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Application GIS to Analyse Crime Risk in Bandung Application GIS to Analyse Crime Risk in Bandung Moh. Dede, Iwan Setiawan and Asep Mulyadi Department of Geography Education, Universitas Pendidikan Indonesia, Jalan Dr. Setiabudhi no. 229, Bandung, Indonesia [email protected] Keywords: Crime; GIS; Security Abstract: This study aims to determine various factors are affected crime occurrence and discover crime risk distribution in Bandung using geographic information system (GIS) technology. It is to achieve suitable action against crime for mutual security. As quantitative research, the correlation of each factor is obtained from statistical test, then a decile rule used to know the value distribution. Eastman equation require score and weight from the correlation coefficient and value distribution for overlay analysis using GIS software to result crime risk distribution in Bandung. Correlation test identified that historical crime accidents, public facilities, and residence domination are most influence crime occurs, because crime needs suitable condition like place, time, and target. The resulted map of crime risk distribution shows 39.02 and 16.69 percent or more than half area of Bandung has very high and high risk. Based on the analysis, crime risk area agglomerate in the western and central of city are known as central business district. In addition, the temporal pattern of crime risk increase at 18.00 to 24.00 pm who coverage almost three-fifths area of the city when citizen activity is highly. 1 INTRODUCTION analysis processes of crime to obtain information about crime patterns, trends, and dynamics relating Application geographic information system (GIS) as to location, time, and target or victim (Levine, a technology has grown in various scientific fields. 2006). Application GIS to analyse crime in a region SIG is able to prove itself as efficient and effective gives the consequence that any spatial analysis of system in managing various spatial data and crime should use quantitative approach (Ratcliffe, information, so a new information can be obtained 2010). according to user needs (Getis et. al., 2000). Crime Previous studies about GIS in crime analysis as a pathological social and spatial phenomenon were exercised by some researchers. Balogun et al. requires appropriate prevention with information (2014) developed crime hotspots, areas deficient of technology to reduce the intensity, e.g. to mapping security outfit, areas of overlap and areas requiring crime risk distribution using GIS (Eman et al., constant police patrol in Benin City using buffering 2013). As analysis. Then, Olajuyigbe et al. (2016) revealed a transport route cutting through Akure metropolis is occurred in Bandung, it listed the city as highest prone to crime activity using neighbourhood and crime region in West Java Province (Bandung statistical analyses with GIS. Other it study Police Dept., 2016). To response crime threat in demonstrated a relationship between the property Bandung, GIS have a role to determining crime risk crime rate with household income and poverty in locations through geospatial and geo-processing Malaysia using Likelihood Ratio Statistic (LRS) and analyses based on various environmental and social Space-Time Normal Mixture Models by Zakaria and factors are influence crime action in the region Rahman (2016). (Wing and Tynon, 2006). Different from previous studies who only reveal Crime study using GIS has developed in several some social and environmental factors using countries as part of internal security operations. In statistics, geo-statistics, and range analysis such as United States and Australia, crime analysis using neighbourhood, LRS, and buffering analysis. This GIS raises a term crime mapping, i.e. as spatial study uses statistical analysis result as input data for overlay analysis, so it will generate new information security field, especially to mapping and crime based on crime factors. Whereas, this study aims to y (B M v ć 7). determine various factors are affected crime In some countries such as Australia, Canada, and occurrence and discover crime risk distribution in the United States, spatial analysis of crime using Bandung using GIS. The scope of factors are limited GIS generally uses hotspots, statistics, and geo- to eight essential variables from Stark (1987), statistics model (Ferreira, et. al., 2012). In Indonesia, Breetzke (2010), and FBI (2012). the study of crime analysis using GIS generally only Analysis about crime risk distribution in input data and serve information about crime sites, Bandung purposed to know a correlation between both conventional and web-based GIS (Maulana, historical crime accidents, public facilities, residence 2016). domination, road network, security posts, land use, population density, and poverty distribution with crime action. so spatial nor temporal patterns of 3 RESEARCH METODHS crime risk in the city can be obtained by overlay analysis using GIS. Correlation analysis using Values for various factors are affect the distribution inferential statistics method is suitable with data of crime in Bandung obtained by correlation analysis characteristics and overlay analysis used is union to as a part of inferential statistics. The coefficient get all information (Raju, 2013). Based on the result is used as a value to weighting all factors and analysis, information about center of Bandung has determining potential crime risk locations through very highly crime risk status. Then, region has far overlay analysis on GIS software (Raju, 2013). away from center and east of the city crime risk is Each factor is determined by the correlation decreasing. value with crime distribution using correlation analysis – Pearson Product Moment Correlation formula (if the data is normally distributed) or 2 LITERATUR REVIEW Spearman Rank Correlation (if the data is not normal distribution) – to resulting some value are used as a weight. For scoring or classifying scores in 2.1 Crime and Geography each factor using the decile rule (Chen, 2014). in detail the research schema and data acquisition Crime is an act that violates the rules or laws who presented in Figure 1. prevailing in society and harms other persons, each violation has consequences such as penalty sanctions or other actions from law authorities (Buikhuisen, 1985). In the study of geography, crime phenomenon discusses on geography of crime as a part of human geography. it was born because each crime events are related by space, time, human activity, and pattern (Evans and Herbert, 2014). According to Stark (1987), FBI (2012), dan Breetzke (2010), there are several essential factors that cause a location to be risk of crime acts, such as (1) historical crime, (2) public facilities, (3) residence domination, (4) road network, (5) security posts, (6) land use, (7) population density, and (8) poverty distribution. 2.2 GIS on Crime Analyse Figure 1: Research Schema and Data Acquisition Geographic Information System (GIS) is a designed system to capture, store, manipulate, analyse, organize and display all types of geographical (geo- 4 RESULTS AND DISCUSSION spatial) data of a region data be new information for decision making (Setiawan, 2010). GIS can be used 4.1 Factors are influence Crime in as a tool in analysing and making decision in the Bandung Figure 2: Crime risk distribution in Bandung In this study, each of the factors that influence This condition causes urban residences have many crime is studied in the quantitative approach. For a ideal targets for crime offenders (Sayafzadeh and first factor is historical crime accidents, obtained Hassani, 2014). from crime locations relationship in 2014 and 2015. Road networks becomes the fourth factor, Based on the analysis, it is known that the historical because it have main roles for human physical crime accidents have correlation reach 0.947 which connectivity. The influence of road network to crime indicates very high trend of crime occurred in the in Bandung reaches 0.51 or medium, the existence is same place. This further confirms that crime tends to often used by criminals to staging street or near road be concentrated in certain places even near spaces crimes. Beside it, road network also facilitates with highly crime risk (Newton and Felson, 2015). security personnels to patrol (Summers and Johnson, In this study, public facilities in Bandung as a 2017). second factor are limited to public work and space The next factor is the distribution of security aspects such as famous places of worship, shopping Polri and TNI posts, Inequality the distribution centers, entertainment and tourism spot, health causes the correlation with crime reaches 0.493 or centers, transportation train and bus station, airport medium. Existence of security posts should decrease infrastructure, and educational places are often the opportunities for crime, it presence means that center of people's activities (Batta et. al., 2014). security personnels are always ready to maintain Highly influence between public facilities security can reduce fear of crime, so that its distribution and crime in Bandung reach 0.827. it is existence is used as a fifth factor related to crime in means that attraction and open access to facilities for Bandung (Weisburd and Eck, 2004). public give an opportunity crime action occurring Based on assumption that a crime requires (White, 1999). location suitability which is generally interpreted as To ensure the influence of human activities in land use, it is manifestation of environmental space with crime is used
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