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Forum Geografi
Published by Universitas Muhammadiyah Surakarta
ISSN : 08520682     EISSN : 24603945     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
Forum Geografi, Indonesian Journal of Spatial and Regional Analysis (For. Geo) is an open access, peer-reviewed journal that will consider any original scientific article for expanding the field of geography. The journal publishes articles in both physical and human geography specialties of interest to spatial analysis and regional analysis in (but not limited) Indonesia by applying GIS and/or remote sensing techniques.
Arjuna Subject : -
Articles 1,205 Documents
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Potential of Mainstay Debit of Lematang River, South Sumatra for the Regional Planning for Irrigation at Dongku and Modong Syariman, Petrus; Kustaman, Kustaman
Forum Geografi Vol 13, No 1 (1999)
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Abstract

District Muara Enim, South Sumatra Province has a potential region to develop an agriculture sector especially rice fields. The water resource such as Water Enim and Lamatang River support the capacity of the developing. Acording to the study in 1985 carried out by the BCEOM and Kampsax consultants, the lower Lematang region. Dangku Kiri, Dangku Kanan, and Modong with the total area of about 10.000 Ha has a highly potential to built rice field ith the technical irrigation. Based on the information, research of dependable flow of Lematang River to the irrigation requirement had been carried out by analyzing of all data collecting in those area  such as rainfall, climate, and discharge data. The result shows that the dependable flow of 20% probability of non exceedence is about 65.3 m3/sec. It is potential enough compare with the irrigation requirement of about 1.85 l/sec/ha or 18.5 m3/sec of total irrigation area. Technically, dependable flow of Lematang River is big enough but some constraints will appear especially in determining of free intake or weir because the river gradient is too low and the main  channel has been used by the people for navigation. To increase the accuracy of the research, an Automatic Water Level Recorder and one climatological station should be installed respectively in the alternative I location and in the irrigation area.
Study on Geomorphology of Cepogo Sub-District, Boyolali, Central Java Purwanto, Ajun
Forum Geografi Vol 11, No 1 (1997)
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Abstract

There are two point of this geomorphological research. Firstly, to study the characteristic or physical condition of the observed area. Secondly, data providing or geomorphology information extracted from geomorphological map of scale 1 : 25.000. this research included literature study collecting of primary and secondary data. The method applied in this researh was the map interpretation of the observed area. The maps interpretation  included topographical, geological, slope, and soil. Fieldwork was carried out to compare the result of maps interpretation  with the facts of field, all at once for recording and surveying of the field physical data observed in the research. There were four types of recorded physical data i.e morphology, morphogenesis, morphocronology,, and morphoarrangement. In the research there was known that the observed area consists of an origin landform i.e. formation of volcanic origin and distinguished into nine units of landform. In broad outline, in the observed area of the research, there were many geomorphological processes i.e. weathering, erosion, and massdenudation of rocks, and there were also found steeply slopes deep valleys and formation of alluvial fan.
The Strategy Of The Homeless Survival In Surakarta Kaeksi, Retno Woro; Umrotun, Umrotun; Susanto, Susanto; Handayani, Triana Nur; Nugroho, Satriyo
Forum Geografi Vol 16, No 1 (2002)
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Abstract

The research is carried out in Surakarta. The goal of the study is to know: the characteristic of the homeless, the factors that cause them to he the homeless and the strategis of the homeless to survive in Surakarta. The research uses survey method, while its area is chosen purposively. The research also uses primary and secondary data. The primary data is obtained by interviewing the respondents with questionnaire, while secondary data is based on the information got from the relevant institution.The resjoondents are taken 10 % randomly from all the population. The results of the rsearch show that the homeless are 11-8 years old (96.66%), most of them are boys (91.11%). The majority of the respondents did graduate from the Lower Secondary School (55.56%); most of them come from outside of Surakarta (62%). Their primary activity is as singing beggars (62,22 %) and their daily income is about RP 10. 000 RP 14. 000 (60.00%). Their parents are uneducated people. They are only graduated from Elementary School (7S.56%).The factors that cause them to he homeless are the economic factor 77.78%, lack of family attention (13.33%) and the willingness to he independent (80.89%). Based on the  result this research, we know that the poverty has made the children become homeless. The strategis to survive are: they are thrif (40%), add their time to work (13.13%), move to other place (11.11%) and save their money (15.56%).
Estimation of Solar Radiation using Artificial Neural Network Suprayogi, Slamet
Forum Geografi Vol 18, No 1 (2004)
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Abstract

The solar radiation is the most important fator affeccting evapotranspiration, the mechanism of transporting the vapor from the water surface has also a great effect. The main objectives of this study were to investigate the potential of using Artificial Neural Network (ANN) to predict solar radiation related to temperature. The three-layer backpropagation were developed, trained, and tested to forecast solar radiation for Ciriung sub Cachment. Result revealed that the ANN were able to well learn the events they were trained to recognize. Moreover, they were capable of effecctively generalize their training by predicting solar radiation for sets unseen cases.
Statistical Quantification for Supporting Geographical Research in Natural Resource Inventory and Evaluation Martha, Sukendra
Forum Geografi Vol 13, No 2 (1999)
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Abstract

In supporting geographical researches, statistical quantifications are required to assist natural resources inventory and evaluation. Statistical analysis for any research either in  sciences will represent the result quality of the research. To do this, all research system implementations. Started from data collection, process to their presentation need to apply quantitative statistics data and numbers. This paper is meant as introducing all geography researchers in conducting researh tasks, particularly in the field natural resources inventory and evaluation.
Study of Merkusii Pine Resin Using Aerial Photograph Setyowibowo, Mohammadi Ichsan
Forum Geografi Vol 11, No 2 (1997)
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Abstract

This study is intended to find out the sap products of Pines mercusii Jungh at de Vries per are unit using variableness of the air photograph i.e. tree height, crown diameter and aree number per hectare. Its result analysis used regression analysis with the programe aid of SPSS for windows. The analysis outcome shows that, crown diameter tree height, relation between tree height and number of tree per hectare and relation between crown diameter and tree number per hectare, there are influence to the sap production per area unit. The formula mode isG = -418,963 + 534314 (D) – 1,316 (TH)2 + 0,142 (TH x NC) – 1,287 (D x NC)Where:       G     =     sap production (kg/hectare/15 days)                      TH   =     average tree height in meter                      D     =     average crown diameter in meter, and                      NC  =     tree number per hectare with determination cooeficien as 0,82, Aest of significant for 0,01 test level
Perubahan dan Pergeseran Paradigma Perencanaan Pengembangan Perkotaan Royat, Sujana
Forum Geografi Vol 9, No 1 (1995)
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Abstract

Dalam mengkaji pengembangan perkotaan di Indonesia, maka terdapat dua pandangan dasar yang dapat diterapkan untuk mengupas permasalahan serta mengenali berbagai problematika yang dihadapi. Pertama, dengan menggunakan cara pandang kota sebagai dimensi fisik dari kehidupan dan kegiatan usaha manusia yang memberikan berbagai implikasi pada aspek-aspek pembangunan. Kedua, kota dipandang sebagai bagian dari suatu sistem yang menyeluruh dari kehidupan dan kegiatan usaha manusia dan masyarakat yang saling terkait dengan upaya pada aspek-aspek pembangunan lainnya. Kupasan permasalahan yang dihadapi dalam pengembangan perkotaan ini pada dasarnya ditujukan untuk mengenali visi dan paradigma yang digunakan dalam melandasi upaya-upaya pengembangan perkotaan tersebut. Melalui pengenalan terhadap visi dan paradigma tersebut, maka akan dapat dikenali pula perubahan dan pergeserannya yang sejalan dengan corak dan sifat permasalahan pengembangan perkotaan yang dihadapi dalam kurun waktu yang bersangkutan. Serta diarahkan untuk memperbaiki dan menyempurnakan, dengan didasarkan atas problematika dan tantangan yang dihadapi kini dan masa mendatang dalam konteks pengembangan perkotaan. Kesimpulan dari studi ini adalah bahwasanya visi dan paradigma-paradigma yang berlaku pada pengembangan perkotaan pada dasarnya merupakan cerminan dari harapn dan kebutuhan pada pelaku-pelaku yang terlibat dalam pengembangn perkotaan tersebut dan tingkat perkembangan serta kemajuan yang dicapai oleh masyarakat secara umum pada kurun waktu yang bersangkutan.
Study on Runoff Debit in the Catchment Area of Waduk Gajah Mungkur Wonogiri Anna, Alif Noor; Priyana, Yuli
Forum Geografi Vol 5, No 1 (1991)
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Abstract

AbstractWater resource is one of natural resources, that is very vital. It needed to be used and to be kept throughly. For those purposes need good and directed plan, in which one of the basic component of it plan have to be supported by available a complete hydrological data and it analysis. One of hydrological data analysis is to estimate runoff of catchement area, which can be used for planning the hydrologi construction. This research aim: 1) to calculate the run off discharge by thornwaite Mather Method, monthly, annualy, and the average on the catchment through a sample of Keduang, Temon, Alang, and Wuryantoro areas; 2) to analyze the difference of the run off discharge (at no. 1) by observation resulted from trend analysis. Based on the calculation, it appears, thornwaite-mather method showed that high discharge (moreover limit 0) in dry month. From the research result, it appears, that calculation discharge graphic had lower differentation than observation discharge graphic. From sample of catchment areas that have been investigated, from the highest to the lowest deviation was Wuryantoro catchment area (78,8%), Temon catchment area (47,38%), Alang catchment area (46,45%), and Keduang catchment area (24,98%) respectively). The condition like above caused by intervation of man. Not only did he influence vegetatively, but he influenced technically as well. From these conservation, technical conservation (flood and construction and reservoir) was the highest influence to run off discharge calculation. The run off discharge that was calculated by thornthwite-Mather Method based on air temperate, rainy, altitude, and water holding capacity only, but groundwater supply didn’t be calculated.
Pattern Analysis of Vegetation and Structure Mapping of Yard Plant in Gatak District, Sukoharjo Anif, Sofyan
Forum Geografi Vol 17, No 1 (2003)
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Abstract

Target of research is to know 1) level of type variety (diversitas) and mount the closeness (densitas) of lawn crop which conducting in region of District of Gatak of Sub Province Sukoharjo; 2) pattern of mapping of lawn crop which conducting in region District of Gatak of Sub Province Sukoharjo of pursuant to variety level and its closeness. This research is field survey done with the method of multi stage that is stratified purposive of sampling and random sampling. Focus the survey is does the stocktaking of lawn crop which conducting in house lawn. To know the structure of vegetate data processed by using formula Cox (1989) to know the closeness level, while to know the level of species variety, data analyzed to use the index of diversities Simpson. Pursuant to result of inferential solution and research 1) result analyze the structure of vegetate of lawn crop indicate that (a) District Gatak have the level of high diversities lawn crop, with the index diversities of equal to 0,84159 and index predominate equal to 0,15841, and also highest PIE 0,20657 and PIE lowerest of equal to 0,00032. Species of lawn crop having high domination that is melinjo (Gnetum gnemon), (b) closeness of lawn crop at every countryside in District Gatak of included in category very meeting of because  relied on by a closeness value of every countryside more than 75%. Crop found in research are having high closeness level for example: melinjo, banana, mango, rambutan, papaya, tapioca, and coconut, while crop having low closeness level for example: jambu mete, tapak doro, flower pukul empat; and 2) mapping of lawn crop cover the function value and amount of lawn crop found by a number of 57 type of lawn crop found in researh area, can be grouped to become 5 faction that is drug crop, vegetable faction, fruit crop, decorative crop, and protector crop.
Decreasing of Participation of Youth in Agricultural Sector (Case Study at Delanggu Village, Delanggu, Klaten) Amin, Choirul; Aminudin, Muhammad Farid; Dilahur, Dilahur; Priyono, Priyono
Forum Geografi Vol 14, No 2 (2000)
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Abstract

This study is carried out in Delanggu, Klaten, that has high productivity of rice but undergoing a decrease in the role of the sector of agriculture. The goal of this study is to observe young people departicipation in the sector od agriculture and fators that influence it. The method used is survey method. The population is all of the young people in Delanggu, 1.419 peoples. The sampling uses stratified proporsional quota sampling where respondents are divided into three groups of age, 15 – 19 years old, 20 – 24 years old, and 25 – 29 years old. Every sampling in eah group is taken 5% proportionally, with its homogenates consideration, while the characteristic, which has determined in order to fulfil the number of determined quota in each age group. Collected data is presented in the form of frequency and cross table. Qualitative data analysis uses logical thought, deducyive – inductive, analogy ang comparison, whereas analyzing frequency and cross table uses quantitative data analysis. The use of both analysis is adjusted to the data and goal of the study.

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