bluuebunny/crossref_metadata_2025 huggingface dataset:
Principal components of short-term variability in the ultraviolet albedo of Venus
Authors: Kopparla Pushkar , Lee Yeon Joo , Imamura Takeshi , Yamazaki Atsushi
Published: May 2019

We explore the dominant modes of variability in the observed albedo at the cloud tops of Venus using Akatsuki UVI 283 nm and 365 nm observations, which are sensitive to SO2 and unknown UV absorber distributions respectively. The observations, taken over the period Dec. 2016 to May 2018, consist of images of the dayside of Venus, most often observed at intervals of two hours, but interspersed with longer gaps. The orbit of the spacecraft does not allow for continuous observation of the full dayside and the unobserved regions cause significant gaps in the datasets. Each dataset is subdivided into three subsets for three observing periods, the unobserved data are interpolated, and each subset is then subjected to a principal component analysis to find six oscillating patterns in the albedo. Principal components in all three periods show similar morphologies at 283 nm, but are much more variable at 365 nm. Some spatial patterns and the timescales of these modes correspond to well-known physical processes in the atmosphere of Venus such as the ~4-day Kelvin wave, 5-day Rossby waves, and the overturning circulation, while others defy a simple explanation. We also a find a hemispheric mode that is not well understood and discuss its implications.
A census of massive stars in NGC 346
Authors: Dufton P. L. , Evans C. J. , Hunter I. , Lennon D. J. , Schneider F. R. N.
Published: May 2019

Spectroscopy for 247 stars towards the young cluster NGC 346 in the Small Magellanic Cloud has been combined with that for 116 targets from the VLT-FLAMES Survey of Massive Stars. Spectral classification yields a sample of 47 O-type and 287 B-type spectra, while radial-velocity variations and/or spectral multiplicity have been used to identify 45 candidate single-lined (SB1) systems, 17 double-lined (SB2) systems, and one triple-lined (SB3) system. Atmospheric parameters (Teff and log g) and projected rotational velocities (ve sin i) have been estimated using TLUSTY model atmospheres; independent estimates of ve sin i were also obtained using a Fourier Transform method. Luminosities have been inferred from stellar apparent magnitudes and used in conjunction with the Teff and ve sin i estimates to constrain stellar masses and ages using the BONNSAI package. We find that targets towards the inner region of NGC 346 have higher median masses and projected rotational velocities, together with smaller median ages than the rest of the sample. There appears to be a population of very young targets with ages of less than 2 Myr, which have presumably all formed within the cluster. The more massive targets are found to have lower projected rotational velocities consistent with previous studies. No significant evidence is found for differences with metallicity in the stellar rotational velocities of early-type stars, although the targets in the Small Magellanic Cloud may rotate faster than those in young Galactic clusters. The rotational velocity distribution for single non-supergiant B-type stars is inferred and implies that a significant number have low rotational velocity (≃10% with ve <  40 km s−1), together with a peak in the probability distribution at ve≃ 300 km s−1. Larger projected rotational velocity estimates have been found for our Be-type sample and imply that most have rotational velocities between 200–450 km s−1.
L’identification des consonnes et voyelles nasales par les adultes implantés cochléaires francophones
Authors: Borel Stéphanie , Serniclaes Willy , Sterkers Olivier , Vaissière Jacqueline
Published: May 2019

Les scores de reconnaissance des 11 voyelles /i,e,ɛ,a,y,ø,o,u,ã,ɛ̃,ɔ̃/ et 16 consonnes /p,t,k,b,d,g,f,s,ʃ,v,z,ʒ,l,m,n,ʁ/ du français,
prononcées par 3 orthophonistes, à voix directe, sans répétition, ont été analysés à un délai post-implant précoce (entre 1 et 4 mois
post-IC) et tardif (entre 12 et 120 mois). Les résultats montrent qu’après implantation cochléaire, les trois voyelles nasales /ɑ̃,ɛ̃,ɔ̃/ sont
significativement moins bien reconnues que les huit voyelles orales, aussi bien au stade précoce (36% vs. 77%, p < 0.05), qu’au stade
tardif (57% vs. 87%, p < 0.05). Dans 98% des cas de confusions au stade précoce et 94% au stade tardif, les voyelles nasales ont été
confondues non pas entre-elles, mais avec une voyelle orale. Les confusions mises en évidence dans cette étude sont très différentes
de celles habituellement observées chez les personnes avec un appareillage auditif ou même chez les normo-entendants, chez qui les
voyelles nasales sont en général confondues entre elles. Dans la catégorie des consonnes, le trait de nasalité est bien reconnu, mais /n/
a tendance à être reconnu comme /m/.
A New On-The-Move Integer Ambiguity Determination Method for Precise Positioning of Highly Maneuvering Ground Vehicles
Authors: Jeon Jong-Hwa , Yoo Sang-Hoon , Choi Jeung-Won , Sung Tae-Kyung
Published: May 2019

In the conventional RTK (Real Time Kinematics), carrier phase measurements should be collected for several minutes in stationary state in order to determine the IA (Integer Ambiguity) in carrier phase to get the precise position. To determine the IA in motion, several OTM-RTK (On-The-Move RTK) methods have been proposed using vehicle dynamics or augmenting additional sensors. This paper presents a new OTM-RTK technique to determine the IA without aids of external sensors for precise positioning of highly maneuvering ground vehicles. In the proposed technique, the initial IA is determined fast by estimating precise position change during epochs using dual frequency carrier phase measurements. Therefore, IA determination of the proposed method is not influence by vehicle dynamics. By field experiment, performance of the proposed technique is analyzed including IA determination time according to vehicle dynamics and the number of visible SV.
Feature coordinate estimation by time differenced vision/GPS/INS
Authors: Lee Yu dam , Choi Kwang Ho , Yoo Won Jae , Kim La Woo , Lee Hyung Keun
Published: May 2019

This paper proposes a multi-baseline method to estimate absolute coordinates of point clouds and the camera attitude parameter utilizing feature points in successive images. Conventionally, 3D map generation methodologies have been based on images acquired by aerial or land vehicles. Pixels corresponding to known landmarks are manually identified at first. Next, the coordinates are directly geo-referenced and automatically allocated to pixels with high-quality Global Positioning System (GPS) and Inertial Navigation System (INS). However, it is difficult to obtain accurate coordinates by the conventional methodology with low-cost GPS and INS. With camera positions and attitude parameters, image-based point clouds can be compensated accurately. A simulation was carried out to evaluate the performance of the proposed method.
Network-based RTK Performance for Drone Navigation
Authors: Bae Tae-Suk
Published: May 2019

The Real-time Kinematic (RTK) was predominantly used for the positioning of the ground applications including moving vehicles. Due to the limited baseline lengths, the Network-based RTK (NRTK) was introduced since late-1990s, and successfully applied to the high precision surveying purposes for more than a decade. We conducted the experiments to analyze the performance of the single-baseline RTK (SRTK) as well as the NRTK using one of the operational NRTK systems of Korea, which is the Virtual Reference Stations (VRS) technique. A total of 46 Continuously Operating Reference Stations (CORS) are used for both SRTK and NRTK to secure the redundancy of the baseline lengths. Since the CORS are quite evenly located at an average of 50-60 km, the analysis of error behavior is restricted in terms of seamless variation of baseline length. Therefore, on top of the existing CORS, we simulated the GNSS RINEX data of the rover (that is, the drone position) at a specific location to get the uniform distribution to the reference stations. Furthermore, the rover was generated for different altitude to evaluate the performance of vertical component of the NRTK system. The CORS GNSS data were obtained at 1 Hz in RINEX format, and the low-cost receiver (ublox) was used for the rover with same interval, single-frequency capability. The correction information from the NRTK server was simultaneously logged for post-processing using the open source software RTKLIB. The percentage of ambiguity resolution was quite reasonable up to 50 km, and drastically drops down as the baseline gets longer. The generated VRS was located with an offset of a few meters in a certain direction, and the horizontal errors also showed a similar pattern. The vertical error behavior due to the tropospheric model deficiency should also be analyzed further.
Performance Evaluation of Multi Radio Integrated Navigation System under Navigation Warfare in M&S Software
Authors: Kim Heyone , Son Jae Hoon , Oh Sang Heon , So Hyoungmin , Hwang Dong-Hwan
Published: May 2019

In this paper, a modelling and simulation software is designed in order to evaluate the performance of a multi radio integrated navigation system and the performance evaluation results are presented. The modelling and simulation software is divided into navigation algorithm module, navigation environment generation module, and graphic user interface module with performance evaluation algorithm. In order to show the validity of the design, the modelling and simulation software for GPS, KNSS, Loran-C, eLoran, and DME/VOR is implemented in C++ under Windows OS environment. Accuracy, integrity, continuity and availability are evaluated for the multi radio integrated navigation system in the modelling and simulation software. The performance evaluation results show that the designed modelling and simulation software can be effectively used for the performance evaluation of multi radio integrated navigation systems.
Development of GNSS Receiver for Mobile CORS with RTK Correction Services Using Cloud Server
Authors: Manurung Parluhutan , Pramujo Hari , BP Manurung Joshua
Published: May 2019

Requirements for precise Real Time Kinematic (RTK) positioning have been significantly growing in Indonesia since early 2010, resulting from the national programs on village mapping, land cadastre certification, infrastructure developments, and one map policy. The activities require a sub-decimetre level of positioning accuracy to produce detail maps to the scale of 1:500. RTK positioning with CORS should be the most reliable technique to meet the accuracy level. However, the existing distribution of Indonesia CORS Network, consisting of 150 active stations, is still far from adequate since the inter-station distances are of around 500 km while an ideal range should be less than 50 km. This paper related to an initiative for the development of a GNSS receiver that can be transportable and easily set up in the field as a base station to provide RTK CORS correction services with local contents. The initiative supports national efforts on the densification of Indonesia CORS Network to better distribution. The development was started using the Tersus OEM GNSS board series BX305, including the integration of the board to a mini PC. Further developments have been made covering the following, namely: i) to add a long-term stable power supply in the receiver, ii) customization of receiver command settings, iii) to add a GSM modem and internet protocol for data communication from the receiver to a cloud server, iv) installation of SNIP software in a cloud server to provide CORS corrections with NTRIP caster, and v) testing the NTRIP client performance in the rover receiver. Results from the land cadastre surveys carried out in Bandung, Padang and Tangerang Cities show that the length of time for the fixed positioning with resolved ambiguities could be obtained within less than 5-7 seconds with the rover locations less than 10 km from the base station. A longer time to obtain fixed solutions required for the distance at the range of 10 to 20 km, and it is becoming more difficult to get fixed solutions over 20 km. Further developments would be carried out using affordable price GNSS OEM boards provided by different manufacturers.
Study the capabilities of RTK Multi GNSS under forest canopy in regions of Indonesia
Authors: Andreas Heri , Zainal Abidin Hasanuddin , Anggreni Sarsito Dina , Pradipta Dhota
Published: May 2019

For more than two decade, the position on the earth can be precisely determined “real-time” in the order of few centimeters by Real Time Kinematic (RTK) GNSS (Global Navigation Satellite Systems) Method. Nevertheless, few limitations are still recognized such as degradation of accuracy against limited satellite visibilities (e.g. heavy satellite obstructions from forest canopy). It usually takes time to resolve the ambiguities or even in many occasion resulted in failure. Fortunately since recent years to the future seems more satellite systems beside GPS and GLONASS are being launched such as BEIDOU, GALILEO, QZSS, etc. It means that more satellite will be existed above the sky. The term GNSS has changed into Multi GNSS. This Multi GNSS is theoretically adding the value to previous GNSS System like GPS; problems of limited satellite visibilities (e.g. under forest canopy) to the position accuracy perhaps will reduce. Within this paper we try to do study the capabilities of RTK Multi GNSS under forest canopy in Indonesia. We observed by RTK in the forest areas which have canopy of 40 to 90 percent. As conclusion we found improvement in positioning result of even area of very limited satellite visibilities.
Long-range Single Baseline RTK GNSS Positioning for Land Cadastral Survey Mapping
Authors: Bramanto Brian , Gumilar Irwan , Taufik Muhammad , Hermawan I Made D. A.
Published: May 2019

In Indonesia, Global Navigation Satellite System (GNSS) has become one of the important tool in survey mapping, especially for cadastral purposes like land registration by using Real Time Kinematic (RTK) GNSS positioning method. The conventional RTK GNSS positioning method ensure high accuracy GNSS position solution (within several centimeters) for baseline less than 20 kilometers. The problems of resolving high accuracy position for a greater distance (more than 50 kilometers) becomes greater challenge. In longer baseline, atmospheric delays is a critical factor that influenced the positioning accuracy. In order to reduce the error, a modified LAMBDA ambiguity resolution, atmospheric correction and modified kalman filter were used in this research. Thus, this research aims to investigate the accuracy of estimated position and area in respect with short baseline RTK and differential GNSS position solution by using NAVCOM SF-3040. The results indicate that the long-range single baseline RTK accuracy vary from several centimeters to decimeters due to unresolved biases.
Navigation Performance Enhancement Using IMM Filtering for Time Varying Satellite Signal Quality
Authors: Jwo Dah-Jing , Chang Shu-Ming , Lai Jen-Hsien
Published: May 2019

A novel scheme using fuzzy logic based interacting multiple model (IMM) unscented Kalman filter (UKF) is employed in which the Fuzzy Logic Adaptive System (FLAS) is utilized to address uncertainty of measurement noise, especially for the outlier types of multipath errors for the Global Positioning System (GPS) navigation processing. Multipath is known to be one of the dominant error sources, and multipath mitigation is crucial for improvement of the positioning accuracy. It is not an easy task to establish precise statistical characteristics of measurement noise in practical engineering applications. Based on the filter structural adaptation, the IMM nonlinear filtering provides an alternative for designing the adaptive filter in the GPS navigation processing for time varying satellite signal quality. The uncertainty of the noise can be described by a set of switching models using the multiple model estimation. An UKF employs a set of sigma points by deterministic sampling, which avoids the error caused by linearization as in an extended Kalman filter (EKF). For enhancing further system flexibility, the fuzzy logic system is introduced. The use of IMM with FLAS enables tuning of appropriate values for the measurement noise covariance so as to obtain improved estimation accuracy. Performance assessment will be carried out to show the effectiveness of the proposed approach for positioning improvement in GPS navigation processing.
A GPS multipath mitigation technique using correlators with variable chip spacing
Authors: Lee Jin Hyuk , Lim Deok Won , Noh Jae Hee , Jo Gwang Hee , Park Chansik , Ahn Jae Min , Lee Sang Jeong
Published: May 2019

Various methods have been studied to mitigate the influence of multipath signals, representative methods focused the correlator structure are the Narrow Correlator and the Multipath Elimination Technique (MET). It is known that the MET has better performance than Narrow Correlator but it requires more complexity. In this paper, we propose a technique that has similar performance to the MET and it uses only three correlators like the Narrow Correlator. This technique switches the chip spacing of the correlators for each Predetection Integration Time (PIT) and applies it to the MET. For the performance analysis, we implemented a software platform and compared the code tracking error of the proposed technique with that of the Narrow Correlator and the MET.
Real-Time Orbit Determination of Korean Navigation Satellite System based on Multi-GNSS Precise Point Positioning
Authors: Kim Gimin , Oh Hyungjik , Park Chandeok , Seo Seungmo
Published: May 2019

This study proposes real-time orbit/clock determination of Korean Navigation Satellite System (KNSS), which employs the kinematic precise point positioning (PPP) solutions of multiple Global Navigation Satellite System (multi-GNSS) to compensate for receiver clock oﬀset. Global visibility of KNSS satellites in terms of geometric coverage is first analyzed for the purpose of selecting optimal locations of KNSS monitoring stations among International GNSS Service (IGS) and Multi-GNSS Experiment (MGEX) network. While the receiver clock oﬀset is obtained from multi-GNSS PPP clock solutions of real observation data, KNSS measurements are simulated from the dynamically propagated KNSS reference orbit and the receiver clock oﬀset. The oﬀset and drift of satellite clock are also generated based on two-state clock model considering atomic clock noise. Real-time orbit determination results are compared with an artificially generated true or bit, wihch show 0.4m and 0.5m of 3-dimensional root-mean-square (RMS) position errors for geostationary (GEO) and ellitically-inclined-geosynchronous-orbit (EIGSO) satellites, respectively. The overall results show that the real-time precise orbit determination of KNSS should be achievable in meter level by installing KNSS-compatible multi-GNSS receivers on the IGS and/or MGEX network. The overall process can be also used to verify integrity of KNSS monitoring stations.
GNSS Array Antenna for Mitigating Multipath Errors in Urban Environment
Authors: Tsujii Toshiaki , Yonebayashi Kenta , Fujiwara Takeshi , Ohsawa Sohshi
Published: May 2019

GNSS signal vulnerability has been a major concern especially for safety-of-life applications such as aircraft operations. Therefore, a GNSS array antenna technology was investigated focusing on beamforming to mitigate multipath errors in urban environment including airport surfaces. A commercial three-element GNSS antenna and RF-Front end were used to obtain digital IF data. The recorded In-phase/Quadrature IF data for three antennas were combined with proper weight to form beams towards satellites after so-called hardware biases were calibrated. Test results in multipath-rich environment demonstrated that 50-70% reduction of pseudorange errors due to multipath were possible if the beamforming algorithms were applied.
Design of GPU Based Non-coherent Signal Tracking Module for Real-time GNSS SDR
Authors: Park Jong-Il , Park Kwi Woo , Park Chansik
Published: May 2019

In this paper, we design and implement GPU-based non-coherent GPS signal tracking module for real-time SDR. When using CPU and GPU simultaneously, the signal tracking module should be designed considering the memory bottleneck between the two processors. The basic non-coherent module, which accumulates the 1msec correlation value 20 times, is changed to accumulate M(20/N) times of Nmsec units. From the experiments using real GPS signals, the computational performance of N=20 is improved by 80% compared to N=1. Therefore, the implemented SDR using notebook computer can tracks more channels simultaneously in the real time.
Determination of the relationship between Vietnam national coordinate reference system (VN-2000) and ITRS, WGS84 and PZ-90
Authors: Pham Thi Hoa , Nghiem Quoc Dung , Trinh Thi Hoai Thu , Pham The Huynh , Le Thi Nhung
Published: May 2019

In July 2000, Hanoi-72 reference system was replaced by the Vietnam reference system, namely as VN-2000 as an official geodetic background system in Vietnam. Ministry of Natural Resources and Environment of Vietnam has reported the transformation parameters between VN-2000 and WGS84. Nevertheless, there is a need to estimate a new transformation parameter set between VN-2000 and WGS84 because WGS84 has been updated. In addition, there is now a lack of an accurate published set of parameters for transformation from VN-2000 to not only the International Terrestrial Reference System ITRS but also PZ-90. In this study, coordinate transformation parameters between ITRS and VN-2000 are estimated through the use of a least square approach and the common points with known coordinates in both systems. These set of parameters was then deployed to determine the link between VN-2000 and WGS84 as well as PZ-90. The results denoted that the derived transformation parameters, on the basis of the results at the checkpoints, could generated station positions with the accuracy at several cm level for transformation from VN-2000 to the new realizations of ITRS, WGS84 and PZ90 and reversely. These achievements reveals that the set of parameters is great significance for many applications related to positioning in Vietnam.
On the acceleration of land subsidence rate in Semarang City as detected from GPS surveys
Authors: Andreas Heri , Zainal Abidin Hasanuddin , Gumilar Irwan , Purnama Sidiq Teguh , Anggreni Sarsito Dina , Pradipta Dhota
Published: May 2019

Land subsidence is not a new phenomenon for Semarang the capital city of Central Java Province with recent population of about 1.5 million. Some report said the subsidence in Semarang probably is occurring for more than 100 years. Geodetic surveys such as GPS Surveys can detect land subsidence accurately. Land subsidence in Semarang exhibits spatial and temporal variations with the typical average rates of about 3 to 10 cm/year until recently it seem the acceleration existed in some region of the city. This acceleration will increase the risk of negative consequences from the land subsidence. This paper present and discuss the acceleration of land subsidence in Semarang as detected from GPS Surveys. The surveys have been conducted in 2008, 2009, 2010, 2012, 2016 and 2017. From 2008 to 2012 the subsidence generally follow linier rates while from 2012 to 2017 seem they are accelerating. The northern eastern region of Semarang along the coastal area still exhibits relatively higher rates of subsidence along with acceleration in rates compare to others region. Ground water exploitation is suspected to be the causes of that land subsidence phenomenon in Semarang city
Time Series of Land subsidence rate on Coastal Demak Using GNSS CORS UDIP and DINSAR
Authors: Yuwono B. D. , Subiyanto S. , Pratomo A. S. , Najib
Published: May 2019

Most of the studies land subsidence and impact have been done on the north coastal area of Java, especially Semarang and Demak. This landsubsidence has a very serious impact both in the infra structure, the economy and the environment. Techniques of observing landsubsidence using geodetic methods have been widely practiced. Geodetic technology is undergoing rapid development, especially in GNSS navigation satellite technology as well as satellite radar interferometry. Both have advantages and disadvantages of each. In this study will examine the application of DinSAR interferometric techniques and GNSS technology to predict the rate of land subsidence coastal of Demak regency. This paper also emphasize the role of GNSS and DinSAR application in deformation especially for landsubsidence monitoring.
Analysis of Total Electron Content (TEC) Near Real Time Using Dual Frequency GPS Data (Study Case: Surabaya)
Authors: Cahyadi Mokhamad Nur , Rahadyan Almas Nandityo , Muslim Buldan
Published: May 2019

Ionosphere is part of the atmospheric layer located between 50 to 1000 km above the earth's surface which consists of electrons that can influence the propagation of electromagnetic waves in the form of additional time in signal propagation, this depends on Total Electron Content (TEC) in the ionosphere and frequency GPS signal. In high positioning precision with GPS, the effect of the ionosphere must be estimated so that ionospheric correction can be determined to eliminate the influence of the ionosphere on GPS observation. Determination of ionospheric correction can be done by calculating the TEC value using dual frequency GPS data from reference stations or models. In making the TEC model, a polynomial function is used for certain hours. The processing results show that the maximum TEC value occurs at noon at 2:00 p.m. WIB for February 13, 2018 with a value of 35,510 TECU and the minimum TEC value occurs in the morning at 05.00 WIB for February 7, 2018 with a value of 2,138 TECU. The TEC model spatially shows the red color in the area of Surabaya and its surroundings for the highest TEC values during the day around 13.00 WIB to 16.00 WIB.
Rural Livelihood Resilience: An Assessment of Social, Economic, Environment, and Physical Dimensions
Authors: Rudiarto Iwan , Handayani Wiwandari , Wijaya Holi B. , Insani Tia D.
Published: May 2019

Rural coastal area in northern part of Sayung subdistrict isprone to tidal flood as effect of abrasion and sea level rise. This studylooks at the condition of five villages that suffer the most tidal flood thereand tries to measure the livelihood resilience of the people throughhousehold survey. Livelihood Resilience Index (LRI) and Resilience Radarare adapted to calculate the score and level of livelihood resilience. Fourdimensions (social dimension, economic dimension, environmentdimension, and physical-infrastructure dimension) are used to express thelivelihood resilience score of each study area. Sriwulan village has thehighest score among the study areas and it has medium level of livelihoodresilience while Timbulsloko village which has the lowest score becomesthe only study area with low level livelihood resilience. However, thisresult in score and level categorization are only an attempt to describe thespectrum of livelihood resilience instead of intending to provide a set ofclassification. It hopefully can help to identify what can be started first inthe work of building resilience of the people and community in tidal floodproneareas.
Pushover Analysis of Partially Strengthened Column Structures on an Existing Multi-story Building
Authors: Teguh Mochamad , Mahlisani Novia , Saleh Fadillawaty
Published: May 2019

A pushover analysis was conducted to evaluate structuralperformance of an extended building structure subjected to simulatedseismic loads. The Inna Garuda Hotel was selected as a building object ofthis research focusing on the extension building only. This 7-storyreinforced concrete building has been functioned as a hotel building in theYogyakarta City of Indonesia for over 30 years. Preliminary results of thisanalysis indicated that the performance level of this building wascategorized as an immediate occupancy (IO), however, the plastic hingeson the slim column structure components occurred. Given this condition, the structure of the building does not fulfill the concept of a strong columnweakbeam (SCWB). The research objective is to follow up on thepotential of building collapse due to the column structure weakness byconducting a research on the strengthening of slim column elements. Apushover analysis was carried out using ETABS software. A strengtheningtechnique was adopted by enlarging the dimensions of the slim columngradually. In this study, the slim column was enlarged up to 300/650 mm(KJ-P5 model). The pushover analysis results of the KJ-P5 model haveshown the drift ratio is less than 1.0% for the four directions of thepushover with the level of immediate occupancy performance (IO). Referring to the recent building condition, the strengthened slim columnsdo not seem significant damage to the structural components of thebuilding resulting in a fulfilling of SCWB concept, where a similarcondition on their strength and stiffness as before the earthquake occurs. The results of the plastic hinge locations, as well as the performance levelsof the indicated slim columns in resisting overall structures, are extensivelydiscussed in this paper.
Indonesian Architecture and Earthquake Vulnerability: the Development of Building Safety through the Civilization
Authors: Idham Noor Cholis
Published: May 2019

Please let the above author information blank for the firstsubission of this paper to maintain annonymity during double-blind reviewprocess. If your paper is accepted, you will be required to submit the final(camera ready) version in which a completed author information asexemplified above must be provided. You should leave 8 mm of spaceabove the abstract and 10 mm after the abstract. The heading Abstractshould be typed in bold 9-point Arial. The body of the abstract should betyped in normal 9-point Times in a single paragraph, immediatelyfollowing the heading. The text should be set to 1 line spacing. Theabstract should be centred across the page, indented 17 mm from the leftand right page margins and justified. It should not normally exceed 200words.
Architecture, Ecology and Economy: Synergy or Contradiction?
Authors: Hackel Marcus , Hackel Anne
Published: May 2019

Economy and ecology in architecture are seen by most ascontradictions. On the other hand traditional building concepts andvernacular architecture all over the world use local renewable materialsand building methods as well as designs based on optimizations, traditionsand culture and thus follow an economic and ecologic approach. Theenvironment is not a world outside the economy. Well considered ecologicapproaches and solutions for socio-ecological problems can triggerinnovation and economic success. As architects we have an increasingresponsibility towards sustainability. In this context the use of buildingcost optimization and life cycle cost optimization without compromisingquality will be part of the „Ecological Economy in Architecture”. The goalwill be to create consumer value on several levels. Ecologic architecturalprojects will create economic competitive advantage in conjunction withthe creation of unique selling points. The starting points will be the wellbalancedanalysis and management of economic efficiency, ecological, social and cultural aspects - considering all stakeholders and the wholelifecycle of buildings. Hence current ways of design, decision-making, communication and education must be questioned from all sides.
Architecture of Surau and Its Role in Minangkabau Society: the Case of Surau Lubuak Bauak Nagari Batipuah Baruah, West Sumatra
Authors: Lukito Yulia Nurliani , Iskandar Hakimullah Arif
Published: May 2019

Rumah gadangandsurauare two important vernacularbuildings of Minangkabau society and their architecture reflect the cultureof Minangkabau society and harmony with nature. As part of thematrilineal culture of Minangkabau, women own the house and youngboys have to live and learn insurauowned by the clans.Surauis the centerof the activities of the Minangkabau boys and functions not only as a placeof worship, but also as a place of Islamic and informal education. As partofmerantauculture in Minangkabau or leaving home for a certain amountof time to gain experience and make some fortune, activities insuraualsoprepare those boys to be independent. It is the aim of this paper is toanalyze sustainable cultural and architectural values of the Minangkabausurauand howsurauhas sustained to function as a place of worship and asa center of Islam teaching. Although the function ofsurauas the place foryoung boys’ activities and get education fade with the spread modernityand changes in Minangkabau society, the sustainability ofsuraumeans sustaining Minangkabau culture.
Public art in Taman Suropati as a medium in creating attractive and lively public space
Authors: Lukito Yulia Nurliani , Zahra Rima Aisha
Published: May 2019

The city authority increasingly has interested in culturalsustainability as an aspect of sustainable development and emphasize thedesign of public urban spaces that host cultural and social interactions. Inregard to create sustainability of public space, it is necessary to use bothphysical and aesthetic elements of the park and art in public realm can be apowerful tool to reach people and play an active role in forming andpresenting local identity of cities. In this paper, a research in TamanSuropati, Menteng, Jakarta, is conducted as a case study of how public artin the city park generates interaction between visitors. As a historicallandmark of the city, Taman Suropati has its own appeal to the people ofJakarta. The park has provided a good sample of how urban space isactivated through public art and community activities. By analyzing therelation between spatial elements and social activities in Taman Suropati, we can learn about the importance of public art to support communityinteraction and help to create an attractive and lively urban environment. Thus, this paper aims to investigate the role of public art as a tool forenhancing the quality of urban space and making creative, lively urbanopen spaces to promote a more sustainable urban living and maintain thepublic realm of cities as an interaction space.
Characteristics of dissolved organic matter in a water purification plant and distribution pipes
Authors: Yamada Toshiro , Rosadi Maulana Yusup , Hudori  , Suzuki Yukitaka , Ito Eri , Li Fusheng
Published: May 2019

Dissolved organic matter (DOM) needs to be characterized todetermine the ability of a water treatment unit to reduce organic matter andits relationship to the levels of chlorine required for disinfection. Weinvestigated water quality parameters, including DOM, in a waterpurification plant and distribution pipes located in central Japan. Thedissolved organic carbon (DOC) concentration decreased from 0.73 mg/Lin raw water to 0.50 mg/L in purified water by conventional treatmentprocesses. The DOC of purified water decreased slightly in the pipesdownstream of the plant. The three-dimensional excitation-emission matrixfluorescence spectra showed some specific peaks for humic-like substancesand protein-like substances in all water samples, and the compositions ofDOM in purified water were close to those in raw water. However, therewas a peak of protein-like substances in purified and returned water, whichwas not observed for raw water. The fluorescence intensities of humic-likesubstances in purified water decreased downstream of the plant, while thefluorescence intensities of protein-like substances increased in the pipes. The measured molecular weight distributions of DOM in water presentedsome specific peaks, and DOM with a smaller molecular weight was noteasily removed by water treatment processes. There were positiverelationships between decreases in the intensities of some peaks andresidual chlorine decay.
Spatial Change of Resettlement Area and Location Vulnerability
Authors: Astuti Winny , Rahayu Paramita , Rini Erma Fitria
Published: May 2019

This paper analyzes the Change of Livelihood ofResettlements Area in Mojosongo after being a destination area of aresettlement program. The program resettled 453 households devastatedfrom the flooding area of River Bank of Bengawan Solo. Many scholarsargue that the resettlement program commonly situate people into avulnerable situation, especially in the early stage of post resettlement. With regard to this common argument, spatial analysis was conducted todescribe spatial change of the resettlement area before implementation ofthe program (2006); in the middle of the implementation of programmes(2013) and in the current situation (2018). Interviews have been conductedto Head of Housing, human settlements and Land Government unit, andhead of the community. This results show that this resettlement programpartly creates a vulnerable situation. However, due to the commitment ofthe local government, and integrated program have been conducted alongthe resettlement process. This approach is able to accommodate thecommunity’s interests and government program. Such integration is ableto provide infrastructure and social services that in accordance tocommunity’s need and interests. Therefore, it is expected to reduce therisk of community to be exposed in a vulnerable situation after theresettlement program.
Fencing Kolong Area Relation with the Work Type
Authors: Idawarni  , Syarif Edward , Amin Samsuddin
Published: May 2019

Work was an important aspect of people’s lives, as well ashomes. Both were two things that cannot be separated in the life of fishingcommunities. The work that people currently do as seaweed farmers andfishermen involve family and community members. In work, it takes spacethat was roomy, shady, and comfortable. During this phenomenon in arural community is no exception in the coastal areas that use the model ofthe house stage will do the development of space into under the body of thehouse (kolong) with various types of materials and purposes, generally thepurpose of fencing was adapted to the material used. The development ofseaweed cultivation work that requires space that was roomy, shady, andcomfortable in the process (especially sorting of seaweed) this affects thefencing form of the kolong. The purpose of the study was to know how farthe fencing area undertaken by the community associated with the work. The method used was a mixed-use method. The result obtained is thedecreasing of the undercover area as a whole due to the increase of socialrequirement to the room which was roomy, shady, and cool to work.
Factors influencing the modal choice to access elementary school in supporting Surakarta as child friendly-city
Authors: Rini Erma Fitria , Putri Rufia Andisetyana , Mulyanto  , Musyawaroh  , Nugraheni Dara Sinta
Published: May 2019

Elementary school, as criteria of a friendly city, should beavailable inside a neighborhood unit (NU). There is only one out of 109NU in Surakarta City that does not have an elementary school. However,67% of the people of Surakarta choose elementary schools outside theirNU. They use various modes of transportation because their school is outof reach for walking. Nevertheless, there are people who do not walk eventhough they are in their NU. This study aims to determine the factors thatinfluence the modal choice in accessing schools in the city of Surakarta. This research used a quantitative research method with multinomiallogistic regression analysis to analyze 14 factors obtained from thetheoretical review. The result shows that there are six factors that influencethe modal choice to access elementary school, i.e. family member; carownership; householder occupation; time of trip made; road separator; andhouseholder age.
Green Configuration-Based GIS Spatial Model in Riparian Area of the River Kuin Banjarmasin, Indonesia
Authors: Annisa Nova , Prasetia Hafiizh , Riduan Rony
Published: May 2019

Green cover configuration plays an important role in urban development. Research has been carried out from an investigation at riparian area of The River Kuin, Banjarmasin, Indonesia. In the riparian area of The River Kuin consists of 65.87% build-up area (red zone), 25.12% streets (gray zone), and 9% of green open space (green zone). Based on calculations with the vegetation index, the green open space which amounts to 9% is able to store carbon reserves of 129.21 tons. In addition, the presence of green open spaces also contributes to the atmosphere of life in the riparian area.
The Behavior of Alternative Kacapuri Foundation on Alluvial Land of Central Borneo
Authors: Ma’ruf Muhammad Afief , Fitriati Ulfa , Ni’mah Lailan
Published: May 2019

One of the traditional substructure forms of Borneo is the kacapuri foundation. Previous research conducted a study on this kacapuri foundation by making an alternative kacapuri foundation model by combining a raft of gelam wood with reinforced concrete pillars. The study was originally applied to peat soil, but in reality, the kacapuri foundation was applied to alluvial soils around riverbanks rather than on peatlands. Therefore, this study looks at how the behavior of bearing capacity of the foundation when it is applied on alluvial soil. The location of the study where is located in the traditional Dayak Ngaju tribe in Mandomai village, Central Kalimantan. As a reference the application of the form of foundation using the model of Dayak house Huma Hai in the form of a house on stage with the main material of ironwood. The burden of each column of the house is 9,93 kN in the middle pole position. From the research, it is found that the ultimate bearing capacity is 298 kN /m2, with its own weight is 4,816 kN.
Stabilization of Soft Soil with Cement and Palm Kernel Shell Ash Admixture
Authors: Arifin Yulian Firmana , Rahman Gazali
Published: May 2019

This paper focuses the results of the improvement in shear strength parameters and CBR of soft clay when stabilized with cement and cement-Palm Kernel Shell Ash (PKSA). Different combinations of soil- cement and soil-cement-PKSA mixtures are prepared with the addition of cement and PKSA in the range of 2-10% by weight of soil. Series of tests including compaction, UCT, and CBR tests were performed. The influence of curing time is also studied on CBR and undrained strength property of various sample combinations. Results indicate that the addition of PKSA to the soil-cement mixtures increases the CBR. The percentage of optimum PKSA content in the mix for soil with 10% cement is 2%. The effect of time on clay, cement, and PKSA mixture is significant, i.e. an average of 0.5% per day.
Floating Wetlands System: A viable alternative for water pollutants remediation
Authors: Pradhanang Soni M. , Boving Thomas , Meisinger Ehren
Published: May 2019

Constructed floating wetlands is viable alternative for the treatment of stormwater, combined stormwater-sewer overflow, sewage and water supply reservoirs, among others. The use of this technology also allows to enhance the habitat, and improve aesthetics to the treatment facility. In brief, the constructed floating wetlands island treatment mechanism is a combination of several components and physico-chemical processes that mimic natural bioremediation. Plant roots play a major role in treatment processes within constructed floating wetland island since the water passes directly through root system underneath the floating mat. Pathways for contaminant removal/retention in floating wetland island are: release of extracellular enzymes, development of biofilms, flocculation of suspended matter, and plant uptake. This study summarizes the findings of four monitoring studies and emphasizes on the field studies that monitored how pond contaminants responded to the floating wetlands through extensive review of existing literature.
Performance of Floating wetland to reduce the organic matter in river water
Authors: Prihatini Nopi Stiyati , Mizwar Andy , Riduan Rony , Irawan Chairul , Arifin Yulian Firmana
Published: May 2019

Floating wetlands are innovative systems that rarely used in South Kalimantan Indonesia so their performance using local species of plant are still scarcely known. To gain initial information on their performance and potential in removing pollutants, especially organic content, an experiment have been conducted in laboratory scale. This study used local plants (Echinodorus palaefolius and Limnocharis flava) with a plant height of approximately ±30 cm and ±15 cm, grown with a distance of 15 cm x 15 cm, which was floated into a plastic-coated plywood reactor with a size of 80 cm x 40 cm x 40 cm. Water samples are taken from Kerukan River (Banjarmasin, South Kalimantan Indonesia) which is flowed continuously to the reactor with a flow rate of 0.002 L/s. After 30 days, floating wetland planted with E. palaefolius can reduce organic material (BOD, COD) by 82.19%; 77.22% and floating wetland planted with L. flava can reduce BOD and COD respectively by 78.83% and 72.75%. This show that floating wetland very potential to use as an organic pollutant removal from river water.
Management of Municipal Solid Waste in Religious Tourism Park Based on Reduce, Reuse and Recovery: An Indonesian Attraction Case Study
Authors: Kasam  , Iresha Fajri Mulya , Setyoadi Nino Heri
Published: May 2019

Solid waste management is a very important part to be done including in the religious tourism park because cleanliness reflect purity. This study aims to plan solid waste management system in the religious tourism park in Indonesia, especially in Gunungpring park tomb. Solid waste management planning is determined by sampling and measuring for eight consecutive days. The solid waste management system is planned to cover storage, collection and transportation as well as processing solid waste facilities named TPS 3 R and transportation of the residue. Based on the sampling result and the measurement of solid waste generation, it is known that the average amount of solid waste is about 0.14 kg or 0.3 liter per person per day. While the composition consists of 49.84%, 29.53% and 20.63% respectively for recyclable, compostable and disposable waste. Storage at Gunungpring Religious Tourism Park need to be installed in five locations with three types of containers, while collection used motorcycle cart with capacity of 84 liters. In order to obtain optimum results, a planning and designing the TPS 3 R installation is necessary and finally the disposable waste transportation was design to obtain the method and intensity of disposal and size of dump truck.
Evaluation of Waste Management in Piyungan Landfill, Bantul Regency, Yogyakarta, Indonesia
Authors: Ariyani Safira Firda , Putra Hijrah Purnama , Kasam  , Damanhuri Enri , Sembiring Emenda
Published: May 2019

The municipal solid waste management system collects waste from the source to the final treatment site called landfill. The Yogyakarta Special Province has several landfills, one of which is Piyungan landfill, which serves three administrative areas, Yogyakarta City, Sleman and Bantul Regency. As a regional landfill, Piyungan has an area of 12.5 ha with 3 working zones, operationalized since 1995, estimated with the operational time 20 years. So that 2015 should landfill have been closed, but due to the degradation of waste until 2018 landfill is still used. Therefore, an evaluation mechanism is needed to show the existing condition in the field. Using the checklist method, using questionnaires and interviews and utilizing other secondary data. This method consists of five parts and has an assessment criteria in each component obtained assessment of facilities and infrastructure facilities of 2.25 (good category), while 1.68 for operational technical aspects (very good category). Overall Piyungan landfill evaluation scored 1.96 (good category). However, efforts are needed to ensure that the various facilities can be used properly so that the implementation and sustainability can work well.