bluuebunny/crossref_metadata_2025 huggingface dataset:
Daylight optimization in a hypothetical classroom using single-objective optimization methods: Case study in Lhokseumawe, Indonesia
Authors: Effendy Ethan Josiah , Hakim Fahmi Nur , Atthaillah  , Mangkuto Rizki A. , Koerniawan Mochamad Donny , Ramadhani Dhafira
Published: May 2023

This study evaluates and optimizes daylighting performance in a hypothetical classroom located in Lhokseumawe, Indonesia. The classroom daylighting performance is represented by the metrics aUDI250-750lx, sDA300/50%, and ASE1000,250. Under the baseline conditions, poor daylighting performance was revealed as indicated by a low aUDI250-750lx value and a high ASE1000,250h value. To obtain good daylighting performance, this study utilized a computational simulation method using Rhinoceros, Grasshopper, and Honeybee Plus platforms. Optimization is conducted using Opossum with the RBFOpt algorithm. The optimization result suggests the building envelope design parameters and external shading device design which results in a better natural lighting performance as indicated by the increase of aUDI250-750lx value at about 45%, the sDA300/50% value remaining at around 94%, and the ASE1000,250h value has decreased by 14% compared to the baseline condition of the classroom.
Socio-Ecological Adaptation Of The Kaili Rai Community Settlement In Taripa Village, Sindue District
Authors: Timbang Gator , Malik Sutrati Melissa , Salhudin  , Fernanda
Published: May 2023

The multi-dimensional natural disaster that hit Sigi and Donggala districts, Palu city, on 28 September 2018, had an impact on various aspects, including the arrangement of the community settlement. The Kaili Rai ethnic settlement that was built and has grown naturally in Taripa Village, Sindue District, Donggala Regency was unavoidable from the impact of the natural disaster which prompted them to flee from their settlement to a relatively flat place in the coastal area of Sindue District. The objective of this study is to reveal the form of adaptation of the community as settlers at the foot of Mount Sidole, Taripa Village, from a sociocultural perspective and local environmental aspects, which has implications for the sustainability of the way and system of living in new locations without significant changes compared to the situation before the disaster hit them. Research on the existence and sustainability of the Kaili Rai living system was conducted with a qualitative approach to reveal sociocultural factors, combined with a quantitative approach in order to explore and reveal environmental aspects.The findings indicate that the way and system of living of the Kaili Ethnic in Taripa Village, Sindue District is very adaptive. Such adaptation is strongly influenced by cultural and social factors with positive implications for sustainable settlements.
Lalombi Tropical Peat Soil Improvement Using Iron Oxide admixture and Cement
Authors: Nurdin Sukiman , Arifin B. , Fadillah I , Syahriar M R
Published: May 2023

Peat soil has a relatively high water content of up to 400%. With a high moisture content, peat soil can hinder construction work. For this reason, in construction planning, an investigation must be carried out on the characteristics and strength of the soil, especially the properties of the soil that affect the bearing capacity of the soil to withstand the load of the construction on it. This study aimed to determine the characteristics and changes in the bearing capacity of peat soil after mixing with cement and iron oxide admixture. The variation of mixing iron oxide is 0%, 4%, 8%, and 16%, while for variation of cement mixture is 5%. This research was conducted on the soil, including testing physical and mechanical properties. Engineering properties tests include direct shear and consolidation tests. This research conducted the elemental chemical content in peat soil and SEM (Scanning Electron Microscope) test. Based on the classification of peat soil at this location with an ash content-value of 29.41%, it can be classified as High Ash Peat (peat with ash content > 25%). In the direct shear test, the cohesion value and the shear angle continued to increase as the percentage of the iron oxide mixture increased to 16%, where the shear angle changed from 7.60º to 45°. In the consolidation test, the original soil Cc value of 0.00820 decreased with the addition of iron oxide to 16%; the Cc value decreased to 0.00277. The decrease in Cc indicates that the soil becomes easily compacted, and The value of the Coefficient of Consolidation (Cv) on peat soil was 0.00535 cm²/sec. The most significant increase in the original soil with a mixture of 16% iron oxide was 0.01463 cm²/sec. The Chemical results have been given a mixture of 16% iron oxide and 5% cement, the change of C (Carbon), Fe (Ferrum) and Ca (Calcium). The value of O (Oxygen) in peat soil was 48.05% and then decreased to 43.67%, this indicates that the pores in the peat soil are reduced, and when the pores are reduced, the peat soil becomes denser. The value of Si (Silica) also decreased from 30.01% to 21.21%. This occurred because silica reacted with lime. After all, silica is an adhesive that binds lime, making the granules denser. Peat soil’s Fe (Ferrum) value was 3.12%, then increased to 16.72%. This also helped the soil to become stronger because of the higher specific gravity of iron. Peat soil’s Al (aluminium) value was 12.15% after being given a mixture of iron oxide and cement increased to 12.16%.
Investigation of traffic accident-prone roads in Palu City
Authors: Ramlan Ratnasari , Humairah Chikita , Lestari Sari Puji , Sutrisno Mohamad
Published: May 2023

This study was conducted to investigate accident-prone roads in Palu City. The method used is direct observation on the road which shows the frequent occurrence of traffic accidents based on traffic accident data obtained from the Municipal Police Offices (Polres). Based on the results of the study showed that 19 roads often occur traffic accidents. R.E Martadinata Sub Districts Tondo (25.07%), Trans Sulawesi Sub Districts Taipa (11.21%), and Trans Sulawesi Sub Districts Mamboro (7.08%) are the most accident-prone roads in Palu City. These three roads are included in the national road network as the primary arterial roads of Palu City. The final result of this study shows that accident-prone roads can be caused by poor pavement road conditions, high side frictions, and poor environmental conditions and visibility.
The Relationship of Office Building Maintenance with The Comfortable Environment of The Users in Palu City
Authors: Muktar Tutang , Nirmalawati  , Asnudin A , Nyoman I
Published: May 2023

Building maintenance is one of that is needed in keeping the urban environment clean and convenient. The initial review found that some office buildings yet do not bring comfort to the facility users, there are still many managers who ignore building maintenance and consider it not the most important thing. This type of descriptive research by distributing questionnaires to users who work in the agency under study and understand the meaning of building maintenance as many as 60 respondents. Data analysis using multiple linear regression method. The results simultaneously show the variable of architectural maintenance, structural maintenance, environmental maintenance, housekeeping, and mechanical & electrical variables have a significant effect on the comfort of the work environment (Y), with the regression equation Y= 2.029 + 0,255 X1 -1,28 X2+ 0.367X3+ 0.140 X4- 0,029 X5. The results of the study can provide input to further improve the maintenance of office buildings to create a comfortable working environment.
Development of Smart Air Purifier for Reducing Indoor Particulate Matter
Authors: Rachmawati L.M. , Hasmul N. A. , Chandra I. , Salam R. A.
Published: May 2023

Indoor air quality is crucial to observe because most people spend 90% of their time in the room. Indoor air quality is influenced by various parameters, especially PM
2,5, from a mixture of air outside and inside the room itself. If the occupants are exposed to this parameter continuously, it will affect the occupant’s health significantly. Hence, it is necessary to control indoor air quality if this parameter exceeds the specified quality standards. One technology to reduce PM
2,5 is an air purifier. Air purifiers are generally composed of an exhaust fan, HEPA filter, and pre-filter. One of the air purifiers’ evolution is the smart-air-purifier. Smart-air-purifier can automatically adjust the speeds of the fan so as can minimizes electricity costs. The designed smart system can classify PM
2,5 concentration based on fuzzy logic to flow rate settings using pulse width modulation (PWM). In addition, to analyze the performance of the smart air purifier, we test it in a chamber. The test results show the performance of the smart air purifier in reducing PM
2,5, the clean air delivery rate measurement of the smart air purifier, and its power consumption which can minimize 67.42% of electricity use than commercial air purifiers.
Evaluation of Projectile Penetration Position on Perforated Plate on Ballistic Resistance of Composite Sandwich Panels
Authors: Fadly M S , Bakri B , Anwar K , Chandrabakty S , Mustafa  , Naharuddin  , Fauzan
Published: May 2023

This paper evaluates the performance of perforated plates in composite sandwich panel under high-velocity impact. The ballistic resistance of composite sandwich panels made of steel plate on the outer layer and the rubber on the middle layer was evaluated using experimental and numerical methods. The front plate is modified with 3 mm diameter of holes, and the distance between the holes is 10 mm. Experimental testing was carried out by firing a 9 mm full metal jacket projectile at a distance of 5 m and an angle of attack of 90° on the target. Experimental results and numerical simulations show that the position of the projectile penetration at the side of the hole in the composite panel stops the projectile velocity faster at 1.1619 x 10−4 s with a maximum energy absorption of 532.9 J than at center of hole and middle of four holes. The failure of the side of the hole penetration position is the asymmetrical deformation of the back plate due to changes in the penetration position of the projectile with the initial trajectory, fractural projectile core and brass jacket projectile erosion. The projectile penetrates the front plate due to plastic deformation, and rubber in the middle layer is pushed and perforated in the projectile direction, causing the back plate to form a bulge.
Parallel Induction Analysis for Reduction of Interference Due to Lighting Strikes At 70 kV SUTT Parakan-Kadipaten
Authors: Siswanto A , Ningrum K N I K , Baehaqi M , Arifudin  , Soleh M , Abdullah M L , Ikawati V
Published: May 2023

SUTT 70 kV Parakan-Kadipaten is one of the transmission networks located in areas with high lightning activity so that there is the potential for interference. If the voltage (V) caused by lightning > Basic Insulation Level (BIL) insulator, a backflash over will occur. One of the efforts made to minimize interference is by paralleling the tower inductance with NA2XSY cable which has a lower inductance than the tower. This study aims to determine the installation method and the effect of parallel installation of inductance to reduce interference due to lightning strikes. The research was carried out by performing calculations to determine the lightning Vimpuls before and after the parallel inductance and then comparing it with the BIL value of the insulator and network disturbance data. If the lightning Vimpuls > BIL insulator then a backflash over occurs and if the lightning Vimpuls < BIL insulator then there is no backflash over. From the calculation results, it is found that the value of lightning Vimpuls before parallel inductance > BIL insulator and after parallel inductance drops significantly to < BIL insulator. Meanwhile, when compared with the fault data 3 years before and 3 years after parallel, the fault inductance also decreased. In the year before the parallel inductance, namely 2015 there were 4 disturbances, in 2016 4 disturbances, in 2017 1 disturbance, and in 2018 the January-June period there were no disturbances. In the year after the parallel inductance installation, namely in 2018 for the July-December period there were no disturbances, in 2019 there were no disturbances, in 2020 there were 2 disturbances, and in 2021 the period (January-June) had 2 disturbances.
Identification of Herbal Plants Using Morphology Method and K-Nearest Neighbour Algorithm (KNN)
Authors: Wirdayanti  , Dwiwijaya K A , Suriani  , Rochmawati D R , Putri F S
Published: May 2023

The large number of herbal plants and the lack of public knowledge about the types of herbal medicines make it difficult for people to distinguish the types of herbal medicinal plants. So, to provide information for public, an identification system that could identify and recognize a herbal medicinal plant is needed. Leaves identificiation is based on the Morphological method with K-Nearest Neighbor algorithm. Leafs data that will be used in this study is Basil Leaves, Orthosiphon leaves, Painted Nettle leaves, Betel leaves, and Teak leaves which are categorized as flowering plants from the Lamiaceae or Labiatae family for the classification process. Image processing techniques will be used to obtain the pattern of the shape and characteristics of each leaf which is known as the recognition of leaf morphological features. This study using 200 leaves data and separated into 2 types, with 70% basic data and 30% test data. With Morphological Feature Extraction using area and parameters as well the compactness and metric features of the leaves. The accuracy of the classification results using the confusion matrix testing method with K3 values obtained by 80%, K5 and K7 values obtained accuracy of 76.67% and K9 values showing accuracy of 78, 67%.
Determining the Location of Public Green Open Space in Kota Palu Using Analytical Hierarchy Process with Map Overlay (AHP-MOV)
Authors: Bakri Muhammad , Kasim Anita Ahmad , Achsan Andi Chairul , Maddiu Muhammad Assy’ary Gunarif Dg.
Published: May 2023

Green Open Spaces (GOS) are an important component of the environment and, as a major spatial plan and area, play an important role in the sustainability of urban communities. The green area within the zone is 30% of the total area of the zone, according to Spatial Planning Act No 26/2007. Similarly, in the Spatial Planning Act, his PU number 05/PRT/M/2008 describes guidelines for the provision and use of open spaces in urban areas. Public and private green spaces are included in open spaces. At least 30% of urban green space is public green space, with the remaining 10% being private green space. The purpose of this research is to identify potential locations for public green spaces in Kota Palu. The survey methods used are descriptive and quantitative, with the location of required green space determined using hierarchical process analysis (AHP) and overlay analysis (weighted overlay). The Analytical Hierarchy Process (AHP) results show that variables are followed by hazard probability in order of priority, then slope, population density, land use, and accessibility. According to the findings, the number of percentages generated by hierarchical process (AHP) analysis and weighted overlay analysis is 34.61%.
The Numerical Study of The Need for Transverse Reinforcement of a Spun Pile
Authors: Orientilize M , Prakoso W A , Lase Y , Dessy N W , Willie S
Published: May 2023

A numerical study based on FEA was conducted to seek the optimal need for transverse reinforcement of a spun pile with 400mm-diameter and 75mm of wall thickness. Two equations from ACI 318-19 and ASCE 7-16 were compared. The parametric study was limited to a spun pile with 450mm diameter and 75mm of wall thickness. The amount of transverse reinforcement was presented as the ratio to the ACI requirement. The ratio was varied and its effect on strength and ductility was observed. Three different axial load ratios, 0.1, 0.2 and 0.3 Fc’Ag, that are usually applied on the foundation were considered. The needs for spun pile with and without concrete infill are different since it is a function of the ratio of gross area (Ag) to the confined area (Ach) of concrete. An empty spun pile require a higher amount than the filled pile. The axial load ratio is another factors that affect the need for that reinforcement. However, ACI does not recognize it. The study found that the amount of transverse reinforcement required by ACI and ASCE can be reduced to get an economical amount without significantly reducing the strength and the ductility of the spun pile.
Structural assessment of the stalled building in Department of Industrial Engineering, Andalas University, Indonesia
Authors: Fauzan  , Aulia M W , Nugraha M D A , Jauhari Z A
Published: May 2023

The construction of the Industrial Engineering Department building is an effort to support the educational infrastructure at Andalas University. However, the building construction process was stopped because the contractor had terminated the contract (breach of contract) and it took a long time to continue the construction. Before that, a structural evaluation of the building structure should be conducted due to the update of the building standards. In this study, the structural evaluation was carried out by analyzing and modelling the building using ETABS v.18 software, as well as loading analysis on the building regarding current Indonesian building standards such as SNI 1726-2019 for earthquake resistance building design, SNI 2847-2019 for requirements of the structural concrete building and SNI 1727-2020 for building minimum design loads. The results of the analysis show that several structural beams did not have a strong enough capacity to withstand the working loads, where the ultimate moment and shear values due to the influence of acting loads were more than the nominal moments and shear values. Retrofitting of the weak structural beams using the CFRP wrapping method was recommended to improve the structural capacity of the building.
Index active tectonic relative of Karangsambung geopark area, Central Java, Indonesia: assessment for developing geological disaster-based areas
Authors: Hidayat E , Muslim D , Zakaria Z , Permana H , Wibowo D A
Published: May 2023

Karangsambung as a “subduction fossil” of the Cretaceous-Paleocene on the island of Java, has a complex geological structure. The current subduction process in the south of Java with a north-south compression force has contributed to the reactivation of the geological structure in Karangsambung. The index active tectonic relative (IAT) of the Karangsambung area reflects the current level of tectonic activity. IAT is obtained from quantitative calculations of geomorphic indices, including streams length - gradients index (Sl), the ratio of valley floor width to valley height (Vf), basin asymmetry (Af), basin shape (Bs). mountain front sinuosity (Smf), the hypsometric integral (HI), and drainage density (Dd). The index active tectonic relative (IAT) calculation with an average IAT value of 2.37 indicates that tectonic activity is in the medium/moderate category. In addition, an attempt was made to compare the regional neotectonic activity with the relative tectonic activity of the study area. Based on this geomorphic analysis, the study area may have a lower seismic risk but needs to be evaluated more carefully for regional seismic hazards. The IAT value can be used as an initial reference for geological disaster assessment, especially earthquakes hazard in the development of the Karangsambung National Geopark Area.
Prediction of shelter needs based on simulation results of evacuees choosing evacuation facilities due to a potential tsunami earthquake in Padang, Indonesia
Authors: Purnawan  , Kharisma E
Published: May 2023

Tsunami disasters are predicted to occur in the West Sumatra region due to earthquakes. To deal with the tsunami hazard that will hit Padang City, the government has built several shelters and evacuation routes. At present, the number of evacuation facilities is still limited, this will cause community vulnerability in facing tsunami hazards. To overcome this vulnerable condition, it is necessary to determine the number of shelters needed to accommodate evacuees. In this study, the determination of the required number of shelters is done by simulating the number of evacuees who choose shelters during evacuation. The model of evacuee generation from 5 tsunami-prone zones in Padang City was created using a linear regression method. The model for selecting the type of evacuation facility in each zone uses a binary logit model. Prediction of shelter needs is carried out for minimum, normal and maximum conditions that may occur. From the simulation results, the number of evacuees who choose the shelter as a means of evacuation is obtained. The number of shelters needed in Padang City is a minimum of 6 units, normal 23 units and maximum 50 units.
The influence of helix diameter configuration on helical pile bearing capacity
Authors: Amalia G , Iqbal M M , Dewi R
Published: May 2023

Helical pile is an invention of pile foundation that has many advantages. Helical pile produced bearing capacity greater than other pile foundations. It because The Bearing capacity of helical pile is contributed by end bearing capacity (Qb), shaft friction bearing capacity (Qs) and bearing capacity of helix or cylindrical (Qcyc) along pile. On of the Several factors that influence bearing capacity of helical pile was the configuration of helix diameter arrangement. This research was a laboratory experiment using a box, sand as the medium and a miniature of steel pile. The diameter pile test was 1,5 cm and length was 63 cm. Each pile has three helix along the pile with a configuration of diameter from top to bottom was 10 cm – 8 cm – 6 cm and from top to bottom 6 cm – 8 cm – 10 cm. The kind of Loading test was used in this research was Quick Maintain Load (QML). From the research, It was found that the variation wich gave the most significant influence in remained the greatest bearing capacity was the pile with diameter configuration of helix from top to bottom 6 cm – 8 cm – 10 cm or pile D6810.
Clayshale stabilization using active natural lime to increase the shear strength of soil
Authors: Hasan M F R , Utama I Z , Razzak A F A , Salimah A , Agung P A M
Published: May 2023

Clayshale not used in construction because it is easily weathered when exposed to air and water to reduce the soil shear strength. As a result, this decline can cause geotechnical engineering problems, and clayshale needs stabilization. This study aims to determine the shear strength of clayshale by adding variations of 5%, 8%, and 11% lime. Tests carried out to obtain soil parameters include soil index and engineering properties. Based on laboratory tests, the original clayshale soil has a 33.2% liquid limit, a 6,1% plasticity limit, and a 27,1% plasticity index. Hence, clayshale soils belong to the CL(clay-low plasticity) category based on the USCS. Adding lime variations can increase the specific gravity and the optimum moisture content of the clayshale soils. Still, it can reduce the dry unit weight and the plasticity index value on clayshale soils. The triaxial test on the original clayshale soil sample obtained a cohesion(c) value of 0.20kg/cm2 and friction angle(f) of 6.38°. In contrast, the values of c and f occurred the highest increase from the original clayshale soil with the addition of 8% lime, so lime can be used as an alternative in soil stabilization because it can increase the shear strength of the soil.
Liquefaction potential analysis for Palu City based on CPT method
Authors: Tohari A , Soebowo E , Wibawa S , Hermawan K , Saputra O F
Published: May 2023

During the 28 September 2018 Palu-Donggala earthquake, liquefaction was also a prominent hazard causing significant damage to buildings and infrastructures in Palu City. To mitigate such a hazard in Palu City, knowledge of the depth of the liquified soil layer is necessary. This paper presents the results of CPT-based liquefaction potential analysis in some locations around the city where sand boiling and ground settlement occurred. The analysis shows that liquefaction occurs at various depths less than 15 m and may induce ground settlement up a few centimeters. In the Palu-Koro Fault zone, the liquified sand layer is likely thicker than in other locations. Consequently, the total ground settlement is higher than in other locations The results of this study suggest that the liquefaction potential should be accounted for in the development of Palu City to reduce future earthquake risk.
Application of X-Band rainfall radar data-based on soil water index for sediment Disaster monitoring in Boyong River (BO-D6)
Authors: Syarifudin A
Published: May 2023

Disasters those related to rainfall, will always come unexpectedly which can make huge potential of risk to human and facilities. Rainfall contribute a benefit and disaster to us, so we have to provide some research about the relationsip of rainfall and disaster. This research produce the information related to application of x-band radar data which have combination from soil water index. It shows the calculation of water content in soil layer by using x-band radar data. The rainfall dataset is extracted from June 2019 until June 2020. SWI can be used as preliminary information and works as a database for monitoring and observation tools for Boyong drainage area. The record of occurence sediment movement on 20thOctober 2019 proves in that day, the condition of soil water index reach maximum values with 80,28 mm and there is a small occurence of sediment movement around that month. The subsequent conctancy of SWI needs to be paid attention for possibility of disaster. As rainfall intensity reach the highest values, soil water index will also increase. A higher value of SWI show a higher risk of sediment disaster initiation.
Activating an Adequate Management & Effective Emergency Unit for The Water Supply in The Armed Conflicts Zones
Authors: Alnajar T M , Fitri A , Almadhoun W , Hadie M S N , Ros F C , Kabeel A E , Shah S Z H
Published: May 2023

This study examined Gaza Strip water management after Israeli raids. This research is directly relevant to the Gaza Strip’s water emergency plan. Taking immediate action helps prepare for shocks before, during, or after an emergency. This project aims to establish an updated emergency strategy for water sector emergencies. Considering Israel’s Gaza raid This study is important because it addresses a vital issue that saves lives and sustains a vital industry (the water sector). In addition to other factors that support the management process, the study offers a basic method for controlling water supplies in an emergency (the Israeli aggression on the Gaza Strip). This solution is titled (decentralized supplies). This report updates a plan for managing Gaza’s water supply during Israeli invasion. The report will enable decision-makers direct international organizations to improve and develop Gaza’s water condition using scientific approach. The findings will benefit water experts and emergency managers.
Analysis of drainage network capacity in Rawa Jaya Area, Ilir Timur I, Palembang
Authors: Nisumanti S , Baniva R , Afrizal
Published: May 2023

Palembang is a lowland which is dominated by swamp areas.. The problem of flooding in this area stems from a drainage network system that is almost cut off, causing high rainfall and water not flowing properly into the river. This study aims to analyze the drainage network system’s performance based on the channel’s capacity to the channel’s condition in analyzing the hydrology using the probability distribution method. The frequency suitability test was carried out using Smirnov-Kolmogorov and Chi-Square. The results showed that the rainfall was 116.74 mm/hour and the design flood discharge (Qr) at the ten-year return period was 3.684 m3/second. The carrying capacity of the discharge channel (Qs) is smaller than the value of Qr. Indicates that the existing drainage channels cannot accommodate the flood discharge, resulting in flooding. The channel at point 4 leads to the discharge channel; the capacity value of Qs is 4.0296 m3/second, while Qr is 3.684 m3/second. The calculation results can be estimated that the channel discharge capacity is smaller than the planned flood discharge, so the drainage channel capacity cannot accommodate flood flows.
Public Preferences of Using Public Transport During the Covid-19 Pandemic and the Implementation of Level 3 Community Activity Restrictions Policy in Padang City
Authors: Yosritzal  , Kurniati Titi , Meiriza Putri Jihan
Published: May 2023

The Covid-19 pandemic has had a significant influence on the usage of public transport, in this case, a decrease in the use of public transport services. The decreased use of public transport was because the government created a new social system called social distance, followed by the Enforcement of Restrictions on Community Activities (PPKM). This study aims to perform utility and probability modelling and determine the most significant factor in influencing the preferences of the community in using public transport during the Covid-19 pandemic and the implementation of the PPKM level 3 policy in Padang City. Primary data was collected using online and offline questionnaires. The questionnaire used the expressed preference technique on eight alternatives with three attributes and two levels. The attributes include the difference in travel time, the cost of travel, and health protocols. The best model was Y(AUK-AUO) = 0.656 + (- 0.038) X1 + (- 0.056) X2 + 0.644 X3 with R-Square = 0.174 referring to all characteristics as a whole influence 17.4% of Y. According to the sensitivity test results, the travel cost difference is the most influencing variable in people’s decisions to use traditional public transportation during the covid-19 pandemic and the implementation of the PPKM level 3 policy.
Accessibility Towards West Sumatra Tourism Area
Authors: Melasari Jihan , Purnawan  , Yosritzal  , Yossyafra
Published: May 2023

Accessibility was identified as the main factor driving tourist travel. The transportation sector is one of the strategic elements in tourism. Transportation in tourism is a means to achieve tourist destinations and also a means of movement in tourist destinations. Transportation is one of the important indicators in the development of tourist destinations and the selection of destinations by tourists. West Sumatra Province is one of the provinces in Indonesia which is rich in tourist attractions and is also one of the tourist destinations that is quite taken into account not only at the national level but also at the international level. West Sumatra has been designated as one of the main national tourist destinations. This research identifies accessibility to existing tourist areas in West Sumatra and analyzes areas that have the highest and lowest accessibility and explains the existing condition of the availability of public transportation to provide services in terms of providing good accessibility to the tourist zone. This research uses a quantitative approach method to present numerical data through the normal distribution method to make each accessibility parameter into three classifications namely low, medium, and high, and also uses a qualitative approach that aims to investigate, describe and explain the existing conditions of transportation facilities to tourist zone which is the object of research using primary data. Through a qualitative approach, a detailed description of the condition of the availability of routes and public transportation will be produced which will be analyzed based on the results of mapping in the study area.
Development of Traffic Delay and Queue Metamodel on Landslide Zone Based on Simulation Using VISSIM
Authors: Purnawan  , Alfathira Ridhola
Published: May 2023

Landslides occur due to instability in the soil triggered by vibrations, high rainfall and topographical conditions of an area. Landslide is a natural disaster that often occurs in West Sumatra. This landslide certainly has an impact on traffic around the area. Congestion is the impact caused by landslides due to falling chunks of material onto the road. Lack of traffic control during landslides makes travel ineffective and inefficient. Therefore, the traffic control and its impact on possible landslides were tested using a VISSIM microscopic simulation software by setting the queue and delay parameters as the outputs. Based on this output of simulations, the metamodel was developed using regression analysis. This model could be used to predict the queue and delay of traffic because of landslide at road network. Two traffic control conditions that were simulated, open and close lane is used if the width of the landslides covering the road is more than one lane. Two-way traffic control in landslide zone is used when the width of the landslides covering the road is less than one lane.
Land use and land cover change analysis of flood prone area using remote sensing data and machine learning in Malang Raya, East Java, Indonesia
Authors: Hariyono M I , Ramdani D , Silalahi F E S , Kurniawan A A , Indriasari N , Buswari M
Published: May 2023

A natural disaster is one type of disaster that requires holistic handling. One of the natural disasters that often occurs is flooding. A flood is overflowing a large amount of water beyond its normal confines. Floods often cause an increased vulnerability of fatalities, so disaster mitigation efforts are needed. To reduce flood risk, this study uses remote sensing data to analyze changes in land use and land cover. The research location is Malang Raya, one of the locations prone to flooding in East Java. The method analyzes the results of processing satellite image data with the machine learning tools available at Google Earth Engine (GEE). This method provides convenience in accelerating the object classification in satellite image data. The study results indicate that using satellite image data analysis and machine learning processes is beneficial in accelerating object classification and approaching the actual conditions, making it easier to make a policy in handling disaster risk reduction.
Development of post-disaster rehabilitation and reconstruction information system
Authors: Sundara T A , Usada E , Saputra H , Arief L , Hamidi M
Published: May 2023

Information is a crucial aspect in disaster management. A reliable information systems play an important role in every stages of disaster activities: pre-disaster, disaster response, and post-disaster. This study aims to develop a post-disaster information system related to rehabilitation and reconstruction activities. Development of the system adopt System Development Life Cycle (SDLC) methodology: requirement, analysis, design, and implementation. This rehabilitation and reconstruction information system was developed for a web platform using various web technologies, such as Apache web service, MySQL database, Yii framework, JQuery, OpenMaps, among others. The information system has been successfully developed according to user requirements. It has been tested and implemented in post-disaster rehabilitation and reconstruction activities in Ministry of General Working and Public Housing.
The Role of the Government of Riau Provincial in Dealing with Forest and Land Fires
Authors: Sengdara Ketsana , Sukendro Achmed , Heridadi
Published: May 2023

Riau is one of the provinces with a higher risk of forest and land fires in Indonesia. In this study, the researchers wanted to understand the role of the Government of Riau provincial in responding to the problems. The methodology used in this study was a descriptive qualitative research method using data collection techniques in the form of primary data from interviews and FGD as well as secondary data from previous studies and documents supporting this study. The findings of this study are the role of the Government of Riau provincial in reducing forest and land fires in Riau. This’s reflected in a 90% reduction in burned area from 2016 to 2021. Not only does the Riau government work alone, but multiple parties are supporting the Riau government, namely the Indonesian Armed Forces, the Republic of Indonesia Police, the National Research and Innovation Agency, as well as other agencies that help reduce the risk of forest and land fires disasters in Riau.
Potential debris flow after earthquake in Mount Talamau Pasaman district and West Pasaman district
Authors: Bari F , Istijono B , Yuhendra R , Hakam A , Noer M , Ophiyandri T
Published: May 2023

The 6.1 Richter Scale earthquake on February 25, 2022 in Pasaman district and West Pasaman district caused landslides around Mount Talamau with an avalanche outcrop of 1,200 hectares, resulting in debris flow in a number of tributaries in rivers of Bt. Nango, Bt. Lampang, Bt. Timbo Abu, Bt. Tobi, Bt. Sopan, Bt. Muaro Tayo in Talamau subdistrict, West Pasaman district and the rivers of Bt. Haluan, Bt. Tampa, Bt, Malampah, Bt. Kilangan in Malampah subdistrict, Pasaman district. The potential for debris flow can still occur when the rainfall intensity exceeds 50 mm/day with a discharge of 107 m3/sec and a debris volume of 5,000,000 m3 in one of 10 tributaries around Mount Talamau. The estimated total volume is estimated at 24 million m3 currently deposited in the sediment zone of 1,200 hectares of landslide outcrop area.
The capacity of Polyurethane Sponge to Adsorb Nitrate, Ammonium, and Phosphate
Authors: Edwin T , Mera M , Komala P S , Zukarnaini
Published: May 2023

Nitrate, ammonium, and phosphate are the main contaminants in agricultural runoff that can harm aquatic organisms if in high concentrations reaches water bodies, for that contamination must be controlled. Polyurethane sponge is a durable material and can be used for filtering those contaminants from wastewater, but studies on the mechanism of adsorption by this material are still rare. Therefore, the purpose of this study is to predict the adsorption capacity, removal efficiency, isotherm, and adsorption kinetics of polyurethane sponge on ammonium, nitrate, and phosphate removal. The results of the study show that polyurethane sponge can remove nitrate, ammonium, and phosphate by adsorption mechanism. The highest maximum adsorption capacity is nitrate in 5-hour mixing time, followed by ammonium in 2- hour mixing time, and the last one is phosphate in 3-hour mixing time. The isotherm that is suitable for presenting the removal of nitrate and ammonium is the Freundlich isotherm, while the Langmuir isotherm is more suitable for the removal of phosphate. The adsorption kinetics which fit to describe the mechanism of nitrate and ammonium adsorption is the intra-particle diffusion model, while the phosphate adsorption kinetics is more suitable to be described by the Pseudo first-order model.
Superhydrophobic wood sponge with intelligent pH responsiveness for efficient and continuous oil-water separation
Authors: Du Bin , Li Bin , Yang Kenan , Chao Yi , Luo Rubai , Zhou Shisheng , Li Huailin
Published: May 2023

In recent years, the leakage of crude oil and the discharge of oily wastewater in industrial production have seriously endangered the water environment and ecological safety. Adsorbent materials with excellent oil-water separation performance play an important role in water purification. In this work, we employed a simple yet effective strategy to prepare highly compressible wood sponges. And with the prepared wood sponge as the substrate, the prepared pH-responsive copolymer was coated on the surface of the wood sponge by spraying method, and the pH-responsive superhydrophobic wood sponge was successfully prepared. The experimental results show that the wood sponge has excellent pH-responsive properties and can complete the transition of surface wettability between superhydrophobicity and hydrophilicity according to the change of pH value. The wood sponge has good oil adsorption capacity (12.72 g g−1), and reusability. Continuous oil-water separation can be carried out under the vacuum pump, and the oil-water separation efficiency in one separation cycle is above 92%. It has great application potential in the treatment of oily wastewater.
Study of soil reinforcement in the east of Mashhad using glass granule
Authors: Baradaran Mohammad Saleh , Qazanfari Ramin , Baradaran Sajed
Published: May 2023

As waste production has increased, these materials have been put to their best use to help reduce pollution. Glass bottles account for more than 5% of municipal waste in Mashhad, according to statistics. This study attempted to look into the impact of using glass granule recycled materials on soil parameters. The impact of adding glass granule materials on the properties of weak soil and the need for improvement in the east part of Mashhad was studied. The dominant soil in the east of Mashhad was determined using samples collected from‌ 54‌ different locations. Finally, two experimental relations for determining soil strength parameters were presented. The results show that adding glass granule (GG) lowers the optimum moisture content, and CBR testing on the samples revealed that adding GG by 5% water content increases CBR capacity. Adding GG reduces the CBR in saturated conditions with high densities. According to the obtained results, adding 5% of glass granule is the optimal state that increases CBR and adding more than 5% of additive amounts does not have such an effect. Also, by examining the effect of GG on the shear strength of the soil, it was obtained that the addition of GG increases the internal friction angle of the soil by at least 30% and reduces adhesion by about 40%, as determined by a direct shear test. Adding glass granule in cyclic CBR has no effect in low cycles and has a negative effect in high cycles.
Improving documentation of blood product administration using a standardized electronic health record–based system: a single-institution experience
Authors: Bahmad Hisham F , Oh Kei Shing , Delgado Ruben , Azimi Roshanak , Olivares Esperanza , Poppiti Robert , Howard Lydia , Alghamdi Sarah
Published: May 2023

Objectives

To improve documentation of blood product administration by assessing the completion status of blood transfusions. In this way, we can ensure compliance with the Association for the Advancement of Blood & Biotherapies standards and facilitate investigation of potential blood transfusion reactions.

Methods

This before-and-after study includes the implementation of an electronic health record (EHR)–based, standardized protocol for documenting the completion of blood product administration. Twenty-four months of retrospective data (January-December 2021) and prospective data (January-December 2022) were collected. Meetings were held before the intervention. Ongoing daily, weekly, and monthly reports were prepared, and targeted education to deficient areas as well as spot in-person audits by the blood bank residents were conducted.

Results

During 2022, 8,342 blood products were transfused, of which 6,358 blood product administrations were documented. The overall percentage of completed transfusion order documentation improved from 35.54% (units/units) in 2021 to 76.22% (units/units) in 2022.

Conclusions

Interdisciplinary collaborative efforts helped produce quality audits to improve the documentation of blood product transfusion through a standardized and customized EHR-based blood product administration module.
Reconstruction of the Deformed Tragus Accompanied by Accessory Auricle
Authors: Chen Yongjun , Wei Siming , Hao Dongyue , Xia Wensen , Ma Xianjie , Dong Liwei
Published: May 2023

Background

Accessory auricles are common congenital external ear malformations. However, it remains challenging to treat a complicated accessory auricle and reconstruct the involved tragus.

Objectives

In this study the aim was to present a new classification of accessory auricles and the surgical management of each type.

Methods

We retrospectively reviewed the records of 110 patients who underwent accessory auricle surgery. The accessory auricle was classified by 3 types, according to its morphology and relationship with the tragus: Types I, II, and III. The type III accessory auricle was divided into 3 subtypes: IIIa, IIIb, and IIIc. The surgical techniques utilized varied among the different types.

Results

The total number of accessory auricles in 110 patients was 149. Type I was the most common type (52.3%), followed by types II (31.5%) and III (16.1%). Among the type III subtypes, type IIIa was observed in 12 (8.1%), type IIIb in 3 (2%), and type IIIc in 9 (6%) ears. None of the patients experienced short-term complications. Three patients (4 ears) showed mild hypertrophic scarring. Three patients (3 ears) showed a smaller tragus than the normal side. The average score for aesthetic outcomes was 3.7 points on a 4-point Likert scale.

Conclusions

Classification of accessory auricles provides guidance for surgery. Different surgical techniques were employed based on the type of accessory auricle. The final incision at the edge of the reconstructed tragus provided an aesthetically pleasing outcome.

Level of Evidence: 4
Communities of Support for Care-Experienced Mothers
Authors: Gill Amy , Page Stacey M , Hairston Melissa
Published: May 2023

A genuinely supportive social network is crucial to health and well-being in motherhood. Feeling supported during challenging times can help to shield the impact of adversity and distress. Mutual support networks resulting from authentic, caring connections with others can be particularly beneficial to people with histories of fractured family relationships and/or out-of-home care (OOHC). As three women with lived experience of OOHC, we describe how we have built communities of support to sustain us as we raise our families, reflect on our childhoods, and strive to provide loving environments for our children. Our narratives highlight the value of informal support during the joys and challenges of motherhood, and the need for strength-based and trauma-informed practices within health and social work. Drawing on the theory of social support, we argue that professionals should aim to support care-experienced young people to empower themselves by building autonomous and authentic social connections to promote their well-being, particularly during life transitions such as exiting care and becoming parents.
When the locals are Othered: hybridized representations of Latin American cultures and identities through nation branding
Authors: Miño Pablo
Published: May 2023

This study unveils how Latin American countries present to the eyes of educated, English-speaking audiences in the promotion of exports, tourism, and foreign direct investment offerings through different nation branding campaigns. Their invitations to come make use of strikingly similar strategies: (1) the “adventurous” foreigner venturing to explore a new land; and the (2) proud, local citizen, telling the newcomer what is so special about their nation. The main goal of this study is to introduce the concepts of “hybridization” and “equalization” as powerful constructs to analyze hybridized representations of Latin American cultures and identities through nation branding. This study adds to existing research on cultural nation branding, as well as critical-cultural studies that focuses on analyses of the “Other,” outlining the limitations of branding as a mechanism to promote contested and multifaceted constructs such as countries.