Achmad Ghozali
@itk.ac.id
Urban and Regional Planning
Institut Teknologi Kalimantan
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
A. Ghozali, D. N. Tufail, and F. D. Astanto
AIP Publishing
Purris Rachelina Girsang, Nur Anggraeni, Nava Chairunisa Nabila, and Achmad Ghozali
AIP Publishing
A Ghozali, D N Tufail, and P R Girsang
IOP Publishing
Abstract In 2020, the first year of the Covid-19 pandemic provided a valuable experience for city policymakers. As one of the epicenters of Covid-19 in East Kalimantan, Balikpapan City has also made various efforts to suppress the transmission of Covid-19, mainly focused on minimizing the urban mobility rate. This study was conducted to track the effectiveness of policies applied to the number of Covid-19 active cases in Balikpapan City. This study performs the Spatio-temporal Getis-Ord Gi* statistic to determine the characteristics of changes in the concentration of the Covid-19 active cases and calculate the correlation of the time data. The results showed that during the first year of pandemic and application of the travel restriction policy, hotspots were always formed in the potential economic sub-districts, which became the business center of Balikpapan City. In addition, the implementation of significant travel restriction policies has a strong correlation with the tendency to decrease the active case number of COVID-19 in each policy issue date.
Virgilia Anna Gustiniani Pakalla and Achmad Ghozali
IOP Publishing
Abstract The relocation of the capital city of Republic Indonesia to East Kalimantan, which is called Nusantara, will certainly increase resident migration to East Kalimantan. This relocation will affect the tourism activity needs. Although, it can also threaten the existence of water system, flora and fauna, pollution and other environmental damage. Samboja, one of Subdistrict of Kutai Kartanegara, is the buffer zones of Nusantara. Samboja has a great potential for developing agritourism because it has the largest land area and amount of agricultural production in Kutai Kartanegara. The combination of agriculture and tourism or called agritourism is a form of creative economic development in the agricultural sector that provides added value to agribusiness and also can contribute to the rural environment preservation. Therefore, this research was conducted to determine the agritourism development in Samboja by identify the agritourism potential using scoring analysis with the 4A approach, namely Attraction. Accessibility, Amenity and Ancillary. The results of this research showed that the potential attractions in Samboja Subdistrict are agricultural land, various agricultural commodities, and agricultural activities carried out in the forms of planting, management, and harvesting. Then, the villages with high potential classification for agritourism development are Handil Baru, Sanipah and Karya Jaya.
Asri Prasaningtyas, Marita Wulandari, and Achmad Ghozali
IOP Publishing
Abstract Kampung Atas Air at Margasari Village, West Balikpapan Sub-District on Balikpapan City is a densely populated settlement where most of the houses are located on the tidal land of the sea. That location is an area that has a high potential for microplastic pollution due to existing settlement activities. Microplastic is plastic particles that smaller than 5 mm in size sourced from large or macro-sized industrial, household, and plastic weathering activities. Microplastic samples were taken from two media, water and sediment. Microplastic identification was carried out under a microscope with 10 times magnification. The result of this observation shown 4 types of microplastic, which are films, fragments, fibers, and granules. Fiber is the most common type found in this observation. It came from community activities such as fishing and washing clothes.
R Muliana, A Ghozali, and Ariyaningsih
IOP Publishing
Abstract Sanitation on the domestic wastewater management (WWM) component was a severe concern in the slums of Margasari Village, which has two characteristics area, administrative neighborhood above water, and neighborhood on land. The universal access to adequate sanitation was only 35.8%. Therefore, Margasari Village belonged in the priority zone of sanitation risk at a very high level for domestic wastewater problems. The purpose of this research was to identify important factors to increase the adequateness sanitation on the black water domestic WWM in Margasari Village. The questionnaires spread on 345 household samples taken at 32 neighborhoods as the data collection method. Identification factors had done through two stages of analysis. The comparative descriptive analysis used to determine characteristics of the domestic WWM black water type obtained the findings that the neighborhood above water had low users percentage of adequate black water domestic WWM. Second, binary logistic regression analysis was to identify the factors that affect the adequatess domestic WWM of black water type, four significant factors encompassing household income, knowledge level, financing willingness, and ease of technology. Significant factors not only increased adequate sanitation, but also contribute to the development of appropriate environmental and public health policies related to slums settlement.
Sheilla Rully Anggita, Achmad Ghozali, and Hamdan Hadi Kusuma
IOP Publishing
Abstract ZnO is a semiconductor material that advantages in various applications, especially for photocatalysts. The catalytic activity of ZnO is much better than other materials, because ZnO can absorb light in a wider spectrum. The double layer ZnO/ZnO:Ag with various concentrations of 0.1 M, 0.3 M, and 0.5 M has been successful deposition. Double layer ZnO/ZnO:Ag deposition was carried out by sol-gel method and spray coating deposition technique. The results showed that the concentration of double layer ZnO/ZnO: Ag increased with the increase of the absorbance value. From the transmittance spectrum attempt was made to estimate the value of energy band gap of the samples. Double layer ZnO / ZnO:Ag energy gap in the range 3,2-3,3 eV. The energy gap of Double Layer ZnO/ZnO:Ag decreases with increasing concentration to 0.5 M. Double layer ZnO/ZnO: Ag 0.5 M has the smallest energy gap of 3.21 eV. Photodegradation testing was carried out to determine the ability of samples to photocatalytic activity at methylene blue dye. The optimum photocatalytic activity is indicated by the largest percentage of degradation. The largest percentage of degradation was shown by Double layer ZnO/ZnO:Ag 0.3 M at 81.5%.
A Ghozali and E D Syafitri
IOP Publishing
Abstract In Balikpapan the growth in the number of hotels increased significantly over the past 10 years but the income earned from this sector has tended to decline. Currently, it is found that hotel development growth becomes imbalance due to overcapacity and only exist in several regions. This study aims to identify hotel distribution patterns and hotel location clustering analysis based on the occupancy rate conducted in two stages using the Average Nearest Neighbor (ANN) and hot spot analysis method. In overview, hotels in Balikpapan, both star hotel and non-star hotel, significantly clustered spatially around the centers of urban activities. This grouping is not linear with the occupancy rate distribution pattern. The occupancy rate pattern of star hotels shows a spatially clustered structure with z-score to 2.69 (most significant). Conversely, the occupancy rate of non-star hotels has a random pattern with a z-score is closest to 0 (not significant). However, in general, the constructed hotels in an area which has high accessibility and closes to urban centers is the hot spot point for significant high occupancy rates.
M B W Aji and A Ghozali
IOP Publishing
Abstract Until 2017, the economy of Penajam Paser Utara Regency was still dominated by the primary sector of agriculture, plantations, and mining. The exploitation of this sector is oriented ateconomic growth resulting in environmental degradation and a decrease in ecosystem quality as indicated by the intensity of natural disasters. Notably, over the past eight years, there have been forty-six natural disasters. Therefore, the land use planning in Penajam Paser Utara Regency must be evaluated based on the carrying capacity of the environment. One possible approach is an ecosystem services assessment to ensurethat future land use planning can match its ecosystem carrying capacity. The purpose of this research is a three-stageevaluation of land use planning in Penajam Paser Utara Regency based on the characteristics of itsecosystem services. First, environmental support analysis based on ecosystem services uses the Analytical Hierarchy Process assessment to obtain the weight of each variety. Then, thecalculatedcurrent carrying capacity index is transformed into maps with five classifications namely very low, low, medium, high and very high. The study found twenty-two types of ecosystem services in Penajam Paser Utara Regency and the most dominant is the ecosystem service for energy provision with an area of 119.979 Ha.
A Ghozali, N Hasanah, and Subchan
IOP Publishing
Abstract Limited land in the downtown area as well as the increasing amount of new activities centre causes residential development leads to North Balikpapan. This area is an urban fringe with vast protected forests as buffer zone and catchment area for the city and surrounding area. Land conversion in this area will increase hazard risk of inundation, water quality decrease and increased CO2 emissions. Therefore, development should be maintained environmental stability. One of the rights applicated approach is carbon footprint that is capable to measure the balance between production and absorption needs of CO2 emissions. To find the optimal land allocation, we used carbon footprint calculation from the household activities, identify the factors of settlement growth, and use Linear Programming analysis. Analysis’ results show that settlement activities in North Balikpapan produce 108.362,4 tCO2/year or equivalent with 618,50 Ha green space. Meanwhile, the development of settlement in North Balikpapan is affected by social demographic, developer initiative, environmental condition, public facilities availability, economical structure, and policy factors. According to those factors, optimal allocation of settlement area in North Balikpapan is only about 4,510.01 Ha. With that condition, it still able to absorb CO2 emissions from inside or outside the area around 2.751 tCO2/year.
D Fitrianingsih and A Ghozali
IOP Publishing
Abstract Spatial Plan of Balikpapan City in 2012-2032 decides Karang Joang Village as a strategic area of economic interest. As a consequence, the development of regional infrastructure was built to support the emergence of new centers of activity, such as State Universities, highways and regional industrial area. Therefore, the price of land in Karang Joang has doubled over the past two years. High land prices tend to be used for commercial activities. On the other hand, zoning activities are needed to ensure the harmony of space and control the growth of land outside of its designation. Land use that is not in accordance with the plan as a result of high land prices can cause many land conflicts such as land speculation, inappropriate land use, and other problems. A land pricing model is needed as a fundamental for zoning of spatial utilization activities to minimize land conflicts. The land price model can also be used by the government to make policies or space planning in accordance with the development of land prices. The Euclidean distance method from GIS was used to identify land characteristics against factors affecting land pricing and regression analysis to construct land prices models. We found that there were nine factors that influence land prices, namely the distance of land to government centers, markets, universities, hospitals, arterial roads, collector roads, industrial areas, availability of electricity services and land use. Among these factors, the availability of electricity services contributed the largest increase of 252,234 IDR and the land that close to the industrial estate tended to decrease by 648 IDR/m2.
Achmad Ghozali and Rossana Margaret Kadar Yanti
Author(s)
Balikpapan city has transformed from oil city to trade and industry center. In the last 5 years, industry and trade sectors experienced annual economic growth by more than 25%, while mining had only 0.05%. This condition raised a strong economic attraction which increased urban activities and population growth, especially urbanization process. Nevertheless, the growth of the city had a challenge in the urban water supply. Due to natural condition of the city, Balikpapan does not have a large river, making water supply conducted by reservoirs relying on rainfall intensity. In line with population growth and conversion of green open space, the city government should consider to the allocation of land use effectively based on sustainable water resources. As the associated pressure on water resources continued to increase, it is crucial to identify the water demand future in Balikpapan City related to domestic and non-domestic activities as the first step to optimize land use allocation. Domestic’s activities...