bluuebunny/crossref_metadata_2025 huggingface dataset:
Negative emotions and culture
Authors: Jovanov Rastko
Published: February 2021

The article considers the relation and mutual influence of negative emotions
and culture. It provides arguments for the distinction between negative and
positive emotions. The main claim is that what distinguishes negative
emotions is that their intentionality is directed towards the subject
themselves, by which the subject becomes the emotion?s hostage. Although
intuitively wrongheaded, the article claims that negative emotions can have
a positive impact in social life and serve the advancement of human values
and struggles against injustice. Valuing negative emotions refers to
correspondence with relevant social norms, that is to say, how can we judge
social events in the framework of ethical, moral, or social values.
Share of death: Care crosses camp
Authors: Tsagdis Georgios
Published: February 2021

The essay thematises the question of care in conditions of total power - not
merely extra muros, in the everyday life of the Third Reich, but in its most
radical articulation, the concentration camp. Drawing inspiration from
Todorov?s work, the essay engages with Levinas, Agamben, Derrida and Nancy,
to investigate Heidegger?s determination of Dasein?s horizon through a
solitary confrontation with death. Drawing extensively on primary
testimonies, the essay shows that when the enclosure of the camp became the
Da of existence, care assumed a radical significance as the link between the
death of another and the death of oneself. In the face of an apparatus of
total power and its attempt to individuate and isolate death, the sharing of
death in the figure of care remained one?s most inalienable act of
resistance and the last means to hold on to death as something that could be
truly one?s own.
Human rights: Moral claims and the crisis of hospitality
Authors: Zaric Zona
Published: February 2021

This paper focuses on the current international refugee crisis and the ways
in which it is leading to sharp symbolic and physical violence through the
process of ?othering.? Based on Hannah Arendt?s discussion of statelessness
and the question of the right to have rights, and Giorgio Agamben?s
discussion of Homo Sacer, as well as drawing on other key authors such as
Judith Butler, we argue that conditions of extreme human vulnerability and
dangers of totalitarianism are being radically worsened by the ethnicized
and racialized denial of the other, that is, of human rights. Rather than
advocating an abstract cosmopolitanism, however, without strong purchase in
contemporary social life, the paper concludes by noting the need to place
oneself in a position of discomfort, in order to confront the tension
between particularistic attachments and universalist aspirations, between
the multiplicity of laws and the ideal of a rational order common to all
polities, between belief in the unity of humankind and the healthy
antagonisms and tensions generated by human diversity.
Two-step modulus-based matrix splitting iteration method for horizontal linear complementarity problems
Authors: Jia Lu , Wang Xiang , Wang Xuan-Sheng
Published: February 2021

The modulus-based matrix splitting iteration has received substantial
attention as a momentous tool for complementarity problems. For the purpose
of solving the horizontal linear complementarity problem, we introduce the
two-step modulus-based matrix splitting iteration method. We also show the
theoretical analysis of the convergence. Numerical experiments illustrate
the effectiveness of the proposed approach.
Relative relation matrix-based approaches for updating approximations in multigranulation rough sets
Authors: Xian Zhanglin , Chen Jinkun , Yu Peiqiu
Published: February 2021

Multigranulation rough set (MGRS) theory has attracted much attention.
However, with the advent of big data era, the attribute values may often
change dynamically, which leads to high computational complexity when
handling large and complex data. How to effectively obtain useful knowledge
from the dynamic information system becomes an important issue in MGRS.
Motivated by this requirement, in this paper, we propose relative relation
matrix approaches for computing approximations in MGRS and updating them
dynamically. A simplified relative relation matrix is used to calculate
approximations in MGRS, it is showed that the space and time complexities
are no more than that of the original method. Furthermore, relative relation
matrix-based approaches for updating approximations in MGRS while refining
or coarsening attribute values are proposed. Several incremental algorithms
for updating approximations in MGRS are designed. Finally, experiments are
conducted to evaluate the efficiency and validity of the proposed methods.
Approximate controllability of impulsive system involving state-dependent delay and variable delay in control via fundamental solution
Authors: Abdal Syed , Kumar Surendra
Published: February 2021

This article is concerned with the approximate controllability for a new
class of impulsive semilinear control systems involving state-dependent
delay and variable delay in control in Hilbert spaces. We formulate new
sufficient conditions which guarantee the existence of solution to the
considered system. We use the theory of fundamental solution,
Krasnoselskii?s and Schauder?s fixed point theorems to establish our major
results. Finally, two examples are constructed which demonstrate the
effectiveness of obtained results.
Toric objects associated with the dodecahedron
Authors: Baralic Djordje , Grbic Jelena , Limonchenko Ivan , Vucic Aleksandar
Published: February 2021

In this paper we illustrate a tight interplay between homotopy theory and
combinatorics within toric topology by explicitly calculating homotopy and
combinatorial invariants of toric objects associated with the dodecahedron.
In particular, we calculate the cohomology ring of the (complex and real)
moment-angle manifolds over the dodecahedron, and of a certain quasitoric
manifold and of a related small cover. We finish by studying Massey products
in the cohomology ring of moment-angle manifolds over the dodecahedron and
how the existence of nontrivial Massey products influences the behaviour of
the Poincar? series of the corresponding Pontryagin algebra.
Fractional integral inequalities of Hermite-Hadamard type for convex functions with respect to a monotone function
Authors: Mohammed Pshtiwan
Published: February 2021

In the literature, the left-side of Hermite-Hadamard?s inequality is called a
midpoint type inequality. In this article, we obtain new integral
inequalities of midpoint type for Riemann-Liouville fractional integrals of
convex functions with respect to increasing functions. The resulting
inequalities generalize some recent integral inequalities and
Riemann-Liouville fractional integral inequalities established in earlier
works. Finally, applications of our work are demonstrated via the known
special functions.
Mathematical modeling of thin layer drying characteristics and proximate analysis of Turkey berry (Solanum torvum)
Authors: Sivakumar Dana , Subramani Sekar , Thirumalai Natesan , Marimuthu Mudhu , Arockiaraj Godwin
Published: February 2021

In the present work the drying characteristics and proximate analysis of Turkey berry (Solanum torvum) were analyzed under open Sun drying and greenhouse drying with two different glazing materials (UV polyethylene sheet and drip lock sheet) under passive and active modes. The drying rate under different modes of drying are 18.73 g per hour in drip lock greenhouse active mode, 12.50 g per hour in UV polyethylene sheet greenhouse active mode,15.22 g per hour in drip lock sheet greenhouse passive mode, 11.84 g per hour in UV polyethylene sheet greenhouse passive mode and 10.65 g per hour in open sun drying. Twelve mathematical models were chosen to determine the drying characteristics of Turkey berry. From the statistical analysis it is found that modified Henderson and Pabis model is the best drying model describing thin layer drying characteristics of Turkey berry in both open Sun drying and greenhouse drying. The goodness of the fit achieved is based on the values of coefficient of determination, R2, sum square error, root mean square error, and reduced chi square, ?2. From the proximate analysis of dried Turkey berry it is found that more amount of carbo-hydrate is retained in UV polyethylene greenhouse dryer under passive mode. In drip lock greenhouse dryer under passive mode the retention of vitamins such as protein, vitamin C, and ash content showed a positive sign. In drip lock green-house dryer under active mode the retention of calcium, iron and dietary fibre is found to be high. Finally it is observed that more amounts of nutrients are retained in greenhouse drying than in open Sun drying.
Ortam Bağıl Nemi ve Sıcaklığının Taş Yünü Yalıtım Malzemesinin Performansı Üzerine Etkileri
Authors: ÖKTEN Korhan , ÖZDEMİR Adem Oğuzhan , ÖZTÜRK Ertuğrul , DEMİR Hatice , ÖZDEMİR Mustafa
Published: February 2021

Konutlarda enerji tasarrufu amaçlı yalıtım uygulaması oldukça yaygındır. Taş yünü malzemesi de birçok avantajından dolayı yalıtım uygulamalarında tercih edilen yalıtım malzemelerinden biridir. Bu çalışmada farklı bağıl nem ve sıcaklık değerlerinde tutulan ortam koşullarında taş yünü yalıtım malzemesinin performansı deneysel olarak incelenmiştir. Deney düzeneği olarak sabit bağıl nem ve sıcaklıkta tutulan bir kontrol hacmi ve kontrol hacmi içerisinde, içinde buz bulunan huni şeklinde bir depo kullanılmıştır. Böylece huni içerisine geçen ısı ile birlikte buz erimiş, damlama miktarları hassas bir tartı ile ölçülmüş ve değişen parametrelerin ergime miktarını nasıl değiştirdiği saptanmıştır. Ortam koşulları olarak bağıl nem değerleri %33-90 aralığında ve sıcaklık değerleri 25-35 oC aralığında seçilmiştir. Sonuçlar ısı transferi, yalıtım kalınlığı ve ısı iletim katsayısı cinsinden kıyaslanmıştır. Çözümler için tek boyutlu ısıl direnç ağları kullanılmıştır. Ayrıca elde edilen ısı iletim katsayıları belirli koşullar altında literatür ile doğrulanmıştır. Sonuçlar incelendiğinde yalıtım malzemesine geçen maksimum ısı transferi miktarı bağıl nem değişimine bağlı olarak %70, sıcaklığa bağlı olarak %34 arttığı, Isıl iletkenliğin ise bağıl nemin artışına bağlı olarak maksimum %90, sıcaklık artışına bağlı olarak %30 arttığı görülmüştür. Son olarak yalıtım kalınlığı incelendiğinde ise bağıl nem ve sıcaklığa bağlı olarak yalıtım kalınlığı yaklaşık 2 katına çıkarıldığında aynı yalıtım performansını verdiği belirlenmiştir.
Penerapan Metode Diskusi Kelompok Kecil dalam Model Pembelajaran Think-Talk-Write Sebagai Upaya Meningkatkan Prestasi Belajar Bahasa Inggris Siswa Kelas X
Authors: Perawati Ni Made
Published: February 2021

Penelitian ini dilaksanakan di SMK Negeri 1 Klungkung di kelas X AKKL 1 yang kemampuan siswanya untuk pelajaran Bahasa Inggris cukup rendah. Tujuan penulisan penelitian tindakan kelas X AKKL 1 ini adalah untuk mengetahui apakah model pembelajaran Think-Talk-Write dengan diskusi kelompok kecil dapat meningkatkan prestasi belajar siswa. Metode pengumpulan datanya adalah tes prestasi belajar. Metode analisis datanya adalah deskriptif baik untuk data kualitatif maupun untuk data kuantitatif. Hasil yang diperoleh dari penelitian ini adalah model pembelajaran Think-Talk-Write dapat meningkatkan prestasi belajar siswa. Ini terbukti dari hasil yang diperoleh pada awalnya mencapai nilai rata-rata 66,11, pada siklus I mencapai nilai rata-rata 72,36 dan pada siklus II mencapai nilai rata-rata 78,75. Kesimpulan yang diperoleh dari penelitian ini adalah model pembelajaran Think-Talk-Write dapat meningkatkan prestasi belajar Bahasa Inggris siswa kelas X AKKL 1 SMK Negeri 1 Klungkung.
Pengaruh Penambahan Abu Sekam Padi Terhadap Sifat Fisis dan Mekanis pada Mortar
Authors:   Universitas Lampung, Siregar Ahmad Munawir , Marjunus Roniyus ,   Universitas Lampung, Sembiring Simon ,   Universitas Lampung
Published: February 2021

The research was carried out about the effect of adding rice husk ash to physical and mechanical properties of mortar. Mortar was moulded with three composition comparisons between ordinary portland cement, rice husk ash, and rice stalk fiber. Rice husk ash was burned at temperature of 700 OC for 2 hours, rice stalk fiber was mechanically sliced up to 0.8 mm in size, then mortar molding and maintenance was processed for 28 days. The mortars that had reached the age of 28 days were tested according to the Indonesia National Standard (SNI) including physical properties (water absorption, density), and mechanical properties (compressive strength, modulus of elasticity, modulus of rupture). Characterization of microstructure, morphology and counting all elements on the surface of mortar were processed by using Scanning Electron Microscopy - Energy Dispersive X-ray Spectroscopy (SEM-EDS). The results of research that had been carried out, mortar with the most optimum physical and mechanical properties was mortar B with a composition of 65%: 10%: 25%. The results of the characterization using SEM-EDS showed that the surface of mortar B was better with grain diameter (1.4 ± 0.9) µm and the most dominant element in the mortar was element of Ca and Si which functioned as mortar binder and hardener.
Deposisi ZnO Doping Ag pada Substrat Alumunium Foil untuk Degradasi Methylene Blue
Authors:   UIN Walisongo Semarang, Anggita Sheilla Rully
Published: February 2021

This research has successfully deposited ZnO: Ag on aluminum foil substrates with variations in deposition temperature. The purpose of this study was to obtain the surface morphology of ZnO:Ag on aluminum foil substrates with variations in deposition temperature and obtain optimization of the photocatalytic activity of ZnO: Ag in degrading Methylene Blue dyes. ZnO:Ag deposition on the aluminum foil substrate was carried out by the sol-gel method and spray coating deposition technique. Surface morphology characterization and photocatalytic activity with SEM and with UV-Vis. The surface morphology results obtained from ZnO:Ag on aluminum foil substrate with deposition temperatures of 250 ℃, 300 ℃, 350 ℃, and 400 ℃ are the forms of ganglia with indications as ZnO and Ag grains attached to ZnO. Obtained surface area and roughness level ZnO:Ag decreases with an increase in temperature from 250 ℃ - 300 ℃, and surface area and roughness increases at 350 ℃ -400 ℃. The highest level of roughness is found in the ZnO layer: Ag temperature 400 ℃. The most optimum photocatalytic activity is indicated by the largest percentage of degradation. The highest percentage of degradation is shown by the ZnO: Ag layer with a temperature of 350 ℃ of 87.33%. This is due to the modification of silver at low temperatures which is <400 ℃ effective for photocatalytic activity.
Studi Pengaruh Perlakuan Plasma Terhadap Sifat Material Antibakteri Kain Kassa Menggunakan Minyak Atsiri (Zingiber Officinale Rosc)
Authors:   Politeknik STTT Bandung, Murti Wilda , Putra Valentinus Galih Vidia ,   Politeknik STTT Bandung
Published: February 2021

This work was aimed to study the influence of plasma on changes in functional groups of a wound dressing called ‘kain kassa’ which immersed in essential oil from ginger (Zingiber Officinale Rosc). In this work also analyze the differences of wound dressing between with or without using the help of plasma. The Wound dressing and the essential oil of ginger were selling in the market, the wound dressing doesn’t have information about fiber which form itself. So, Dissolution test and additional test were carried out. Then, The result of the differences of wound dressing was analyzed with Fourier Transform Infra Red (FTIR), the plasma treated has higher absrobance of O-H and C-H at wavenumber 3350 cm-1 and 2930 cm-1. However at 1700 cm-1 C=O, the wound dressing without plasma has higher absorbance than wound dressing with plasma
Studi Automatic Picking Waktu Tiba Gelombang P dan S dengan Menggunakan Spektogram pada Obspy Python
Authors:   Universitas Pembangunan Nasional Veteran Yogyakarta, Palupi Indriati Retno , Raharjo Wiji ,   Universitas Pembangunan Nasional Veteran Yogyakarta
Published: February 2021

One of important thing in locating hypocenter process is determine P and S arrival time of the seismogram. Beside that, frequency analysis by FFT method is needed to know the character of the seismogram, like dominant frequency. For further analysis, FFT method can be a good tools in determine P and S wave arrival time in the spectogram form. This process is called automatic picking.
Peningkatan Karakteristik Listrik Sel Elektrokimia Cu(Ag)-Zn dengan Penggunaan AnodaTumbal Mgpada Accumulator Berbahan Air Laut
Authors:   Universitas Lampung, Pauzi Gurum Ahmad , Nisa Mia Abi ,   Universitas Lampung, Samosir Ahmad Saudi ,   Universitas Lampung, Sulistiyanti Sri Ratna ,   Universitas Lampung, Simanjuntak Wasinton ,   Universitas Lampung
Published: February 2021

This research was conducted to study the use of magnesium (Mg) as a sacrificial anode to protect Zn which is used as anode in electrochemical cells to generate electrical energy from seawater. Cu coated with Ag metal is used as a cathode to protect it from cathodic corrosion. The electrochemical cell consists of 20 cells arranged in a series, and each cell is filled with 300 mL of water. The electrochemical cell was connected to a 3 watt 12 volt LED load for 72 hours and data collection of electrical characteristics including voltage, current, and light intensity, every 1 hour. From the voltage and current data, the amount of resistance is calculated. The results showed that the use of Mg as a sacrificial anode resulted in greater electrical characteristics data compared to electrochemical cells without the use of sacrificial anodes.
Analisis Dinamika Molekuler Pengaruh Suhu Tubuh Terhadap Keseimbangan Volume Human Serum Albumin (HSA) Menggunakan Model Potensial Lennard-Jones
Authors:   Lampung University, Sidik Muhammad Rasyid , Yulianti Yanti ,   Lampung University, Asmi Dwi ,   Lampung University
Published: February 2021

Research on molecular dynamics analysis of the influence of body temperature on HSA fluid volume balance using the Lennard-Jones potential model with temperature variations of 35 ℃, 37 ℃, and 40 ℃ in the form of cubic systems in GROMACS applications. The results show that the denaturation of HSA that is affected by body temperature causes changes in osmotic pressure in the body with changes in the balance of HSA fluid volume. At temperatures of 35 ℃ denaturations occurs Thr566 to Gln580 with a distance of 20.9 A, Lys444 to Met446 with a distance of 5.76 A, Asn61 to Cys62 with a distance of 3.9 A, Glu570 to Ser579 with a distance of 18.09 A, and Gly431 to Cys438 with a distance of 11.43 A. At a temperature of 37 ℃ denaturations occurs Ile513 to Cys514 has a distance of 3.75 A, Pro303 to Glu311 has a distance of 12.78 A, Asn267 to Ser270 has a distance of 4.65 A, Leu275 to Cys279 has a distance of 7 A At a temperature of 40 ℃ denaturations occurs Ser304 to Glu311 with a distance of 11.38 A, Asn267 to Ile271 with a distance of 7.75 A, Asn61 to Cys62 with a distance of 3.9 A, and Ala511 to Cys514 with a distance of 4.86 A. RMSD results shows that stable structural changes occur in HSA with values of 2.6–9.0 nm. And the Lennard-Jones average energy yield shows that the interaction behavior between HSA atoms is dynamic. At a temperature of 35 ℃ of 7.97E + 05 kJ/mol, a temperature of 37 ℃ of 6.78 kJ/mol, and a temperature of 40 ℃ of 7.89E + 05 kJ/mol.
Identifikasi Ketebalan Lapisan Lapuk pada Area Rawan Longsor Menggunakan Metode Seismik Refraksi (Studi Kasus: Desa Kalirejo Kabupaten Kulonprogo)
Authors:   Universitas Tanjungpura, Muhardi Muhardi , Perdhana Radhitya ,   Universitas Tanjungpura, Utama Muhammad Reza July ,   BMKG, Laia Mitranikasih ,   Dinas Lingkungan Hidup, Kabupaten Nias Selatan, Pratiwi Tisar Dewi , Nurwulandari Randha Ayu
Published: February 2021

Kalirejo Village, Pengasih District, Kulonprogo Regency, is an area that is prone to landslides. The purpose of this study is to identify the weathering layer thickness, which is one of the triggering factors for landslides. This study was conducted using the seismic refraction method by applying two lines. Line 1 uses 24 geophones, has a distance of 1 meter between geophones, while Line 2 uses 24 geophones, has a distance of 2 meters between geophones. The results showed that the velocity of seismic wave propagation in the weathering layer for Line 1 was 400 m/s, and in the slip surface was 2,300 m/s. The weathering layer thickness on Line 1 is 7.6 - 9.8 meters and the slope is steep so that this location is predicted to have a potential landslide. While the velocity of seismic wave propagation in the weathering layer for Line 2 was 300 m/s, and in the slip surface was 2,200 m/s. The weathering layer thickness on Line 2 is at less than 2 meters, so this location is predicted not to have a landslide potential even though the slope is steep
Analisis Karakteristik Kelistrikan Campuran Belimbing Wuluh dan Jeruk Lemon Sebagai Sumber Listrik
Authors:   Universitas Kaltara, Sulaiman Dady , Romadhoni Wibowo ,   Universitas Kaltara, Arlina Arlina ,   Universitas Kaltara
Published: February 2021

Electrical energy is one of the primer facilities used in every activity. Almost all the existing facilities use electricity. This is inversely proportional to the depleting energy source. The solution to this problem is to replace fossil fuels with renewable energy sources. Renewable energy is a source of energy that can be recycled and does not damage the environment. One type of renewable energy is to use the electrolysis method. Electrolysis Method is one of the renewable energy sources. This method uses electrolyte solution which can be found in sour and runny fruit such as lemon (Citrus Limon L.) and Wuluh Star fruit (Averrhoa bilimbi). The study was conducted in a laboratory by mixing the results of the juice of the two fruits with different compositions. The mixes are placed in the arcs (a mixture container to test the electrical properties) and then tested using a multimeter every 2 hours for 24 hours. The results are described in graphical form. The average power of each mixture is, C1 = 2.2mW, C2 = 4.7mW, and C3 = 8.5 mW and based on the graph, each mixture has decreased voltage and current. Even so among the three mixtures, the third mixture has a better electrical power value than the other two mixes. This shows that the higher the acidity of a solution the higher the electricity produced.
Karakteristik Listrik dan Optik pada LED dan Laser
Authors:   Jurusan Fisika FMIPA UNEJ , Jember, Mutmainnah Mutmainnah , Rofii Imam ,   Jurusan Fisika FMIPA UNEJ , Jember, Misto Misto ,   Jurusan Fisika FMIPA UNEJ , Jember, Azmi Dewi Ulul ,   Jurusan Fisika FMIPA UNEJ , Jember
Published: February 2021

Characterization of LED and laser is very important to know the specifications. An electrical and optical characteristic study has been conducted on LED and Laser. The LED used are Ultrabright red, blue, green, red, yellow and white colors and red color laser sources. Based on the results of the study stated that the current and voltage values are almost linear for voltages above 3 volts, the smallest dark current value on white LED lights, yellow LED, and laser. Yellow LED has the biggest energy loss. The optical characteristics included FWHM (Full width at half maximum) , relative intensity and angle radiated maximum. The red LED has a FWHM value and the largest angle θo, while laser has the smallest FWHM and angle θo.
Validasi Pulse oximeter dalam Penentuan Kadar Oksigen dalam Darah
Authors:   Program Studi Fisika, Fakultas Sains dan Teknologi Terapan, Universitas Ahmad Dahlan, Salamah Umi , Izziyah Asna Nur ,   Program Studi Fisika, Fakultas Sains dan Teknologi Terapan, Universitas Ahmad Dahlan, Raharjo Arifan Arif ,   Program Studi Fisika, Fakultas Sains dan Teknologi Terapan, Universitas Ahmad Dahlan
Published: February 2021

The level of oxygen saturation in the blood is important to know the health condition of the body. If the human body lacks or excess oxygen, it will cause illness and other bodily system work disorders. One of the tools to detect the oxygen saturation level is the Pulse oximeter. Previous research has successfully designed a Pulse oximeter based on Arduino. The pulse oximeter produces a photoplethysmograph (PPG) signal that corresponds to the standard PPG signals in 20 test samples. PPG signals can be processed to provide information on oxygen saturation (SpO2) levels in the blood. In this research, validation of the Pulse oximeter is compared with a commercial pulse oximeter, the digital oximeter JZK-301. The results obtained from this validation are the smallest deviation errors are 4.83% while the largest errata is 22.51%. The greatest accuracy of 95.17%, of respondents number 16 and the smallest accuracy is 77, 49%, that is the number of respondents 12. The average deviation of 20 data is 12.82% with the resulting accuracy is 87, 18%. This indicates that the self-designed pulse oximeter has good efficiency and can be developed further
Penggunaan Arang Aktif Berbahan Dasar Limbah Biomassa Pada Proses Filtrasi Air Groundtank Ditinjau dari Uji TDS, Uji Kejernihan dan Uji Fe
Authors:   Yogyakarta State University, Wardani Yeni Ristya , Naqiyah Mardhiyyatin ,   Yogyakarta State University, Nurmayanti Devy ,   Yogyakarta State University, Rohman Abdul Aziz N ,   Yogyakarta State University, Suparno Suparno ,   Yogyakarta State University
Published: February 2021

Natural resources on Earth consist of abiotics and biotics. Water, including biotic natural resources is one of the most important elements in supporting the survival of human life. One of water source which was widely used by resident around the Yogyakarta State University was the water of Institute of Development and Quality of Education Assurance (Lembaga Pengembang dan Penjamin Mutu Pendidikan) of Yogyakarta State University. This water resource was used to fulfill the needs of employees, the institute visitors, and traders around Karangmalang Culinary Park. However, the prior observation showed that the color of the water was prone to muddy and contains many sediments substances. This research was aimed to filter the water of that institute into pure water according to the physics parameter. This research was conducted by utilizing biomass waste in the form of teak, husk, and coconut fiber to be processed into active charcoal which later used to filter the water. Additional materials used in this research were sand and gravel. The result of water’s total dissolve solid (TDS) has decreased by using the three active charcoal of biomass waste. Among those activated charcoal, the carbon which formed by teak showed the most significant result. Furthermore, in Fe content test, the most significant result of decreasing Fe content was showed by activated charcoal from husk base material. It can be concluded that the most effective activated charcoal material was formed by teak biomass waste which has a large pore structure.
PENGARUH PENAMBAHAN CO-DOPING Mg/La TERHADAP KARAKTERISASI TiO2 SEBAGAI FOTOELEKTRODA
Authors:   Universitas Syiah Kuala, Mursal Mursal , Azmi Nurul ,   Universitas Syiah Kuala, Ismail Ismail ,   Universitas Syiah Kuala
Published: February 2021

The effect of Mg/La co-doping addition on the caracteristics of TiO2 as photoelectrode have been studied. This study aims to investigate the effect of Mg/La co-doping concentration on the characteristics of TiO2. This study aims investigate the effect of Mg/La co-doping concentration on the characteristics of TiO2. Mg/La was varied from 0% mol, 0.4 / 0.6% mol, and 0.6 / 0.4% mol. Synthesis of TiO2 co-doping Mg/La was done by sol gel method. The resulting of powder pure TiO2 and co-doping Mg/La was made to paste, and was deposited on a glass substrate with a size of 2.5 x 2.5 cm and sintered at 600°C for 1 hour. Mg / La co-doped TiO2 layers were characterized using XRD, UV-Vis, and FTIR spectrometers. The results showed that TiO2 was the mos dominan phase appeared in pure TiO2 sample. The phase of MgO, MgTiO3, Mg2TiO4, and La2O3 were found in Mg/La co-doped TiO2 samples. The crystal size of Mg/La co-doped TiO2 was varied from 8.85 to 7.70 nm. In this research, we obtained that the energy gap was varied from 3.52 to 3.5 eV depent on co-dopant concentration. FTIR measurement showed groups of Ti-O, Ti-O-Ti, Ti-O-O, and H-O.
Rancang Bangun Mesin Replika Penghasil Gas Vulkanik sebagai Studi Awal Monitoring Erupsi Gunung Berapi
Authors:   Universitas Ahmad Dahlan, Salamah Umi , Hidayah Qonitatul ,   Universitas Ahmad Dahlan, Kusuma Damar Yoga ,   Universitas Ahmad Dahlan
Published: February 2021

Indonesia is one of the countries that has the third-largest number of volcanoes in the world. Several volcanoes are still active today. This places Indonesia prone to disasters from the volcano. One of the volcanic activities is characterized by the release of poisonous gases such as CO2. At a certain threshold, this poisonous gas can kill living things. This research has designed a gas-producing engine as a replica of volcanic gas. This machine is very supportive of the development of volcanic gas research on a laboratory scale because it has the advantage of being lighter, simpler construction, cheaper and portable machine construction process. The gas produced by the machine is tested using the Dragger X-am 7000. , CO2, H2S, SO2, and CO. The results were obtained for 60 seconds of starting the engine, namely CH4 2.0% LEL, CO2 1.6% Vol, H2S 4.3 ppm, SO2 1.0 ppm, and CO 271 ppm.
Aplikasi Sensor BH1750 Untuk Sistem Monitoring Pertumbuhan Tanaman Cabai Menggunakan Arduino Bertenaga Surya Terintegrasi Internet of Things (IoT)
Authors:   Universitas Binawan, Wahyu Syafrima , Syafaat Mohamad ,   Universitas Binawan, Yuliana Agnes ,   Universitas Binawan, Meliyani Revi ,   Universitas Binawan
Published: February 2021

The purpose of this study is to design the monitoring system to observe the growth of Chili plant that is integrated with the Internet of Things (IoT) with the power source coming from solar panels. Important variables to support plant growth are soil moisture, ambient temperature as well as the right time and duration of watering. Measurement of light intensity is carried out by the BH1750 sensor. The measurement results of the sensor will be displayed on the LCD (Liquid Crystal Display) and can be accessed via an Android-based application. The result of testing the light intensity monitoring tools on chili plants showed good accuracy. The monitoring system that has been designed is equipped LCD that show variable result.
Perancangan Sensor LVDT dan Potensiometer Geser Sederhana Sebagai Alat Potensial Pendeteksi Pergeseran Tanah
Authors:   Institut Teknologi Sumatera, Syahputra Tri Siswandi , Asyubi Heru ,   Institut Teknologi Sumatera, Satria Eko ,   Institut Teknologi Sumatera
Published: February 2021

A preliminary study on the design of a Linear Variable Differential Transformer (LVDT) sensor and a sliding potentiometer has been carried out. It is a distance measuring sensor that can be used as a ground shift sensor. This study aims to develop a new type of low cost mechanical sensor which has a high enough accuracy. The LVDT sensor is built using affordable materials such as PVC pipes, winding wires and iron cores, which is varied based on the number of primary coil and its diameter. While the potentiometer sensor is prepared by using linear bearing using electrode sheets of nickel and copper which is arranged by implemented the concept of the Newton-Wheatstone Bridge. The measurement value shows that the LVDT sensor with the number of primary coil of 110 and a diameter of 4 mm can measure with an accuracy of 0.5 mm and a range of more than 4 cm. While the sliding potentiometer using a sheet of copper electrodes can measure 0.5 mm with a range of more than 4 cm. The average error shown by the LVDT sensor and the sliding potentiometer is 5.2% and 6.4%, respectively.
Pengaruh Tegangan Tabung terhadap Kualitas Citra pada Pemeriksaan Computed Tomography Kepala menggunakan Iterative Reconstruction
Authors:   Poltekkes Kemenkes Jakarta II, Irsal Muhammad , Nurbaiti Nurbaiti ,   Poltekkes Kemenkes Jakarta II, Mukhtar Aulia Narendra ,   Rumah Sakit Pelabuhan Jakarta, Gunawati Shinta ,   Poltekkes Kemenkes Jakarta II, Hidayat Wahyu ,   Poltekkes Kemenkes Jakarta II
Published: February 2021

Iterative reconstruction can optimize radiation dose and improve image quality on CT scan. This research method is quantitative analytic with the analysis of the results of the head CT examination parameters associated with image quality to changes in variations of 80 kV, 100 kV, 120 kV with the use of iterative reconstruction. Image quality measurements are the Hounsfield Unit (HU) value, standard deviation, and Signal to Noise Ratio (SNR) using Radiant Viewers. Effective dose measurement using the Dose Length Product (DLP). Then perform the Kruskal Wallis test to find out whether there is an effect of tube voltage and Iterative Reconstruction on the SNR value using IBM SPSS version 24. The results image quality of the HU value increase due to changes in the kV value, but the value does not change significantly when the iDose changes, for the standard The deviation has decreased due to changes in kV, but the value of the value does not experience a significant change at the time of change in iDose, while SNR increases due to changes in kV value and changes in iDose. The percentage ratio of the effective dose in the use of standard kV with 80 kV decreased radiation dose by 62%, while at 100 kV there was a decrease of 25%, and the use of 120 kV experienced an increase of 25%. The results of the Kruskal Wallis test p-value <0.001, therefore it can be concluded that there is a difference in the SNR image quality at each change in iDose and kV parameters.
ANALISIS KAJIAN FAKTOR-FAKTOR YANG DAPAT MENYEBABKANKETERLAMBATAN PROYEK PADA PEMBANGUNAN JALAN TOL SERANG – PANIMBANG
Authors: Adi Santoso waskito , Purba Aleksander , Kustiani Ika
Published: February 2021

Dari analisis hasil pencapaian faktor-faktor yang dapat menyebabkan keterlambatan proyek pembangunan Jalan Tol Serang-Panimbang menggunakan indeks kepentingan yaitu berdasarkan nilai mean dari skor jawaban responden maka disimpulkan terdapat 9% kelompok faktor yang masuk kategori cukup berpengaruh  dengan  rentang nilai mean antara 2,60 sampai dengan 3,40 dan sebanyak 78% kelompok faktor yang masuk kategori berpengaruh dengan  rentang nilai mean antara 3,51 sampai dengan 4,20. Sedangkan faktor yang sangat berpengaruh dapat menyebabkan keterlambatan proyek adalah sebanyak 3%  kelompok faktor dengan  rentang nilai mean antara 4,21 sampai dengan 5,00 yaitu faktor basic design dan dokumen tender investasi yang tidak akurat sehingga terjadi perubahan-perubahan dalam perencanaan dan spesifikasi, faktor pembebasan lahan yang tidak sesuai dengan jadwal pengadaan lahan yang telah ditetapkan Pemerintah serta faktor proses pengesahan dokumen detail engineering design yang berjenjang dari BPJT berlanjut ke Direktorat Jalan Bebas Hambatan dan Perkotaan Kementerian PUPR. Hasil penelitian berdasarkan analisis faktor menunjukan faktor utama yang mempengaruhi keterlambatan proyek pembangunan Jalan Tol Serang-Panimbang terdapat pada faktor utama yang mempengaruhi keterlambatan proyek pembangunan Jalan Tol Serang-Panimbang terdapat pada faktor tenaga kerja, bahan, peralatan (equipment), serta perencanaan dan penjadwalan dengan nilai keragaman total sebesar 39,484%, kemudian faktor perubahan (change) dan karakteristik tempat dengan nilai keragaman total sebesar 12,958% dan faktor situasi dengan nilai keragaman total sebesar 8,829% serta faktor lingkup dan kontrak  yang mempunyai nilai keragaman total sebesar 6,492%.
About one surprising propertyof the simplified bending equation
Authors:   Saint Petersburg State University of Architecture and Civil Engineering, Kagan-Rosenzweig L. M.
Published: February 2021

The differential bending equation of the rod, written in terms of bending moment and taking into account compression or tension by the force of arbitrary degree of smallness, allows solving simple statically indeterminate problems without calculating the deflections. If there is no force, such possibility disappears. The proposed article examines this unusual effect. The article also examines the bending problem of the rod under condition of large displacements. Direct integration of differential bending equations is used.
Evaluation of reliability and quality indicatorsof zero cycle work production methods
Authors:   Saint Petersburg State University of Architecture and Civil Engineering, Gaido A. N.
Published: February 2021

The article analyzes various qualitative indicators typical for modern methods of constructing pile foundations and pit fencing. They are manifested to varying degrees depending on the specific engineering and geological conditions. Forecasting the effect of their implementation is a difficult task. The author has developed a method for evaluating various qualitative indicators in a single digital scale. For this purpose, V. G. Gmoshinsky`s methodical approach based on the construction of general definition tables was applied. The method meets the requirements of universality, reproducibility and reliability of the obtained conclusions.
Analysis of energy consumption of remote oil field facilities
Authors:   Saint Petersburg State University of Architecture and Civil Engineering, Ulyasheva V. M. , Ponomarev N. S. ,   Saint Petersburg State University of Architecture and Civil Engineering, Martyanova A. Yu. ,   Saint Petersburg State University of Architecture and Civil Engineering
Published: February 2021

The paper presents the analysis results of the energy consumption of oil field facilities. The expediency of using the cogeneration principle in the power systems of oil fields is substantiated. Given the vast geographical distance of oil field objects, the most rational solution of the problem, according to the authors, would be a transition to distributed energy generation.
Method of operational forecasting the residual life of the brake system elements
Authors:   Vladimir State University named after Alexander and Nikolay Stoletovs, Kirillov A. G. , Ratnikov A. S. ,   Vladimir State University named after Alexander and Nikolay Stoletovs, Kokarev O. P. ,   Vladimir State University named after Alexander and Nikolay Stoletovs
Published: February 2021

The paper considers the method of forecasting failures (replacements) of brake pads and brake discs of KIA RIO cars. At maintenance, especially when independently done by car owners, the technical condition of the specified elements is not correctly estimated, which may lead to the loss of the brake system operability and, as a consequence, to a road traffic accident. The proposed method is simple and has practical significance in the operation of cars. Determination of residual life does not require the use of expensive equipment, which indicates its availability both at service stations and in garage conditions.
Improving the level of road traffic service in large and medium-sized cities of Russia
Authors:   Saint Petersburg State University of Architecture and Civil Engineering, Solodkiy A. I. , Chernikh N. V. ,   Saint Petersburg State University of Architecture and Civil Engineering
Published: February 2021

The paper considers the problem of improving the level of road traffic services. The level of service for various categories of city streets in practice does not correspond to the values given in normative legal documents. Therefore, the task of increasing the level of service to the indicated values on the road network is urgent. Herewith, it is important to specify the object of improvement, namely, the basic street-road network, through which the bulk of the transportation correspondence is implemented, since it is there that the greatest loss of the user time occurs. An effective tool in this work is the development of a set of measures using simulation modeling aimed at improving the level of traffic services on the street-road network.
Initiative activities of the subjects of the investment and construction complex
Authors:   Saint Petersburg State University of Architecture and Civil Engineering, Egorova L. I.
Published: February 2021

The role and influence of investment and construction activities in the social and economic development of the country is indicated. In accordance with the data on the condition and development of the construction sector, its main problems, tasks and ways to solve them, as well as problems and factors affecting the subjects of the investment and construction complex, are considered. The investment and construction complex is considered as an initiative economic sphere of activity of entrepreneurial type entities, depending on the current direction of construction development, complications of tasks and management functions of investment and construction activities. In this regard, it is proposed to strengthen the integration processes in the management of investment and construction industry.
Applying social infrastructure development programs at the integrated development of territories in the Russian Federation
Authors:   Saint Petersburg State University of Architecture and Civil Engineering, Egorova M. S.
Published: February 2021

This article discusses the role of social infrastructure in the framework of integrated development of territories. Analytical data is provided on the volume of the construction market, both in the Russian Federation and within the limits of St. Petersburg. In addition, methods for solving the problem of the need to increase residential development in the context of a shortage of territories for the integrated construction of residential premises are considered. Examples are given illustrating the implementation of various programs for the construction of social infrastructure in various regions of the Russian Federation, and possible ways of interaction between developers and state authorities are outlined.
Research of target orientation of regional housing development programs
Authors:   Saint Petersburg State University of Architecture and Civil Engineering, Sbitneva D. V.
Published: February 2021

The author's view on determining the target orientation of regional programs for the development of housing construction in St. Petersburg is presented. The topicality of the study is in the research of the target audience, goals and activities of currently and previously implemented programs, which allowed identifying violations of the state strategic planning principles and revealing the cause of their occurrence. As a result, there has been worked out an approach enabling to differentiate the goals and activities of regional programs so that the main elements of mechanisms for their creation and effective implementation in the field of housing construction are specified, which allows establishing a balance between the basic needs of society, business and the state.
Improving the financing method of road construction on the basis of the life cycle contract
Authors:   Saint Petersburg State University of Architecture and Civil Engineering, Frolov V. I. , Balzanay S. V. ,   Tuvan State University
Published: February 2021

The article considers the procedure for financing of the construction of regional roads on the basis of the life cycle contract. Under the existing procedure for financing road construction projects, the main burden at the stage of the implementation is experienced by the private partner, which can lead to the risk of non-fulfillment of obligations under the contract of the road project. To reduce the level of risk, it is proposed to use phased financing of the project by the state partner, especially before the commissioning of the facility.
Influence of axial deformability of joints on the results of static calculation of the UIKSS bearing system
Authors:   Research Institute of Building Physics of Russian Academy of Architecture and Construction Sciences, Sokolov B. S. , Troshkov E. O. ,   Volga State University of Technology, Research Institute of Building Physics of Russian Academy of Architecture and Construction Sciences
Published: February 2021

The article is devoted to the problem of static calculation of the UIKSS system (universal industrial frame construction system), which is a precast reinforced concrete frame with girder-free non-accumulating floors, taking into account the axial deformability of plug joints between columns and slabs. The principle of modeling the frame in the LIRA-SAPR software package is considered and illustrated with an example, taking into account the joint stiffness parameters determined by the author’s method developed on the basis of numerical and experimental studies. The comparison and analysis of the obtained forces and displacements with and without taking into account the deformability of plug joints of columns with floor slabs is presented.
Experimental study of flexural-torsional deformations and stability of curved elements of steel arches with l-shaped cross-section
Authors:   Saint Petersburg State University of Architecture and Civil Engineering, Urazgildeev D. V.
Published: February 2021

The method and results of experimental studies of flexural and torsional displacements, as well as the stability of curved elements of steel arches with I-shaped cross-section are presented.The author presents graphs of the dependence of flexural-torsional movements on the load for three different loading schemes obtained during the experiment. The limit loads on the core elements of the arches were obtained. The results of the experiment were compared with the theoretical study.
Konya Kapalı Havzası Orman, Mera ve Tarım Alanlarının Değerlendirilmesi
Authors: ATEŞOĞLU Ayhan , ARIKAN Talha Berk , YILDIZ Saffet
Published: February 2021

Çalışma, Konya Kapalı Havza (KKH)’sının (~50000 km2) güncel
arazi örtü/kullanım sınıflarının tespiti, her bir sınıfa ait durum tespiti,
kuraklık sınıflarına göre arazi örtü/kullanım sınıflarının durumu, arazi
değişimlerinin yönü ve eğilimlerinin belirlenmesine yönelik veri üretmek
amacıyla gerçekleştirilmiştir. Çalışmada kullanılan yöntem amaca uygun arazi
izleme ve değerlendirme amaçlı Collect Earth yöntemidir. Açık kaynaklı ve
ücretsiz olan Collect Earth yazılımında görsel ve grafik değerlendirmeler için
yüksek ve orta çözünürlüklü uydu görüntü verileri (Google Earth, Bing maps,
Yandex maps, Google Earth Engine vb. üzerinden) entegre olarak kullanılmıştır.
SAIKU isimli istatistik programı yardımıyla veri analizi ve rakamsal sonuç
verilerine ulaşılmıştır. Çalışma sonucunda, 2018 yılı itibari ile arazi kullanım
dağılımları; Tarım %45,77, Orman %5,18, Mera %20,86, Diğer %21,70, Su %4,03 ve
Yerleşim %2,46 olarak tespit edilmiştir. Kuraklık sınıflarına göre arazi
kullanım dağılımları incelendiğinde arazi kullanımlarının %53,31 “yarı kurak”
sınıfta yer almaktadır. Yarı kurak sınıf içerisinde ise en büyük arazi kullanım
sınıfı (1,24 milyon ha) tarım sınıfıdır. Konya kapalı havza içerindeki toplam
tarım alanlarının %35,98’i sulanan tarım alanlarıdır. KKH’nın %9,40’ı ağaçla
kaplı alanlar içerisinde yer almaktadır. Arazi kullanım değişimleri
incelendiğinde, 2000-2018 yılları arasında en büyük artış 20521 ha ile tarım
sınıfında yaşanmıştır. Genel olarak değişim yönü ‘diğer’ arazi sınıflarından
‘tarım’ arazi sınıfına doğru gerçekleşmiştir. Gerçekleştirilen çalışma gerek tematik
harita gerekse rakamsal verileri ile KKH için yapılacak altlıklara güncel veri
sağlayacaktır.