bluuebunny/crossref_metadata_2025 huggingface dataset:
Evaluation The Water Availability in the Dengkeng River Due To Landuse and Climate Changes
Authors: Sarminingsih Anik , Siwi Handayani Dwi , Sutrisno Endro , Zaman Badrus
Published: December 2018

The changes in both climate and land cover have some impact on water resources. Dengkeng watershed, mostly located in Klaten district of Central Java Province. Dengkeng River as one of the raw water source of agriculture and drinking water of society, besides as main water body in the drainage system. Climate change and land use directly affect land use patterns, water availability, flood control performance, local social and economic development, and so on. Therefore, studying the impacts of climate change and land use becomes very important. The HEC-HMS model is used in this study. The observed discharge data used AWLR data of Paseban with period 2005-2017, climate data used nearest post data with observation period 1979-2014. While changes in land use were used data in 1990, 2000 and 2011. The results of the analysis on climate change showed an increase in rainfall both monthly rainfall and maximum daily rainfall. While land use changes can be reviewed on the watershed hydrological parameters, one of which is the change of Curve Number (CN). An increase in CN value has an impact on increasing runoff. However, if viewed against the availability of water, then there is a trend of decline.
Maklews Etnic Woman’s Participation on Environmental Management
Authors: Samderubun Godefridus , Lekatompessy Ransta , Betaubun Apolus , Layan David
Published: December 2018

Woman have strong links with the environmental. In his role as manager of the household, they are more interacting with the environmental and natural recousces.The efforts were made by Maklew’s Woman with cultivated an attitude of assistance and keep maintain their environmental. So the worked together in their culture like kayau in their countryside stil remained until now. But effort of Maklew’s woman to keep maintained the local wisdom “kayau” for environmental management, there has challenges. One of the interesting things to be examined is that of the management of the environment and resources. Maklew is the tribe with a practice of very strong patriarchy. The position of women in Maklew etnic is assumed as “second person”. Specifically in the culture ofetnic maklew, the position of women is considered very important. Women and the land are symbolized as the origin and the source of life, as the giver of life. The study of Maklw’s Womans Participation for environmental management use the feminism and ecofeminism theory and exchanged theory where there are several indicators related by Kayau as a local wisdom to environmental management. The indicators or prepositions are role of division, acces of control and decision making making with kayau perpective. This research was carried out in Wasur village, which is one of villages with the population of indigenous of Marind, located in Merauke, bordering Papua New Guinea. This research includes of qualitative and descriptive approach. Statistic collected is done by observation method, intervieuw using snowball sampling method. Data analysis in this research by descriptive analisys. As the result in the research showing that Maklew’s Woman in participation on environmental management in Wasue Village still strong and kept well. There was show from mutual cooperation from Maklew’s woman on environmental management with Kayau that still continues. All the people especially Maklew’s Woman still kept the local wisdom Kayau in their environmental management activity.
Hydrocarbon Microseepage Potential Area Exploration Using Sentinel 2 Imagery
Authors: Iqbal Januadi Putra Muhamad , Supriatna  , Asriningum Wikanti
Published: December 2018

Hydrocarbon microseepage is a common phenomenon occurring in areas with the presence of onshore oil and gas reservoirs, characterized by the abnormal natural surface spectral landscape characteristics of mineral alteration features and geobotanic anomalies that can be detected by satellite imagery. Therefore, this study aims to find spatial models of oil and gas reservoirs through detection approaches of hydrocarbon microseepage and its relation with the physical condition of study area by utilized the satellite imagery. The parameters used in are alteration symptoms of clay-carbonate, ferric iron, and ferrous iron minerals, geobotanic anomaly symptoms, geology characteristic, and geomorphology characteristic. A multispectral satellite imagery of Sentinel 2 was used as an input for the directed principal component analysis (DPCA) method and vegetation index, to detect mineral alteration phenomenon and geobotanic anomaly, respectively. Then each parameter was integrated using fuzzy logic method giving a result of the distribution of hydrocarbon microseepage area. As a results, this study indicates the presence of hydrocarbon microseepage phenomenon in the research area with the extent of 488,3 Ha or 1,46% of the total of research area. The distribution of hydrocarbon microseepage is distributed in area around oil and gas field, and also linear distributed around Merang River. The distribution of hydrocarbon microseepage in study area also agglomerated in Kasai Formation, area near fault, and the area with lacustrine landform characteristics.
Spatial Temporal Analysis of Coral Reefs in Belitung Tourism Destination Islands
Authors: Raudina Sari Pavita , Saraswati Ratna , Wibowo Adi
Published: December 2018

One of the world’s most spectacular ecosystems in this world is the coral reef. In Indonesia, Bangka Belitung is one province which has beautiful coral reefs and has become one of the tourist attractions. However, there might be a loss of the coral reefs area that can be caused by natural factors and human activities. This study aims to analyze the distribution and the changing of coral reefs that occurred in the islands of tourist destination in Belitung Regency from 2005 to 2018 and to analyze its factors. Landsat satellite imageries used in this study are Landsat 5 TM, Landsat 7 ETM+, and Landsat 8 OLI/TIRS. The distribution of coral reefs will be determined by image data processing. Then, overlay methods are used to analyze the changes and its factors. Based on the analysis, in the year of 2005-2018, there are 3.93 km2 areas of coral reefs that have decreased. On the top of that, there are 1.34 km2 or about 34.04% of coral reefs areas have decreased that caused by non-natural factors. It can be concluded that the decreased of the coral reefs occurred in Belitung tourism destination islands, are still dominated by natural factors rather than a non-natural factor.
Openspace Transformation in Conservation Area
Authors: Harsritanto Bangun IR , Dewi Kezia ES , Hetwisari Tia
Published: December 2018

People demands on open public spaces were never declined. Nowadays urban parks take great role again as green area of the city and place of people interactions. In other hand, conservation shall be protected as part of historical site. Both area have requirements to be followed. The intersection between open space transformation and protected conservation area become this study object. The purpose of this study is to investigate and analyze the transformation of open space in conservation area. The selected cases will be in Kotalama Semarang and Kotagede Yogyakarta. The study perform site observation and study cases to investigate and literature review to analyze the datas. The results were openspace transformations are unavoidable, the transformation are related to function and size, openspace can strengthen the conservation images.
Mangrove Cultivation (Avicennia Marina) as an Effort for Mangrove Rehabilitation in the Ponds Bare in Belopa, Luwu Regency
Authors: Sulaiman Bustam , Nur Bambang Azis , Lutfi Mohammad
Published: December 2018

Mangrove forest suggest a high degradation rate due to its utilization pattern which is ignore conservation aspect. In order to manage of mangrove forests in a sustainable manner, it is required any knowledge about the economic values which is useful for local community. This study aims to rehabilitate mangrove forests in Belopa, Luwu regency that have been turned into ponds by planting Avicennia marina mangroves around the ponds to expand land cover in the empty ponds and its fruit can be utilized for processed foods. This research is the action research. Estimated area of mangrove cover that is more than 10 years old is estimated that in each hectare of ponds will cover of about 2000 m2 (20%), 3000m2 (30%) and 4000m2 (40%) with the distance of each tree is 4 meters in one hectare, the total tree in one hectare is 100 trees (pond 1), 150 trees (pond 2), 200 trees (pond 3) and 200 trees (pond 4).
An Overview of Marine Mammals in Eastern Indonesia 2016: Implications for Marine Mammals Research and Conservation
Authors: Mamayu Utami Ikha Jayanti , Soeprobowati Tri Retnaningsih , Sugianto Denny Nugroho
Published: December 2018

Eastern Indonesia is known as the center of marine biodiversity of the world as well as habitat and marine mammal migration path. Not all marine mammal events in eastern Indonesia are well documented. The purpose of this study was to determine the occurrence of marine mammals in eastern Indonesia in 2016. Data collection done through observation, indepth interview with the community and experts. The results of this study were 8 (eight) occurrences of marine mammals which were in Mollucas, North Mollucas and West Papua Provinces with the highest incidence in August. That marine mammals were Duyung (Dugong dugon), Sperm Whale(Physetermacrocephalus), Risso’s Dolphin(Grampus griseus), and 2 types of unidentified Whales. The marine mammals exist were deliberately netted by people, stranded, trapped in fishing nets or deliberately commercialized. This marine mammals stranded occurence indicate the requirement of strategies development for handling these protected marine ‘biota’ to store their population.
Land Cover Change of Post-Tin Mining Land Conservation Area and Its Surroundings in Perimping Sub Watershed, Bangka Regency
Authors: Erthalia Meike , Supriatna  , Damayanti Astrid
Published: December 2018

Tin mining is one of the land uses that causes physical damage to the land. Degraded land due to the mining activity requires a conservation. Conservation of post-tin mining land in Perimping Sub Watershed consists of reclamation and revegetation by planting kinds of fast-growing plants and cover crops. As land management, conservation is conducted to establish the diversity of land cover and to recover the land quality to be more productive for the local people. This study aimed to analyze the land cover change in land conservation of post-tin mining area. Moreover, also to identify the condition of post-tin mining land which has been conserved. Land cover map of 2011, 2014, and 2017 were produced from Google Earth imagery. Field validation was conducted to determine the existence of cover types on conservation land and interviews were conducted to find other impact of post-tin mining land conservation for local people. The result shows that land cover change in post-tin mining land conservation area over 6 years dominated by escalation of land cover such as mining, plantations. Monitoring of land cover change in conservation area is important to measure the effectivity of land conservation in post-tin mining area.
Potential Utilization of Sewage Sludge from Water Treatment Plant as Brick Material
Authors: Samadikun Budi Prasetyo , Rukayah Siti , Priyambada Ika Bagus , Lumbantobing Sry T. Romaito , Budihardjo Mochamad Arief
Published: December 2018

One of the results of the water treatment process is the sludge. Generally, the processed sludge from the water treatment is collected and delivered to a landfil. With the delivery of sludge waste, it requires additional cost as a levy in handling sludge waste. Therefore, it is needed to innovate on the recycling of sludge. The waste recycling process is expected to minimize the residual impact of the Water Treatment Plant. The process of waste recycling can be done by utilizing sludge from water treatment, which is brick making process. The benefits can eliminate environmental problems and also some economic problems. This study aims to determine the potential of sludge from water treatment plant to be added for brick making by investigating the physical and characteristics of sludge. The research findings show that sludge waste has the potential to become a brick raw material depending on the nature and clay microstructure
Efficiency Analysis of CBA Full-scale Hospital Waste Water Treatments in Indonesia Using Combined Biological AOP System: Investigation on Operating Conditions, Treatment Efficiency and Energy
Authors: Hadi Pranoto , Rame Rame , EvFajar Wuryadi , Mohamad Sofie , Ary Sulistyo Utomo , Budi Haryo Raharjo
Published: December 2018

Combined biological AOP system, or CBA, are increasingly being used in Indonesia to treatment hospital waste water, that are otherwise difficult to treatment in conventional methods. CBA catalytic ozonation are now used for over 579 hospitals, making this tool a major phenomenon for high adopt hospital waste water treatments in Indonesia, and one that has experienced great expansion over the past three years. The question of whether the CBA is a good or a bad tool for the treatment hospital waste water depends on many parameters. To respond to this question, it is necessary to investigate on operating conditions, but it is also very important to gather more data and conduct further research on treatment efficiency and energy. In this paper, we examined and discuss to gain a better understanding of the CBA environmental technology and of its impacts. About 100 CBA Full-scale Hospital waste water treatments have been investigated, and it was in Indonesia from eight provinces. CBA demonstrate good removal efficiency of macro-pollutants from hospital waste water and meet the requirements as per LH R.I. Number 5 Year 2014 on Wastewater Quality Standard and LHK R.I. Number P.68 / Menlhk / Setjen / Kum.1 / 8/2016 Concerning the Quality Standards of Domestic Waste Water. Various parameters of macro-pollutants such as pH, temperature, TDS, TSS, BOD 5, COD, oil fat, and MBAS also amonia nitrogen and total coliform were analysed to identify the performance of CBA. We obtained the average energy consumption per cycle is 0.504 kWh, capacity V m3/hours which treatment cost Rp 1.478/m3 and 60,96%-94,00% removal efficiency of macro-pollutants. CBA catalytic ozonation reported here is very efficient and environmental friendly for treatment hospital waste water.
Phytoremediation of Lead Contaminated Soils using Cordyline fruicosa (L)
Authors: Lina herlina , Budi widianarko , Henna rya sunoko
Published: December 2018

Phytoremediation is an eco-friendly and low cost potential strategy for cleaning up of heavy metals from contaminated soils. Selection of promising plant is an important approach for successful phytoremediation. In this study the role of Cordyline fruicosa (L ) plants as a potential phytoremediator to soils contaminated with lead (Pb) was investigated. Pot culture experiments using Cordyline fruicosa (L ) with different level of lead 250, 500 and 750 mg Pb kg-1 soil. The growth parameter biomass root and leaf, Pb accumulation in plant and photosynthetic pigment content were measured after 40 days. The results showed that the increase lead concentrations caused a reduction in most growth parameter and photosynthetic pigment content. On the other hand the lead accumulation in root and leaf was increased by increasing lead concentrations.
The Design Of Grain Drying Oven Using Residual Exhaust Gas From Diesel Engine With Heat Transfer Analysis
Authors: Peter Sahupala , Daniel Perenden , Christian Wely Wullur
Published: December 2018

The drying process plays an important role in the preservation of agricultural products. To this day, the drying process of rice grains harvested by the farmers in Semangga District, Merauke Regency, has always used sunlight. However, during rainy season, the farmers cannot dry their grains, and if such thing happens for a long time, it will cause decayed grains. The drying characteristics of a material are necessary in designing the dryers in use. The method used in this research was the design of grain dryers, which took the form of heating oven, by utilizing heat from the residual exhaust gas of diesel engine. The exhaust gas coming out of the exhaust manifold would be flowed through the heating pipe in the oven heating chamber, then through the convective heat transfer process, followed by conductive heat transfer, and then the heat flow conduction would be transmitted to the drying chamber. The objective of this research was to design grain dryers by using Diesel engine's residual exhaust gas, and to calculate the efficiency of grain dryer using heat transfer analysis. The bulk gas temperature in the exhaust gas section for hot fluid in the pipe is 371.55 K at a motor rotation of 2400 rpm, with the flow rate of the incoming exhaust gas heat mass of 0.01798031 kJ/s. The velocity of incoming exhaust gas mass is 36.75 kg/s, with the comprehensive heat transfer coefficient on the inlets of 92.7334404 W/ m2.oC. The heat transfer in the air section/ fluid section in the inner pipe is 351.1351 K, while the convective heat transfer coefficient in exit pipe is 8.010580984 W/m2.oC, thus obtaining Comprehensive heat transfer of 40.2312698 W/ m2.oC. The logarithmic mean temperature difference (LMTD) in the evaporator is 35.69590751oC with total heat transfer area of 084178 m2. With 2400 rpm motor rotation, the total heat transfer at the heat exchanger, which is the usable maximum heat, is equal to 0.226296111 kW; while the effectiveness of heat exchanger is at 60.95%. The energy used to evaporate the water and the amount of convective heat transfer from dry air to the product are 0.03696 kW, while the amount of air energy used is 0.05150 kW, obtaining the efficiency of the drying machine at 71%.
Analysis of a Prey-Predator Fishing Model for Harvesting with The Limited Effect of Density and Toxicity
Authors: Dita Anies Munawwaroh , Sutimin  , Siti Khabibah
Published: December 2018

We proposed a model of prey-predator fishing by considering proportion of prey density and toxicity in ecosystem. The model is analysed to study about biological equilibrium, bionomic equilibrium and its stability. The aim of the model is to determine the optimal sustainable harvesting for each species. The optimal harvesting is resulted from Pontryagin’s maximal principle. The global stability of coexistence equilibrium is analyzed from Lyapunov function. The effect of toxicity leads to the decreasing of sustainable harvesting.
Mercury toxicity potential from artisanal and small scale gold mines in Lebong Regency, Bengkulu Province
Authors: Ali Munawar , Hery Suhartoyo , Putri Suci Asriani
Published: December 2018

Artisanal and small scale gold mining (ASGM) is considered as the largest source of mercury pollution worldwide. The ASGM has been practiced for years in the area of Lebong Regency of Bengkulu Province. To extract gold from the ores, miners use a simple technique called Gelondong. This practice involves amalgamation process which forms amalgam, a mixure composed of mercury and gold. These amalgamation generates liquid and solid wastes (tailings) which still contain significant amount of mercury. Consequently, ASGM activities can potentially create mercury contamination of the environment, especially aquatic ecosystems. This study was aimed to investigate the concentration and distribution of total mercury in rivers to which wastes from ASGM communities in three villages of North Lebong District were dumped. Water and streambed sediments along the rivers were collected and brought to the laboratory for total mercury analysis. Data showed that total mercury was not detected in the river water but high in the river sediments with high variations among lactions from 0.11 to 110.37 mg kg-1. Apparently, total mercury tended to decrease with the distance from it source. High amounts of mercury in the river sediments could potentially spread to wider area and cause bioaccumulation in aquatic organisms, especially fish which can be dangerous to consume.
Assessment of Water Quality in Cilutung Watershed
Authors: Alvira Oktariani , Eko Kusratmoko , Kuswantoro
Published: December 2018

Water is very valuable resources that provide people and other living things. Besides the need for water for drinking, water resources play an important role in such as livestock, fisheries, water for irrigation and water recreation. However, water quality of the rivers may degrade due to the variation of land use as human activities increase. Cilutung watershed is dominated by the agricultural land use which in many studies shows that agricultural land use has a great impact on river deterioration. It does not affect only the physicochemical of water, the excessive amount of nutrient may harm the biotic ecosystem. The purpose of this study was assessing water quality of the rivers in Cilutung Watershed and the contributing factors using physicochemical and biological parameters. According to ANOVA and PPM calculations, water quality was affected by land use spatially and river discharge temporally. The overall results showed that the rivers were categorized as slightly polluted referring to WQI, BMWP, and Saprobic Index. In general, all water quality parameters measured in Cilutung watershed met water quality standard Class III as stipulated in Indonesia Government Regulation No. 82/2001. Therefore, water sources were still acceptable for fisheries, animal husbandry, and water for irrigation.
Acclimatization, Water Intake Adequacy Rate, Individual Characteristics and Heat Strain: A Cross-Sectional Study on Heat Exposed Workers
Authors: Kemala Imas Tejo Sutono , Yuliani Setyaningsih , Suroto
Published: December 2018

Someone will have a greater risk of experiencing heat strains if working at a workplace exposed to heat. In addition to the heat from the body’s metabolic results and the result of heat exposure from the work environment, heat strain on workers also influenced by individual factors. The extent to which an individual’s body can tolerate heat exposure is determined by the condition of his body. Physiological changes will occur in the body of workers who exposed to heat. The objective of this study was to analyse factors related to heat strain such as acclimatization, water intake adequacy rate, and individual characteristics. The research was an observational analytic study and study design that used was cross-sectional. The population chosen as the research subject was workers who were exposed to heat. Purposively 57 construction workers were selected as subjects. To prove the relationship between acclimatization, water intake adequacy rate, and individual characteristics with heat strain, it used chi square statistical test. Physiological Strain Index (PSI) used to assess heat strain event on workers. The results of outdoor WBGT measurements at the study site showed that the average of WBGT outdoor was 31.11 oC. Heat strain with high index experienced by the majority of workers as much as 82.5%. Result of statistical analysis showed the significance of each variable was acclimatization (p<0.05), water intake adequacy rate (p<0.05), alcohol and drug consumption (p>0.05), health status (p>0.05), body mass index (p<0.05), age (p>0.05), and work period (p>0.05). This study showed that there was a significant relationship between heat strain with acclimatization, water intake adequacy rate and body mass index. The relationship is evidenced by the results of bivariate analysis. However, there was no association between consumption of alcohol or drugs, health status, work period, and age with heat strain.
Mapping of Work Hazards Environment and Illness Risk of Employment on Brass Craftsman Based on Geographic Information System (GIS)
Authors: Sannita Debora Ambarita , Yuliani Setyaningsih , Daru Lestantyo , Yudhy Dharmawan
Published: December 2018

The brass craftsmen are exposed to the dangers of the working environment of work, and the hazard of occupational illness risks can also be experienced by workers. The purpose of this study is to analyze and map the hazards of work environment and risk of occupational diseases using Geographic Information System (GIS). This research is qualitative research. The sample was taken purposively by 10 brass craftsman in Juwana sub-district. Data on occupational illness risk complaints were taken using an in-depth interview questionnaire. Workplace hazard identification was analyzed using HTRA Form and hazardous workplace mapping using GIS software free (PC Arc 10.3). The research results showed that the hazard of working environment on brass craftsmen more is the physics hazard derived from the machine used. In addition, there is also a chemical hazard during the working process both steam and metal dust. The risk of occupational illness most of which the respondents complained of was shortness of breath and cough. In addition, arm pain and low back pain is also experienced by the workers. This research showed that the hazards of work environment on brass craftsmen include physical hazards, chemical hazards, ergonomic hazards and psychological hazards. While the complaints of occupational illness risk in the form of respiratory problems, arm pain, low back pain and skin irritation.
Analysis of optimal harvesting of a prey-predator fishery model with the limited sources of prey and presence of toxicity
Authors: Sutimin  , Siti Khabibah , Dita Anies Munawwaroh
Published: December 2018

A model of prey and predator species is discussed to study the effects of the limited prey density and presence of toxicity. The model is studied for sustainable optimal harvesting. The existence of equilibrium points is analyzed to find the stability of coexistence equilibrium, and use Pontryagin’s maximal method to obtain the sustainable optimal harvesting. The results show that the optimal harvesting is obtained from the solution of optimal equilibrium. The toxicity factor decreases the sustainable harvesting.
Habitat characteristics with an. barbirostris larva density in Bulukumba
Authors: Iwan Suryadi
Published: December 2018

Bulukumba is a malaria endemic area in South Sulawesi with malaria cases reported annually, An.barbirostris as a potential vector of malaria in the area. This study aims to analyze habitat characteristics with a density of An. barbirostris larvae The method used is an observational study with ecological survey design through the cross-sectional approach of samples in the form of Anopheles larvae habitat. Bivariate analysis shows physical, chemical, and biological environmental factors. water temperature significant to the density of larva An.barbirostris with p-value = 0,002. Multivariate test using linear regression to know the most influential variables, it is known that the variables that have the most influence on the density of larvae An. barbirostris in endemic area Bulukumba is water temperature p = 0,002. Environmental factors such as salinity, aquatic plant, plants around, predators and crops along with water temperature are factors that support the density of An. barbirostris larvae Control can be done with environmental management, especially interventions on Anopheles sp larvae breeding habitat, by sowing predator fish seeds, habitat modification and manipulation. modification of anopheles habitat by covering habitats and carrying out development can reduce larval nutrition so as to reduce carbon in the soil which results in a decrease in larval density.
Lean Manufacturing: Waste Reduction Using Value Stream Mapping
Authors: Zahrotun Nihlah , Taufiq Immawan
Published: December 2018

Cristal Sri Sujarwati is a small medium enterprise (SME) that produce keripik salak in Sleman, Yogyakarta. To survive and win industrial competition, Cristal Sri Sujarwati was required to improve its performance. But in reality there was a lot of waste in order fulfillment processes marked by ineffective and inefficient work. In this research, lean manufacturing aims to identify and eliminate waste so that the company could improve its performance in winning the industry competition. Lean manufacturing is a systematic approach used to identify and eliminate waste. This lean concept could improve responsiveness through waste reduction, continuous improvement and cost reduction. In order to identify and eliminating waste, a value stream mapping tools, waste weighting questionnaire, value stream analysis tools, and fishbone diagram are used. From the results of research, the dominant waste in the production process was waste defects, waiting, and unnecessary inventory. To eliminate waste, process activity mapping (PAM), the one of detailed mapping tools in VALSAT are used. From the results of the improvement recommendations analysis, lead time decreased by 80 minutes. From the analysis using PAM, there was a reduction of NVA activity from 3.10% to 1.01%.
Evironmental Management at the Household, the case of Bekasi City
Authors: Arni Sarah Ayu , Hayati Sari Hasibuan , Donna Asteria
Published: December 2018

The households have significant roles in managing the environment. The increasing of household numbers will automatically increase the demand and consumption of the resources, namely electricity, water, and land-use (space). The household also is a significant contributor to the solid waste in the city. The changing of lifestyle, consumption patterns and awareness of environment directly affects the environmental management at the household level. This paper examined the environmental management at the household level, in three aspects: (1) consumption of electricity and water, (2) green open space, and (3) waste management. This research using the quantitative method with data obtained from the survey on 30 respondents, all of the respondents are the household mother, with the assumption of they who manage the resources consumption and the environment in the household. This research found that the level of knowledge, attitude, and behavior in the waste management, water and electricity consumption and green open space management are good.
Characterization of Leachate from the Integrated Solid Waste Treatment Plant at Diponegoro University, Indonesia
Authors: Mochamad Arief Budihardjo , Mochtar Hadiwidodo , Haryono Setiyo Huboyo , Felita Rahma Aulia
Published: December 2018

Leachate is generated during the decomposition process of solid waste and as a result of rainwater percolation through piles of garbage. Leachate composition is influenced by several factors such as the characteristic and density of solid waste, the amount of rainfall and the specific conditions of the disposal site. Once leachate reaches the surrounding soil and groundwater, high concentrations of organic substances will form and remain in the soil and groundwater for a long time. The well-known Indonesian Diponegoro University has built an integrated solid waste treatment plant (ISWTP) to manage the waste generated on site, which is mostly dominated by leaf litter, food waste, paper, and plastic. Organic solid waste goes through a decomposition process and produces leachate. In order to treat the leachate, it is necessary to identify its parameters. Thus, this study examines the effect of solid waste composition and density on leachate quality based on the conditions of the ISWTP. The results showed that the composition of solid waste altered the leachate quality while the density affected the decomposition rate and quantity of leachate.
Performance of Semi-Aerobic Solid Waste Bioreactor in relation to Decomposition Process and Biogas Production
Authors: Wiharyanto Oktiawan , Endro Sutrisno , Mochtar Hadiwidodo
Published: December 2018

Solid waste which is sent to Jatibarang landfill in Semarang City can reach up to 4000 m3/day. The composition of solid waste consists of 61.95% of organic waste and 38.05% of inorganic waste. The environmental impacts of solid waste can be reduced using bioreactor methods which being able to accelerate the solid waste decomposition. Large amount of solid waste which is sent to Jatibarang landfill certainly has great potential to environment pollution. Therefore, a technology such as landfill bioreactor is needed to speed up the decomposition process of organic solid waste. Landfill bioreactors are characterized using a range of technologies in order to create an suitable environment for degradation processes. In this study four bioreactors simulated landfills that consist of hybrid bioreactors and anaerobic control bioreactors. The result shows that hybrid bioreactor has increases the decomposition process of organic solid waste. The hybrid bioreactor also produce more methane in subsequent anaerobes.
Alternative Selection in Reducing Wood Scrap with Green Productivity Approach
Authors: Dini Wahyuni , Irwan Budiman , Mangara Tambunan
Published: December 2018

This research was conducted in companies engaged in the production of furniture in North Sumatra. From observations made, seen piles of scrap pieces of wood from the rest of the production. This study was conducted to select the best alternative to reduce scrap wood with green productivity approach so that productions are going to more economical and productive. Green productivity approach to the reduction of scrap is performed by calculating Green Productivity Index. There are 3 alternative wood scrap reduction, which is: (1) Do not perform any conversion actions; (2) Wood scrap smoothed and pressed into the pressed wood as the “content” of the door, wood scrap that is usually used as a fuel in the boiler is replaced with oil palm pulp; and (3) Purchase the woods with appropriate size and produces scrap as minimum as possible. Alternative 2 was selected as the best alternative to the Green Productivity Index (GPI) Human amounted to 1, GPI Material 1.13, GPICapital1.06, GPI Energy at 1.16, and GPI Waste of 0.
Can online transportation support low carbon?
Authors: Anita Ratnasari Rakhmatulloh , Talitha Zuleika Islamey , Diah Intan Kusumo Dewi
Published: December 2018

The existence of online transportation is one of the alternative priority modes in transportation. Online transportation has the concept of car sharing, mainly by the uses of vehicles together. The function of car-sharing is expected to reduce the number of vehicles use. Through the concept of car sharing, it can help to realize the concept of a low-carbon city. In previous studies, people prefer to choose private cars than public transportation, because of their easiness in mobility and short travel time. Online Transportation is also efficient same as private vehicles, regarding mobility and travel time. Thus, Online Transportation is expected to reduce the usage of private vehicles and create more environmentally friendly. Based on this phenomenon, researchers want to explore the purpose of the preference for online transportation. The result finds out that the variables could influence the choices of online transportation. This research was conducted using the utility of transportation mode selection model.
Usability measurement of telecommunications testing website PT. Telkom Indonesia using user centered design
Authors: Ratna Purwaningsih , Heru Prastawa , Anggita Haedy Puspitasari
Published: December 2018

The telecommunication testing website developed and manage by PT Telekomunikasi Indonesia which aims to enable admin and customer to do the online test for their product. Online test save time and cost of testing. Some website functions found out did not operate effectively and efficiently. Usability Testing using User Centered Design (UCD) method is a research instruments in the form of draft interview, task scenario, and questionnaire. Variables used are Completion rate and Error to assess Website effectiveness, Task Time variable to assess website efficiency, and Satisfaction score variables by subjective questionnaire. Result of WEBUSE questionnaire, usability of website is 0.5825 categorized as moderate usability level (0.4 <x <= 0.6). The lowest usability is the User Interface Design category (0.55). The result conclude that the website need to be evaluate and improved. The time completion rate is 850 seconds and the error rate is high for task certificate download and complete the QA document. The highest task time is complete the registration form.
Analysis of company operating feasibility using Energy Productivity Ratio (EPR)
Authors: Sembiring Nurhayati , Sari Br Purba Novita
Published: December 2018

This research is conducted in a company engaged in the manufacture of pesticides. The company has never measured it's energy productivity. The company is only based on production targets and financial benefits achieved each year. One method that can be used in productivity measurement and operational feasibility is Energy Productivity Ratio (EPR). EPR is expressed as the ratio of energy output to the energy input. The feasibility of the company's operation can be seen from the energy productivity value. The purpose of research conducted to 1) Measure the level of energy productivity 2) Measuring the feasibility of the company's operations 3) Identify the factors that influence the value of energy productivity ratio (EPR) and 4) Provide proposed steps to increase energy productivity. EPR is made by collecting data on material requirements, power requirements, machine and equipment data and the number of products produced. After doing the calculation of energy input and energy output, the final step is to calculate the value of Energy Productivity Ratio (EPR). By this research we know the company is feasible to operate because the value of EPR> 1, although it must be repaired to increase the value.
Analysis Of Carbon Emission Level on Merauke Regency Land Cover
Authors: Untarf Yus , Witdarko  , Jefri Sembiring
Published: December 2018

This research is aimed to know level of carbon emission from land cover change in Merauke Regency. The data are historical baseline which is land cover map time series of 1990, 2000, 2005, 2010 and 2014, also zoning plan of Merauke Regency in 2010-2030. Furthermore, the data are processed with software LUMENS (land use planning for low emission development strategy). The result is presented descriptively. From the result, it can be concluded that based on analysis of carbon emission level in 1990 - 2000, it is found 1948773.523 Ton CO2/year with emission level per unit area in amount of 0.421 Ton CO2eq/ha.year; observation in 2000 - 2005 found emission level in amount of 6151442.314 Ton CO2/year with emission per unit area 1.336 Ton CO2eq/ha.year; observation in 2005 - 2010 found emission level per year in amount of 41386219.77 Ton CO2/year and emission level per unit area in amount of 9.4 Ton CO2eq/ha.year; meanwhile, Merauke Regency's emission level in 2010 - 2014 is 61816894.268 Ton CO2/year with emission level per unit area in amount of 13.928 Ton CO2eq/ha.year.
The Indonesian Slum Tourism: Selling the Other Side of Jakarta to the World Using Destination Marketing Activity in the Case of “Jakarta Hidden Tour”
Authors: Agus Pramadi , Indra Kusumawardhana
Published: December 2018

This research is constructed based on the reality of slum tourism as a new phenomenon in the era of globalization. The locus is selected as it is related to Jakarta Hidden Tour case in Indonesia. The question posed is how to promote slum tourism in the Jakarta Hidden Tour to the international world and raison d'etre. To answer the problem formulation, the researcher uses eclectic analytical framework which are commodification theory by Karl Spracklen and destination marketing theory by Youcheng Wang and Abraham Pizam. By using qualitative method, departing from above-mentioned understanding, this paper claims that slum tourism in the case of Jakarta Hidden Tour as a form of valorization offered to the world. Whereby, the core argument is slum tourism phenomenon that arise in Indonesia is one of the dark side of Indonesia's economic development that generates inequality especially in big cities.
Characteristics of Traffic Flows at Kuda Mati non-traffic light Intersection in Workhour and Holidays
Authors: Herbin F. Betaubun
Published: December 2018

Characteristics of traffic flow needs to be revealed to describe the traffic flow that occurred at the research location. One of the patterns of traffic flow movement of Merauke Regency that is important enough to be observed is the movement pattern that occurs at Kuda Mati Non-traffic lights Intersection. This intersection is one of the access for economic support of Merauke Regency. The intersection connects the city center to the production centers and is used by the community to perform activities in meeting their needs such as working and meeting the needs of clothing, food and shelter. This fulfillment activity is usually differentiated according to work time and holiday time. The method used is survey method to describe the characteristics of traffic flow at the intersection. Data analysis applied MKJI 1997. The results show that peak hour traffic flow occurs at 17.00 - 18.00 on holiday 803 smp / hour, while for working time the traffic flow is evenly distributed with maximum vehicle volume occur at 12:00 to 13:00 which amounted to 471 smp / hour.
Inequality in Public Decision Making Process: Case Studies of Cement Factories in Central Java, Indonesia
Authors: Sudharto P. Hadi , Hartuti Purnaweni , Kismartini Kismartini
Published: December 2018

North Kendeng mountain in Central Java is rich in limestone potentially utilized for cement and other uses. It is also a storage of ground water currently being utilized for potable water and rice field's irrigation. Conflict on North Kendeng Mountain revolves around the utilization of limestone for mining or for conservation. This paper reviews the process of decision making through EIA studies done and spatial planning. The type of research is descriptive analysis. The data gathered through document and content analysis, physical and social observation and informal interview with relevant interests. The data obtained was analyzed quantitatively and qualitatively. In the District of Sukolilo, Pati Regency, EIA as basis for issuing environmental permit for cement factory was considered did not address the critical issue regarding the number of spring water potentially affected by Cement Factory activities. While the decision on determining KBAK (natural landscape of karst) Sukolilo need to be conserved created controversy. It is the fact that the KBAK area become narrowed than the previous stipulation. In addition, the area determined as non-KBAK at Tambakromo-Kayen, utilized for mining, has similar characteristics of the area determined as KBAK. To ensure the sustainability of utilization and management of North Kendeng Mountain, it is required a transparence, participative and objective decision making process.
Indonesia Politics in Eradicating Inequalities in The Border Area
Authors: Widya Setiabudi Sumadinata , Rizki Ananda Ramadhan
Published: December 2018

Inequalities is inherent characteristic in dealing with border development. As a large archipelagic country, Indonesia still has so many homeworks in managing border areas. For years border areas have been marginalized from national development process. The inequalities could be seen in several aspects, such as a low level of public services availability; low quality and access of education; bad economic condition and high level of poverty. The scope of this paper is to explore some changes in Indonesian border management and development under Joko Widodo's administration, especially the efforts to eradicate inequalities. The method used in the research is qualitative approach through literature review and interviews. The result of this paper shows that Indonesian government under Joko Widodo's presidency has done some important policies to bring the social justice in border areas. However, they still have to encounter very substantial challenges and obstacles such as the problems of institutional and human resource capacity. Joko Widodo shows a very strong commitment to build border areas as good as other areas in Indonesia.
Collaborative Governance as a Management Innovation in Local Decentralization
Authors: Titik Djumiarti
Published: December 2018

The objective of this research was to manage innovations in local government. Collaborative governance based on innovation governance in local decentralization. Case study used research was about Environmental Management on community based settlement in Kendal Regency. This research explores with qualitative approach to explain the governance collaboration within domain analysis method. The domain is seventh of collaborative governance dimension, such as: 1) power dimension, 2) commitment dimension, 3) cultural internalization, 4) strategy dimension, 5) goal dimension, 6) visibility and awareness dimension, 7) problem solving dimension. Due to seventh dimensions is linked to ten principles of Good Governance, such as we also identity a series of factors that are critical within the collaborative process itself. This factors include face to face dialogue, trust building and the development of commitment and share undertanding. The result of this research are Researchers see that PLPBK program in Kendal is able to be the best practice of decentralization that will be beneficial and has a high quality for the local government and the society that lives in it. This Article concludes with discutions of the implications of our contingency model for practitioners and for future resarch on colaborative Governance.
The Analysis of Performance Management System in a Local Basically on Armstrong's Approach and Baron Models
Authors: Lilis Sri Sulistiani
Published: December 2018

This study aims to analyze the performance management system implemented on local government, using performance management model by Armstrong and Baron. In this study the model used as the basis to identify the aspects of performance management have been applied or are not yet available. Research is done in the Banyumas District Government uses qualitative research methods, methods of data collection through interviews in depth and interactive methods of analysis. The focus of research is performance management system with the following aspects: Organization Mission and objectives of the strategic and business plan, objectives of the Department, the deal's performance and development, performance and development plans, development work and action monitoring as well as feedback, formal review and feedback, and the comprehensive performance assessment. The results showed that the planning performance already compiled in the integrated work planning proposal which is a result of the networking of the various sub organizational units. The planning of this work was used as the basis for drawing up an agreement of work organization and employees. Implementing performance assessment already exists at any level in accordance with the agreement of performance, namely the assessment of program realization, the performance of the Organization and employees. Monitoring and feedback is organized according to the type of assessment i.e. work programs, organizations and individuals. The results of the performance assessment product has not been made into the basis for the granting of rewards that can motivate employees and the aspect of employee development plan has not been carried out properly.