing. Penentuan stasiun pengamatan menggunakan teknik purposive random sampling menggunakan Global Positioning System (GPS). Ikan diambil pada 3 titik stasiun pengamatan yang ditentukan berdasarkan luas badan perairan. Ikan yang tertangkap dilakukan pengukuran panjang total (total lenght) dan bobotnya. Analisis data menggunakan aplikasi Microsoft Excel 2010. Berdasarkan hasil analisis pola pertumbuhan ikan menunjukan nilai a = 0,0276 dan nilai b = 2,4701 serta nilai R2 = 0,849. Pola pertumbuhan ataupun hubungan panjang dan berat ikan sembilang di Sungai Belawan bersifat alometrik negatif. Kondisi faktor lingkungan berdasarkan hasil pengamatan menunjukan suhu air (29-31oC), Kecerahan air (46-141 cm), pH air (6,8-7,1), salinitas (15-20‰), DO (5,5-5,8 mg/L), BOD (2,900-3,400 mg/L), Nitrit (0,369-0,388 mg/L), Nitrat (2,0-4,9 mg/L), dan Posfat (0,30-0,80 mg/L)

scholarly journals Spatial Distribution of Malaria Vector Breeding Sites in Purworejo District, Central Java Province

2021 ◽  
Vol 13 (1) ◽  
pp. 1-8
Author(s):  
Sunaryo Sunaryo ◽  
Bina Ikawati ◽  
Tri Wijayanti
Keyword(s):  
Spatial Distribution ◽  
Global Positioning System ◽  
Malaria Vector ◽  
Positioning System ◽  
Breeding Sites ◽  
Central Java ◽  
Global Positioning ◽  
Central Java Province

Malaria merupakan masalah kesehatan utama di Purworejo terutama pada daerah perbukitan yang berbatasan dengan Kabupaten Magelang, Provinsi Jawa Tengah dan Kabupaten Kulonprogo, Provinsi Daerah Istimewa Yogyakarta. Daerah perbukitan tersebut merupakan daerah reseptif malaria. Keberadaan dari habitat perkembangbiakan vektor malaria yang berdekatan dengan pemukiman serta terjadi setiap musim, menyebabkan penularan malaria terjadi sepanjang tahun. Pemetaan spasial tempat perkembangbiakan vektor malaria dapat membantu penelusuran dan tindak lanjut intervensi terhadap pengendalian vektor malaria. Survei dan pemetaan tempat perkembangbiakan vektor malaria dilakukan menggunakan Global Positioning System (GPS) dan hasilnya diolah dengan ArcGIS. Penelitian dilakukan pada bulan April-November 2018 di Purworejo. Hasil penelitian menunjukkan bahwa tempat perkembangbiakan vektor malaria pada musim kemarau adalah genangan air di sepanjang aliran sungai dan mata air di sekitar pemukiman; dalam bentuk genangan-genangan kecil yang terisi sedikit air. Tempat perkembangbiakan dalam kondisi terlindung dengan adanya tanaman atau pepohonan. Tindakan intervensi yang tepat adalah dengan mengeringkan tempat perkembangbiakan vektor, membuat perlindungan mata air, larvasidasi pada musim kemarau serta penggunaan kelambu berinsektisida pada masyarakat di sekitar tempat perkembangbiakan vektor. Penelitian menyimpulkan bahwa identifikasi tempat perkembangbiakan vektor malaria pada musim kemarau di sepanjang aliran sungai dan mata air.

scholarly journals Design & Implementation of Intelligent System for Identification of Fuel Fraudulents and Near by Fuel Stations

2019 ◽  
Vol 8 (2) ◽  
pp. 1515-1518
Keyword(s):  
Global Positioning System ◽  
Mobile Communication ◽  
Intelligent System ◽  
Threshold Value ◽  
Positioning System ◽  
Filling Process ◽  
Through Flow ◽  
Global Positioning ◽  
Lcd Display ◽  
Rate Sensor

The increasing frauds in fuel filling process have become a big deal to the society. The pumps in petrol bunks are controlled with the end goal that it shows the fuel filled into vehicle as entered, yet the amount of fuel filled is not exactly shown by the display. The petrol bunk proprietors are making enormous benefits by tricking the clients. This is redressed through estimation of approaching fuel through flow rate sensor and showing it on the LCD display and the measured output is sent as a message by means of global system for mobile communication (GSM) technology to the enlisted user for undeniable record can be made. This would help the proprietors of transportation companies to keep up a record of their vehicles that are run by their paid drivers. if the petrol in the tank is less than threshold value then LED glows continuously until the petrol is filled and it display the distance of the nearby petrol bunks by using the global positioning system (GPS) and is displayed on LCD.

Mining Route Set Distribution Range and Affecting Factor Threshold Based on Global Positioning System Data

2021 ◽  
pp. 036119812199905
Author(s):  
Yajuan Deng ◽  
Sanghuiyu Yan ◽  
Xianbiao Hu ◽  
Peng Zhang
Keyword(s):  
Spatial Distribution ◽  
Global Positioning System ◽  
Computation Time ◽  
Travel Distance ◽  
Distribution Range ◽  
Positioning System ◽  
Search Range ◽  
Factors Affecting ◽  
Global Positioning ◽  
System Data

Traditional route generation algorithms may result in many routes that few drivers choose in reality, whereas other route generation algorithms need to determine thresholds for route set generation but lack data support. To avoid invalid route generation, reduce computation time, and provide a scientific basis for the generation of navigation routes and traffic assignment, this paper confines the route set size by mining the spatial distribution range of route sets and the threshold of factors affecting route set generation. Global positioning system data are used to determine hotspots based on a hotspot origin–destination identification method. The route set spatial distribution range is mined by the standard deviational ellipse. Finally, the factors affecting the generation of route sets are selected, and the classification and regression trees algorithm is used to mine their thresholds. The results show that the spatial distribution range of route sets is elliptical, and the threshold values of the number of turns per kilometer for medium and long travel distances are 1.794 and 2.508, respectively. The maximum travel time per kilometer for long travel distance is 4.773 min. The maximum numbers of road intersections for short, medium, and long travel distance per kilometer are 1.648, 0.984, and 0.592, respectively. The implications of results on reducing the search range and time of the route set and their applications to traffic network design and route navigation are also discussed.

Aplikasi Pemosisi Lokal Berbasis Android Dengan Menggunakan GPS

INTI TALAFA ◽  
2018 ◽  
Vol 8 (2) ◽  
Author(s):  
Yaman Khaeruzzaman
Keyword(s):  
Global Positioning System ◽  
Positioning System ◽  
Database Server ◽  
Global Positioning

Seiring dengan pesatnya kemajuan teknologi saat ini, kebutuhan manusia menjadi lebih beragam, termasuk kebutuhan akan informasi. Tidak hanya media informasinya yang semakin beragam, jenis informasi yang dibutuhkan juga semakin beragam, salah satunya adalah kebutuhan informasi akan posisi kita terhadap lingkungan sekitar. Untuk memenuhi kebutuhan itu sebuah sistem pemosisi diciptakan. Sistem pemosisi yang banyak digunakan saat ini cenderung berfokus pada lingkup ruang yang besar (global) padahal, dalam lingkup ruang yang lebih kecil (lokal) sebuah sistem pemosisi juga diperlukan, seperti di ruang-ruang terbuka umum (taman atau kebun), ataupun dalam sebuah bangunan. Sistem pemosisi lokal yang ada saat ini sering kali membutuhkan infrastruktur yang mahal dalam pembangunannya. Aplikasi Pemosisi Lokal Berbasis Android dengan Menggunakan GPS ini adalah sebuah aplikasi yang dibangun untuk memenuhi kebutuhan pengguna akan informasi lokasi dan posisi mereka terhadap lingkungan di sekitarnya dalam lingkup ruang yang lebih kecil (lokal) dengan memanfaatkan perangkat GPS (Global Positioning System) yang telah tertanam dalam perangkat smartphone Android agar infrastruktur yang dibutuhkan lebih efisien. Dalam implementasinya, Aplikasi Pemosisi Lokal ini bertindak sebagai klien dengan dukungan sebuah Database Server yang berfungsi sebagai media penyimpanan data serta sumber referensi informasi yang dapat diakses melalui jaringan internet sehingga tercipta sebuah sistem yang terintegrasi secara global. Kata kunci: aplikasi, informasi, pemosisi, GPS.

The Distribution of Hospitality Services in Uyo Urban, Nigeria

2018 ◽  
pp. 137-150
Author(s):  
Violet Bassey Eneyo
Keyword(s):  
Data Collection ◽  
Global Positioning System ◽  
Central Area ◽  
Positioning System ◽  
Nearest Neighbour ◽  
Global Positioning ◽  
Neighbour Analysis

This paper examines the distribution of hospitality services in Uyo Urban, Nigeria. GIS method was the primary tool used for data collection. A global positioning system (GPS) Garmin 60 model was used in tracking the location of 102 hospitality services in the study area. One hypothesis was stated and tested using the nearest neighbour analysis. The finding shows evidence of clustering of the various hospitality services. The tested hypothesis further indicated that hospitality services clustered in areas that guarantee a sustainable level of patronage to maximize profit. Thus, the hospitality services clustered in selected streets in the metropolis while limited numbers were found outside the city’s central area.

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