bluuebunny/crossref_metadata_2025 huggingface dataset:
Hong Kong University Students’ Normative Beliefs about Aggression toward Police: The Role of Ecological Risks and Future Perspective
Authors: Li Jian Bin , Finkenauer Catrin
Published: January 2021

Ample social protests occurred in Hong Kong during 2019-2020 to achieve various political goals. One of the goals was to require an investigation of police’s excessive and brutal enforcement while handling the protests. University students were actively involved in the protests. Normative beliefs about aggression toward police (NBAGG→P) play an important role in students’ behavior during the protests. In this cross-sectional study, we quantified NBAGG→P among Hong Kong university students (N=1,025) and examined the associations between NBAGG→P and multiple ecological risks (i.e., distrust in institutions, exposure to community violence, poor family monitoring, poor university discipline and affiliation with delinquent peers). Moreover, we examined the protective and buffering role of future orientation. The results showed that about 78.6% students had participated in social protests and about 35.4% of them had engaged in aggressive acts during protests. Students reported medium levels of NBAGG→P, and NBAGG→P was positively related to participation in social protests and use of aggression during protests. Except for poor family monitoring, other ecological risks were related to higher levels of NBAGG→P. Moreover, a positive future orientation was related to lower levels of NBAGG→P. Future orientation moderated the link between distrust in institutions and NBAGG→P. The relation was stronger for students with a more positive future orientation than those with a less positive future orientation. These findings offer insights in understanding young people’s aggressive attitude and promoting positive social participation.
To Be Attentive, Do Not React: Linking Dispositional Mindfulness to Attentional Networks and Vigilance Performance
Authors: Cásedas Luis , Marti Ausias Cebolla , Lupiáñez Juan
Published: January 2021

Objectives: Research addressing the relationship between dispositional mindfulness and objective attention performance remains inconclusive, partly because previous studies used sample sizes possibly leading to underpowered designs. Here, we examined this relationship in a large sample using the ANTI-Vea: a novel cognitive-behavioral task that simultaneously assesses the classical attentional networks—phasic alertness, orienting, executive control—and both the executive and arousal components of vigilance.Methods: Two hundred nineteen meditation-naïve participants completed the study. Correlational analyses using Kendall’s Tau were performed between FFMQ scores and ANTI-Vea outcomes. Additional subsidiary correlations were performed between the FFMQ and two self-report measures assessing subjective attentional control and mind-wandering. Benjamini-Hochberg was applied to control the Type I error rate. The hypotheses and plan of analyses were preregistered at the Open Science Framework.Results: Higher non-reactivity predicted overall faster reaction times and higher accuracy in attentional networks trials. Higher non-reactivity, as well as higher FFMQ total score, predicted faster reaction time and fewer lapses in arousal vigilance trials, the latter also being negatively associated with describe scores. The magnitude of the correlations ranged from τb = .103 to τb = .119. We found no association between FFMQ scores and executive control or executive vigilance.Conclusions: Our results indicate that dispositional mindfulness is linked to improved global attentional and arousal vigilance performance, being non-reactivity to internal experience the key facet driving the association. The absence of association to executive processes is discussed based on the high cognitive demands of the ANTI-Vea task.
Faktor Pendorong dan Penghambat Implementasi Kebijakan Pusat Kontrol Penegakan Pelanggaran Elektronik Lalu Lintas
Authors: Prabawa Panji Gedhe , Warsono Hardi , Hayu Dwimawanti Ida
Published: January 2021

This research explains the driving and inhibiting factors and has the aim to describe and analyze the driving and inhibiting factors in implementing E-ticketing policy in Semarang City. This research was prepared using qualitative methods that describe the phenomenon of policy implementation such as: communication, resources, disposition and bureaucratic structure. The results showed the implementation of the E-Traffic Policy in Semarang City in 2019 had not been going well and was fast overall. This aspect can be seen from: policy communication is not going well, the implementer does not need approval and the community lacks information on how E-Tilang is implemented. Public policy resources that have been published, human resources, authority, infrastructure, information resources and authority, but still not optimal. Aspects related to good employee relations, do not yet exist in the public bureaucracy do not yet support. The driving factors are leadership support, adequate resources, staff readiness, and community support. The inhibiting factor is the need for time to determine policy, fragmentation, community misunderstanding and wrong perception.
Faktor-Faktor yang Mempengaruhi Keterlambatan Rekapitulasi Penghitungan Suara pada Pemilu Tahun 2019
Authors: Permana Dana , Nasution Muhammad Arif , Siregar Arifin Saleh
Published: January 2021

The delay in recapitulation of vote counts in Deli Serdang Regency during the 2019 Election caused disruption to the process at the stage of election implementation at the North Sumatra Province level, even though based on the 2019 Election stages the delay did not interfere with the national recapitulation process. However, on a regional and local scale this can lead to public distrust of the performance and integrity of the KPU and in the end it can lead to the emergence of local scale conflicts among election participants who are both anxiously awaiting the vote count results. From the results of the research that the author conducted to see the delay in recapitulation of vote counts in Deli Serdang Regency in the last 2019 Election. The author uses the assumption to test that the delay is caused by 3 factors, namely the election organizer integrity factor, the workload factor and the election organizer competency factor
Pelaksanaan Fungsi Pengawasan Pada Kampanye Pemilihan Kepala Daerah
Authors: Turnip Ery Lilik Suryani , Paskarina Caroline , Manan Firman
Published: January 2021

This paper examines the supervisory function of Election Supervisory Board (Bawaslu) in the 2018 West Kalimantan Governor and Vice Governor election, particularly in campaign administration. The campaign period in electoral cycle is one of the key stages in political contestation that it is vulnerable to malpractices, moreover it involves many parties and masses. The campaign malpractices that often occur are administrative irregularities, involvement of civil servants, and money politics. This paper employed a descriptive qualitative method by using data that were collected through interview and document study during the period October - December 2019. The results of this research revealed that in carrying out the supervisory function, the West Kalimantan Election Supervisory Board carried out malpractices prevention and enforcement which synergize with supervision of the district/city to sub-district/village levels. By emphasizing on the prevention function, the West Kalimantan Election Supervisory Board arranged supervisory design built upon potential vulnerability, which based on sub-stages and regions, conducted socialization intensively in the community, and coordinated with the stakeholders. Meanwhile, in the enforcement function, the West Kalimantan Election Supervisory Board cooperated with General Election Commissions (KPU), police and prosecutors.
Analisis Collaborative Governance Dalam Penerapan Elektronik Kesehatan (E-Kes) Di Kabupaten Bengkulu Tengah
Authors: Triyanto Deni , Efendi Soehito , Puspita Veny
Published: January 2021

The purpose of this research is to analyze collaborative governance in the application of e-kes in Bengkulu Tengah Regency, using descriptive qualitative research methods with indicators of network structure, commitment to a common purpose, trust among the participants, and access to resources ". Data collection techniques through interviews, observation and documentation. The informants of this research are the Secretary of the Bengkulu Provincial Office, the Regency and the authorized officials, policy implementers, the Head of the Puskesmas, and the Puskesmas Operators. The results of the study revealed that the network structure on the collaboration in implementing E-Kes is quite good, such as the development of authority and authority among stakeholders, both from health centers, hospital hospitals, district health offices and Bengkulu Province health offices, commitment to a common purpose, stakeholder commitment is quite good, trust among The participants said that the trust among stakeholders was not good because the infrastructure for implementing e-kes was not supportive, the access to information technology resources involved was not optimal at the health center level. The conclusion is that the collaboration in implementing e-kes in Bengkulu Tengah Regency is not optimal because several indicators still find problems in its application.
Evidence of Dental Lamina Preservation in the Development of Mice First Molars
Authors: Pretel Hermes , Hetem Sebastião , Prata Celina Antônio , Galassi Marlei Seccani , Oliveira Ramalho Lizeti Toledo , Pretel Hermes
Published: January 2021

The aim of this work was to analyse the behaviour of the dental lamina during the development process of
first molar teeth. The offspring of female mice were analysed at the 16th day of intra-uterine life and since
birth till 17 days old with the aim to evaluate the dental lamina evolution of upper and lower first molars.
The animals were sacrificed, and the heads embedded in paraffin in order to get frontal or sagittal sections
whose were stained by hematoxylin and eosin method. The results showed a very clear presence of the
dental lamina in all periods under analysis, without the occurrence of its disorganization, in other words, it
was permanently connecting the developing tooth germ to the oral epithelium until advanced dental
eruption.
STUDENT REPRESENTATIONS ON THE USE AND INFLUENCE OF ICT IN THE ENGINEERING STUDY
Authors:   Universidad de la Defensa Nacional, Facultad de Ingeniería del Ejército, Escuela Superior Técnica Grl. Div. Manuel N. Savio, Av. Cabildo 15 (C1426AAA), C.A.B.A., Argentina., Miná V. , Romeo F. ,   Universidad de la Defensa Nacional, Facultad de Ingeniería del Ejército, Escuela Superior Técnica Grl. Div. Manuel N. Savio, Av. Cabildo 15 (C1426AAA), C.A.B.A., Argentina., Travieso S. ,   Universidad de la Defensa Nacional, Facultad de Ingeniería del Ejército, Escuela Superior Técnica Grl. Div. Manuel N. Savio, Av. Cabildo 15 (C1426AAA), C.A.B.A., Argentina., Silvestre M. ,   Universidad de la Defensa Nacional, Facultad de Ingeniería del Ejército, Escuela Superior Técnica Grl. Div. Manuel N. Savio, Av. Cabildo 15 (C1426AAA), C.A.B.A., Argentina., Otero L. ,   1 Universidad de la Defensa Nacional, Facultad de Ingeniería del Ejército, Escuela Superior Técnica Grl. Div. Manuel N. Savio, Av. Cabildo 15 (C1426AAA), C.A.B.A., Argentina. 2 Centro de Investigaciones en Láseres y Aplicaciones (CEILAP), UNIDEF (CITEDEF - CONICET), Juan Bautista de La Salle 4397 (B1063ALO), Villa Martelli, Buenos Aires, Argentina.
Published: January 2021

This work presents the initial findings of the research “Self-regulated learning in Engineering students from the Army Engineering College (FIE)”. The sample of this study was made up of students from the 2016 cohort. Zimmerman’s cyclical model of “self-regulation of learning” is the main theoretical reference of this research since it allows the understanding of the processes that take place in the control of: thoughts, feelings, motivations and actions to achieve the learning objectives. It was found that for the achievement of this self-regulation in their learning a resource that they use as academic support is Information and Communication Technologies (ICT). Access to the same YouTube channels and websites is similar among students. The interviewees unanimously mentioned a distinctive human trait of this faculty: the closeness and familiarity in the treatment between teachers and students. This trust is what drives them to interact freely with their teachers and allows them to raise questions and concerns through different communication channels. In summary, human communication and the effective presence of teachers enhance the use of ICTs, since they ultimately provide feedback and benefit students in accessing comprehension strategies that contribute to their academic self-regulation.
Strategi Pemerintah Dalam Menyetarakan Hubungan Tauke di Desa Malang Rapat Kabupaten Bintan
Authors: Yennita Yennita , Samin Rumzi , Prastya Imam Yudhi
Published: January 2021

Kemiskinan nelayan didesa Malang Rapat menjadi fenomena yang umum yang banyak terjadi. Dalam keadaan seperti ini, sebagian nelayan membutuhkan keadaan tauke yang memiliki modal yang besar. disitulah terjadinya hubungan patron klien. Penelitian ini bertujuan untuk mengevaluasi starategi pemerintah untuk mengatasi hubungan patron klien (studi kasus hubungan nelayan dengan tauke Desa Malang Rapat Kabupaten Bintan). Teori yang digunakan dalam penelitian ini menggunakan Evaluasi Kebijakan William N. Dunn yang menyatakan bahwa untuk mengukur keberhasilan suatu evaluasi program dapat diukur melalui 6 variabel yaitu Efektivitas, Efisiensi, Kecukupan, pemerataan, responsivitas, ketepatan. Penelitian ini menggunakan metode jenis deskriptif dengan penekatan kualitatif. Informan dari penelitian ini Dinas perikanan Kabupaten Bintan, kepala desa Malang Rapat, Ketua kelompok nelayan,sekretaris kelompok nelayan, masyarakat lokal/nelayan dan tauke. Teknik analisis data dilakukan dengan cara pengumpulan data, penyajian data, penarikan kesimpulan dan verifikasi data. Hasil dari penelitian ini bahwa strategi pemerintah untuk mengatasi hubungan patron klien di Desa MalangRapat adalah: 1. Efektivitas para penerima bantuan sangat memberikan mamfaat besar bagi nelayan karena bisa meningkatkan hasil tangkapannya dan bisa membantu keuangan keluarga. 2. Efisiensi yaitu mengenai anggaran bantuan. Pemerintah memiliki anggaran dan berwewenang untuk memenuhi kebutuhan nelayan. 3. Kecukupan bahwasanya masyarakat sangat terbantu dengan adanya bantuan, akan tetapi kurangnya dalam Sumber Daya Manusia (SDM). 4. Perataan yaitu pemerataan penyaluran bantuan ini belum bisa dikatakan efektif,karena masih ada masyarakat nelayan yang belum menerima bantuan. 5. Responsivitas yaitu respon masyarakat nelayan sangat positif adanya bantuan dan mendukung, peduli, dan memahami dengan baik tujuan bantuan tersebut. 6. Ketetapan yaitu program bantuan ini tepat untuk dijalankan karena tujuan dari program ini sangat bernilai untuk pengetasan kemiskinan bagi masyarakat nelayan. kesimpulannya hubungan patron klien tidak dapat diputuskan begitu saja, karena hubungan turun temurun antara tauke dan nelayan. namun hubungan tersebut dapat di kurangi dengan bantuan-bantuan yang telah di berikan oleh pemerintah.
REPRESENTASI POLITIK DALAM FENOMENA KONFLIK GOA PINDUL DI KABUPATEN GUNUNG KIDUL
Authors: Harirah Zulfa , Muhamad Muliawan La Ode , Fatkhurrohman Mochammad
Published: January 2021

Wisata Goa pindul menawarkan berbagai keindahan alam di sepanjang aliran sungai bawah tanah yang didalamnya terdapat stalaktit dan stalamit yang menjadi panorama menakjubkan bagi para pengunjungnya. Sering waktu, objek wisata Goa Pindul berubah menjadi kawasan wisata yang menjanjikan keuntungan. Namun, tidak semua pihak memiliki peluang yang sama untuk memperoleh pendapatan, sehingga ketidakadilan dalam “bagi-bagi kue” ini lah yang menjadi salah satu penyebab konflik berkepanjangan. Goa Pindul menyingkap banyak  perdebatan terkait siapa pihak yang paling berhak mengelola dan mengapa berhak mengelola. Penelitian ini merupakan penelitian kualitatif dengan pendekatan studi kasus. Melalui teori representasi dari Hannah Pitkins, tulisan ini akan mengkaji mengenai pemetaan representasi politik berdasarkan 4 hal yaitu identifikasi agen, konstituen, kepentingan yang diwakili dan juga responsivitas. Hasilnya diperoleh bahwa fenomena yang terjadi di Goa Pindul yaitu keterlibatan Atik Damayanti justru memperlihatkan hal yang berbeda dari konsep yang ditawarkan oleh Hannah Pitkin. Agen tidak selamanya ditentukan atau ditujukan untuk membela kepentingan konstituen tetapi tindakan agen justru ditentukan atau ditujukan untuk memperjuangkan kepentingan elit itu sendiri dan keluarganya.
UPAYA PEMERINTAH KABUPATEN KULON PROGO DALAM PENGENDALIAN TEMBAKAU
Authors: Dewanti Mike , Priyo Purnomo Eko , Nur Kasiwi Aulia
Published: January 2021

Industri tembakau memang mampu memberikan dampak ekonomi yang baik berupa pendapatan negara dari cukai yang tinggi. Namun, disisi lain industry tembakau yang terus melesat mampu mempengaruhi meningkatnya konsumsi masyarakat terhadap tembakau maupun produk turunannya seperti rokok. Hal tersebut tentunya akan memberikan dampak yang buruk bagi kesehatan. Maka dari itu, pemerintah perlu melakukan berbagai upaya guna mengendalikan konsumsi tembakau. Penelitian ini akan berfokus pada bagaimana upaya yang dilakukan pemrintah Kabupaten Kulon Progo dalam pengendalian tembakau. Penelitian ini menggunakan metode kualitatif dengan pendekatan analisa deskriptif. Peneliti menggunakan metode analisa deskriptif, yaitu suatu analisa yang dimaksudkan untuk menjelaskan data dari satu variabel yang diteliti. Dari hasil penelitian diperoleh informasi bahwa upaya yang telah dilakukan Pemerintah Kabupaten Kulon Progo dalam pengendalian tembakau meliputi penerapan kawasan tanpa rokok, penyediaan tempat khusus merokok, pengendalian iklam, promosi dan sponsor dari produk tembakau, dan mengajak masyarakat untuk berperan serta dalam pengendalian tembakau.
KETERWAKILAN POLITIK PEREMPUAN KEPULAUAN
Authors: Nazaki Nazaki , Putri Nur.A.Dwi
Published: January 2021

Keterwakilan politik perempuan di daerah kepulauan dalam ranah demokrasi yaitu dalam wujud keterwakilan sebagai anggota legislatif tidak kunjung memenuhi kuota 30% seperti yang diharapkan oleh pemerintah. Dengan jumlah pengguna hak pemilih perempuan yang berjumlah setengah dari total jumlah penggunak hak pemilih ternyata tidak menjamin caleg-caleg perempuan untuk dapat lolos menjadi anggota legislatif. Hal ini lah yang mendasari peneliti untuk mencari alasan atau factor mengapa para pengguna hak pemilih perempuan tidak menggunakan hak pilihnya untuk memilih caleg perempuan serta sampai dimana pemahaman para pengguna hak pemilih tentang peluang kuota 30% perempuan untuk dapat terlibat di dalam politik. Dipilihnya Propinsi Kepualauan Riau sebagai lokasi penelitian di latarbelakangi oleh factor geografis kepulauan yang masih identik dengan keterbatasan akses dan informasi serta Propinsi Kepulauan Riau termasuk salah satu propinsi di Indonesia yang tidak mengalami kemajuan signifikan dalam hal jumlah keterwakilan perempuan yang duduk di lembaga legislatif dalam hal ini adalah DPRD Propinsi. Selain itu Penelitian ini menggunakan metode penelitan Kuantitatif yang jarang digunakan oleh penelitia sebelumnya yang sama-sama mebahas tentang keterwakilan perempuan. Hasil dari penelitian ini menunjukkan bahwa para pengguna hak pemilih perempuan tidak menggunakan hak pilihnya dikarenakan minimnya pengetahuan akan politik itu sendiri akibat kurangnya sosialisasi dan  minimnya kondisi geografis dan infrastruktur.
Jurnal lengkap tahun 2009, volume 1, nomor 1
Authors: Accounting Ultima
Published: January 2021

Teks lengkap
Jurnal lengkap tahun 2010, volume 2, nomor 2
Authors: Accounting Ultima
Published: January 2021

Teks lengkap
PSEUDOTENSOR FORMULATION OF THE MECHANICS OF HEMITROPIC MICROPOLAR MEDIA
Authors: Radayev Yu.N. , Murashkin E.V.
Published: January 2021

The possibility of applications of relative tensors concepts to the mechanics of micropolar continuum and, in particular, for the hemitropic micropolar continua is considered. The fundamental tensors and orienting relative scalars in three-dimensional space are introduced. Permutation symbols and absolute Levi-Civita tensors are investigated in further details. Algebraic and differential properties of the relative tensors are discussed. The weights of the fundamental kinematic tensors are determined. The wryness tensor and the asymmetric strain tensor are constructed in terms of the vectors of micro-rotation and displacements. Notions of force and couple traction vectors, associated force and associated couple stress vector, force and couple stresses tensors are discussed in the frameworks of relative tensors algebra. The weights of the basic micropolar elasticity tensors are determined and discussed. The constitutive form of the micropolar elastic potential is introduced as an absolute scalar in order to obtain micropolar constitutive equations. In the linear case, the elastic potential is a quadratic form whose coefficients are pseudoscalars. The weights of the constitutive pseudoscalars are calculated. The dimensionless constitutive micropolar constants and constitutive constants with physical dimensions are discriminated. Statics and dynamics of micropolar elastic continua are developed in terms of relative tensors. Dynamic equations involving displacements and microrotations in the case of semi-isotropic (hemitropic) symmetry are derived and represented by the pseudotensor technique. The paper can be considered as a script of fundamental formulas and concepts related to the algebra and differentiation of relative tensors of arbitrary rank.
MEASURING THE DYNAMIC POISSON'S RATIO OF WOOD WITH THE USE OF A RADIO INTERFEROMETER
Authors: Balandin V.V. , Balandin Vl.Vl. , Lomunov A.K. , Parkhachev V.V.
Published: January 2021

A new method is proposed for determining the dynamic Poisson's ratio of both isotropic and anisotropic materials. The sample was loaded with a pulsed compressive load on a setup that implements the Kolsky technique using a split Hopkinson bar. The development in time of the longitudinal compressive deformation of the sample was determined by the signals recorded with the help of low-base strain gauges glued to the measuring bars. A millimeter-wave interferometer was used to measure the development of the radial components of the sample deformation in time. To assess the possible asymmetry of the radial expansion of the sample, measurements were carried out using two independent channels irradiating diametrically opposite zones of the lateral surface of the sample. The tests were carried out on a sample of pine with air humidity in the form of a cylinder 54 mm in diameter and 30 mm in height. A pulsed compressive load was loaded along the fibers. Using two channels of the radio interferometer, the separate displacement of the lateral surfaces of the sample was recorded both along and across the annual layers. It was determined that the displacements of the regions of the lateral surface of the sample during expansion along the annual layers are quite close, while during expansion across the annual layers they are very different. The relative transverse deformation of the sample in both cases was determined as the sum of lateral displacements divided by the sample diameter. As a result, two components of the dynamic Poisson's ratio were obtained, which amounted to ~0.2 (in the direction along the annual layers) and ~0.24 (in the direction across the annual layers).
FINITE ELEMENT METHOD FOR NUMERICAL MODELING OF ELASTIC-PLASTIC DEFORMATION OF WOOD UNDER SHOCK LOADING
Authors: Bezhentseva M.V. , Vutsin L.I. , Kibets A.I. , Kruszka L.
Published: January 2021

The 3D problem of wood deformation under shock loading is considered. The governing system of equations is formulated in Lagrange variables. A defining system of equations in a three-dimensional formulation is presented. The equation of motion is derived from the balance of the virtual powers of work. Wood is modeled as a unidirectionally reinforced material with a description of the descending branch of the deformation diagram. Deformations and stresses are determined in a local basis, the position of which in space is related to the direction of the wood grain. Wood material is represented as a combination of reinforcing fibers and a matrix, the elastoplastic deformation of which is described by the relations of the theory of flow with combined kinematic and isotropic strengthening. The deformation characteristics of the matrix and fibers are determined on the basis of a computational and experimental study of the mechanical properties of wood along and across the fibers. In numerical simulation, the moment scheme of the finite element method and an explicit time integration scheme of the “cross” type are used. Discretization of the computational domain is based on an eight-node isoparametric finite element adapted to the specifics of the problem under consideration. Software realization of the developed mathematical model and numerical methodology is implemented within the computing complex “Dynamics-3”. Computer simulation of compression of an experimental specimen of spruce along and across the fibers has been performed. The reliability of the calculation results is confirmed by good agreement with the experimental data.
COMPREHENSIVE STUDY OF THE PROPERTIES OF FINE-GRAINED CONCRETE UNDER DYNAMIC TENSION AND SHEAR
Authors: Gonov M.E.
Published: January 2021

An experimental study of the dynamic properties of fine-grained concrete under tensile and shear stresses has been carried out. A comprehensive study of the dynamic properties of concrete allows obtaining experimental data and constants. These data and constants are needed to equip dynamic strain and fracture models. The system of experiments is based on modifications of the Kolsky method. This system of experiments allows one to determine a wide range of strength and time characteristics of concrete under shock loading. The experimental setup according to the Kolsky method includes a system of measuring rods between which a test sample is installed, a gas gun for accelerating a cylindrical striker, strain gauges, a speed meter, recording and computing equipment with a software package. Conducted dynamic tests of concrete in a wide range of deformation rates (102–104 s–1). In experiments on direct tension and to determine the ultimate tensile stress of fine-grained concrete during splitting, two speed modes are implemented. In tests of shear strength, a modification of the Hopkinson split bar method was used to determine the dynamic shear strength, in which a sample made of the material under study is located in a rigid holder cut at an angle to the sample axis. The pulse recorded in the reference dipstick is used to plot the shear stress in the sample over time. Shear tests were carried out for three speeds. The results of the performed experiments on tensile, splitting and shearing are presented in the form of diagrams of stress versus deformation and stress versus time. The obtained characteristics can be used to equip computational experiments in the study of the strength of concrete structures subjected to dynamic influences.
THE EXPERIMENTAL-THEORETICAL METHOD FOR FINDING ELASTIC MODULES OF RUBBER-LIKE MATERIALS BASED ON THE VERASONICS ACOUSTIC SYSTEM
Authors: Demin I.Yu. , Lisin A.A. , Spivak A.E. , Gurbatov S.N. , Pronchatov-Rubtsov N.V.
Published: January 2021

The experimental-theoretical method for determining the elastic characteristics of rubber-like materials is presented. This method is founded on the technology SWEI (Shear Wave Elasticity Imaging) with using the open architecture Verasonics speaker system that implements a method for generating and measuring shear wave velocity in rubbery media. The SWEI method makes it possible to measure the shear wave velocity (and, accordingly, elastic characteristics: Young's and shear modules) in soft biological tissues and finds application in medical diagnostics – shear wave elastography. The results of measuring the elastic characteristics of rubber-like media are presented. For physical modeling, polymer CIRS phantoms (Model 049 Elasticity QA Phantom Spherical) were used as measurement media. Young's modules of different types of polymer calibrated phantom measured on the Verasonics acoustic system are comparable with the tabular values. Numerical modeling of the evolution of shear waves in rubber-like media is carried out. Numerical analysis was performed using the k-Wave programming package. This programming package is based on k-space transition, where spatial gradients are computed using a Fast Fourier Transform scheme and temporal gradients are computed using a corrected k-space difference scheme. The k-Wave programming package combines the optimization of the MATLAB programming environment for working with matrix operations and a set of tools that allows you to simulate an ideal (non-dissipation) propagation environment using parameters such as density and sound velocity for a given rubber-like material. The combination of these factors allows you to model 2D and 3D spaces while maintaining high computational speed. For polymer CIRS phantoms, the results of physical and numerical modeling are compared to determine the elastic characteristics of rubber-like media.
DETERMINATION OF NONLINEAR STRENGTH CHARACTERISTICS OF SANDY SOIL BASED ON THE GRIGORYAN SOIL MODEL
Authors: Dyanov D.Yu. , Kotov V.L.
Published: January 2021

Verification of nonlinear functional dependences of the Grigoryan soft soil medium model that characterize the soil resistance to shear deformation – i.e., the dependences of the yield strength on pressure and the shear modulus on density, is carried out. The equations of the Grigoryan soil environment model are modified to account for the variability of the shear modulus. An example of numerical implementation of the obtained equations in Lagrange variables based on the technology of integrating user material into the dynamic strength module of the LOGOS software package is given.An analytical solution is obtained that represents the loading path in the element of the ground medium on the plane of the main stresses during loading and unloading under uniaxial deformation. The linear dependence of the yield strength on pressure and the linear dependence of the shear modulus on density were assumed. It was assumed that the volume compressibility curves for loading and unloading are known. Calculations are performed and a good correspondence between the results of numerical calculations and the analytical solution is shown. Calculations are performed showing the influence of the parameters of the pressure-dependent yield strength and the density-dependent shear modulus on the loading curve on the plane of the main stresses.The parameters of nonlinear functional dependences of the Grigoryan model of the soil environment are determined on the example of known experimental data on the deformation of a sample of dry sandy soil in a bounding cage using The Hopkinson split rod system and the Kolsky method. A fractional-rational dependence of the yield strength on pressure and a bilinear dependence of the shear modulus on density were assumed. It is shown that the use of linear dependencies allows us to obtain a correspondence of the calculation results with experimental data only in special cases with the appropriate selection of parameters. The use of a nonlinear dependence of the yield strength on pressure with a single set of parameters provides a good agreement with the experimental data of various authors for stresses up to 125 MPa.
STRESSED STATE IN EDGE ZONE OF CYLINDRICAL SHELLS BASED ON A NON-CLASSIC THEORY WITH THE PIEZOELECTRIC EFFECT
Authors: Firsanov Val.V. , Nguyen L.H.
Published: January 2021

Based on the refined theory in this paper presents the stress-strain state of cylindrical shells taking into account the piezoelectric effect. The mechanical displacements and electrical potentials of the shell are approximated by polynomials in the normal coordinate two degrees higher in relation to the classical theory of the Kirchhoff-Love type. The equations of the theory of elasticity and the laws of electrostatics are used to obtain model of electroelasticity behavior. By using Lagrange variational principle a system of differential equations of equilibrium in displacements and potentials with boundary conditions is derived. Trigonometric Fourier series in the circumferential coordinate is used to reduce partial differential equations system to ordinary differential equations. The formulated boundary value problem of the electroelastic state of the shell is solved by an operator method based on the Laplace transform. Transverse normal and tangential stresses of the linear equilibrium equation of the three-dimensional theory of elasticity.

Examples of calculating the stress state of a cylindrical piezoelectric shell with clamped support are provided. Two cases are analyzed: the shell is under the influence of mechanical loads and electrical potentials. A comparison of the results obtained according to the proposed theory and the classical theory is carried out. It has been established that there is an additional stress state of the "boundary layer" type. It allows to confirm the practical value of the developed mathematical model and a significant contribution to the general stress-strain state with the strength and durability of cylindrical shells modeled elements of mechanical engineering structures taking into account the piezoelectric effect.
NUMERICAL MODELLING OF DYNAMIC RESPONSE OF A PARTIALLY SATURATED POROELASTIC HALF-SPACE IN CASE OF A LOAD ACTING INSIDE A CUBIC CAVITY
Authors: Petrov A.N. , Grigoryev M.V.
Published: January 2021

Computer modeling based on the boundary element method is performed for the problem of loading in terms of the Heaviside step function inside a cubic cavity located in a partially saturated poroelastic half-space. A poroelastic medium is represented by a heterogeneous material-based model consisting of an elastic matrix phase and two phases of fillers – liquid and gas filling the pore system. The material model corresponds to a three-component medium. The constitutive relations of poroelastic medium written in terms skeleton displacements and pore pressures of fillers are considered. The original initial-boundary value problem is reduced to a boundary value problem by using the formal application of the Laplace transform. The research technique is based on the direct approach boundary integral equations of 3D isotropic linear theory of poroelasticity. Boundary integral equations corresponding to the boundary value problem are solved by the boundary element method in combination with the collocation method. In this study 8-noded elements have been adopted to discretize the boundary of poroelastic half-space. It is assumed that the element is linear with respect to displacements and pore pressures, while only one central node is used to represent tractions and fluxes. Algorithms for eliminating singularities, decreasing the order and subdividing elements are employed to compute the integral coefficients of a discrete analogue of the boundary integral equation. Regular integrals are calculated using the Gauss quadrature formula. The solution in time is obtained by numerical inversion of the Laplace transform. The numerical inversion method relies on quadrature formulas for computing the convolution integral. The time dependences of unknown displacement functions and pore pressures at points on the surface of the half-space and the cavity are plotted. The corresponding graphs are given. The influence of the cavity depth and degree of saturation on dynamic responses is investigated. The solution obtained by using the model of a fully saturated poroelastic material is compared to that of partially saturated poroelastic material. It is noted that the model used for solving this problem leads to an underestimation of displacement and overestimation of pore pressure estimates.
The Implementation of Weighted Products in the Support System of Scholarship Acceptance Decisions at the MA AL-Falahiyah AL-Asytari
Authors: Septarini Ri Sabti , Taufiq Rohmat , Fattah Saiman Al
Published: January 2021

Scholarships are a form of appreciation given to individuals in order to continue their education to a higher level. The scholarship program held to ease the burden on students in pursuing a period of study. Especially in matters of cost. MA Al-Falahiyah Al-Asytari organizes a scholarship program for students based on criteria determined by the school. The need for a scholarship naming decision system is one of the core needs so that the selection of scholarship acceptance is more objective and practical. Development of a Decision Support System (DSS) using the Weighted Product model chosen because it was able to select the best alternatives from several alternatives and their advantages in weighting techniques. In designing the system using Unified Modeling Language (UML) and making applications using PHP and MySQL as a database. From the research the authors have described, it  concluded that the weight product method could use as one method in developing a decision support system for scholarship recipients at the MA Al-Falahiyah Al-Asytari, by inputting data from students who submit scholarships to calculating grades based on criteria which specified.
Implementasi Sistem Informasi untuk Pemantauan dan Evaluasi Efektivitas E-Learning
Authors: Nurlaila Farida , Riyanto Joko , Nugroho Fajar Agung
Published: January 2021

This study discusses the monitoring and evaluation of e-learning activities through the LMS (Learning Management System) application of Pamulang University. In the previous process, the system used could only display activities carried out by lecturers that were recorded in the e-learning log. The logs that are displayed only create, update, delete activity, and cannot provide information about the effectiveness of online learning. Other parameters are needed to measure the effectiveness of online learning. One of them is the number of activities lecturers have to do for each subject within a certain period. In each course, the lecturer activity frequency is called create. Create is intended to open discussion topics by providing questions and responses to students' answers. From the results of monitoring, the achievement of creation is not sufficient to determine the success of implementing e-learning at Pamulang University. So that several other restrictions are needed such as participation, intensity, and content suitability. However, problems that occur in other parameters cannot be monitored just by looking at the data from the e-learning log. From these problems, a visual presentation of the activities of lecturers and students is needed which allows Study Programs with low percentages to be identified as quickly as possible, and decision making can be determined. The results showed that the four parameters can be implemented in the system. The average value of student participation in discussion forums is 74.99%, the ratio of the intensity of the activeness of lecturers and students every day of the week during the implementation period is 49.40%. Then the content suitability obtained an average of 0.04% and an average value of 65.90% lecturer activity. The generating facility automatically shows the four parameters in cooperation with the final result considered to assess the effectiveness of e-learning.
Rancang Bangun Aplikasi Sistem Pakar Berbasis Android untuk Identifikasi Penyakit pada Gigi dengan Menggunakan Metode Forward Chaining
Authors: Limantono Johan , Tanamal Rinabi
Published: January 2021

Teeth are an important part of the body in the digestive process. As a start of the digestive process, teeth receive various kinds of food conditions such as sweet, cold, hard foods, and so on. These food conditions affect dental health so that when teeth are not treated they become vulnerable to disease. Society in general does not pay attention to pain in the teeth. Though the pain in the teeth can be caused by diseases such as dental caries, tartar, and others. The solution of this research is manifested in the form of an expert system to diagnose dental diseases using the Android-based Forward Chaining method. The expert system application used by researchers is McGoo. The purpose of this expert system is to help the public get information and carry out a diagnosis of dental disease independently. Users only need to answer the questions displayed by the system to get the results of the diagnosis in the form of the type of illness and treatment solutions that can be done. The results of the system diagnosis have been tested and validated by experts namely dentists who are the source of information and data. Based on the accuracy of the system diagnostic test results are by the results of the expert diagnosis.
Implementasi Deep Learning Menggunakan Metode CNN dan LSTM untuk Menentukan Berita Palsu dalam Bahasa Indonesia
Authors: Kurniawan Antonius Angga , Mustikasari Metty
Published: January 2021

This research aims to implement deep learning techniques to determine fact and fake news in Indonesian language. The methods used are Convolutional Neural Network (CNN) and Long Short Term Memory (LSTM). The stages of the research consisted of collecting data, labeling data, preprocessing data, word embedding, splitting data, forming CNN and LSTM models, evaluating, testing new input data and comparing evaluations of the established CNN and LSTM models. The Data are collected from a fact and fake news provider site that is valid, namely TurnbackHoax.id. There are 1786 news used in this study, with 802 fact and 984 fake news. The results indicate that the CNN and LSTM methods were successfully applied to determine fact and fake news in Indonesian language properly. CNN has an accuracy test, precision and recall value of 0.88, while the LSTM model has an accuracy test and precision value of 0.84 and a recall of 0.83. In testing the new data input, all of the predictions obtained by CNN are correct, while the prediction results obtained by LSTM have 1 wrong prediction. Based on the evaluation results and the results of testing the new data input, the model produced by the CNN method is better than the model produced by the LSTM method.
Sistem Forecasting Keuangan Inventaris Sarana dan Prasarana dengan Metode Naive Approach pada Universitas CIC
Authors: Wibawa Sakti , Sokibi Petrus
Published: January 2021

University Catur Insan Cendekia (UCIC) is a university located at Kesambi street number 202 Cirebon city. As one of the new universities in Cirebon city of course, would need inventory records of facilities and infrastructure that’s what at the university. Additionally, records spending on facilities and infrastucture costs is important. To optimize that cost recording requires a system. To Improve management facilities and infrastructure requires data related to facilities conditions and infrastructure. Naïve’s own method was the result of his prediction of the previous year’s real data as a benchmark for forecasting the following year. The process of this method is to collect the data of the cost of facilities and infrastructure spending first, after which the system will predict the cost of facilities and infrastructure using the formula N= t-1, in addition to this web based research using the framework codeigniter. The forecast method conducted in the study using the naïve approach method, which is more effective than the moving average method. Naïve’s method was used to predict the cost data of facilities and infrastructure available at UCIC. The study also had the naïve approach prediction reached the following year’s prediction.
Sistem Monitoring Tumbuh Kembang Balita/Batita di Tengah Covid-19 Berbasis Mobile
Authors: Styawati Styawati , Ariany Fenty
Published: January 2021

The Corona virus is growing rapidly throughout the world, including in Indonesia. The development of the virus causes many activities related to humans to be stopped first. One of the activities that is not allowed is Posyandu (Pos Pelayanan Terpadu), even though posyandu is very important to do. Due to the importance of the posyandu, the posyandu cadres conduct a mobile posyandu (sweeping). The problem that arises from sweeping is that people who have toddlers are not at home. Even though they are at home, they usually don't want to meet with posyandu cadres because they are afraid of the spread of the Corona Virus. Technological developments can help prevent the spread of the Corona Virus to humans. Any activity related to other people can be done online. In this study, trying to design a system that can monitor the growth of toddlers without having to meet directly with posyandu cadres. The system design is also expected to help Poskeskel (Pos Kesehatan Kelurahan) and Puskesmas (Pusat Kesehatan Masyarakat) to view and print weighing reports without having to ask for monthly weighing data reports for toddlers to Posyandu in Bandar Lampung. In addition, this system is expected to make it easier for posyandu cadres to report every posyandu activity and to report the growth and development of toddlers who are registered at the Flamboyan 9 Posyandu.
Sistem Status Kelaikudaraan Pesawat Udara Berbasis Website Menggunakan Framework CodeIgniter dan PostgreSQL dengan Metode Prototype
Authors: Aziz Abdul , Nahak Ildefonsa Anna Fransiska , Rismayanti Irma , Ramadian Aries Asrianto , Kusumoaji Danartomo , Muzayadah Nurul Lailatul , Anwar Rudi Choirul
Published: January 2021

In aircraft operation, maintenance must always be carried out so that the aircraft meets airworthiness standards in order to meet flight safety, in which maintenance is carried out on aircraft components on a regular basis. The problem that exists today is that there is frequent damage to the aircraft without any known cause, even when the aircraft is flown which results in the plane crashing and experiencing severe damage until it can no longer be used. This condition is due to the absence of a system that can monitor the aircraft maintenance process, so that the components of the aircraft used to be flown cannot be known whether it is airworthy or not. The solution to overcome this problem is by building a website-based system. The system was built using the CodeIgniter framework and PostgreSQL as its database. Meanwhile, for system development using the Prototype method. Through this system the aircraft maintenance process can be carried out according to the existing schedule.