bluuebunny/crossref_metadata_2025_split huggingface dataset:
The effect of Kalimantan Institute of Technology on land use change in Karang Joang
Authors: Rahajeng A S , Pratama M R 
Published: December 2019

Abstract
Placement of a university in an area can be one of the attractions for people in the city and also for people outside the area. This activity will certainly trigger the development of other activities as a form of support for educational activities and it will be affected the numerous changes in land use. This study aims to determine the effect of the presence of the university to land-use changes in surrounding Kalimantan Institute of Technology. This research is a quantitative approach with a descriptive analysis, that used to analysis activity system that supports educational activities and land use change. From 2015 until 2018 there are 512 new buildings that change from cultivated land to residential, industrial, transportation and also trade and service, only 19% of them that appear to meet the needs of students, such as a boarding house, rent houses, stationery stores, restaurants, and grocery stores. In order to anticipated the effect of uncontrolled development for the community, it needs to increase the public awareness to build with the proper conditions and based on the regulation, and for the government is the existence of government regulations especially on building permits.
Evaluation of suitable landuse for existing condition in South Coastal of Sampang Regency
Authors: Budisusanto Yanto , Pribadi Cherie Bhekti , Kunny Latifa Annisa’ 
Published: December 2019

Abstract
The detailed and systematic guidelines and direction of development and urban planning are regulated in Regional Spatial Plan (RTRW) under the Law Number 24 of 1992 concerning Spatial Planning, defined that a structural form and pattern of spatial use, whether planned or not. Because the influence of population growth is relatively high and the level of urbanization is not controlled, eventually resulting in the conversion of land use to other uses. The identified problems occurred in the South Coast of Sampang Regency, namely the utilization transition that occurred in the mainland area around the coast, that related to economic interests which affected the availability of land. With these conditions, it is necessary to map and analyze the suitability of existing conditions with the plan documents. This study identified the suitability of 9 coastal land cover classes using the interpretation method in Pleiades satellite images, by digitizing on screen. From the analysis conducted, the dominating land cover class is rice field, which are 5147.656 Ha. The total suitability of land cover with RTRW is 77%, with the most suitable class being ponds, which is equal to 96.75%. Meanwhile, the most inappropriate class is farm class with an area of around 5.09%.
The improvement of ultrasonic sensor-based device for direct ocean wave measurement program at Western Java Sea – Indonesia
Authors: Adrianto D , Djatmiko E B , Suntoyo  
Published: December 2019

Abstract
Sea wave measurement program in the Western Java Sea has been carried out comprehensively over a full one-year period. This activity requires tools that can work robustly and accurately in the long run in the open ocean environment; one of which is the result of modified tidal gauges based on ultrasonic sensors. Testing of modified device has been carried out simultaneously with the RBRduo wave recorder which is installed close to one another. The test was conducted at Ancol beach, Jakarta Bay, with a sampling frequency of 6 Hz, and the measurement time was carried out for 15 days. Measurement data were analyzed by applying the harmonic sea level elevation method, single wave evaluation, and statistical correlation methods. The results of the harmonic analysis show similar types of daily sea level elevations, as well as 9 (nine) daily elevation constituents that are mutually compatible with each other. Results of the wave analysis from the modified device show Hav = 11.9 cm, Hs = 15.4 cm, and Hmax = 41.1 cm, while the RBRduo instrument shows Hav = 11.8 cm, Hs = 18.1 cm, and Hmax = 39.9 cm. Statistical analysis of the wave data shows that the values produced indicate the results of measurements with the two devices have a high correlation. Therefore, it can be concluded that the modified instrument will be ready and reliable to be used for long-term wave measurements. A sample of measurements from the wave station at the Western Java Sea is shown by the end of this paper.
Obtaining low water line contour value for enclave claim regime 12 nautical miles on Hatohobei Island Republic of Palau against the Republic of Indonesia in according with UNCLOS 1982 using satellite-derived bathymetry
Authors: Kurniawan A , Santoso A I 
Published: December 2019

Abstract
UNCLOS (United Nations Convention on the Law of The Sea) 1982 gives the authority to coastal state to make claims on their sea regime. An island that is more than 125 nautical miles from the mainland where the baseline to draw a territorial line is drawn is given the right to claim the maritime regime by enclave method 12 nautical miles maximum. In determining enclave claims, Low water line contour points are needed through satellite-derived bathymetry using the Lyzenga bathymetry algorithm. The data used in this study is a multispectral planet scope imagery with 3 meters resolution, where the imagery was acquired at the 07th April 2019 and depth sample from NGA nautical chart of the Hatohobei Island and Hellen reef region. To normalize the depth value, tidal correction is done by extrapolating from BIG tides data during 29 days of tides data prediction. The Lyzenga bathymetry is applied using intercept (24.422094) and the coefficient for each band result by Ordinary Least Square regression, where the R2 value obtained is 0.194075. That variable is applied in Lyzenga Bathymetry Formula. The results of the Lyzenga bathymetry algorithm are converted into contour lines to obtain low water line contour, and buffer 12 nautical miles is carried out. The result of this study shows the areas which can be claimed by Hatohobei Island (Republic of Palau). The claim of the maritime space that can be given to Tobi Island is 1634.39 km2.
Analysis of deriving control points from LiDAR intensity image for orthophoto production
Authors: Cahyono A B , Tridasakti D A 
Published: December 2019

Abstract
In aerial photogrammetry need control points and has a reference to the land coordinates where the measurement location is carried out. This control point would be used in aerial photo georeferenced. But in practice it often finds severe field conditions that can affect the process of measuring control points, such a forest, mountains area and even conflict areas, which could make the process of measurement at that location impossible. LiDAR Intensity Image is one product of processing LiDAR data that can be used to produce coordinates of ground control points. So that it can reduce or eliminate the use of coordinates from GCP point measurements in the field of georeferenced in aerial photographs. This research is calculating the accuracy orthophoto produced of control points from LiDAR Intensity Image. The data used are LiDAR data and aerial photography using the Bundle Block Adjustment method. The result is orthophoto which tested for accuracy based on PERKA BIG No. 15 of 2014. The results from the CE90 and LE90 tests for orthophoto that use control points from the Premark Intensity Image are 0.433 m and 0.479 m which means fulfilling the scale 1:2500 class 1 for horizontal and vertical accuracy. For the CE90 and LE90 tests that use control points from a combination of intensity image and GCP points from GPS measurements, produce better accuracy of 0.314 m and 0.301 m so that fulfilling the scale 1:2500 class 1 for horizontal and vertical accuracy.
Financial Aspect and Practicability of Converting Existing Buildings to nZEB Case Study in Cairo, Egypt
Authors: Ahmed Somaya Albadry 
Published: December 2019

Abstract
Financial feasibility of a project is a strong indicator of whether the project will be accepted by different stakeholders of the building or not. This research aims at analysing the financials of converting an existing residential building to net zero energy building. On a case study building, specific retrofit actions are selected, specific PV system is considered and a complete cost analysis is performed based on market available materials in actual prices in the Egyptian market. The research utilizes energy simulation to compare the amount of energy saving between the current and retrofitted cases of the case study building. Actual electricity bills are used to calculate the electricity usage of the building. Similarly, actual solar energy pricing is considered in order to evaluate the feasibility of the conversion. The pricing of the retrofit actions using market available materials is calculated as well. The return on investment study shows how applicable the conversion is.
Towards a Sustainable Touristic Buildings in Egypt Using Innovative Wall Materials
Authors: Ouf Mahmoud Yasser , Mahdy Mohamed M. , Ibrahim Sheriff , ashry Nabil 
Published: December 2019

Abstract
By the unprecedented development witnessed by the world in the field of construction, especially in the tourism sector in Egypt, as well as the efforts of the engineering department of the Egyptian armed forces to make a boom in all standards in the fields of construction. Therefore, it is necessary to search for building materials that are both environment and economy efficient to raise the standard of occupants' life of these facilities, which represented in thermal comfort and all necessities to enjoy the accommodation and the convenience of the intended future operation and maintenance. The objectives of the research are: 1) to evaluate the materials used in the construction of the walls in touristic buildings in the coastal areas of Egypt; 2) to choose the suitable and the economic materials, which is compatible with the surrounding environment, whereas maintaining the level of indoor environmental quality (IEQ) in the buildings; and 3) to proof of this compatibility computationally and geometrically by comparing simulation results with experimental results of these new materials. The Methodology of this research followed the comparative analysis of the simulation results of using traditional Egyptian building materials and innovative ones used in the construction of walls (red bricks and light bricks). Pros and cons were identified according to: savings in construction’s initial cost, providing internal thermal comfort, and reducing electric loads. The study showed the advantages of each type of brick and the benefits gained from it in the near term and the revelation in 2080 (based on the projected climate changes) and calculate the amount of reduction in thermal loads and savings of running costs and other advantages acquired. Moreover, the research showed that light bricks needed to use less reinforcing steel in construction, which was founded to be a fair compromise to compensate its high price.
Synthesis of self-healing polymers precursors from available bio-renewable raw materials.
Authors: Zakharova D V , Pavlov A A , Polezhaev A V 
Published: December 2019

Abstract
A series of a new diglycidyl derivatives of aromatic amines containing a furan fragment was obtained. The synthetic scheme consists of two stages: reductive amination and epoxidation. We used industrially produced inexpensive amines and furfural as starting material. Diepoxides obtained are key components for development of epoxy binders capable of intrinsic self-healing based on the reversible Diels-Alder reaction between furan and maleimide. To demonstrate the possibility of self-healing, the Diels-Alder reaction adduct of one of the products with N-phenyl maleimide was isolated and characterized by 2D NMR spectroscopy. The reversibility of the reaction was confirmed by DSC experiment.
Distribution of electromagnetic fields in heterogeneous composite structures when exposed to direct current.
Authors: Dimitrienko Yu I , Krasnov I K , Zubarev K M 
Published: December 2019

Abstract
In this paper, we study the electromagnetic fields in composite structures that occur when exposed to an external source of direct current, located on the surface of the composite. The article proposes an algorithm for solving the direct problem, based on the application of the finite element method, and a method for solving the inverse problem, which is described as an optimization problem. To search for the extremum of the target functional, an empirically developed method is used. The task is considered in a quasistatic approximation. The developed software was tested on a three-layer composite. The developed algorithms made it possible to solve a given problem with high accuracy.
Research of temperature and stress-strain state of mirror space antenna reflector with fins based on nonbraided polyester material
Authors: Azhevsky Y A , Novikov D 
Published: December 2019

Abstract
A number of designs of reflectors of a mirror space antenna in the form of a thin-walled shell made of high-modulus carbon fiber reinforced with a developed finning system in the form of three-layer panels with a filler made of nonwoven polyester material is considered. Within the framework of the finite element modeling, a comparative analysis of serviceability under operating conditions (radiative heat transfer in open space conditions) has been carried out. Patterns of temperature distribution and thermal displacements along the reflector surface have been obtained. According to the results of the research, MSA reflector’s design layout with the best indicators has been chosen.
C/C composites developed from phthalonitrile based composites
Authors: Aleshkevich V V , Babkin A V , Avdeev V V 
Published: December 2019

Abstract
Carbonization of carbon fabric reinforced plastics (CFRPs) with phthalonitrile matrices at 1000°C was investigated. Four different carbonization modes were tested. It was explored, that a mode with step heat rate is most beneficial. Two different phthalonitrile resins were investigated. Elemental analysis of final carbon-carbon composite (C/C) matrix was carried out and the results showed up to 88.5 mass% carbon presence. Final C/C density reached 1.5991 after only one cycle of impregnation-carbonization. Final porosity of samples reached 9.2%. These results allow to consider phthalonitriles as a prospective carbon precursor for C/Cs manufacturing. Mechanical testing of the C/C samples was performed (Compressive strength P = 72.2MPa, E = 11.8 GPa). Tribological data was received (coefficient of friction = 0.31, wear rate = 30 μ/min). Thermal analysis was carried out (η = 72.94 W/m*K, α = 85.8 cm2/s).
Thermophysical processes models in composite workpieces processed by microwave radiation
Authors: Belenkov E S , Prosuntsov P V , Reznik S V 
Published: December 2019

Abstract
The solution that improves energy effectiveness and polymer composite materials parts quality by means of microwave heating with polymer matrix curing is proposed. Thermal state analysis of workpiece for various layout configurations of microwave heating equipment was conducted. It was found that the most uniform heating is obtained inside the rectangular chamber while workpiece is rotating around the transverse axis.
The method of reinforcement of holes of mechanical fasteners with composite liners
Authors: Nasonov F A , Morozov B B , Bukharov S V , Zinin AV , Kharchenko K D , Piskunov G S 
Published: December 2019

Abstract
Developed and experimentally justified constructive and technological method of increasing strength and reliability of point mechanical connection of composite panels by thermocompression installation along the contour of the hole of the intermediate element-less rigid composite liner. The effectiveness of the method is provided by reducing the stress concentration in the hole area and confirmed finite element analysis and results of mechanical tests of samples of connection.
Stress-strain state of the interfacial layer in a visco-composite composite with longitudinal shear
Authors: Dudchenko A A , Lurie S A , Makovskij S V , Shramko K K 
Published: December 2019

Abstract
Annotation. In this paper, we propose a three-phase method for determining the effective properties of reinforced by whiskerized fibers composite materials. The model takes into account the presence of a whiskerized interfacial layer between the fiber and the matrix. The calculation of the stress-strain state of the interfacial layer loaded with a longitudinal shear using the Eshelby self-consistent field method is given.
Development of a new experimental method for the determination of inplane shear strength and elastic characteristics of polymer composite materials based on highmodulus carbon fiber-reinforced plastics having the ±45° plies
Authors: Matyushevsky Nikolai , Popov Alexei 
Published: December 2019

Abstract
A new method for the determination of shear strength and modulus of high-modulus CFRP reinforced with ±45°plies was developed. The optimal geometrical parameters of the specimen to determine shear properties of high-modulus CFRP reinforced with the ±45° plies were determined by calculation and experimental methods. A comparative analysis of the results of the experimental determination of shear properties was performed.
Topology optimization of the lattice payload adapter for carrier rocket
Authors: Baldzhiev R S , Alekseyev A A , Azarov A V 
Published: December 2019

Abstract
Current study is dedicated to the evaluation of the topology optimization method for the design of load-bearing aerospace structures. The subject of research was composite spacecraft attach fitting (adapter) which provides the interface between a spacecraft and a commercial launcher. Modelling of stress-strain state of the lattice payload adapter under operation conditions was performed. Compression strengths of structural ribs were defined together with the stiffness and buckling stability taken as the design constrains. By means of the topology optimization procedure optimal material distribution in the payload adapter was obtained. The workability of the adapter was proved by the confirmatory analysis.
Estimation of the effective elastic characteristics of carbon composite materials by testing ring-shaped samples under high temperatures
Authors: Ponomarev K A 
Published: December 2019

Abstract
A computational and experimental method is suggested to determine indirectly the elastic properties of carbon composite materials at room temperature up to 2200°C and more. The method involves loading of ring-shaped test specimens through diametrical compression using non-cooled indenters at three points, within the elastic strain range, with ductility measurements. Based on the measured ductility values, shear moduli, as well as the longitudinal and transversal elasticity moduli in the test specimen cutting plane, can be determined by solving the identification problem. Results of experimental assessment of the permissibility of repetitive mechanical and thermal loading of the carbon-carbon composite material are presented. Method tryout with high-density needle-punched composite material is described.
Furfurylglycidyl ether: a new effective active diluent for epoxy resins from bio-renewable raw materials
Authors: Petrova T V , Solodilov V I , Kabantseva V E , Karelina N V , Polezhaev A V 
Published: December 2019

Abstract
New reactive diluents based on bio-renewable raw materials are widely explored as additives to traditional resins. We investigated the effect of furfurylglycidyl ether on the rheological and thermomechanical properties of a widely used epoxy binder with an anhydride hardener. It was shown that the addition of 5-15% active diluent significantly reduces the viscosity of the composition to the values optimal for RTM and vacuum infusion technologies for fiber-reinforced plastics and does not lead to a significant decrease in heat resistance and Young’s modulus of the cured binder
Active thermography as a contemporary method for ensuring the quality of composite material products
Authors: Kotovshchikov I O 
Published: December 2019

Abstract
This paper examines the current trends in the quality control of composites and the perspectives of application of active thermography method to ensure the quality of products made of composite materials. Using NDTherm™ – system of active thermography, the research has been carried out on composite samples and products with inbuilt artificial defects. Based on research results the author highlights the most promising applications of the active thermography method.
Metal-coated carbon fiber model
Authors: Nelyub V A , Bocharov A A 
Published: December 2019

Abstract
The results of the modeling of the stress-strain state of the filaments from which the carbon unidirectional tape LUP is made, are provided for the latter’s initial state and after applying a grade 12X18H10T stainless steel coating thereon. The results of calculations were compared to experimental data. Magnetron sputtering was used to apply a metallic coating, with pre-cleaning the carbon tape. These models allow to optimize the thickness and choose the type of metallic coating.
Layered nanostructured composites with self-healing effect based on plastic borosiloxane matrices
Authors: Sitnikov N N , Khabibullina I A , Mashchenko V I 
Published: December 2019

Abstract
This paper presents a layered composite material with an internal self-healing matrix based on borosiloxane compounds. The effects of self-healing in materials of various chemical nature (polymers, cements, ceramics, metals and composite materials) are considered and evaluated from the point of view of their practical application and the creation on their basis of self-healing composites. The properties and characteristics of borosiloxane are described. The prospects of using of borosiloxane as an internal self-healing matrix of layered or reinforced composites are shown. The effect of self-healing of the developed layered composite at breakdown and cut is demonstrated.
Transport properties of ceramic composites based on bismuth and indium oxides
Authors: Dergacheva P E , Kulbakin I V , Fedorov S V 
Published: December 2019

Abstract
Solid solutions based on indium oxide In2-xZrxO3+0.5x (x = 0.005, 0.01, 0.015, 0.02, 0.025, 0.05, 0.075, 0.1) were synthesized and temperature dependences of their conductivity at 25-800 °C were investigated. It was found that In1.985Zr0.015O3.0075 solid solution possessed the highest conductivity of about 100 S/cm at 800 °C. Dense In1.985Zr0.015O3.0075 – 50 vol.% Bi2O3 ceramic composite was obtained and investigated, its microstructure was studied, and the formation of fine-grained structure with homogeneous distribution of components by volume was demonstrated. The total conductivity of composite was measured, and oxygen fluxes for composite 1.7 mm thick membrane at 750-800 °C was obtained. The oxygen flux was found to be 2.4 ×~ 10−7 mol⋅cm−2⋅s−1 at 800 °C when oxygen partial pressures on both sides of membrane was 0.21 atm/0.017 atm, while the oxygen selectivity was more than 20. This indicates thepromising of investigated composite to use as an intermediate-temperature (750800 °C) ion transport membrane for obtaining of pure oxygen from air.