bluuebunny/crossref_metadata_2025 huggingface dataset:
A PRODUÇÃO ACADÊMICA DA REGIÃO NORTE: UMA ANÁLISE NA ATA DO XI ENCONTRO NACIONAL DE PESQUISA EM EDUCAÇÃO EM CIÊNCIAS
Authors: Pereira Tássila Zerbini Monteiro , Silveira Camila
Published: September 2019

Esta pesquisa de natureza qualitativa tem como objetivo, fundamentada nos pressupostos da pesquisa documental, analisar a produção científica de pesquisadores da Região Norte no Encontro Nacional de Pesquisa em Educação em Ciências (ENPEC), evidenciando as perspectivas teóricas e metodológicas das pesquisas. Para isso, foram utilizados como fontes de informação os trabalhos contidos nos anais do XI ENPEC e, para tratamento dos dados, a Análise de Conteúdo. Os resultados mostram que 5,8% dos trabalhos do XI ENPEC foram realizados por pesquisadores da Região Norte, sendo 61% desenvolvidos por participantes do estado do Pará. Os eixos temáticos com mais trabalhos foram Formação de Professores de Ciências (32%), Ensino e aprendizagem de conceitos e processos científicos (15%), Processos e materiais educativos em Educação em Ciências (15%), Educação em espaços não-formais e divulgação científica (11%), e Alfabetização Científica e Tecnológica, abordagens CTS/CTSA e Educação em Ciências (10%). Por fim, foi possível perceber que, apesar de haver um crescimento da representatividade da Região Norte no ENPEC, há uma influência grande dos locais onde os eventos são sediados – geralmente na região Sul e Sudeste – na divulgação científica da região, pois a distância dificulta a participação dos pesquisadores de estados mais afastados.
New OSTBC for Blind Channel Estimation and Tracking in MIMO-OFDM Systems
Authors: Tami Abdelkader , Keche Mokhtar , Bouazza Boubaker S.
Published: September 2019

Applying orthogonal space time block coding (OSTBC) to multiple-input multiple-output (MIMO) systems helps reduce receiver complexity. However, this approach has been applied only to ﬂat fading channels, as when the channel is a frequency selective fading MIMO channel, OSTBC cannot be used directly since its orthogonal propriety may be lost. Furthermore, the MIMO channel is not always known. To deal with this problem, many techniques were proposed to estimate the channel using a training sequence. Unfortunately, these techniques reduce the useful spectral bandwidth. This paper proposes OSTBC for blind channel estimation and data detection in the case of a MIMO frequency selective channel. The aim of this new OSTBC is twofold: to solve the ambiguity of channel estimation and to reduce the complexity of the detector. By exploiting the well-known technique of orthogonal frequency division multiplexing (OFDM), the frequency selective fading MIMO channel is split into a set of ﬂat fading subchannels. Moreover, to accommodate the fact that a MIMO channel can be time varying, the steady state Kalman channel estimator (SS-KCE) is extended to track the channel’s fast variations. The performance of the proposed blind algorithm is related by the adequate choice of the number of subcarriers and it is compared with other existing approaches by means of Monte Carlo simulations.
Spline-Extrapolation Method in Traﬃc Forecasting in 5G Networks
Authors: Strelkovskaya Irina , Solovskaya Irina , Makoganiuk Anastasiya
Published: September 2019

This paper considers the problem of predicting self-similar traﬃc with a signiﬁcant number of pulsations and the property of long-term dependence, using various spline functions. The research work focused on the process of modeling self-similar traﬃc handled in a mobile network. A splineextrapolation method based on various spline functions (linear, cubic and cubic B-splines) is proposed to predict selfsimilar traﬃc outside the period of time in which packet data transmission occurs. Extrapolation of traﬃc for short- and long-term forecasts is considered. Comparison of the results of the prediction of self-similar traﬃc using various spline functions has shown that the accuracy of the forecast can be improved through the use of cubic B-splines. The results allow to conclude that it is advisable to use spline extrapolation in predicting self-similar traﬃc, thereby recommending this method for use in practice in solving traﬃc prediction-related problems.
Public-private Partnership — the Basis of innovative Development and Security in the Transit Economy: Monograph
Authors:   Market Economy Institute of RAS, Zoidov Kobilzhon Kh. , Medkov Aleksey A. ,   Market Economy Institute of RAS, Zoidov Zafar K. ,   Market Economy Institute of RAS
Published: September 2019

The monograph discusses theoretical and applied questions of the institute of public-private partnership (PPP) related to the implementation of investment projects aimed at innovative development and economic security of both the transport and transit system of Russia and other public entities. The methodological basis comprises evolutionary and institutional theory, econometric modelling, system analysis, expert estimations and historical approach. Rich economic facts that illustrate important common and specific features of transit economy across various countries in different historical periods are given in the study. Special attention is paid to the Persian Empire, the Chinese Empire, the Byz-antine Empire, the Ottoman Empire, the Republic of Venice, Ancient Russia, as well as the entire region of Central Asia (CA) which is a natural bridge between the East and the West. Macroeconomic description of the main trends in trans-formation development of the post-Soviet economies as well as modeling of their evolution against the backdrop of integration and global instability are provided. The main internal and external adverse factors affecting volume of traffic freight within the territory of Russia are identified, analyzed and systematized. In particular, the study analyses ambigu-ous influence on the Russian transport and transit capacity (TTC) of the following factors such as Chinese project of the Silk Road Economic Belt (SREB), the disconnected policies of the member states of the EAEU in the field of transport infrastructure construction and cross-border transportation of goods and passengers, the effects of transit conflicts with neighboring countries and the EU member states. The influence of transit economy on both solving water and energy problems in Central Asia and providing stability and security in the region is paid special attention. Detailed analysis and economic assessment of the development of transit economy in Iran, Turkey, Afghanistan, Pakistan, India, and other countries against the background of the implementation of infrastructure projects in Russia, the EAEU and Cen-tral Asia are conducted. The hypothesis about the necessity to establish national public-private company aimed at financing and implementing projects in order to develop Russian TTC is put forward and justified. The study points out interdependence of the PPP based investment projects developing international transport corridors such as "East — West", "North — South" and "Europe — Western China". Implications for the labor market situation, quality of labor resources, passenger traffic development, small (medium) business and employment in the Russian Federation are discussed. Scientifically proved recommendations for improving control methods of transit economy as well as a new evolutionary strategy for advanced development are formulated.
Review on in vitro antioxidant activities of Curcuma species commonly used as herbal components in Indonesia
Authors: Rohman Abdul , Widodo H. , Lukitaningsih E. , Rafi M. , A.F. Nurrulhidayah , Windarsih A.
Published: September 2019

Free radicals, reactive nitrogen species (RNS) and reactive oxygen species (ROS) have
been known to contribute several degenerative diseases such as cardiovascular diseases,
aging, certain types of cancers, rheumatoid arthritis, neurodegenerative, and diabetes
mellitus. In order to overcome the negative effects of these radicals, some scientists have
explored some natural antioxidants from plants and it's by-products. The antioxidant can
be defined as any substances or samples capable of inhibiting free radical reactions in the
oxidation reaction. Due to curcuminoids contained, Curcuma species such as Curcuma
longa, Curcuma heyneana, Curcuma mangga, and Curcuma xanthorriza were commonly
used for herbal components in some traditional medicine. Several in vitro tests been
introduced and used to measure antioxidant activities, namely radical scavenging assay
using 2,2’-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azinobis-(3-ethylbenzothiazoline-6
-sulfonic acid) (ABTS•+), ferric reducing antioxidant power (FRAP), ferric-thiocyanate,
phosphomolybdenum method, cupric ion reducing antioxidant capacity, metal chelating
power, beta-carotene bleaching linoleic-ferric-thiocyanate, and thiobarbituric acid
methods. This review highlighted the antioxidant activities in vitro of C. longa, C.
heyneana, C. mangga, and C. xanthorriza through several tests. To perform this review,
several repute databases were analyzed and used. From this review, it can be stated that
Curcuma species have powerful antioxidant activities, therefore they could be potential
sources of natural antioxidants and can be used as food supplements.
Discrimination of porcine and bovine gelatines based on reducing sugar types on Maillard reaction
Authors: Hamid A.H. , Nurrulhidayah A.F. , Sani M.S.A. , Muhammad N.W.F. , Othman R. , Rohman Abdul
Published: September 2019

Increasing awareness among Muslims with respect to the Halal status of food has
intensified efficient and effective food-source authentications that are science-basedprotocol. Traceability of gelatine to its source remains a daunting scientific task prior to
classification of gelatine Halal status. The methodology of this study involves UV-Vis
spectroscopic measurement of the degree of browning during Maillard reaction of
different gelatine sources with the different type of reducing sugar. D-(+)-xylose has the
highest value of browning value (A420nm) of Maillard reaction with gelatine among
compared to another type of reducing sugar used. Principle Component Analysis (PCA)
used to differentiate the sources of gelatine and successfully identify the major
contribution of D-(+)-xylose in the browning value. The score plots of the first principle
component (PC1) and the second component (PC2) could be classified and differentiated
of gelatine types (porcine, bovine and fish) using variables of browning value of Maillard
reaction of gelatinees with different types of sugar, as evaluated using spectrophotometer
at 420 nm.
Aplikasi Teknologi Ulir Filter (TUF) dengan Media Geomembrane sebagai Upaya Peningkatan Kualitas dan Kuantitas Produksi Garam di Kabupaten Pati Jawa Tengah
Authors: Yasin Hasbi , Sugito Sugito , Mukid Moch. Abdul , Prahutama Alan
Published: September 2019

Kebutuhan akan garam semakin meningkat, baik kebutuhan garam rumah tangga apalagi kebutuhan terhadap garam industri. Kabupaten Pati sebagai salah satu pusat produksi garam di Jawa Tengah diharapkan mampu untuk memenuhi permintaan garam yang semakin meningkat. Upaya yang dapat dilakukan adalah dengan peningkatan kualitas dan kuantitas garam melalui teknologi yang tepat, murah, dan mudah diaplikasikan oleh para petani garam. Salah satu metode yang dapat digunakan adalah produksi garam dengan sistem Teknolgi Ulir Filter (TUF) dengan media Geomembrane. Metode ini mampu meningkatkan efisiensi waktu produksi dan juga mampu meningkatkan kualitas garam yang dihasilkan. Oleh karena itu, Tim Pengabdian PKUM Undip bekerja sama dengan Kelompok Usaha Garam Rakyat (KUGAR) Karya Makmur dan KUGAR Garam Mulya dalam upaya meningkatkan produksi kuantitas dan kualitas garam di Kabupaten Pati, Jawa Tengah. Kegiatan ini dilakukan dalam bentuk perbaikan Standar Operasional Prosedur (SOP) tentang teknik produksi garam dan pemberian bantuan alat produksi untuk meningkatkan kapsitas produksi dan kualitas garam yang dihasilkan. Hasil kegiatan ini mampu meningkatkan produksi garam mencapai 30-40% dengan kualitas garam yang lebih baik (Kualitas K1/Garam Super).
Digitalisasi Madrasah di Era Revolusi Industri 4.0: Refleksi Kegiatan Pengabdian Kepada Masyarakat di Kabupaten Ponorogo
Authors: Irawan Edi
Published: September 2019

Hadirnya revolusi industri 4.0 harus disikapi dan dipersiapkan dengan sangat baik, termasuk halnya oleh madrasah. Peluang yang ada justru harus dijadikan pelecut semangat untuk berbenah dan berinovasi agar madrasah semakin maju dan berkembang. Kenyataan yang ada, jangankan untuk menghadapi revolusi industri 4.0, keberadaan website sebagai sarana informasi resmi saja belum ada. Kegiatan pengabdian kepada masyarakat ini berupaya memberikan solusi bagi madrasah swasta di Kabupaten Ponorogo yang belum memiliki website. Pengabdian kepada masyarakat ini menggunakan pendekatan participatory action research. Secara teknis, dilakukan melalui lima tahapan pengabdian berbasis kompetisi yang meliputi persiapan, pelatihan, pendampingan, kompetisi, dan apresiasi. Hasil nyata kegiatan pengabdian ini adalah keberadaan website resmi madrasah dampingan. Seluruh website tersebut selanjutnya dilakukan kompetisi antar madrasah dampingan dengan beberapa kategori perlombaan. Madrasah dengan website terbaik pada masing-masing kategori diumumkan dan diberikan apresiasi pada kegiatan abdimas award. Indikator lain keberhasilan program pengabdian kepada masyarakat ini adalah hasil umpan balik dari Kepala Madrasah dampingan. Sebanyak 94% madrasah menyatakan bahwa secara umum pelaksanaan kegiatan pengabdian kepada masyarakat ini terlaksana dengan sangat baik.
Budidaya Naga di Kebun: Pengolahan Buah Naga dalam Rangka Peningkatan Produksi Ekonomi Desa Bululor, Kecamatan Jambon, Kabupaten Ponorogo
Authors: Nurullita Hervina , Afiyanto Hendra , Safudin Endrik
Published: September 2019

Penelitian ini bertujuan untuk memotong mata rantai kemiskinan di Desa Bululor, Kecamatan Jambon. Mata rantai kemiskinan di Desa Bulu Lor dapat dipotong jika masyarakat mampu mengubah pola pikir terkait tanaman pertanian. Tanaman pertanian untuk konsumsi didiversifikasi dengan tanaman alternatif untuk produksi. Berubahnya pola pikir ini akan mengubah jenis tanaman pertanian dari padi ke buah naga. Efeknya adalah lahan pertanian tidak hanya untuk tanaman padi (baca=konsumsi), tetapi masyarakat sudah berpikir lahan pertanian dan pekarangan kosong juga digunakan untuk buah naga (baca=produksi). Perubahan pola pikir dan diversifikasi tanaman pertanian akan mampu meningkatkan income lebih untuk kenaikan taraf ekonomi masyarakat. Nantinya dengan banyak munculnya wirausahawan buah naga maka pendapatan masyarakat meningkat. Peningkatan pendapatan masyarakat berelasi dengan meningkatnya tingkat pendidikan generasi muda. Jika tingkat pendidikan sudah mulai mengalami peningkatan maka secara perlahan angka kemiskinan di tahun berikutnya sedikit dapat dikurangi. Melalui tulisan ini disimpulkan adanya agen dari luar sangat diperlukan bagi masyarakat Desa Bulu Lor. Agen berfungsi untuk memberikan pengetahuan tentang budidaya buah naga. Dengan adanya agen akan dapat memotong mata rantai pola pikir masyarakat yang cenderung take it for granted, sehingga masyarakat terbuka peluangnya untuk mencapai tujuan yang dikehendaki sendiri.
Optimalisasi Media Pembelajaran Interaktif dalam Meningkatkan Kemampuan Matematis Anak di Desa Popo Kabupaten Manggarai
Authors: Jundu Ricardus , Jehadus Emilianus , Nendi Fransiskus , Kurniawan Yohanes , Men Fulgensius E.
Published: September 2019

Proses pembelajaran yang baik akan menunjang belajar efektif. Pelaksanaan pembelajaran cenderung mengalami kendala pada proses pelaksanaannya. Salah satu kendala belajar siswa yaitu jarangnya pemanfaat media dalam belajar. Proses belajar siswa cenderung terpaku pada buku bacaan. Proses belajar sebenarnya bisa juga menggunakan media pembelajaran yang menarik sehingga bisa meningkatkan minat belajar dan pemahaman konsep siswa. Siswa di desa Popo kecamatan Satarmese Utara kabupaten Manggarai lebih dominan belajar dengan memanfaatkan buku bacaan saja sehingga siswa cepat merasa bosan untuk belajar. Belajar yang menyenangkan bisa memanfaatkan media pembelajaran sederhana dengan memanfaatkan berbagai macam alat dan bahan yang ada di sekitar lingkungan. Media pembelajaran yang dihasilkan memberikan manfaat bagi anak SD di desa Popo terutama dalam kemampuan matematisnya. Siswa lebih mudah untuk memahami berbagai konsep matematika karena dibantu media pembelajaran interaktif. Guru termotivasi untuk mengembangkan media pembelajaran dalam meningkatkan minat belajar matematika siswa.
Methods of the matrix analysis and graphic ranking of the array of the experimental IR spectroscopy data in studying the inter-component processes in the mixture of pheniramine maleate and naproxen
Authors: Eltsova N. O. , Budko E. V.
Published: September 2019

A widespread use of complex pharmacotherapy entails the necessity of studying the processes occurred in pharmaceutical mixtures. IR spectroscopy is one of the methods used to assess the stability of substances. To increase the efficiency of interpretation of the IR spectra of mixtures, a method combining matrix methods and graphic ranking of the array of experimental data has been developed. This approach has been tested for the analysis of model mixtures of pharmaceutical substances naproxen and pheniramine maleate. Absorption spectra were obtained on an Avatar 360 FT-IR ESP Fourier transform spectrometer (Nicolet, USA) using an ATR (primary attenuation total reflection) attachment Smart Perfbmer (optical crystal ZnSe; spectral range 1.35 - 26.6 pm, 7400 - 375 cm4). The obtained IR spectra were processed using Thermo Scientific Specta embedded software. Graphs for graphical ranking were plotted in the coordinates of the mixture heating temperature —relative frequency intensity. The points on the graph represent the relative intensity of the bands for a mixture kept at a certain temperature, whereas the curves with which they are connected reflect the processes occurring in the structure of the substance. Common trends in the relative intensity for different frequencies (at the same temperature) and/or for a number of frequencies of a certain characteristic region, indicates the unidirectionality of the process. Graphic ranking is applied to the characteristic bands of pyridine and aliphatic nitrogen of pheniramine maleate and characteristic frequencies of the intermolecular hydrogen bond and carbonyl group of naproxen. We also used the method of mathematical ranking of the matrices of transmittance values. For the characteristic bands of the studied compounds, a combined use of graphical and mathematical ranking allowed us to infer a change in the structure of naproxen and pheniramine maleate under the impact of elevated temperatures: the salt of pheniramine and maleic acid in aliphatic nitrogen has one structural conformation, whereas the binding force depends on the temperature.
Modeling of the reaction interdiffusion in the polycrystalline systems with limited component solubility
Authors: Afonin N. N. , Logacheva V. A.
Published: September 2019

that may be accompanied by the processes of mutual diffusion and phase formation. Controlled technological process of forming coatings with the given properties entails the necessity of forecasting the evolution of the phase composition. This in turn requires the development of algorithms and quantitative models of the processes. Reactive mutual diffusion in polycrystalline metal (oxide film systems with limited component solubility) has not been simulated before. The simulation allows selecting the annealing conditions (time and temperature) necessary for the inclusion and uniform distribution of metal in the oxide lattice. A quantitative model of the interaction in a multi-layer system metal — polycrystalline oxide of the other metal under conditions of limited solubility is developed. The model is based on the concepts of mutual diffusion of the components and the bulk reactions of the formation of complex oxides. The developed model was applied to the analysis of the process of modifying thin films of titanium oxide with transition metals. The model allowed us to perform a numerical analysis of the experimental concentrations of the component distributions in polycrystalline Co - Ti02 and Fe - Ti02 thin-film systems. The individual diffusion coefficients of the studied metals and titanium under conditions of vacuum annealing were determined. The model provides a good description of the basic systematic features of the process: the appearance of titanium in the metal film and deep penetration of Fe and Co into the film of titanium oxide. It also explains the fact that complex oxides are formed not by layer-by-layer growth at the metal-oxide interface, but throughout the entire thickness of Ti02 film. The results of analysis of the processes of interracial interaction in layered systems accompanied by the reaction mutual diffusion can be used to predict the evolution of the phase composition, as well as to control the technological processes of obtaining materials with the desired properties.
Modified solid-contact sensors for determination of cefuroxime and cefalexin in medicines and oral fluid
Authors: Kulapina E. G. , Dubasova A. E. , Kulapina O. I.
Published: September 2019

Cefuroxime, cefuroxime axetil and cefalexin are broad-spectrum pluripotential cephalosporin antibiotics. Their determination in various objects suggests using expensive spectroscopic, chromatographic, electrochemical equipment and organic solvents. Potentiometric sensors can provide rapid detection of cephalosporin antibiotics in a small sample volume without a preliminary sample preparation. The study is aimed at the developing of modified solid-contact potentiometric sensors for determination of cefuroxime and cefalexin in aqueous, biological media, and pharmaceuticals. The electroanalytical characteristics of unmodified and modified polyaniline and copper oxide nanoparticle sensors are evaluated. Tetradecylammonium(TDA) with a silver (I) – cefuroxime complex are used as the active membrane components, whereas polyaniline and copper oxide nanoparticles are used as modifiers. The main electroanalytic and operational characteristics of the studied sensors in aqueous solutions of antibiotics and against the background of oral fluid (LRP) are determined. The results of comparative evaluation of the electroanalytical properties of unmodified and modified solid-contact sensors in aqueous media of some â-lactam antibiotics and against the background of oral fluid are presented. The sensors based on Ag (Cefur)2TDA are characterized by a short response time: for modified polyaniline (PAN) and copper oxide nanoparticles within 5 – 10 sec, for unmodified — 10 – 20 sec. The linear range of the electrode functions for unmodified and modified sensors is 1 × 10–4 – 1 × 10–1 M, the detection limit is 7.4 × 10–5 M for unmodified and 6.3 × 10–5 M for modified sensors, respectively. The potential drift is 6 – 12 and 4 – 6 mV/day, service life is 1.5 and 2 months for unmodified and modified sensors, respectively. The modifiers stabilize the electrode potential, perform the function of the electron transfer mediator thus enhancing the electroanalytical characteristics of the sensors. The effect of the redox agents on the sensor properties is revealed: 1 × 10–3 – 1 × 10–4 MK 2Cr2O7 and FeCl3 solutions reduce the linearity intervals of the electrode functions, KI and Mohr’s salt do not affect the characteristics of the sensors in cefuroxime and cephalexin solutions. The coefficients of potentiometric selectivity of cefuroxime-selective sensors (modified with CuO nanoparticles) with respect to cefazolin, cefotaxime, and cefalexin are close to unity; Kijpot with respect to inorganic anions being part of the oral fluid (, Cl Br,I,HCO3 ,H PO 24 ,HPO4 2) are n × 10–2 – n × 10–3. This indicates the possibility of using sensors for detecting individual cephalosporin antibiotics or their total content in the presence of 100 – 1000 fold excesses of inorganic ions in medicinal and biological environments, small sample volumes, which is important when studying the pharmacokinetics of antibiotics and in determination of the maximum therapeutic dose when adjusting the treatment process.
Assessment of the residual life of the high-temperature elements of the turbine rotors through modeling the reduction of the metal continuity
Authors: Gladshtein V. I. , Liubimov A. A.
Published: September 2019

Calculation and experimental estimates of the residual life of steels P2M and EI415 of two strength levels (H and B) are carried out using two methods, the new one and the traditional. The loading was carried out for 300 thousand hours under conditions similar to those in which the metal operates in the zone of blade attachment in the rim of the disk of the first stage of medium-pressure rotors of K-300-240 LMZ and KhTZ turbines. When evaluating the residual life, a gradual decrease in stresses due to creep was taken into account by distinguishing several stages with conditionally constant stresses. According to the new methodology, the residual life was estimated by a change in the metal super-continuity at each stage 47 = ц/п + 1, where u/ is the continuity, n is the crack formation index; whereas in the traditional method the relative damage Р is estimated according to the principle of linear summation of damage (LSP). It is shown that the time dependences P and 47 obey the logarithmic law, while the metal of the fbrgings В (high strength) in all cases had a greater resource compared to the fbrgings H (low strength). For the first time, the process of resource depletion was considered by analyzing the sum of two functions: 47 + P = 1. It is shown that for R2M steel this amount is less than unity; for steel EI415 it is equal to or greater than unity. Proceeding from the literature data on the differences that follows from using LSP rule for a relatively viscous and brittle metal, we suggested that deviations from unity are attributed to the error in estimating the resource according to the LSP principle. Therefore, the result obtained by the new method should be recognized as more accurate. Taking into account the use of samples with a particularly deep sharp notch in which the brittle crack development is guaranteed by the proposed methodology, the new principle of calculating the residual life can be used in determination of the resource for any type of the parts made of the metal subjected to brittle fracture during operation under creep conditions.
A method for determination of the boundaries of the stage of steady fatigue crack growth and parameters of Paris equation
Authors: Golubovskiy E. R. , Volkov M. E. , Emmausskiy N. M.
Published: September 2019

A method and procedures for determining the boundaries of the second stage of the kinetic crack resistance diagram or fracture toughness kinetic diagram, sample formation within the aforementioned boundaries and determination of the parameters С and n of the Paris equation from the sample are presented. The necessity of developing the method is attributed to the lack of rules and procedures for accurate determination of the boundaries of the second stage in the current standards and regulatory document (RD). The proposed method provides a given accuracy of determination of the number of cycles corresponding to the length of the fatigue crack at the upper boundary of the second stage obtained by numerical integration of the Paris equation with the found values of the parameters С and re. The developed method is based on the application of two criteria R2 and %. Statistical criterion R2 characterizes a degree of deviation of the experimental data from the linear fragment of the kinetic fracture toughness diagram. Parametric criterion у specifies the level of accuracy of the parameters С and re of the Paris equation. This level is set through a comparative evaluation of the experimental and calculated crack length I and the number of cycles N, obtained by integration of the Paris equation within the specified lower and upper limits of the interval of the stable growth of fatigue crack. Application of the method is shown by the example of the experimental data obtained when testing samples of VT9 titanium alloy, deformable nickel alloy EI437BU and granular nickel alloy EP741NP (granules up to 140 pm) at room and elevated temperatures. Application of the method indicates that the experimental and calculated curves "I - N" obtained by numerical integration of the Paris equation differ by less than the specified value of the criterion X ^ 3%, in contrast to the results obtained in accordance to the recommendations of the regulatory documents.
Facial recognition techniques using SVM: A comparative analysis
Authors: Cadena Moreano José Augusto , La Serna Palomino Nora Bertha , Llano Casa Alex Christian
Published: September 2019

This paper presents a literary review of facial recognition in 2D, which plays an important role in the life of the human being in terms of safety, work activity, etc. The focus is on the results obtained by some researchers with the application of feature extraction techniques, pattern classifiers, databases and their respective percentage of efficiency obtained. The objective is to determine efficient techniques that allow an optimal 2D facial recognition process, based on the quality of databases, feature extractors and pattern classifiers.
TMS 19 ÇALIŞANLARA SAĞLANAN FAYDALAR STANDARDININ BİST’TE İŞLEM GÖREN ŞİRKETLERİN FİNANSAL TABLOLARI VE BAĞIMSIZ DENETİM RAPORLARI ÜZERİNDEN İNCELENMESİ
Authors: ÜNSAL Mehmet Ali , ÇAKICI Cemal
Published: September 2019

TMS 19
Çalışanlara Sağlanan Faydalar Standardı kapsamında borsada işlem gören ve en
çok çalışan istihdam eden şirketlerin finansal tabloları ve bağımsız denetim
raporları derinlemesine incelenmiştir. İnceleme sonuçları SPSS programına
aktarılarak çapraz tablolamalar yapılmıştır. Geliştirilen hipotezler
doğrultusunda veriler Anova (F Testi/Varyans Analizi) testine tabi tutulmuş,
sonuçlar raporlanmıştır.
STOK YÖNETİMİNDE ERP’NİN HİLEYİ ÖNLEMEYE YÖNELİK KULLANILMASI VE BİR UYGULAMA
Authors: ARABACI Sevinç , AKDEMİR Çağla , DOĞAN Sibel , TARHAN MENGİ Banu
Published: September 2019

Günümüzde işletmeler mevcut piyasa
koşulları karşısında maliyetlerini en aza indirgeyerek, karlarını maksimize
edecek etkin stok politikaları geliştirmek ve uygulamak zorundalar. Sürekli
değişen ve bu değişimi kontrol altında tutmanın zorlaştığı rekabet ortamı
karşısında üretim tek başına yeterli olmamaktadır. Ürünlerdeki çeşitliliğin
artmasıyla stok kontrolü ve yönetimi zor ve karmaşık bir hal almaktadır.
Kalite, hız, azalan maliyet, verimlilik ve müşteri memnuniyeti gibi etkenler
daha da önemli hale gelmiştir. İşletmeler bu etkenlerin baskısı ile iş
süreçlerinin geliştirilmesi adına daha çok bilgi ve iletişim gereksinimine
ihtiyaç duymaktadırlar. Bu bağlamda, akıllı bir teknoloji kullanımı kuruluşun
iş süreçlerinde rekabet avantajı sağlayabilmesinde etkili olacaktır. Bu
hedefleri gerçekleştirmek için şirketler giderek ERP sistemlerine geçiş
yapmaktadır. Stok, işletme organizasyonundaki tüm ürün ve malzemeleri
içermektedir. Stok yönetiminin en önemli amacı fazla ya da az stok
bulundurmanın önlenmesi ve dengenin kurulmasıdır. ERP yazılımları tüm bu
girdilerin etkin olarak kullanımına yardımcı olur. ERP, işletmenin tedarik
aşamasından dağıtım süresine kadar olan tüm işlevlerini bütünleşik bir bilgi
yönetim sistemi desteği ile yönetmesine katkıda bulunan geniş kapsamlı
bilgisayar yazılımlarıdır. Bu çalışmada beyaz eşya üretimi yapan bir işletmenin
stok yönetimi ve depolama süreçleri tüm yönleriyle ele alınmıştır. İşletmenin
yüksek riskli alanları ve hata-hile-düzensizliklere karşı en savunmasız olduğu
süreçler; ilgili çalışanlar ile görüşülerek, işletme faaliyetlerinin
incelenmesi ve incelenen konulara ilişkin temin edilen verilerin analiz
edilmesiyle belirlenmiş ve ERP kapsamında çözüm önerileri sunulmuştur.
Kredyt żywy, Kredyt umarły i kto nad nim płacze. Personifikacje Kredyta w ikonografii (XVI-XVIII w.)
Authors: Partyka Joanna
Published: September 2019

W artykule skupiam się na emblematycznych przedstawieniach Długu i Kredytu – dwóch pojęć wzajemnie się warunkujących. Wskazuję środki retoryczne (m.in. elementy niewerbalne sytuacji retorycznej, takie jak gest, mimika, strój) zastosowane w słownoobrazowej kompozycji Cesarego Ripy (Ikonologia, pierwsze wyd. 1593) oraz, dla porównania, z popularnym w grafice europejskiej XVII i XVIII w. motywem śmierci Kredyta, m.in. w polskim druku ulotnym Lament różnego stanu ludzi nad umarłym Kredytem (ok. 1655), składającym się z ryciny oraz wierszowanego, rozbudowanego opisu.
Distribusi Capung Pada Daerah Jalur Air Sungai Di Taman Wisata Alam Suranadi
Authors: Ilhamdi Muhammad Liwa , Idrus Agil Al , Santoso Didik
Published: September 2019

Capung mempunyai peran penting sebagai bioindikator lingkungan perairan dan warnanya indah sebagai ekowisata sehingga penelitian ini penting dilakukan. Hutan SuranadiÃÂ  dikategorikan sebagai salah satu kawasan yang memiliki keunikan secara bioekologi karena menyediakan tempat hidup bagi berbagai jenis capung. Tujuan penelitian ÃÂ untuk mengetahui distribusi capung di daerah jalur air sungai di Taman Wisata Alam Suranadi. Penelitian dilakukan pada bulan Juni 2019. Metode penelitian yang dilakukan adalah metode survey langsung melalui jalur perairan sungai yang ada di TWA Suranadi. Data di analisis menggunakan uji varians. Hasil penelitian menunjukkan bahwa satu spesies Gynacantha manderica berdistribusi teratur dan 15 spesies lainnya berdistribusi mengelompok.
Analisis Kadar Fosfat Dalam Air Sungai Ngelom Kabupaten Sidoarjo Jawa Timur
Authors: Ngibad Khoirul
Published: September 2019

Fosfat merupakan senyawa kimia dalam bentuk ion yang dapat menurunkan kualitas perairan dan membahayakan kehidupan makhluk hidup. Penelitian ini bertujuan untuk mengukur kadar fosfat dalam air sungai Ngelom yang mengalir di Desa Ngelom Kecamatan Taman Kabupaten Sidoarjo. Penentuan kadar fosfat yang terdapat dalam air sungai dilakukan menggunakan metode spektrofotometri UV-Vis. Reagen yang digunakan dalam pengukuran fosfat adalah ammonium molibdat dan SnCl2 yang ditunjukkan dengan perubahan warna menjadi biru. Larutan standar dan sampel tersebut diukur absorbansinya pada panjang gelombang sinar tampak 650 nm. Absorbansi fosfat yang dihasilkan sebanding dengan kadar fosfat yang terdapat dalam air sungai. ÃÂ Penentuan kadar fosfat dalam air sungai dilaksanakan pada rentang konsentrasi linear 10 Ã¢â¬â 180 mg/L dengan nilai correlation coeffisien (r) sebesar 0,9561 dengan limit of detection (LoD) dan limit of quantification (LoQ), masing-masing sebesar 1 mg/L dan 4 mg/L. Hasil pengujian kadar fosfat dalam sampel air sungai menunjukkan bahwa kadar fosfat dalam sampel air sungai berkisar antara 2 Ã¢â¬â 4,7 mg/L.ÃÂ  Dengan demikian, kadar fosfat dalam keseluruhan sampel air sungai tersebut masih memenuhi syarat ketentuan PP Republik Indonesia No 82 Tahun 2001 tentang Pengelolaan Kualitas Air dan Pengendalian Pencemaran Air Presiden Republik Indonesia untuk kelas 4.
RANCANG BANGUN MESIN PASCA PANEN HANJELI
Authors: Yusuf Asep , Thoriq Ahmad , Zaida Zaida , Widyasanti Asri , Alam Ganjar Dianugraha
Published: September 2019

Kebutuhan pangan akan terus meningat seiring dengan laju pertumbuhan jumlah penduduk yang terus naik, sehingga perlu dikembangkan bahan pangan alternatif, salah satunya hanjeli. Sebelum diolah hanjeli mengalami beberapa proses, yaitupengeringan, pemecahan kulit luar, penyosohan lapisan aleuron, pemisahan beras hanjeli dari dedak, dan penepungan.Pemanfaatan hanjeli sebagai bahan pangan masih terkendala dalam pemecahan kulit luar karena kulitnya sangat keras, sehingga dibutuhkan rancang bangun mesin pengupas untuk mempermudah dalam pengupasan kulit hanjeli sebelum penyosohan. Penelitian dilaksanakan pada bulan Juli – November 2018 di Laboratorium Bengkel Logam Kayu dan Rotan, Fakultas Teknologi Industri Pertanian, Univesitas Padjadjaran. Metode yang digunakan yaitu metode rekayasa (Engineering) dengan melakukan suatu kegiatan perancangan. Hasilnya adalah sebuah unit mesin pasca panen hanjeli yang terdiri dari unit pengupas, unit pemilah, dan unit penyosoh dengan komponen utama terdiri dari rangka, sistem transmisi, hopper, silinder pengupas, dan saluran pengeluaran biji. Mesin dapat digunakan untuk mengupas hanjeli varietas batu dengan besarnya hanjeli yang belum terkupas <35%.
PERUBAHAN SIFAT FISIK BUAH TOMAT SETELAH PROSES TRANSPORTASI
Authors: Widhiantari Ida Ayu , Sandra Sandra , Djoyowasito Gunomo
Published: September 2019

Selama kegiatan transportasi buah tomat dapat mengalami kerusakan akibat adanya frekuensi getaran yang berasal dari mesin transportasi dan juga lama waktu kegiatan transportasi. Adanya getaran selama proses transportasi buah tomat dapat mempengaruhi perubahan tekstur buah tomat. Optimasi dilakukan dalam penelitian ini dengan tujuan untuk memperoleh mutu buah tomat yang optimal setelah dilakukan simulasi transportasi. Optimasi dilakukan dengan menggunakan Response Surface Methodology (RSM) central composite design (CCD) dengan dua variabel bebas yaitu frekuensi getaran (3 Hz, 6HZ, dan 9Hz) dan lama waktu penggetaran (120, 150, dan 180 menit) serta tekstur buah tomat sebagai respon. Kondisi optimum diperoleh pada frekuensi getaran  2,33 Hz dan waktu simulasi transportasi 133,42 menit dengan nilai tekstur optimum buah tomat yaitu 0,147768 dengan nilai desirability sebesar 0,928.
Effect of KWL learning method (know-want-learn) and self-assessment on student learning independence vocational high school
Authors: Widiartini Ni Ketut , Sudirtha I Gede
Published: September 2019

The study aims at determining the effect of know-want-learn learning method and self-assessment of learning independence. The research activities were conducted in the form of quasi-experimental using 2x2 factorial design. The study population was XI grade students of all majors in Singaraja vocational middle secondary school, totaling 282 people. The sample was taken using random sampling, namely students of product service, fashion and hospitality on 124 people. Research data of learning independence scores were collected using a questionnaire. Data were analyzed using two-way analysis of variance. The analysis results showed that (a) towards the students who were given self-assessment. The learning independence of students who take learning with the KWL method were higher than students who take learning with conventional methods, (b) towards the students who were given peer assessment, learning independence of students who take learning the KWL method was no different from students who take learning with conventional methods, and (c) there was an effect of the interaction between the KWL learning method and self assessment on learning independence.
Lean Project Management using Unmanned Aerial Vehicles
Authors: Ersoz A. B. , Pekcan O. , Tokdemir O. B.
Published: September 2019

Development of a lean and automated progress tracking system is one of the most challenging subjects in the construction industry. Since the current methods depend on individual and manual inspections of the site, they may have various problems. For instance, results include a natural bias since field personnel makes interpretations depending on their educational and expertise level. From the practical point of view, manual data collection and their comparison with construction drawings and schedules are inefficient as it takes too much time. With the recent advancement of Unmanned Aerial Vehicles (UAVs) into the market and inclusion of lean project management principles, project management studies are inclined towards the digital and lean approaches. Within this perspective, the objective of this study is to reveal the use of UAVs as a lean project management tool. This paper indicates merely that UAVs have the potential for such a purpose.
Leveraging Point Cloud Data for Detecting Building Façade Deteriorations Caused by Neighboring Construction
Authors: Shi Z. , Ergan S.
Published: September 2019

Building facade deterioration due to aging and nearby construction sites is a continuous public safety concern. Within the past half-decade, there have been more than twelve-thousand complaints regarding falling debris from building facades in NYC, where it has around 1 million aging buildings. Thus, an effective method for facade inspection is essential for property owners and inspection agencies. Nowadays, 3D laser scanners are widely utilized for their ability to capture as-is conditions. However, an appropriate scanning setting when facing distinct types of tasks, such as crack detection and progression of damages on building façades is essential to expedite the data collection process. The overarching goal of this research is to compare the datasets captured through different settings of laser scanners (i.e., resolution and scanning distance) for crack detection and to evaluate the measurement accuracy of the detected/progressed cracks. In this study, we report back on the analysis performed on point clouds obtained with terrestrial laser scanners for crack detection. The results provide a performance analysis of terrestrial scanning systems and corresponding settings for crack detection. Findings can provide an alternative way to comply with the laws (e.g., Local Law 11/98 in NYC) that require periodical evaluations of buildings in cities.
Akdağ (Afyon) Yöresinde Kızıl Geyik (Cervus elaphus L.)’ İn Habitat Tercihleri
Authors: SÜEL Halil , ERCAN Murat
Published: September 2019

Bu tez çalışması Akdağ Yöresinde yayılış gösteren Kızıl geyik (Cervus elaphus) türünün yöredeki dağılımında etkili olan faktörleri ortaya koymak, türün dağılımını modellemek ve haritalamak amacı ile gerçekleştirilmiştir. Bu amaçla Akdağ Yöresinde 116 örnek alandan Kızıl geyik türüne ait yetişme ortamı ve var yok verileri toplanmıştır.Çalışmada istatistiksel süreçte ilk olarak modellemede kullanılacak değişkenler belirlenmiştir. Bu amaçla ilk aşamada bioiklim değişkenleri arasından temel bileşenler analizi ile temsilci bioiklim değişkeni belirlenmiştir. Daha sonra belirlenen temsilci bioiklim değişkeni de dahil edilerek tüm değişkenler arasından korelasyon analizi uygulanmıştır. Korelasyon analizi neticesinde 0.85 den büyük pearson değerine sahip değişkenler modellemeye dahil edilmemiştir. Değişkenlerin belirlenmesinin ardından türün dağılımı modellenmiştir. Modelleme işlemi için sınıflandırma ağacı tekniği (SAT) kullanılmıştır. Elde edilen modelin eğitim veri seti AUC değeri 0.96, test veri seti ROC değeri 0,68 olarak elde edilmiştir. Modelleme neticesinde elde edilen ağaç model 5 değişken ile oluşmuştur. Modele katkı yapan değişkenler sırasıyla, sıcaklık indeksi, yerleşim yerine uzaklık indeksi, gölgelenme indeksi, pürüzlülük indeksi ve radyasyon indeksi değişkenleri olmuştur.
Karaçam (Pinus nigra) Türünün Verimlilik Ve Dağılım Özellikleri Üzerine Ekolojik Değerlendirmeler: Isparta-Yenişarbademli Örneği
Authors: NEGİZ Mehmet Güvenç , ÇINAR Kadir , AYGÜL Esra Özge
Published: September 2019

Bu çalışma Yenişarbademli Yöresi’nde önemli bir asli orman ağacı türümüz olan Karaçam’ın verimliliği ve dağılımı ile yetişme ortamı özellikleri arasındaki ilişkileri ekolojik anlamda ortaya koyabilmek amacıyla gerçekleştirilmiştir. Çalışmaya ait veriler, yörede karaçam türünün doğal olarak bulunduğu alanlardan seçilen 70 örnek alandan elde edilmiştir. Karaçamın verimliliği ile yetişme ortamı özellikleri arasındaki ikili ilişkiler Pearson ve Spearman korelasyon analizleri ile irdelenmiştir. Türün verimliliğinin modellenmesi aşamasında çoklu regresyon analizinden faydalanılmıştır. Korelasyon analizleri sonucunda yükselti, alt yamaç ve düz arazi değişkenleri ile pozitif, eğim ve engebelilik değişkenleri ile negatif yönde ilişkiler belirlenmiştir. Modelleme aşamasında korelasyon analizlerinde olduğu gibi türe ait verimlilik modelini yükselti, alt yamaç ve düz arazi değişkenlerinin oluşturduğu sonucuna ulaşılmıştır.Çalışmadan elde edilen sonuçlar, başta Yenişarbademli yöresi ormanlık alanları olmak üzere tüm ülke ve dünya ölçeğinde karaçam türüne ait yapılacak ekolojik çalışmalara, gelecekte yapılacak ağaçlandırma ve koruma planlarının uygulanmasına katkı sağlayacaktır
Kanola (Brassica napus L.) saplarından üretilen yongalevhaların termal, yanma ve yüzey pürüzlülük özellikleri
Authors: GÜLER Gürcan
Published: September 2019

Bu çalışmada, yağlı tohumlu bir
otsu bir bitki olan kanola (Brassica napus L.) bitkisinin saplarından
elde edilen yongalevhaların termal, yanma ve yüzey pürüzlülüğü özellikleri araştırılmıştır.
Levhaların deneysel tasarımını, kanola ile kızılçam (Pinus brutia Ten.)
yongalarının %0, 25, 50, 75 ve 100 oranındaki karışımları oluşturmuştur. Termal
analiz bulguları, kanola yongalarının katılım oranı yükseldikçe üretilen
levhaların termal dayanıklılığının artacağını ortaya koymuştur. Ayrıca tek
kaynaklı alev testinin sonuçları termal analiz bulgularını desteklemiştir.
Levhalardaki yanma izi kanola yonga oranı arttıkça azalmıştır. Levhaların
üretiminde kanola yongalarının oranı arttıkça yüzey pürüzlülük değerleri düşüş
göstermiştir. Çalışma sonucunda, kanola bitkisine ait sapların kuru şartlarda
kullanılacak termal dayanımlı levha üretiminde hammadde olarak kullanılma
potansiyeline sahip olduğu görülmüştür.
Electrochemical production of ZnO and ZnO@Ag core-shell nanorods on ITO substrate and their photocatalytic and photoelectrochemical performance
Authors: HASPULAT-TAYMAZ Bircan , KAMIŞ Handan , DUYAR-KARAKUŞ Nadiye
Published: September 2019

Zinc oxide (ZnO) and Ag deposited ZnO (ZnO@Ag) core-shell nanorods produced electrochemically on indium tin oxide coated glass (ITO) substrate for the first time without any organic surfactants or high annealing temperature. Nanorod films were synthesized two-step synthesis procedure. Firstly, ZnO nanorods electrodeposited at low temperature, in second step, in situ electrochemically etching of deposited ZnO nanorod was carried out. Characterizations of electrochemically produced films have been carried by using morphologic, spectroscopic and structural analysis methods by using X-ray diffraction (XRD), scanning electron microscope (SEM), atomic force microscope (AFM), fourier transform infrared spectroscopy (FTIR), Elemental mapping, UV-visible diffuse absorption spectra and photoluminesance spectroscopy (PL). The photocatalytic performance of the obtained films was determined by degradation of methylene blue and malachite green dyes under UV light illumination. Methylene blue and malachite green dyes completely degraded under UV light irradiation after 150 and 180 min, respectively. Also, photoelectrochemical (PEC; water splitting) performances of the produced films were investigated under dark conditions and UV light irradiation. The ZnO@Ag core-shell nanorods exhibited higher photocatalytic and photoelectrochemical performance in comparison with unmodified ZnO nanorods film. The nanorods grown on the ITO substrates showed very good photocatalytic activity and became reusable without significant loss of activity.