bluuebunny/crossref_metadata_2025 huggingface dataset:
Estudo sobre a impermeabilização do compósito amido / resíduo de papel
Authors: Porto Jussara Smidt , Angrizani Clarissa Coussirat , Calcagno Carmen Iara Walter , Duarte Lauren da Cunha
Published: March 2020

Esta pesquisa apresenta um material alternativo que segue padrões inovadores e sustentáveis constituído pela união da matriz de amido gelatinizado com carga de resíduo de papel. Considerando que o amido e o papel possuem natureza hidrofílica, podem ocorrer limitações nas aplicações deste biocompósito caso não seja criada uma barreira para restringir a absorção de umidade. Para tanto, foram realizados testes de impermeabilização a fim de analisar o comportamento do material em relação à absorção de água (2 e 24 horas) com quatro diferentes impermeabilizantes com uma, duas e três demãos. Foram obtidos resultados satisfatórios a partir da segunda demão em 2 h e terceira demão em 24h, com os impermeabilizantes à base de poliuretano. Portanto, comparando-se aos outros impermeabilizantes testados, e buscando-se resultados mais sustentáveis, pode-se concluir que o impermeabilizante à base de poliuretano de origem vegetal demonstrou ser o que melhor atende aos objetivos desta pesquisa.
ESPACIALIZAÇÃO DA PRECIPITAÇÃO E ANÁLISES DE TENDÊNCIAS OBTIDAS ATRAVÉS DO SATÉLITE GPCC PARA O ESTADO DO ACRE
Authors: Filho David Figueiredo Ferreira , Crispim Diego Lima , Pessoa Francisco Carlos Lira , Fernandes Lindemberg Lima
Published: March 2020

Este estudo teve como objetivo analisar a distribuição espacial, o comportamento e a tendência da precipitação mensal e anual no estado do Acre, Brasil. Assim, os dados de precipitações totais anuais e mensais obtidos pelo Global Precipitation Climatology Centre (GPCC) no período de 36 anos (1982 – 2018) serviram de base para esta pesquisa. A variação pluviométrica foi estudada com ênfase na definição das classes de precipitação nas escalas anuais e mensais. Foi realizado uma análise estatística descritiva dos dados das séries temporais de precipitação, assim como foi empregado os testes de significância não-paramétricos de Mann-Kendall e Spearman. Na análise no tocante a escala mensal, os resultados indicaram que ocorre sazonalidade na precipitação, existindo duas estações climáticas bem definidas, uma menos chuvosa que ocorre de maio a outubro, e uma estação chuvosa que inicia no mês de novembro e vai até abril. Ainda, em relação à análise mensal, constatou-se que o mês com maior precipitação é março e o com menor é julho. Os testes não paramétricos evidenciaram um aumento no volume de precipitação na escala anual, sendo assim, ainda precisando de estudos mais profundos acerca do assunto.
Современное состояние отрасли животноводства Волгоградского Заволжья
Authors: Власенко Марина Владимировна
Published: March 2020

Дана оценка современному состоянию отрасли животноводства Заволжья в границах Волгоградской области в 6 районах. Установлен прирост поголовья крупного рогатого скота (КРС) в 4 районах. Наибольшая численность поголовья КРС в Заволжье сосредоточена в хозяйствах населения и КФХ. Наибольшее поголовье овец и коз в районах Заволжья выявлено в Палласовском районе — 153,8 тыс. голов. Рост поголовья овец и коз отмечен в 5 районах. Наибольшее количество поголовья лошадей в хозяйствах всех категорий зарегистрировано в Палласовском (2,8 тыс. голов) и Ленинском (1,1 тыс. голов) районах. Отмечен большой процент поголовья лошадей в хозяйствах всех категорий в Заволжье в общем поголовье лошадей Волгоградской области — 51,15 %. Наибольшее производство КРС на убой в хозяйствах всех категорий выявлено в Палласовском районе — 5225 т. Основное производство молока сосредоточено в хозяйствах населения, особенно в Ленинском, Палласовском и Быковском районах. В Заволжье выращивают около 1/2 поголовья овец и коз на убой и производится около 1/2 объема шерсти в хозяйствах всех категорий от общего производства области.
Скороспелый сорт яровой мягкой пшеницы Тарская 12 для северных районов Омской области
Authors: Григорьев Юрий Петрович , Белан Игорь Александрович , Россеева Людмила Петровна , Пахотина Ирина Владимировна
Published: March 2020

В 2014 – 2017 гг. проведена комплексная оценка перспективного селекционного материала яровой мягкой пшеницы для возделывания в северных районах Омской области. На госсортоиспытание передан среднеранний сорт яровой мягкой пшеницы Тарская 12 с комплексом хозяйственно ценных свойств и признаков. Сорт Тарская 12 создан скрещиванием сортов Омская 34 (к-64458, Россия) и Аранка (к-64277, Чехия). В 2019 г. сорт рекомендован для включения в Госреестр РФ по подтаёжной и лесостепной зонам Омской области. Испытуемый сорт Тарская 12 формирует более высококачественное зерно за счет лучших значений физических свойств теста и хлебопекарных достоинств, характеризуется средним уровнем устойчивости к ржавчинным заболеваниям и устойчив к пыльной головне. Средняя урожайность сорта Тарская 12 в конкурсном испытании за 2014 – 2019 гг. составила 3,54 т/га, превысив стандарт Памяти Азиева на 0,10 т/га при более укороченном сроке созревания. Одним из преимуществ нового сорта является стабильно высокое содержание белка и клейковины в зерне — в среднем соответственно на 1,95 и 3,6 % выше тех же показателей у сравниваемого стандартного сорта. Благодаря среднераннему типу развития, засухоустойчивости, толерантности к болезням и устойчивости к полеганию, высокого качества зерна сорт Тарская 12 успешно конкурирует с сортами аналогичной группы спелости.
Uso de diferentes bases de dados de irradiação solar na geração de energia elétrica de um sistema fotovoltaico
Authors: Moreira Júnior Orlando , Souza Celso Correia de , Frainer Daniel Massen
Published: March 2020

O artigo mostra o resultado da comparação entre os valores da energia elétrica gerada por um sistema fotovoltaico de 4,26kWp e a previsão de energia elétrica gerada segundo os dados de irradiação obtidos através de três softwares, SWERA, SunDATA e PV*SOL e da estação meteorológica do Instituto Nacional de Meteorologia (INMET). O software PV*SOL foi o que apresentou os melhores resultados, quando comparado aos dados do sistema fotovoltaico, variação média de 1,56%, enquanto que a base de dados da estação meteorológica do INMET e os softwares SunDATA e SWERA apresentaram desvios médios de 5,69%, 10,82% e 20,85%, respectivamente. O software PV*SOL, foi o que apresentou valores mais próximos frente aos resultados de geração de energia do sistema fotovoltaico, usando como metodologia de cálculo a potência do sistema, a área dos painéis, a eficiência de conversão do painel e a taxa de desempenho do sistema.
PARAMETER TEKNIS DALAM USULAN STANDAR PADA SISTEM TRANSPORTASI MASS RAPID TRANSIT (MRT)
Authors: Setyoko Ajun Tri , Purwanto Endi Hari
Published: March 2020

Peran standar dalam sistem persinyalan MRT menjadi sangat penting mengingat banyak terjadinya kecelakaan dari suatu sistem MRT di beberapa negara. Kejadian kecelakaan seperti: tabrakan MRT di Bangkok, Thailand yang mengakibatkan 140 orang terluka yang disebabkan oleh persinyalan kereta api. Metode penelitian yang digunakan yaitu analisis deskriptif eksploratif dengan melakukan survei terhadap 28 responden untuk mendapatkan 3 sasaran yaitu: 1) Esensi regulasi, 2) Kebutuhan pasar SNI MRT, dan 3) Validasi parameter standar. Hasil survei kebutuhan pasar menunjukkan  bahwa apabila terdapat SNI terkait transportasi MRT yang akan ditetapkan oleh BSN nantinya maka stakeholder sepakat terhadap 4 prinsip yaitu yang pertama adalah regulasi dan SDM menjadi faktor paling berpengaruh terhadap keselamatan artinya basis pedoman nilai keselamatan  transportasi yang berlaku berupa regulasi. Berdasarkan hasil validasi dengan pertanyaan Bagian 5 (kuesioner) hasilnya bahwa standar yang signifikan dibutuhkan di bidang transportasi MRT saat ini adalah standar IEEE 1474.1-1999 yang  bersifat sangat teknis yaitu persinyalan CBTC. Hal ini sesuai dengan hasil survei lapangan pertama yaitu 54% responden menyatakan sistem persinyalan sangat penting sekali untuk distandarkan.Hasil validasi parameter teknis memperlihatkan bahwa Standar IEEE 1474.1-1999 dengan judul Standard for Communication-Based Train Control (CBTC) Performance and Functional Requirement di dalamnya terkandung 3 bagian subbab yaitu: 1) General Requirement, 2) Performance Requirement, 3) Functional Requirement. Dalam standar tersebut keseluruhannya merupakan parameter esensial terkait keselamatan kecuali pada 4 parameter yaitu meliputi: 1) Parameter 4.3, 2) Parameter 5.1, 3) Parameter 5.2, 4) parameter 6.4 dan 5) parameter Annex B.Kemudian berdasarkan hasil pembahasan narasumber diperoleh Tujuh (7) parameter yang memerlukan kesepakatan bersama antara Stakeholder yaitu: Parameter 4.1, parameter 4.3, parameter 5.3, parameter 5.4, parameter 5.5, parameter 6, parameter 6.4 dan Annex B.
PENGARUH PENGGUNAAN FAKTOR KALIBRASI S-137Cs PADA PENGUKURAN DOSIS SINAR-X DENGAN DETEKTOR IONISASI HP(10) STANDAR SEKUNDER
Authors: Firmansyah Assef Firnando , Firmansyah Okky Agassy , Sunaryati Sri Inang , Rajagukguk Nurman
Published: March 2020

The value of Hp(10) can be measured directly using Hp(10) secondary standard chamber that developed by Physikalisch Technische Bundensalt (PTB), Germany. Hp(10) secondary standard chamber type T 34035/0046 is connected with electrometer PTW Unidos T 10001 / Ns.11814. In this paper, the exposure was carried out by X-ray sources and 137Cs for dose and radiation energy variations.The variations energy of X-ray were carried out using ISO 4037-1 quality narrow (N) spectrum within N-40 to N-300, while the radiation dose variations were carried out in the dose within range 0.1 mSv to 20 mSv. The use of the S-137Cs calibration factor for the Hp(10) secondary standard chamber with an X-ray irradiation source were carried out and obtained a fairly good response result not in all energy ranges. The result obtained a relatively constant response to energy of 65 keV to 250 keV (energy quality N-80 to N-250), this corresponds to the deviation obtained i.e ≤ 7% from the normalization reference source of 137Cs at 662 keV energy. Whereas for deviations below 3%, a relatively constant response has founded in the energy range of 100 keV to 250 keV (energy quality N-120 to N-250). The result obtained linier measurement on variations in dose according to changes in dose variation. The Hp(10) secondary standard chamber is capable for measuring variations of radiation dose, i.e from variations of 0.1 mSv to 20 mSv.
Nghiên cứu khoa học xã hội Việt Nam: giữa ngã ba đường. RCISS-0320-02
Authors: Hiep Pham Hung
Published: March 2020

Hội nhập quốc tế trong giáo dục đại học và nghiên cứu khoa học là chính sách đã được thực hiện liên tục ở nước ta trong khoảng 15 năm qua, kể từ khi Nghị quyết 14/2005/NQ-CP về đổi mới căn bản, toàn diện giáo dục đại học Việt Nam giai đoạn 2006-2020 được ban hành. Trong bối cảnh đó, cuốn sách “The Vietnamese Social Sciences: at a fork in the road” ra đời. Cuốn sách gồm 8 chương, bên cạnh 1 phần mở đầu, 1 phần kết luận và 1 phụ lục, dày hơn 200 trang đã tổng kết toàn bộ kết quả, thực trạng, xu hướng về các nghiên cứu của các tác giả người Việt trong lĩnh vực khoa học xã hội (bao gồm: kinh tế, giáo dục, tâm lý, y cộng đồng, khoa học chính trị, luật …) trong khoảng thời gian 11 năm (từ 2008-2018) trên các ấn phẩm quốc tế.
Spin: modificações na redação científica que escondem fragilidades metodológicas com impacto social negativo
Authors: de Lucena Alves Charles Phillipe , da Costa Gabriel Gonçalves , Barreto Segundo João de Deus , Helal Lucas
Published: March 2020

In this brief text, information, for scientists and non-scientists, what spin is and how to identify it in scientific texts.
Struktur Data & Struktur Program Turbo Pascal
Authors: Rahayu Erna Cucu
Published: March 2020

Materi Struktur Data dan Struktur Program Pascal
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Authors: salsabila novialindra chika
Published: March 2020

Menjelaskan Pemahaman Struktur Data
Dimensions of Spirituality in Personality Competence Christian Religious Education Teacher
Authors: Lase Delipiter
Published: March 2020

This article discusses the dimensions of spirituality in the personal competence of Christian Religious Education (CRE) teachers. Spirituality is essential because the teaching that CRE teachers do aims to improve the spirituality of their students. He should have good spirituality so that he can be an example in his teaching. In this paper, the author explaining the essential values of spirituality that must be possessed by a CRE teacher in order to fulfill his calling as someone who has a profession as a teacher. To arrive at this goal, the authors develop the essential values of spirituality by conducting literature studies and content analysis methods. Based on a search from various sources, including the nature of spirituality, according to Christianity, the author explains the essential spiritual values that must be possessed by a CRE teacher. The essential values of spirituality are grouped into two dimensions, namely the personal dimension and the relational dimension.
The EmojiGrid as a rating tool for the affective appraisal of touch
Authors: Toet Alexander , van Erp Jan B.F.
Published: March 2020

In this study we evaluate the convergent validity of a new graphical self-report tool (the EmojiGrid) for the affective appraisal of perceived touch events. The EmojiGrid is a square grid labeled with facial icons (emoji) showing different levels of valence and arousal. The EmojiGrid is language independent and efficient (a single click suffices to report both valence and arousal), making it a practical instrument for studies on affective appraisal. We previously showed that participants can intuitively and reliably report their affective appraisal (valence and arousal) of visual, auditory and olfactory stimuli using the EmojiGrid, even without additional (verbal) instructions. However, because touch events can be bidirectional and dynamic, these previous results cannot be generalized to the touch domain. In this study, participants reported their affective appraisal of video clips showing different interpersonal (social) and object-based touch events, using either the validated 9-point SAM (Self-Assessment Mannikin) scale or the EmojiGrid. The valence ratings obtained with the EmojiGrid and the SAM are in excellent agreement. The arousal ratings show good agreement for object-based touch and moderate agreement for social touch. For social touch and at more extreme levels of valence, the EmojiGrid appears more sensitive to arousal than the SAM. We conclude that the EmojiGrid can also serve as a valid and efficient graphical self-report instrument to measure human affective response to a wide range of (possibly mediated) tactile signals.
Tugas Section 01 Review and Evaluate the Material for Prospective Programmers
Authors: Kurniawan Danang
Published: March 2020

Artikel ini membahas tentang Struktur Data, Algoritma, bahasa pascal, type data, dan lain lain
Dynamics of liquid argon flow around carbon nanotube
Authors: Arabghahestani Masoud , Sheikhshahrokhdehkordi Mohammadamin , Akafuah Nelson K.
Published: March 2020

In this work non-equilibrium molecular dynamics (MD) simulations were performed to investigate the liquid argon flow passing a stationary carbon nanotube and to estimate kinetic energy of the flow and flow forces exerted on the nanotube. Effects of different factors were also investigated. CFD simulations of flow around a circular cylinder were also performed to compare the results with those of MD around the carbon nanotube. In molecular dynamics simulation, the fluid forces on the body are calculated directly from the summation of the molecular forces exerted on solid atoms by fluid atoms. In this work, this method is used to investigate the effects of different flow parameters such as flow velocity, flow temperature on the flow behavior over the carbon nanotube, atom positioning around the nanotube and forces exerted on it. The simulation is 3D, and the computational domain consists of a maximum of 33,700 liquid argon atoms as the fluid and 240 atoms of carbon which represent the solid nanotube. A single-walled carbon nanotube is simulated as a rigid body of fixed carbon atoms, and both argon-argon and argon-carbon interactions are modeled by the standard Lennard-Jonnes potential function. Flow is driven by rescaling fluid particles velocities at the inlet region with a length of 3% of the domain length in that direction every 50-time steps. Based on the information given, a parallel code was developed, and investigations have been conducted using this code. Results show that among all the parameters which were investigated in this paper, the flow velocity has the most significant effects on the exerted forces and kinetic energy on the carbon nanotube and the drag force is increased with an increment of the flow inlet velocity in all cases. Lift fluctuates around zero in all cases of the stationary carbon nanotube. Inlet flow velocities and temperatures have also changed atoms positioning in the vicinity of the nanotube and so atomic density in the nearby bins which is used to further clarify the difference in the drag force.
Deep Flow: Scientific Schema for Complex Problem Solving
Authors: Sethi Divya
Published: March 2020

Complex problem solvers are occasionally able to solve the problem by framing the problem properly and by engaging deeply to solve them. But there are times when the solvers experience an impasse and the problem just can’t be solved. We propose this as a pivoting point in complex problem solving, which requires the solver to, counter-intuitively, detach from the problem (instead of spending more effort in framing the problem and/or focusing on solving it). This disengagement prepares the ground for willful synthesis of both processed and unprocessed information streams – either automatically or through an interactive process. The outcome of synthesis is an aggregated solution which transcends the impasse and enables the solver to find an innovative and complete solution. This is often accompanied with a feeling of attunement, an intuitive sense of completeness. While it is possible to solve complex problems in an ad-hoc way, we outline a scientifically underpinned schema that governs this process. This process, which we refer to as Deep Flow, has four steps: (1) Frame, (2) Engage, (3) Disengage and (4) Synthesize. Deep Flow culminates in a feeling of attunement and creates positive affect. As solvers intentionally engage with Deep Flow, they can invoke the necessary steps at will. It empowers solvers to solve complex complex problems efficiently; also, the sense of attunement inspires them to tackle more complex problems in a comprehensive manner.
Ứng phó với Stress Học tập ở Sinh viên [Coping with academic stress among students]
Authors: Nguyen Quang Ngoc , Nguyen Chi Linh
Published: March 2020

Cách ứng phó với stress học tập quyết định mức độ ảnh hưởng tiêu cực của stress đối với sức khỏe thể chất, tinh thần và hiệu quả học tập của sinh viên. Tại Việt Nam, chưa có nhiều nghiên cứu tìm hiểu về chủ đề này. Nghiên cứu hiện tại được tiến hành dựa trên Lý Thuyết Tương Tác Về Stress nhằm tìm hiểu nguồn gây stress học tập, các chiến lược ứng phó, hệ quả ứng phó, và mối liên hệ giữa các chiến lược ứng phó với những biến số về nhân khẩu, và động lực học tập của sinh viên. Mẫu nghiên cứu là mẫu thuận tiện bao gồm 157 sinh viên trường Đại học Khoa học Xã hội và Nhân Văn với độ tuổi trung bình là 20.52, độ lệch chuẩn là 1.29, và nữ chiếm 77.7%. Kết quả nghiên cứu tìm ra 12 nguồn gây stress học tập chủ yếu. Kết quả và hiệu quả học tập, kiểm tra và đánh giá, khối lượng và mức độ khó của bài tập là những nguồn gây stress học tập phổ biến nhất. Giải quyết vấn đề, bộc lộ cảm xúc, suy nghĩ tích cực, và chấp nhận là những chiến lược ứng phó được sinh viên sử dụng thường xuyên nhất. Những sinh viên ứng phó điều hòa cảm xúc, chấp nhận, suy nghĩ tích cực, và thay đổi nhận thức thì có mức độ stress thấp hơn. Sinh viên ứng phó bằng chiến lược giải quyết vấn đề thì có kết quả học tập cao hơn. Những sinh viên thường né tránh và mong ước thì có mức độ stress cao hơn và kết quả học tập thấp hơn. Những sinh viên có động lực học tập tự chủ thường ứng phó gắn kết trong khi những sinh viên thiếu động lực hoặc có động lực học tập bị kiểm soát thì thường ứng phó tách khỏi.
Examining the Relationship Between Weapon Type and Relationship Type in American Homicides: A Bayesian Approach
Authors: Reynolds Joshua J , Bürkner Paul - Christian
Published: March 2020

Past research indicates that weapon type used in a homicide predicts the victim-perpetrator relationship. Limitations include small sample sizes, inconsistent findings, and limited data analytic techniques. To address these limitations, we examined 363,927 homicides and used Bayesian multilevel categorical regression. In addition to analyzing weapon type (final model consisted of 16 weapon categories), we examined the victims’ sex, age, and race as covariates and modeled the data across states and counties. Results indicate that weapon type is highly informative, however, the age of the victim and sex of the victim interact with weapon type in important ways.
You can do better than BMI when predicting mortality
Authors: Sorjonen Kimmo , Nilsonne Gustav , Falkstedt Daniel , Hemmingsson Tomas , Melin Bo , Ingre Michael
Published: March 2020

BMI has been used as a predictor of health outcomes, including mortality, in numerous studies. However, in the present study of Swedish male conscripts with follow ups (N = 48,904, 3442 deaths), we show that there are several better ways to use measured weight and height than to calculate BMI when predicting mortality. The most accurate model indicated lowest predicted all-cause mortality for those who weighed 60.5 kg at conscription, regardless of height. This weight seems to be a compromise between lower optimal weights to avoid cancer and CVD mortality and a higher optimal weight to avoid suicide.
Beta and Coskewness Pricing: Perspective from Probability Weighting
Authors: Shi Yun , Cui Xiangyu , Zhou Xunyu
Published: March 2020

The security market line is often flat or downward-sloping. We hypothesize that probability weighting plays a role and that one ought to differentiate between periods in which agents overweight extreme events and those in which they underweight them. Overweighting inflates the probability of extremely bad events and demands greater compensation for beta risk. Underweighting has the opposite effect. Overall, these two effects offset each other, resulting in a flat or slightly negative return--beta relationship. Similarly, overweighting the tails enhances the negative relationship between return and coskewness, whereas underweighting reduces it. We support our theory through an extensive empirical study.
Resolving Time Inconsistency of Decision Problem with Non-expectation Operator: From Internal Conflict to Internal Harmony by Strategy of Self-Coordination
Authors: Cui Xiangyu , Li Duan , Shi Yun
Published: March 2020

When a stochastic decision problem is time inconsistent, the decision maker would be puzzled by his conflicting decisions optimally derived from his time-varying preferences at different time instants (with different time horizons). While the long-run self (LR) of the decision maker pursues the long-term optimality, the short-run selves (SRs) of the decision maker at different time instants bow to short-term temptations. While the literature began to recognize the importance to strike a balance between LR's and SRs' interests, the existing results are not applicable to situations where the decision maker's preferences involve non-expectation operators. We propose an operable unified two-tier dual-self game model with commitment by punishment, which can cope with general time inconsistent stochastic decision problems with both expectation and non-expectation operators in the objective function. By attaching punishment terms to both the preferences of LR and SRs which quantitatively evaluate the internal conflict among different selves, our game model aligns the interests of the LR and SRs to a certain degree. The equilibrium strategy, termed strategy of self-coordination, achieves some degree of internal harmony among various selves. We successfully apply the model to the investment and consumption problem with quasi-hyperbolic discounting and the dynamic mean-variance portfolio selection problem.
Forecasting security's volatility using low-frequency historical data, high-frequency historical data and option-implied volatility
Authors: Yuan Huiling , Zhou Yong , Zhang Zhiyuan , Cui Xiangyu
Published: March 2020

Low-frequency historical data, high-frequency historical data and option data are three major sources, which can be used to forecast the underlying security's volatility. In this paper, we propose two econometric models, which integrate three information sources. In GARCH-It\^{o}-OI model, we assume that the option-implied volatility can influence the security's future volatility, and the option-implied volatility is treated as an observable exogenous variable. In GARCH-It\^{o}-IV model, we assume that the option-implied volatility can not influence the security's volatility directly, and the relationship between the option-implied volatility and the security's volatility is constructed to extract useful information of the underlying security. After providing the quasi-maximum likelihood estimators for the parameters and establishing their asymptotic properties, we also conduct a series of simulation analysis and empirical analysis to compare the proposed models with other popular models in the literature. We find that when the sampling interval of the high-frequency data is 5 minutes, the GARCH-It\^{o}-OI model and GARCH-It\^{o}-IV model has better forecasting performance than other models.
Ermittlung des zukünftigen Energiebedarfs von Industrie-unternehmen
Authors: Emde Alexander , Sauer Alexander , Märkle Lisa , Kratzer Benedikt
Published: March 2020

Kurzfassung

Durch die Liberalisierung des deutschen Elektrizitätsmarktes haben sich für Endverbraucher mehr Anreize ergeben, aktiv am Strommarkt mitzuwirken. Es können neue Einnahmequellen sowie Einsparmöglichkeiten erschlossen werden. Besonders im Bereich der industriellen Produktion ist es möglich, große Potenziale für Lastverschiebungen umzusetzen. Kurzzeitige Prognosen zur Vorhersage des Energieverbrauchs werden immer wichtiger, um dadurch frühzeitig mögliche Maßnahmen zur Energieflexibilisierung einleiten zu können. Dieser Beitrag soll einen Überblick über verschiedene Prognoseverfahren geben, auf deren Grundlage anschließend ein Prognosemodell zur kurzfristigen Lastprognose entwickelt wird. Durch eine Analyse der Last eines Referenzjahres werden signifikante Einflussfaktoren auf den Energiebedarf identifiziert, woraufhin eine Kombination aus zwei Prognosemethoden ein Modell zur Vorhersage liefert.
Technologieauswahlmodell zur Produktivitätsermittlung und -bewertung
Authors: Barth Teresa , Kutschera Frederike , Jenisch Robin , Lödige Maximilian , Prünte Melissa , Wagner Linda , Palm Daniel , Braun Anja , Ohlhausen Peter
Published: March 2020

Kurzfassung

Der Anteil mittelständischer Unternehmen, die Standorte im Ausland unterhalten, nimmt seit einigen Jahren zu. Oft finden Auslandsaktivitäten dieser Art in Niedriglohnländern statt. Dort ergeben sich u.a durch die infrastrukturellen Gegebenheiten und durch die verfügbaren Personalressourcen diverse Herausforderungen, insbesondere für die Produktivitätsermittlung und -bewertung innerhalb der Produktion. Dieser Beitrag soll für diese Herausforderungen geeignete Technologien und eine mögliche Vorgehensweise für deren Auswahl vor dem Hintergrund der ländertypischen Herausforderungen aufzeigen.
Standards für das Internet der Dinge
Authors: Jensen Marc P. , Uckelmann Dieter
Published: March 2020

Kurzfassung

Die digitale Transformation von Unternehmen wird nicht zuletzt durch das Internet der Dinge unterstützt. Eine besondere Herausforderung für die vernetzte Produktionswirtschaft ist eine übergeordnete Verknüpfung der einzelnen IT-Systeme und ein standardisierter Austausch von Daten zwischen den Akteuren. Nebenher entstehen immer größere Datenmengen. Für Unternehmen birgt dieser Informationsschatz ein großes Potenzial, wenn diese Daten im richtigen Kontext interpretiert und zusammengefügt werden können. Forschung und Industrie haben bereits verschiedene Technologien entwickelt und unterschiedliche Ansätze vorgestellt. Jedoch stellen die unterschiedlichen Anforderungen der einzelnen IoT-Domänen einen einheitlichen Informationsaustausch und standardisierte Datenmodelle noch immer vor Hindernisse.
Bewertung der Häufigkeit von Planungsläufen im Übergang zur digitalen Fabrik
Authors: Frey Dominik , Schuh Günther , Reschke Jan
Published: March 2020

Kurzfassung

Produzierende Unternehmen sind heute nicht in der Lage, zu bewerten, in welcher Häufigkeit Datenerfassung und Planungsläufe unterschiedlicher Planungsebenen durchzuführen sind. Noch immer werden nächtliche Planungsläufe zur Aktualisierung der Plandaten durchgeführt, obwohl technische Möglichkeiten, wie z. B. In-Memory-Datenbanken, eine hochfrequentere Planung ermöglichen. Weil Shop-floor-Daten in Zeiten der digitalen Fabrik sekündlich aufgenommen werden, können zu häufig durchgeführte Planungszyklen zu Turbulenzen in der Produktionsplanung und -steuerung (PPS) sowie der Fertigung führen. Derzeit existiert kein wissenschaftlicher Ansatz, der eine Bewertung der Häufigkeit von Planungsläufen in der PPS ermöglicht. In diesem Beitrag werden notwendige Grundlagen für eine systematische Bewertung der Häufigkeit von Planungsläufen sowie erste Gestaltungsansätze skizziert.
Interaktionsorientierte Organisationsgestaltung
Authors: Kunath Martin , Winkler Herwig
Published: March 2020

Kurzfassung

Für die Organisationsgestaltung in Unternehmen werden oft gleichartige Tätigkeiten lokal zusammengefasst, um die Geschäftsprozesse effizient abzuwickeln. Die auftragsbezogene Interaktion und Koordination erfolgt jedoch funktionsübergreifend. Dies gilt insbesondere dann, wenn die Leistungen projektbezogen auszuführen sind. Der Beitrag zeigt, wie aus Sicht der Fabrikplanung der Entwurf von interaktionszentrierten Organisationskonzepten gelingt.
Simulation hochautomatisierter Serienproduktion
Authors: Lechler Tobias , Zerreis Maximilian , Sitz Sarah , Reinhard Maximilian , Franke Jörg
Published: March 2020

Kurzfassung

Der Ramp-Down einer hochautomatisierten Serienproduktion ist mit einer Reihe kostenkritischer Herausforderungen und Planungsunsicherheiten verbunden. Die ereignisdiskrete Materialflusssimulation bietet ein Werkzeug zur Bewältigung dieser Herausforderungen, indem sie mögliche Ramp-Down-Szenarien im Voraus auf Wirtschaftlichkeit prüft und Kosteneinsparungspotenziale aufzeigt. Als Entscheidungsgrundlage kann die Simulation gezielt Fehler verhindern und die Produktivität im Serienauslauf steigern. Die Potenziale eines solchen Vorgehens werden anhand eines Beispiels aus der hochautomatisierten Serienproduktion aufgezeigt.
Automatisierung des Virtualisierungsprozesses im Anlagenbau
Authors: Häfner Victor , Benedix Anne-Christine , Häfner Polina
Published: March 2020

Kurzfassung

Mit dem Einsatz Virtueller Realität wird schon seit jeher eine immense Optimierung des Produktentwicklungsprozesses versprochen. Die Umsetzung einer immersiven Visualisierung scheitert aktuell oftmals an fehlenden Grundvoraussetzungen wie durchgängiger Digitalisierung oder geeigneten Softwarelösungen. Dieser Beitrag stellt einen wissensbasierten Lösungsansatz vor, mit dem aus heterogenen Planungsdaten aus MCAD, ECAD und PLC-Programmierung ein funktionales Modell automatisiert erstellt werden kann.
Study of the effect of synthesized high voltage electric charge of a powder mixture on the physical and mechanical properties of epoxy composites for the transport industry
Authors: Buketov А.V. , Syzonenko O.М. , Bezbakh О.М. , Torpakov A.S. , Lypian Ye.V.
Published: March 2020

For the formation of composite materials and protective coatings for the transport industry, ED-20 epoxy yanoic oligomer, the polyethylene polyamine PEPA and microfine fractions of high-voltage synthesized powder charge were used. The dependence of the content of microdispersed powder on the adhesive, physical and mechanical properties, and residual stresses of epoxy composites has been investigated. It has been proved that for the formation of a composite material or protective coating with improved adhesive and cohesive properties, the optimal particle content is 0.05–0.50 parts by weight per 100 parts by weight of the ED-20 epoxy oligomer. Such materials are characterized by increased mechanical strength and the ability to resist static and dynamic loads, since their properties are significantly increased compared with the matrix. The obtained results of experimental studies of physical and mechanical properties of composite materials are consistent with the test results of samples with adhesive characteristics, indicating their reliability.
A study of the influence deformation of the drilling riser on the longitudinal oscillations of the drill string
Authors: Slabyi О. О.
Published: March 2020

The article deals with the study of the effect of drilling riser transverse vibrations on the longitudinal vibrations of the drill string and the change of the dynamic component of weight on the bit when drilling wells from floating drilling vessel in deep sea conditions. The impact assessment was carried out by comparing the results of the simulation of the drilling system in the software based on the Modelica language. For this purpose, a simulation model has been created to enable the study of the operation of the «drill ship – riser wire tension system – drilling riser – drill string heave compensator – drill string» system in the case of irregular sea agitation obtained from decomposition the JONSWAP energy spectrum. The influence of the deformation of the drilling riser on the axial vibrations of the drill string is taken into account by introducing into the "classical" equation of the axial vibrations of the drill string the nonlinear term of the longitudinal-transverse strain. The drill string transverse deformation was determined based on the assumption that the axes of deformation of the drilling riser and drill string were coincident in the course of operation. A series of simulation experiments was carried out in the case from three to six WMO sea state code, absence of action of sea currents and active mode of work of the drill string heave compensator. The obtained results show that the greatest influence of the deformation of the drilling riser on the axial vibrations of the drill string is observed in the section at the level of the well head, where the amplitude of longitudinal vibrations increases up to 4 times. In general, the deformation of the drilling riser causes the growth of the dynamic impact factor of weight on the drill bit to increase by 4-7% for the investigated structure of the drilling system.
Research on energy efficiency of operation of city gas networks
Authors: Grudz Ya. V. , Stasyuk R. B. , Krill M. Ya.
Published: March 2020

The task of choosing the criterion of energy efficiency of operation of city gas networks of high and medium pressure, under the condition of transition to the system of individual energy supply is set and solved. It is shown

that in conditions of substantial increase of prices for natural gas and deepening of its deficit, the city gas network is often not able to provide consumers with energy in a given volume, so the approach to forecasting its operating modes should fundamentally change. First of all it concerns the field of permissible modes, which in such conditions considerably expands. Given the reloading of the gas distribution network as a result of changing the nature of gas consumption, a large role is given to the criteria for energy efficiency of gas transportation and to ensure maximum operational reliability while being within the scope of optimal maintenance.

In order to assess the energy efficiency of gas transportation by gas pipelines of a distribution network, it is suggested to use the notion of the net efficiency coefficient, which is determined by the ratio of useful work performed when providing a given volume of gas transportation by pipelines to total energy consumption. It is shown that the efficiency of the distribution network or its individual elements differs fundamentally from the coefficient of its hydraulic efficiency, which is a characteristic of the technical state of the system. On the basis of analytical studies, the correlation between them is established.

Calculated dependencies are proposed for determining the coefficient of hydraulic efficiency of a branched gas pipeline as an element of an urban gas distribution network. The influence of various factors on the value of the coefficient of hydraulic efficiency of the urban gas distribution network has been analyzed. The examples of calculating the efficiency of the network are given, conclusions on improving the efficiency of operation are made.
Enhancement of identification method of natural gas pipeline transportation hazardous object
Authors: Zapukhliak V. B. , Stasiuk R. B. , Melnychenko Yu. H. , Pyrig Т. Yu. , Bereza D. P.
Published: March 2020

The prevention of natural and man-made emergencies, which can be accompanied by numerous numan and material losses and disruption of living conditions, is one of the important nowadays problems and needs to be studied. The pipeline transport of hydrocarbons constitutes a significant man-made hazard. One way to reduce the

risk of emergencies at pipeline facilities is to identify potential sources of danger in a manner of potentially hazardous objects certification. It is also known that any renovation, refurbishment of gas and oil pipeline facilities as well as theirs intended end-use alteration require proper identification and declaration of theirs safety. There has been recently being a very high need in compressor stations switching lines reconstruction that often is accompanied by construction of the appropriate connection branches of the pipeline in order to implement reversed transportation of natural gas and these objects should be consequently identified. Thus, the analysis regarding existing methods of higher danger objects identification for pipeline transport and the total mass evaluation of hazardous substances for such objects is provided. It is established that the existing models do not take into account the gas compressibility factor, the pressure drop in the gas pipeline after section cut-off, the size of the equivalent diameter of leaks and some others. A model is proposed to determine the total mass of gas contained in a section of a pipeline between linear shutdown valves and the mass of gas that can be lost over a time required to detect a leakage and close linear shutdown valves. As a result of proposed model implementation a newly built connection branch between the main line and the inlet of the compressor station, being constructed for reversed gas transportation implementation, was identified as a potentially dangerous object.
MATHEMATICAL MODEL OF SPEED DATA TRANSMISSION FROM SEGMENT LENGTH OF SPECIALIZED G3-PLC DIGITAL NETWORK
Authors: Babchuk S. M. , Nezamay B. S.
Published: March 2020

Power Line Communication (PLC) systems are actively evolving and becoming more and more widespread worldwide. They are used in the automation of technological processes, the organization of video surveillance systems and to control the "smart" home. The G3-PLC provides high-speed and high-reliability long-distance communication over the existing power grid. Due to the fact that G3-PLC provides the ability to transmit data including through transformers, infrastructure costs are reduced. In addition, the G3-PLC network can support IPv6, which will allow the G3-PLC to easily integrate into common IPv6-based communication lines in the future. G3-PLC-based bilateral communications networks can provide grid operators with intelligent monitoring and control capabilities. Operators will be able to monitor electricity consumption across the network in real time, apply variable tariff schedules and set limits on electricity consumption. In turn, consumers will be able to control electricity consumption in real time. By using variable tariffs, users can reduce their electricity consumption during peak use. The G3-PLC dedicated digital network can be used in process automation systems where traditional or traditional data transmission is difficult or impossible. As a result of the research, a polynomial mathematical model was found that best reflects the change in data rate depending on the length of the G3-PLC network segment. It is also found that for the simplified calculation, a linear model determined during the studies can be used. The established mathematical models of data transmission rate dependence on the segment length of the G3-PLC dedicated digital network will contribute to better design of G3-PLC-based networks.
VIBRATION FREQUENCY DENSITY CONTROL METHOD IN VIBRATION CONDITIONS
Authors: Oliinyk O. Yu.
Published: March 2020

The use of existing vibration frequency measuring instruments for monitoring technological parameters inside apparatus and equipment is limited due to the presence of vibrations and industrial noise. The lack of data on the use of part of the technological apparatus as flow resonators through the unexplored basic analytical equations for determining the amplitude-frequency characteristics of such resonators determined the direction of these studies. The article is devoted to studies aimed at establishing the relationship between the vibrational field of the resonator, which is used as part of the technological apparatus with a controlled environment, and its reaction in the form of a change in the frequency or amplitude of the resonator’s own vibrations, which carries information about the properties of the substance in the apparatus. The experimental setup diagram, experimental methodology, and data on determining the oscillation frequency of the resonator under vibration conditions for metallic (corrosion-resistant steel) and non-metallic (organic glass) resonators are presented. The curves obtained from the experimental values were approximated using linear and hyperbolic approximations. It was found that the use of hyperbolic approximation reduces the average approximation error by more than six times. It was found that the error of the hyperbolic approximation error does not exceed 0.022% for a metal resonator and 0.05% for an organic glass resonator. The conducted experimental studies confirm the presence of a determinate coupling of the measured frequency characteristics of the resonator with the density, which was measured inside the equipment. The obtained data was used to develop the scientific and methodological foundations of the vibrational frequency control method in conditions of vibration using a part of the device as a resonator of the vibrational frequency sensor.
Stosunki gospodarcze i handlowe ZSRR – Niemcy w latach 1918–1940 (część 2)
Authors: Klimiuk Zbigniew
Published: March 2020

The author analyzes in his paper the economic and trade relations between Germany and the Soviet Union in the period of 1918–1944. During this period trade relations with Germany constituted a continuation of relations between Tsarist Russia and Germany before World War I. The German-Soviet Economic Agreement of October 12, 1925, formed special conditions for the mutual trade relations between the two countries. In addition to the normal exchange of goods, German exports to the Soviet Union were based, from the very beginning, on a system negotiated by the Soviet Trade Mission in Berlin under which the Soviet Union was granted loans for financing additional orders from Germany. Trade with the Soviet Union, promoted by the first credit-based operations, led to a dynamic exchange of goods, which reached its highest point in 1931. In the early 1930s, however, Soviet imports decreased as the regime asserted power and its weakened adherence to the disarmament requirements of the Treaty of Versailles decreased Germany’s reliance on Soviet imports. In addition, the Nazi Party’s rise to power increased tensions between Germany and the Soviet Union. In the mid-1930s, the Soviet Union made repeated efforts at reestablishing closer contacts with Germany. The Soviets chiefly sought to repay, with raw materials the debts which arose from earlier trade exchange, while Germany sought to rearm, therefore both countries signed a credit agreement in 1935. That agreement placed at the disposal of the Soviet Union until June 30, 1937 the loans amounting to 200 million Reichsmarks which were to be repaid in the period 1940–1943. The Soviet Union used 183 million Reichsmarks from this credit. The preceding credit operations were, in principle, liquidated. Economic reconciliation was hampered by political tensions after the Anschluss in the mid-1938 and Hitler’s increasing hesitance to deal with the Soviet Union. However, a new period in the development of Soviet-German economic relations began after the Ribbetrop–Molotov Agreement, which was concluded in August of 1939.
From visible pasts to an invisible presence: new criminological reality after planetary cyber attack 12/05/17 Wannacry
Authors: Zhesterov Pavel
Published: March 2020

The fourth industrial revolution is transforming crime and fight against it, causing fundamental consequences for research in the field of criminal law. Under the conditions of the second decade of the 21st century, the terms ‘Internet’, ‘information and telecommunications network’, ‘electronic network’, ‘communications facility’, ‘mobile communications’ are no longer an IT specialist dictionary, in the meantime they affect the doctrine of criminal repression and integrate into a scientific turnover of specialists in the field of criminal law and criminology. Transformation of crime has caused serious gaps, both in the theory of criminal law and in criminal procedural and criminal executive law inextricably bound with it. The emergence and exponential development of the Internet, electronic communications, control and tracking systems and many other technical achievements create for researchers three types of problems that need to be discussed and resolved. First, the problem of national sovereignty in criminal matters (the operation of criminal law in space) and jurisdiction, which are in contradiction in the boundless cyberspace. Secondly, the prognostic problem, which urges not only to forecast the influence of modern technologies on substantive criminal law, criminal procedure, execution of criminal punishment, but also to anticipate the general impact of technology on Russian society and the way of life of its members. Thirdly, the problem of expenses resulting from the introduction of high-tech crime prevention measures, the cost of which is constantly growing. The interdependence of these problems should form the basis of criminal law research in the era of augmented reality under the conditions of exponential growth of cyber threats directed at citizens, businesses and governments.
The Belarusian leadership, his country and squalor as depicted in the work of young Belarusian prose writers
Authors: McMillin Arnold
Published: March 2020

This article reviews some of the recent texts of young Belarusian prose writers about leadership, the country itself, squalor and alcohol abuse. The attitudes to the Leader in this highly varied selction of stories are at best humorous and more often disrespectful, whilst the picture of Belarus given is of a backward, sometimes squalid country with serious social problems, like violence and excessive drinking.
Co roku to samo… Z historii orędzia noworocznego w Polsce, Niemczech i Rosji
Authors: Noińska Marta
Published: March 2020

New Year’s address is one of the most conventionalized genres of political communication. The aim of the article is to describe the history of televised New Year messages of the country’s leader in Poland, Russia and Germany, with particular emphasis on the iterative motifs and signs present in their verbal and non-verbal layer. The leaders often use the same expressions, cite the same historical events, refer to the same authorities and discuss similar socio--political issues. Moreover, montage and scenery are also subject to only slight modifications. The author also draws attention to the fact that as a ritual and conventionalized genre New Year’s address often becomes the subject of parody.