bluuebunny/crossref_metadata_2025 huggingface dataset:
ANALYSIS OF THE VOLUME COMPARATION OF 3’S (TS, GNSS and TLS)
Authors: Khomsin  , Pratomo Danar Guruh , Anjasmara Ira Mutiara , Ahmad Faizzuddin
Published: May 2019

Recently, technological developments in the field of surveys and mapping are growing very rapidly such as total station, navigation satellite (Global Navigation Satellite System), drones and laser scanners. One application of this technology is to measure a stockpile area quickly and accurately. This research will measure two stockpiles (coal warehouses) using total station (TS), GNSS and terrestrial laser scanner (TLS). This research will compare the results of volume calculations with the data generated by 3’S (TS, GNSS and TLS). Research is conducted at Coal Yard PT. Barkalin Surabaya in Benowo District, Surabaya, East City with geographically located at 112°39'11'’ E and 7°07’13‘' S. The first step is to make 3D model of Laser Scanner data by TLS Faro 3D 120 and to do regristrastion and filltering using Faro Scene. After that the data export to be 3D model from Faro Scene format to Recap 2016 (.rcp) to present and get coordinates. The next step is to compare the coordinates from TLS, TS and GNSS RTK. Finally, the accuracy of volume calculation from TS and GNSS RTK can be compared to TLS. The volume differences between TS and TLS data are -7.31 m3 (-0.45%) for the 1st location and -6.89 m3 (-0.24%) for the 2nd location. While the volume differences between GNSS RTK and TLS are -10.34 m3 (-0.63%) and -9.05 m3 (-0.31%) for the 1st location and the 2nd location respectively. Generally, the volume differences between TLS, TS and GNSS RTK are not significant. Therefore, 3’S can be used to measure a volume of stockpile.
The Effect of Highway Vibration to The Hills Slope Stability by an Integrated GPS-Vibration Data Processing
Authors: Tisnasendjaja Achmad Ruchlihadiana , Abidin Hasanuddin Z. , Sarsito Dina A. , Sadisun Imam A. , Gumilar Irwan
Published: May 2019

Bandung-Jakarta, Indonesia highway have high density vehicles pass even often jammed. High activity of vehicles cause repeated vibrations and occur continuously. In case, the highway that divides the hills. The passing vehicles give rise repeatedly vibration and indicated disturbance of hillside slope stability. Vehicles vibration depend on speed, weight, number of vehicles and road construction materials. A method in question is counting a vehicle volume and determine the volume pattern of the vehicle. The magnitude of vibration is function of the object distance from the sources. The magnitude of the vibration effect is very dependent on the geological structure of hills formation. Hilly slope stability indicates experiencing interference if the object or material slope changes position or displacement. GPS observation give position changes and its displacement. The effect of Toll road vibration to slope stability is known by GPS and Vibration simultaneous measurement. Data acquisition used six unit GPS receivers and six unit vibration sensor which is installed on the hillside beside the highway. Integrated data processing techniques using Empirical Mode Decomposition (EMD). Integrated GPS-Vibration data are implemented to find actual displacement which are caused by highway vibration.
Study on Search and Rescue System for Military and Civil use by using COSPAS SARSAT and Terrestrial Communication Network
Authors: Lee Sanguk , Jeong Incheol , Ahn Woo-Geun
Published: May 2019

We propose search and rescue system for the both military and civil uses with minimizing burden to COSPAS SARSAT by using terrestrial communication network like LTE as an example in the paper. The terrestrial network may not be limited to LTE but extended to 5G, SigFox, LoRa, etc, later on. For security, special encryption mechanism is applied to the both COSPAS SARSAT and Terrestrial links. Also, operation concept for critical and normal situation. Implementation result and enhancing positioning accuracy by using rescue signal itself from ground signal processing is presented too.
A Simulation Study on Triple Frequency Ambiguity Resolution for Reference Stations Using Different Strategy Regarding Elevation angles
Authors: Yu Sun-Kyoung , Kim Dong-uk , Song June-sol , Kee Changdon
Published: May 2019

This paper proposes an ambiguity resolution method using triple frequency for reference stations. Using the reference coordinate information, geometry based ambiguity resolution performance is analysed. Although orbit errors and tropospheric model errors still remain, wide lane ambiguity could be fixed in several epochs. However, the narrow lane wave length of about 10cm is too short to overcome error sources by simply combining the measurement. Therefore, we have divided the elevation angle into 5 degree intervals and investigated the measurement errors and the time to fix of each section. For high elevation satellites, it is possible to determine in several epochs by integer rounding. On the other hand, if the elevation is lower than 30 degrees, the tropospheric zenith delay must be estimated with ambiguities. The proposed algorithm estimates ambiguities and tropospheric zenith delay simultaneously utilizing ambiguity free observations of high elevation satellites. Ambiguities for high elevation satellites are resolved by integer rounding in several epochs. The algorithm has been verified by generating the simulated observation data for the ‘Cheon-an’ and ‘Boen’ reference stations in the Korea.
Performance analysis of GPS / Radar integrated navigation system
Authors: Jo Gwang Hee , Lee Jin Hyuk , Noh Jae Hee , Lee Ju Hyun , Ahn Jae Min , Lee Sang Jeong
Published: May 2019

GPS is used in various navigation fields. However, visibility is lowered in such an environment as urban canyon, and navigation performance deteriorates due to the visibility, multipath effect. So, in order to improve navigation performance in this environment, methods of integration with other sensors have been studied. In this paper, we use radar to measure the range of the landmark with known position. An integration algorithm is designed using GPS pseudorange and radar measurement.
Performance of TPC based ranging signal for more than 2 services multiplexing
Authors: Kim Seung Tae , Kim Kap-Jin , Song Ki-Won , Ahn Jae Min
Published: May 2019

This paper presents signal structure and power efficiency performance for simultaneous transmission of Global Navigation Satellite System (GNSS) service signals based on Tiered Polyphase Code (TPC). For the simultaneous transmission of three or more service signals, the intermodulation terms addition and modification of the power allocations for the signal multiplexing are applied first to the spreading signal with the binary pseudorandom noise (PRN) code and a constant envelope signal is generated. Then, Zadoff-Chu sequence is applied as a secondary code to generate a multiplexed satellite navigation signal having a constant envelope characteristic. Simulation results show that power efficiency performance of more than 80% can be achieved in three service signal multiplexing.
Integration of GNSS-IMU for increasing the observation accuracy in Condensed Areas (Infrastructure and Forest Canopies)
Authors: Cahyadi Mokhamad Nur , Rwabudandi Irene
Published: May 2019

Position determination using satellite navigation system has grown significantly. It provides geospatial with global coverage called GNSS (Global Navigation System Satellite). GNSS satellites consists of GLONASS, GPS (Global positioning system) and Galileo.GPS is the most commonly used system and it is known to its capability to determine 3D position on the surface of the earth. In order to determine the position, a GPS receiver must be able to receive signals from at least four GPS satellites. However, the determination of position in condensed areas such as tunnels, area surrounded by high rise buildings, highly forested and in other closely-knit areas is not achieved because satellite signals cannot reach the receiver in the above-mentioned areas and also others where the signals are reflected before being received by a GPS receiver. In this paper, we present the algorithm to fuse GPS and the inertial measurement unit (IMU) to enable positioning in the above-mentioned Condensed Areas. The standard deviations of the two measurements show that GPS-IMU is better than GPS alone, the standard deviation when satellite outages occurred is - 4.57475 for GPS-IMU measurements and 0.218675 for GPS observations. We presented the results in graphics and it shows that GPS measurements are easily disturbed by external influence such as multipath but GPS-IMU graphic is continuous and robust. The advantages and disadvantages of GPS and INS are complementary and make them work together to enable the accurate measurements in the areas mentioned above. Integration of INS and GNSS can be classified into three types, loosely coupled Kalman filter, tightly coupled Kalman filters and ultratight coupled Kalman filter. In this research we used loosely coupled Kalman filter and tightly coupled Kalman filters to combine GPS and INS in one system.
Latest GNSS signal in space developments – GPS, QZSS & the new Beidou 3 under examination
Authors: Thoelert Steffen
Published: May 2019

Nowadays one can use four global navigation satellite systems (GNSS). Two of them are complete constellations (GPS, Glonass) and two (Beidou, Galileo) are already usable and will be finish in the near future. Additionally satellite based augmentation systems (SBAS) like WAAS, EGNOS, GAGAN or QZSS complement the GNSS service. However, within all systems one can observe changes, modifications, and updates every year. This can be related to satellite renewables leading to signal property changes. Especially, for safety critical applications using GNSS, like advanced receiver autonomous integrity monitoring (ARAIM) or ground-based augmentation systems (GBAS) the new or changed signal properties are of high interest. With the help of detailed information about the signal deformation and the received signal power it is possible to calculate realistic error bounds and consequently realistic protection level for these kinds of safety critical applications. This paper presents an overview of the findings according new signals or signal configurations of GPS, Beidou and QZSS of the last two years. After a brief introduction of the measurement facility the paper will introduce basic analysis about the quality of the signal shape in spectral and modulation domain. Using our precise calibrated measurement facility, we will also present an analysis of the transmitted satellite signal power including estimates about the power sharing among individual signal components within each band. Considering the measured power in relation to the boresight angle of the satellite one can derive a cut through the antenna pattern of the satellite and can assess the antenna symmetry properties. Examples for different satellites will be presented. Finally, we will end with a conclusion regarding the considered signal developments and its impact on GNSS users.
Improving Detection Performance of Ionospheric Disturbances due to Earthquake by Optimization of Sequential Measurement Combination
Authors: Kang Seonho , Han Deokhwa , Song Junesol , Kim Bugyeom , So Hyoungmin , Kim Gapjin , Kee Changdon
Published: May 2019

Energy generated from earthquake (EQ) is transferred to the ionosphere and results in co-seismic ionospheric disturbances (CID). CID can be observed in the ionospheric combination using L1, L2 frequency carrier phase. As ionospheric trend due to normal conditions such as elevation angle of satellites is generally larger than disturbances, a proper measure is required to extract disturbance signals. Derivative, or sequential combination, is a simple and effective way to remove the normal trend in the ionospheric delay. When using derivative, however, disturbance signals can often be obscured by noise due to its small amplitude. In order to reduce the noise while preserving the time rate of data, and thus to improve signal-to-noise ratio (SNR), we designed a new derivative method using optimization under a couple of assumptions. With simulation data, it is found that N, the number of epochs used for sequential combination, turned out to be the best when N=160 with maximum SNR. Finally, the proposed algorithm’s SNR was compared to that of the previous study which also used derivative method. 120~260% improvements were observed for the proposed method compared to the conventional method.
Walanae Fault Kinematic Deduced from Geometric Geodetic GNSS GPS Monitoring
Authors: Sarsito Dina Anggreni , Susilo Susilo , Rudyawan Alfend , Muhammad Norman Arif , Andreas Heri , Pradipta Dhota
Published: May 2019

The western Sulawesi region has the main structural boundary, the Palu Koro Fault which divides from Palu Bay at the northest part to Central Sulawesi and continues into the Bone Gulf in southest part. In the southern part of this region, namely the South Sulawesi Arm zone, there is a Walanae fault which is defined as a sinistral wrench with a NW-SE direction that divides the South Arm of Sulawesi. This fault in the northern part is expected to continue to the northwest intersecting the Makassar Strait and unite with Paternoster-Lupar (Kalimantan) sutures and at the southest ending in Flores thrust fault. Walanae fault system did not only have one strand but was divided into 4 parts, namely the northern East Walanae Fault with a slip rate of 6.634 mm/year and the southern part with a 7.097 mm/year of slip rate, as well as the northern part of West Walanae Fault with a slip rate of 4.528 mm/year and the southern part with a slip rate of 3.270 mm/year. The northern part of Walanae fault system has opening or spreading pattern occurs that is in harmony with the formation of Walanae depression. By using simple geometric modeling, we found the fault system have 2 strain partitions with dominant sinistral strike slip pattern at southern part and combination between left lateral strike slip with thrust fault pattern at northern part.
Climate Comfort Analysis for Tourism in Samosir District
Authors: Haryadi Adhityo , Kusratmoko Eko , Karsidi Asep
Published: May 2019

Tourism has become one of the sectors which are the mainstay source of foreign exchange in Indonesia. One of the region which has tourism potential is Samosir District at North Sumatra Province. Climatic conditions affect the tourist comfortability while doing the tourism activity. Studies on climate comfort in Toba Lake Region, especially in Samosir District have not been done. Way to determine the level of comfort associated with tourism activities are known to the Tourism Climate Index (TCI). This research aims to determine the level of climate comfort tourist destinations in Samosir District based on the value of TCI and knowing the relation between TCI value with the number of visits a tourist destination.
Apply GNSS-Reflectometry Technique for wind retrieval in typhoon condition
Authors: Chien Hwa , Lu Quang-Huy , Yeh Wen-Hao
Published: May 2019

Global Navigation Satellite System-Reflectometry (GNSS-R) is an innovative Earth observation technique that exploits signal from satellite constellations after reflection on the Eart h surface. The GNSS-R techniques is also known to have the potential of mapping the surface wind speed up to 70 m/s, and thus provide a promising solution. Abundant real-time data of the typhoon surface wind speed will play the crucial role on the improvement of typhoon intensification forecasting. The aim of present study is to investigate the influences of high wind speed and the corresponding giant waves during typhoon to the GNSS-R wind speed retrieval algorithms. The Mean Square Slope that altered by the complex wave directionality is discussed. Finally, the uncertainties of wind speed retrieval with respect to the influences of wave directionality is assessed. The level 1 product from the GNSS-R receiver is a map of GPS signal power scattered from the sea surface, as a 2D function of delay and Doppler frequency, which is known as a Delay-Doppler Map, or DDM. Based on Zavorotny-Voronovich model, the DDMs are simulated from the Directional Mean Square Slope (DMSS) that obtained from the combination of capillary wave spectra and gravity wave spectra. The gravity wave spectra were calculated using a 3rd generation numerical wave model that driven by the Dujuan typhoon (2015) wind fields with super-fine resolution. The complexity of directional wave spectrum, such as extreme spatial heterogeneity, bimodal spectra and varying directional spreading alter the DMSS and DDM. Various observables, e.g. DDM Average (DDMA), and Leading Edge Slope (LES) are then applied to the simulated DDM. Regression-based wind retrievals are developed for each individual observable using empirical geophysical model functions. The wind speed retrieval in case of Dujuan typhoon are compared with the target data uncertainty assessment.
Site Coefficient of Short Fa and Long period Fv Maps Constructed from the Probabilistic Seismic Hazard Analysis in Yogyakarta Special Province
Authors: Pawirodikromo Widodo , Makrup Lalu , Teguh Mochammad , Suryo Bambang , Hartantyo Eddy
Published: May 2019

Among the devastated earthquakes that have occurred in theYogyakarta Special Province (YSP) were earthquakes that occur in 1867,1943 and 2006 [1,2]. Macro site coefficient is already available in [3]however, more detailed site coefficient or presented on a micro scale is notyet available. The disaster mitigation program is needed and one of whichis the availability of the microseismic site coefficient maps for short periodFa and long period Fv particularly for building design. The probabilisticseismic hazard analysis (PSHA) has been carried out. The subduction andthe shallow crustal earthquakes within 500km radius from the city ofYogyakarta have been used. In contrast to [4], PSHA was carried out byusing 10% probability of the earthquake being exceeded within 50 years. Result of this study indicates that YSP is dominated by hard SD andmedium soil categories. The medium soil is mainly located at along theOpak and Progo river valleys and along the southern coast of Bantul andKulonprogo districts. The short period site coefficient Fa is stronglyinfluenced by the Opak fault as an earthquake source, while the sitecoefficient for long period Fv is more influenced by the Megathrustearthquake source. For PGA < 1.0g, the seismic coefficient Fa for shortperiod increases with increasing Vs30, meanwhile for long period ofseismic coefficient Fv decreases with increasing Vs30.
The Effects of Earthquake Significant Duration D595 to the Earthquake Intensity Measures and the Inelastic Response of SDOF Reinforced Concrete Structure
Authors: Pawirodikromo Widodo
Published: May 2019

The concept of seismic intensity measures has long beendiscussed and has been collected by researchers among whom are by [1-6]. However, the effect of earthquake duration on the structural response hasnot received attention from the researcher so it has not been seen in the listof the existing seismic intensity measures. In the spectral response, forexample, it has been accommodated peak value and earthquake frequencycontent but has not accommodated the duration of the earthquake. Theeffect of earthquake duration on a response, damage or collapse capacity ofthe structure has been done by the researchers [7-10]. The spectrallyequivalent approach/control has been used by [9,10]., while the collapsecapacity approach is cursed by [8]. The use of the classification of theearthquake frequency content as independent variables has been suggestedby [7]. In this study, the classification of earthquake frequency (lowfrequency), earthquake duration as the independent variable and peakacceleration control have been used. Single degree of Freedom (SDOF)structures excited by 15-earthquakes with effective durations varyingbetween te = 6.34 to 30.18 s have been used. The results showed that notall seismic intensity measure used had a strong relationship with effectiveduration. The earthquake effective duration has a positive relationship withthe damage index but the relationship is relatively weak
An Implementation of the HAZUS Method for Estimating Potential Damage of Residential Houses at Pacitan Sub-district, East Java, Indonesia due to Earthquake
Authors: Pratiwi Dheka Shara , Teguh Mochamad , Pawirodikromo Widodo
Published: May 2019

Indonesia is not only known as an archipelago that is rich innatural resources but also known as a disaster-prone country. Because ofits location in four major Eurasian, Indo-Australian, Pacific, and Philippinetectonic plates, natural disasters such as earthquakes, floods, landslides, volcanic eruptions, droughts, forest fires, and tsunamis often occurthroughout the region. In 2006, a large earthquake shocked the denselypopulated Yogyakarta Province and its surrounding areas. This earthquakecaused huge fatalities and damaged thousands of buildings andinfrastructures. The Pacitan region is geographically close to Yogyakarta, and is located only 120 km from the epicenter of the quake. Therefore, awareness of disaster mitigation is a critical action in reducing disasterrisks. In addition, the Pacitan Regency is a hilly and mountainous regioncovering a total area of 1,389.87 km. Its territory also includes karstregions and lowland areas. A preliminary research utilizing the HAZUSmethod was conducted for assessing the damage probability of residentialhouses at an earthquake-prone area of Pacitan sub-district. The indicativeresults show that the unreinforced masonry (URML) types are the mostdestructive followed by Wood, light frame (W1), reinforced masonry lowrise(RM2L), and reinforced masonry mid-rise (RM2M) when appliedacross three scenarios of earthquake with magnitudes of 6, 6.5, and 7, respectively.
The Effectiveness of River Bank Normalization on Flood Risk Reduction
Authors: Tunas I Gede , Herman Rudi
Published: May 2019

One popular technique used to reduce flood risk associated witha flood mitigation scheme, is normalization of a river bank. This methodcan be effected done by adjusting the width of the river on the left andright banks, in order to increase channel capacity. The biggest obstaclemost often encountered in adjusting the river banks is insufficient landarea, both on the left and right sides. The capacity of the river channel cantherefore not be optimised, due to this limitation. This study intends toevaluate the effectiveness of river bank normalization to reduce flood riskin the Puna River, Central Sulawesi Province of Indonesia. The capacityevaluation was conducted under two conditions i.e. before and afternormalization of the river bank, using HEC-RAS Hydrodynamic Program, integrated with GIS. The level of effectiveness is measured by acomparison between the capacity of the river channel after banknormalization with the required channel capacity on 100 years returnperiod of discharge for important and high-risk river categories. Simulationresults in both conditions show that the normalization of river banks canincrease channel capacity from 270 m3/s to 470.2 m3/s, where the requiredchannel capacity is 590.71 m3/s. The effectiveness of the banknormalization is 100 %, included in the category of very effective
The Proposals of Landslide Spatial-Mitigation Strategy in Indonesia; A literature study from the events of 2010-2015
Authors: Sastra Doni , Cholis Idham Noor
Published: May 2019

Increasing phenomena of climate change following by thedeformation of the geological surface area of Indonesia cause variousdisasters such as landslides and floods. During the period of 2008 to 2016, there have been 307 total occurrences destructed many locations in thecountry with many mitigations have been done according to the type andlocation of the disaster with some different degree of success. This study isaimed to describe how landslide mitigation related to spatial configurationhad been organized in the proposals. A literature study has been done todescribe and compare each of the techniques utilized in the cases. Theresult explains the cause and the typology strategy of landslide mitigationwhich is divided into two steps, the preliminary and mitigation design. Allthese steps are finally found to be in close connection to the spatialarrangement which is very useful to decide safety precaution before theevent of a landslide.
Analysis Implementation of Occupational Health and Safety Management System in Building Construction Project at “7 in 1” Project, Yogyakarta State University
Authors: Sigit Adityawan , Azizah Aristya Noor
Published: May 2019

In Indonesia, one of the guidance of Occupational Health andSafety Management System (OHSMS) is regulated in the Minister ofLabor Regulation number PER. 05/MEN/1996. This research aims to findout and analyze about the representation of OHSMS on “7 in 1” Project, Yogyakarta State University, based on this regulation. The method used inthis research is a quantitative method that is by direct observation in thefield and descriptive qualitative method that tends to use analysis. As forthe data collection in this research by doing interviews or unstructuredinterviews that intend to obtain information about the implementation ofOHSMS in related projects. Data related to the OHSMS that has beenobtained later will be discussed and will be compared with the Minister ofLabor Regulation. Based on the research that has been done, it can beconcluded that the OHSMS in “7 in 1” Project has implemented theOHSMS according to PER. 05/MEN/1996. However, due to severalfactors, there are cases that cause the OHSMS implementation is less thanmaximum, so it is necessary to increase the implementation of OHSMS inthe field to minimize accident at the construction project site.
Keeping the Floating House Afloat in Banjarmasin: Implementation Potential of EPS Floating Technology for Foundation Engineering
Authors: Prihatmaji Yulianto P. , Nugraha Dimas H.
Published: May 2019

Banjarmasin, South Kalimantan has traditional house in form ofLanting/raft house. At present the population of Lanting house is lacking, among others, due to the funding of bamboo house is quite expensive. Ministry of Public Works and Housing R and D Agency was built Floatingmeeting hall in Semarang 2016 ago with EPS technology. Since thefoundation of the bamboo is more expensive and the number of bamboo isfewer, this study eagers to see to what extent the typology analysis ofexsisting Lanting house, to see the characteristic of floaing technology(EPS) as a substitude of conventional lating foundation, the engineering ofLanting house design using EPS and how is the comparation of materialcharacteristic of local float and EPS pontoon. Research approach withqualitative and supported by quantitative data. Conclusions are theconstruction of Lanting house roof generally uses saddle shape, a light andsimple roof construction. All Lanting houses in Martapura river usessaddle roof construction. The load capacity EPS per module meter is 5 tonsper kg. This Pontoon technology is the result of fabrication that can beapplied for various structural and architectural purposes both on land andon water. Having advantages other than environmentally friendly and thedimensions of structural materials can be custom this material has a heatresistance of up to 600. From Comparison of characteristic of local floatmaterial and EPS pontoon, EPS pontoon is reliable and better than floatmaterial.
The Effect of Sungai Bilu’s Riverside Design to the Physical Characteristics of the Riverside Architectural Spatial Identities in Banjarmasin
Authors: Wulandari Fitri , Aina Noor
Published: May 2019

The growth of population, the urbanization phenomenon, andeconomy factor raise the amount of riverside settlement in Banjarmasin. Theincrease of the riverside settlement also raises an equal amount of problemssuch as the slum existence, reducing the river width-space, and architecturalidentity. To solve this problem, the government was beginning to design theriverside settlement. As a pilot project, the government has begun to designthe Sungai Bilu Riverside settlement on the Martapura Riverside. Theriverside ideal design should not drop the characteristic of the spatial andarchitectural riverside settlement identity of Banjarmasin but strengthen. There are some changes in Sungai Bilu’s Riverside settlement design. Thefirst is the new design of titian, second is the fence design, and the last is thechanging material. Based on the research, the design is not in line with thephysical characteristic of the Banjarmasin Riverside settlement.
Recalling the sonic perception of visually impaired people of Surabaya’s urban parks
Authors: Mediastika Christina E. , Sudarsono Anugrah S. , Kristanto Luciana , Tanuwidjaja Gunawan , Sunaryo Rony G. , Damayanti Rully
Published: May 2019

Urban parks in a developing country hardly accommodatepeople with disability. The objective of this study is to investigate thepossibility of improving urban parks using the perception of visuallyimpaired people of urban parks’ sonic environment. This study wasconducted off-site the urban park using a questionnaire survey with twogroups of participants: sighted people (35 participants) and visuallyimpaired people (35 participants). The analysis was conducted usingsemantic analysis of the word used for explaining the sonic environment. This study shows that the visually impaired participants explained thesonic environment with more terminologies (56 terminologies for visuallyimpaired participants and 32 terminologies for sighted participants). Itindicates the engagement with the sonic environment is higher for thevisually impaired participants compared to the sighted participants. Ingeneral, the visually impaired participant perception of urban parksrepresents a similar terminology, but with more perception compared to thesighted participants, i.e., safety, directivity, and space. The later stage is touse the on-site method to validate and enrich this finding to arrive at thedesign proposition for the improvement of urban parks.
Flushing Methods in Polder Drainage System to Obtain Better Environment Quality
Authors: Wahyudi S. Imam , van de Lustgraaf Robbe , de Moor Loic , Heikoop Rick , Adi Henny Pratiwi
Published: May 2019

The Banger Polder is a polder system which covers an area ofaround 670 hectares in Semarang city. There are about 90,000 inhabitantsliving in this area. The Polder area is vulnerable to flooding caused by highwater levels during high tide and more during heavy rain. Climate changewhich may cause high sea level forms a serious threat for the coastal areasin Semarang as delta area. Objectives of the paper are to create causerelation flowchart, to analyse flushing zone, and to plan implementationand maintenance of flushing system. Regarding the research methods forimplementing the case, there are seven parties interviewed and observedrelated to flushing program. The parties are described with their interests, influence and (optional) negative impacts of stakeholders. The Causalrelation tree of flushing process is divided into 5 different steps:innovative, quality effect, operational effect, qualification effect, andmonitor effect. According to the observation and interview result, flushingzone in Banger polder area can be divided into 5 zones which areimplemented by some institutions; SIMA, PSDA, BBWS and Bappeda. Agood implementation and maintenance is needed to maintain the flushingsystem.
Analysis of temporal variation characteristics on water quality along Code River, Indonesia
Authors: Fajri Joni Aldilla , Haikal A Muhammad , Nurjanah Putri , Dwi A Mayu , Zahra P Mulyani , Priscaningtyan  , Pratama Rangga , Builda P.A Arsitika , Muhanza Arief , Siswoyo Eko , Rahayu Aster , Juliani Any , Hakim Luqman
Published: May 2019

Physicals, chemicals, and microbial parameters were analysedalong the Coder River to reveal the temporal influence on water qualitycharacteristics. From December 2017 to March 2018, we collected twice amonth surface water sample at the nine monitored sampling site. Theresults indicate that the temporal factor has a significant impact, particularly in wet and dry seasons, on increasing the chemical oxygendemand (COD), ammonia-nitrogen (NH3-N), total coliform (TC), andfaecal coliform (FC) above the local government standard. Overall, thewater quality in the Code River is mainly influenced by the anthropogenicpollution sources that did not decrease during the dry season because of thelow water flow.
An innovative approach to tracking sediment transport along roads
Authors: Boving Thomas , Lewis Tabatha , Siswoyo Eko
Published: May 2019

A study of sediment transport was carried out in the New England area of the United States where large quantities of sediments and other debris accumulate along roads. These sediments are mostly transported by roadway runoff and stormwater drainage structures, where present, tend to concentrate them. However, polluted sediments might also find their way into ecologically sensitive areas. Our research aimed at tracking the transport of these sediments as they move along a road. Further, we attempted to quantify the rate by which the sediments were transported. Glass microbeads in the size range of sand were released as a tracer of sediment transport at six comparable locations. Over a period of 10 months, their movement was tracked using microscopy. Our results indicate that this type of tracer was successful in following along the sediment transport. More research is required to establish this new method under different stormwater runoff regimes or different roadside maintenance conditions.
Bond Behaviour Between Reinforcing Bars and Geopolymer Concrete By Using Pull-out Test
Authors: Nurwidayati Ratni , Ekaputri Januarti , Triwulan  , Suprobo Priyo
Published: May 2019

This paper presents the effect of the reinforcing bar diameter (db) and concrete cover thickness to reinforcing bar diameter ratio (c/db) to the bond strength between reinforcing bar and geopolymer concrete by using the experimental pull-out test. The mass ratio of sodium hydroxide (NaOH) to sodium silicate (Na2SiO3) was 2.5 with an 8 M concentration of sodium hydroxide were used in this research. Class F fly ash from Suralaya Power Station, Banten, Indonesia was used as raw material to produce geopolymer concrete. The maximum diameter of coarse aggregate was 10 mm. The result indicated that the maximum pull-out load on reinforcing bar diameter of 16 mm was higher than the diameter of 13 mm. The pull-out failure occurred on the ratio of c/db more than equal of 4.3. The bond strength increased as the ratio of c/db increased, up to 4.3. However, more than 4.3 was the insignificant effect.
Analysis Effect of Cloud Cover, Wind Speed, and Water Temperature to BOD and DO Concentration Using QUAL2Kw Model (Case Study In Winongo River, Yogyakarta)
Authors: Marlina Nelly , Melyta Dirja
Published: May 2019

Winongo river is one of the rivers in the province of D.I. Yogyakarta that included in the category of contaminated. the research aims to learn on the effect variation of cloud cover, wind speed, and water temperature on BOD and DO concentrate in order to choose water quality management strategy at Winongo river. This research conducting a simulation with variating the cloud cover variables (0%, 69%, and 88%), wind velocity (0 m/second, 0,211 m/second and 1,22 m/second), and so the water temperature air (24,2°C, 28,14°C, and 30,6°C). The modeling result shows that cloud cover variables don’t affect the DO-BOD concentrate at Winongo river (sig = 0). While the wind velocity variables only have a small effect on the changed of DO and BOD at Winongo river (sig > 0,05). And for water temperature variables had the significant effect on the concentration changed of DO (sig < 0,05) and have a small effect on the changed of BOD at Winongo river (sig > 0,05). The DO and BOD management strategy can be done by making of riparian buffer strips or planting vegetation on the riverbank Winongo, build a WWTP Communal in every district along the river Winongo
Thornthwaite-Mather water balance analysis in Tambakbayan watershed, Yogyakarta, Indonesia
Authors: Nugroho Adam Rus , Tamagawa Ichiro , Riandraswari Almaika , Febrianti Titin
Published: May 2019

Depok sub-district in Yogyakarta is one of the most populous areas, which also develops rapidly. The Tambakbayan watershed, which includes Depok sub-district, has been seen as one crucial watershed in Yogyakarta. This study conducted a Thornthwaite-Mather water balance analysis in the watershed in order to understand its hydrology capability. The result of the study on three stream areas of the watershed (upstream, midstream and downstream) shows that the dry months begins in May- June and ends in September-October. August tends to be the driest month in the year with total deficit value reaches 179.2 mm. Still, the annual rainfall is higher than the annual evapotranspiration. The results also show that the lower area of the watershed has a lower capability to preserve water. However, the watershed still sufficient in providing the domestic water demand in the current state. Comprehensive water management plans suggested to be applied to protect the watershed from overstressing the water resources, especially in the downstream area.
Quantifying Delay Risk Potential of Road Projects during Construction Phase: A Case Study
Authors: Anggraini Devi , Hatmoko Jati Utomo Dwi , Handajani Mudjiastuti
Published: May 2019

A comprehensive plan is required to anticipate risks in a construction project. In practice, however, anticipated or unanticipated risks may eventually lead to delays in the project completion date. The aim of this research is to quantify the delay risk potential of a road project during the construction phase. A project at Batang-Kendal road has carried out thorough planning for all required aspects. However, in the implementation of a project, there is often the occurrence of irregular events, which act as a case study for this research, from which delays were identified, observations mapped and semi-structured interviews conducted with project stakeholders, i.e. owner, contractors and supervisory consultants. An instrument was developed to assess and quantify the project risks identified using a 1 to 5 Likert scale. The results showed nine types of delay risks and 32 sub risks. The quantification of these risks was classified into four risk levels, i.e. extreme (6.25%), high (53.13%), medium (34.37%) and low (6.25%). These findings may represent delay risk potentials of typical road projects during the construction phase, from which lessons can be learned. The assessment instrument proposed can also be used for other road projects, which will be beneficial for project stakeholders in anticipating delay risk potentials.
Utilization of Parupuk Plants (Phragmites Karka) To Reduce Mercury Levels In Waters Former Of Diamond And Golden Mining
Authors: Ni’mah Lailan , Anshari Muhammad Adzhari , Saputra Hari Apriyan , Rahmadi Adi , Fitriati Ulfa
Published: May 2019

The waters in Cempaka Sub-district have been contaminated by heavy metals that exceed the quality of waste water standard. The process that can be used to reduce waste pollution is by phytoremediation method. Phytoremediation is a method of waste degradation using plant capability. One of the plants is the parupuk plant (phragmites karka). Parupuk plant (Phragmites karka) has a big ability to degradation the waste. Parupuk plant was included in poaceae family. The purpose of this study is to analyze the influence of mass variations and the duration of immersion of parupuk plants in absorbing heavy metals mercury. In this study begins with static phytoremediation was performed by plant mass variation of 0.5 kg, 1 kg and 1.5 kg. The Soaking period of 8 hours, 80 hours, 152 hours and 224 hours. From the result of research known, the effective condition for the parapuk plant to absorbs the heavy metals mercury is at the 8th hour of phytoremediation and 1.5 kg parupuk plant can absorb the heavy metals mercury by 90,74%.
Wastewater Disinfection Efficiency Using One- Step and Two-Step Chlorination
Authors: Islami Brilyana Bela , Priadi Cindy Rianti , Adityosulindro Sandyanto , Abdillah Ayik
Published: May 2019

One-step chlorination (OSC) is a common method, generally implemented as the last step of wastewater treatment plants (WWTPs) and water treatment plants (WTPs). Improving disinfection efficiency is necessary to increase pathogen and organic matter removal. Two-step chlorination (TSC) has been studied as a new method of chlorination. This study aimed to compare OSC and TSC efficiency for coliform and organic matter removal. Chlorination was performed in a batch system and at laboratory scale using calcium hypochlorite. Samples were collected from WWTP effluent in an industrial estate located in Indonesia. The samples underwent the adsorption process beforehand. Chlorine dosage at 10-110 mg/L, at a 10-200-second time interval, and with a dosage ratio of 3:1-7:1 were evaluated. Results showed that the optimum dose for OSC is 80 mg/L. The optimum condition for TSC is a 50-second time interval and a 5:1 dosage ratio between the two steps. With the same total dose as in OSC, TSC improved efficiency for COD, BOD, and coliform removal up to 12%, 35%, and 0.39-log reduction, respectively (p < 0.05). Moreover, trihalomethane (THM) formation was reduced up to 13% by using the TSC method. However, an increasing ammonia concentration occurred because of the OSC and TSC processes (p < 0.05).
The utilization demineralized rice husk waste for biofuel source via pyrolysis: thermogravimetric analysis and kinetic study
Authors: Wijayanti Hesti , Nata Iryanti Fatyasari , Jelita Rinny
Published: May 2019

Rice husk is considered as agricultural waste that causes environmental problem during its handling. In this study, rice husk was treated with acid (citric acid and nitric acid) solutions prior used as raw material for producing biofuel and chemicals via pyrolysis. The pyrolysis behaviors of rice husk treated with water and acid solutions have been investigated through thermogravimetric analysis from room temperature to 600 oC at the heating rate of 10oC/min under 50 ml/min nitrogen flow. Demineralization treatment using strong acid (nitric acid) solution showed more impacts to the rice husk in thermogravimetric analysis, i.e. lower ash content, less minerals content and thermal stability increased. One step model kinetic resulted the lowest activation energy (12.8709 kJ/mol) occured at the 5% nitric acid solution treatment. Excellent agreement between the experimental data and model predictions was found with 8.63% of the relative error. In other words, demineralization using 5% nitric acid solution would improve rice husk performance during its pyrolysis reaction for producing biofuel.
The Pattern of Water Flow in A Tidal Pond, Macro Water System on the Tidal Farms with Numerical Hydrodynamics Model Approach: A Case Study Of Tidal Farm In South Kalimantan
Authors: Rusdiansyah Achmad , Prasetia Hafiizh , Annisa Nova
Published: May 2019

The water flow pattern and velocity caused by tidal water and the effect of wind in the tidal pond can be examined by developing a 2-D Hydrodynamic numerical model. The numerical model is based on the continuity equation and the 2-D momentum equation, these two equations are solved by finite different methods which are explicit Mac. Cormack. The validity of the model was tested with a numerical model experiment that is a 2-D water flow model simulation in a flow field in the form of a rectangular and rectangular pond water flow pattern. The application of this model will be carried out on tidal ponds, and is expected to provide satisfactory results.
Performance Comparison Between Copper Cables and Fiber Optic in Data Transfer on Banjarmasin Weather Temperature Conditions
Authors: Khatimi Husnul , Setya Wijaya Eka , Rizky Baskara Andreyan , Sari Yuslena
Published: May 2019

Copper wire cable and fiber optic cable are two communication media that are widely used in building data communication networks in today’s modern era. For network administrators, choosing the right type of cable to build a network is a must. Air temperature is one of the external factors that can affect the performance of network equipment. This paper provides a comparative analysis of the differences in performance between the use of fiber optic cables and copper wire cables which are capable of transferring data of 1 Gigabit per second. Performance measurement analysis includes the ability to transfer data from both media such as latency, throughput, and packet loss. For testing latency and throughput is done by sending as many as 65,000 data 30 times for each media. Whereas for packet loss testing is done by sending 10,000 data within 1 minute using test bandwidth on the Mikrotik router. From the test results, it can be seen that there is an effect of temperature changes on the performance of copper wire cable and fiber optic cable. The higher the air temperature, the packet loss, and latency will increase. As for the throughput value, the temperature only affects the throughput value on fiber optic cable and does not affect throughput on the copper wire cable.
Phytotherapeutische Behandlung entzündlicher Leiden von Haut und Schleimhaut in der Hausarztpraxis
Authors: Jobst Detmar
Published: May 2019

Etwa 9 % aller Beratungsanlässe in der allgemeinmedizinischen Praxis erfolgen aufgrund von Hauterscheinungen 1. Es sind sicherlich einige mehr, nimmt man die Schleimhautbeschwerden an Mund und Nase, an Darmausgang und Genitalien dazu. Diese Hautprobleme bereiten z. T. erhebliche Beschwerden. Etliche Patienten fragen explizit nach Behandlungsmöglichkeiten ohne Kortison und ohne Antibiotika.
Wahrgenommene Belastung von Müttern sprachentwicklungsgestörter Kinder
Authors: Rennecke Lisa , Melzer Jessica , Ronniger Pola , Petermann Franz
Published: May 2019

Hintergrund Sprachentwicklungsstörungen beeinflussen nicht nur die betroffenen Kinder, sondern das gesamte familiäre Umfeld. Insbesondere Mütter sprachentwicklungsgestörter Kinder erleben hohe psychische und physische Belastungen.

Methode Es wurden n = 40 Mütter von sprachauffälligen und n = 39 Mütter von sprachunauffälligen Kindern zu einem Erhebungszeitpunkt untersucht. Anhand von multivariaten Varianzanalysen und Regressionsanalysen wurden Gruppenunterschiede und mögliche, das Belastungserleben beeinflussende, Prädiktoren ermittelt.

Ergebnisse Die Ergebnisse zeigen, dass Mütter von sprachlich auffälligen Kindern deutlich höhere Belastungswerte insbesondere hinsichtlich depressiver Symptome aufweisen als Mütter von unauffällig entwickelten Kindern.

Diskussion Die Behandlung und Förderung von Sprachentwicklungsstörungen sollte sich zukünftig nicht nur auf kindzentrierte Maßnahmen beschränken, sondern vermehrt auch Eltern gezielt in die Therapie integrieren.
Ein Fall von kutaner Lupus erythematodes-ähnlicher Tattoo-Reaktion (diskoider Lupus erythematodes bei rotem Tattoo): Histopathologie, Komplikationen und Therapie
Authors: Sawallich K. , von den Driesch P.
Published: May 2019

Die kutane Lupus erythematodes-ähnliche Tattoo-Reaktion (diskoider Lupus erythematodes bei rotem Tattoo) ist die Diagnose einer seltenen, typischerweise histologisch gestellten Erkrankung, die bei Patienten im Rahmen von Tätowierungen mit rotem Farbstoff auftreten kann. Es kommt zu Schwellungen mit Induration, Juckreiz und Ausbildung von erhabenen, hyperkeratotischen Plaques im Bereich rot tätowierter Tattoos. Histologisch ist die kutane Lupus erythematodes-ähnliche Tattoo-Reaktion gekennzeichnet durch eine Interface-Dermatitis sowie eine lymphozytenreiche, perivaskuläre und periadnexielle Entzündung, die sehr an einen chronisch diskoiden Lupus erythematosus erinnert. Symptome eines systemischen Lupus erythematodes treten nicht auf. Therapeutisch sind läsionale oder orale Steroide empfohlen.