bluuebunny/crossref_metadata_2025 huggingface dataset:
Evaluation of Anti-cancer and Pro-apoptotic Activities of Iranian Green Tea Extract Against A549,PC3, and MCF-7 Cancer Cell Lines
Authors: Safari Fatemeh , Rabieepor Masomeh , Jamalomidi Fatemeh , Baghaeifar Zahra , Khodaei Leila
Published: January 2020

Introduction: Green tea contains active polyphenols including catechins. The goal of the current study was to evaluate anti-cancer effects of Iranian green tea extract (IGTE) on 3 human cancer cell lines including A549, PC3, and MCF-7. Methods: First, Camellia sinensis was obtained from Lahijan, a city in the north of Iran and then IGTE was prepared. Next, catechins of IGTE were determined using high-performance liquid chromatography (HPLC). Finally, the cell viability of different cancer cells was evaluated by treatment with IGTE at concentration between 100 and 1000 µg/mL for 72 hours using MTT assay. Cell death of treated cancer cells was assessed by DAPI staining and RT-PCR method. Results: Our results demonstrated the potential anti-tumor activity of IGTE on MCF-7 cells (IC50= 400 µM), A549 cells (IC50= 500 µM), and PC3 cells (IC50= 600 µM), respectively. Chromatin damages within the nucleus of the treated cancer cells were shown. In addition, we found that IGTE induced apoptosis by up-regulation of Bax (a pro-apoptotic protein) and down-regulation of Bcl2 (an anti-apoptotic protein). Conclusion: Herein, we showed that IGTE is a potent natural product with anti-tumor activity on breast, lung, and prostate cancer cells. The efficacy of current therapies against cancer is limited by a range of adverse effects, toxicity, and drug resistance; therefore, new therapeutic strategies and more effective agents, particularly with natural origin, are desired and green tea may be a potent candidate in the field of cancer therapy
Analysis of a greenhouse thermal performance using dynamic simulations
Authors: Barragán-Medrano Juan Carlos , Rodríguez Muñoz Norma Alejandra , Najera-Trejo Mario , Escobedo-Bretado Jorge Alberto , Martin-Domínguez Ignacio Ramiro , Venegas-Reyes Eduardo , Ortega-Ávila Naghelli
Published: January 2020

Four different shapes of a 182 m2 research greenhouse were analyzed using dynamic simulations. The thermal performance was evaluated using different cover materials at an equal floor area. In developing countries, the selection of the greenhouse shape, structure, and cover material generally is made based on the availability of the materials and considering the initial investment costs. The greenhouse is located on a cold semi-arid (BSk) climate according to the Köppen climate classification. This study aimed to determine the best choice of the greenhouse shape and cover material according to a technical-economic analysis. The analysis was conducted from a technical-economic perspective for this specific climate region. The results show the heating and cooling energy consumption for different cover materials and greenhouse shapes. The economic analysis was made to assess the investment and operative costs through the life span of the greenhouse.
Principales residuos de medicamentos generados en los hogares y su potencial ecotóxico en Tuxpan, Veracruz
Authors: Sanabria Pérez Francisco Javier , Alanís Méndez José Luis , Pech-Canché Juan Manuel , Solis Maldonado Carolina
Published: January 2020

Los medicamentos alopáticos de uso doméstico son contaminantes emergentes que, al desecharlos incorrectamente, generan impactos ambientales negativos. En México, los estudios están enfocados mayormente en efluentes hospitalarios o de industrias farmacéuticas, mientras que los domésticos han sido poco abordados. Con el objetivo de describir la ecotoxicidad de los medicamentos en Tuxpan, Veracruz, se aplicaron encuestas a los hogares. Se identificó que los medicamentos son almacenados de manera incorrecta y desechados junto con el residuo domiciliario o drenaje. La población desconoce las farmacias autorizadas para el acopio de medicamentos caducos, favoreciendo así el ingreso de medicamentos a los ecosistemas del municipio. Los antiinflamatorios no esteroideos como el paracetamol y el ácido acetilsalicílico resultaron los más presentes en los hogares junto con antibióticos, antihipertensivos y anticonceptivos. Se identificó que los grupos farmacológicos presentes en los hogares poseen gran potencial ecotóxico sobre organismos acuáticos y ecosistemas, tales como manglares y arrecifes.
Investigation on Indirect Tensile Test of Asphalt Mixture Based on the Discrete Element Method
Authors: Wu Shuyin , Xu Gang , Yang Jun , Yang Ruochong , Zhu Jipeng
Published: January 2020

The indirect tensile test is commonly used to evaluate crack and fatigue resistance of asphalt mixtures. However, laboratory tests are time-consuming and laborious in general. Numerical simulation provides a technical way for studying the mechanical behavior of asphalt mixtures. In this research, a laboratory test and discrete element method were used to explore the effects of temperature, air void content, loading rate, and the homogeneity of a mixture on the splitting strength of asphalt mixtures. For asphalt mixtures, a three-dimensional random modeling method and two-dimensional modeling method based on X-ray computed tomography and digital image processing were developed. Also, a homogeneity evaluation index based on ring segmentation was proposed. The results show that an increase in loading rate and decrease in temperature resulted in a significant increase in splitting strength. With an increase in voids, the splitting strength of an asphalt mixture decreased. The Pearson correlation coefficient indicates that there seems to be no clear connection between splitting strength and homogeneity, but there is a significant correlation between the homogeneity and differences in the splitting strength.
Paisagem, Fotografia e História: As transformações ocorridas no Faxinal da Conceição, Rebouças-PR (1960 – 2017)
Authors: Silva Fabio Marcelo Andrade
Published: January 2020

A produção tem como finalidade investigar e perceber elementos que sofreram mudanças no ambiente faxinalense do faxinal da Conceição, que se encontra desagregado desde o final da década de 1980. Como fonte, utilizou-se fotografias para evidenciar algumas alterações decorrentes do processo de desestruturação e de desagregação do criador, bem como os efeitos da chegada da tecnologia, que resultou no aparecimento das cercas de arame, na monocultura de soja, feijão e milho. Todos esses fatores provocaram redução da mata nativa.Palavras-chave: Faxinal da Conceição, Fotografia, Paisagem. AbstractThe production aims to investigate and perceive elements that have undergone changes in the faxinal environment of Conceição's faxinal, which has been disaggregated since the end of the 1980's. As a source, photographs were used to highlight some changes resulting from the process of disruption and as well as the effects of the arrival of the technology, resulting in the appearance of the wire fences, the monoculture of soybeans, beans and corn, which caused a reduction of the native forest.Keywords: Faxinal da Conceicão, Photography, Landscape.
A aliança dos enjeitados: o casamento na Freguesia da Cidade do Natal – Capitania do Rio Grande do Norte (séculos XVIII e XIX)
Authors: Torres de Paula Thiago Do Nascimento
Published: January 2020

O objetivo desta pesquisa é examinar o perfil do casamento dos enjeitados na freguesia da Cidade do Natal, localizada na capitania do Rio Grande do Norte, especificamente entre os anos de 1727 e 1835. Frisando ainda, que era enjeitado ou exposto qualquer indivíduo que quando recém-nascido tenha sido abandonado. Com isso, as fontes utilizadas no processo de investigação foram: os assentos de batismo, assentos de casamento, termos de vereação, livro de tombo da igreja matriz da freguesia, entre outras. Os procedimentos utilizados durante os estudos, foram – o fichamento sistemático de informações e transcrição documental. Por fim, foi possível identificar um baixo percentual de casamento entre os enjeitados, que os enjeitados seguiam a sazonalidade dos casamentos da freguesia, que ser enjeitado era um tipo de marca neutra, não um estigma que permitisse o matrimônio.  Palavras-chave: Casamento; Enjeitado; Freguesia.    AbstractTherefore, the aim of this study is to examine the marriage profile of the rejected ones in the Parish of the City of Natal, located in the Capitaincy of Rio Grande do Norte, specifically between 1727 and 1835. It is important to highlight that it was rejected or exposed any individual who was abandoned right after birth. Thus, the sources used in the investigation process were: baptismal registers, wedding registers, city hall terms, The first Registry Book of the Main Church of the Parish, among others. The procedures used along the studies were – systematic registration of information and document transcription. At last, it was possible to identify a low percentage of weddings among the reject ones, they follow the flow of seasonality concerning wedding in the parish, the rejected ones were a type of neutral mark, not a stigma which allowed the wedding.Keywords: Wedding; Rejected; Parish.
Os “clássicos” e a violência simbólica como colonialidade do saber: o caso do Visconde de Taunay
Authors: De Souza Matheus Vargas , Santana Elisa Da Silva
Published: January 2020

Este trabalho tem por objetivo propor uma interpretação da figura do Visconde de Taunay que agregue os conceitos de violência simbólica, colonialidade do saber e discurso patrimonial autorizado. Com efeito, discutiremos a relação entre a elite administrativa do Império e os processos de exclusão inerentes ao sistema educacional da época, levando em consideração os usos da Antiguidade como fator de exclusão, de distinção social e, desta forma, de violência simbólica, no contexto de um mundo periférico no cenário internacional.Palavras-chave: Visconde de Taunay; Violência Simbólica; Colonialidade do Saber; Recepção dos Clássicos. AbstractThis work proposes an interpretation of Viscount of Taunay’s figure with the help of the concepts of symbolic violence, coloniality of knowledge and authorized heritage discourse. In fact, we discuss the relation between the administrative elite of the Empire and the process of exclusion inherent to the education system of that time, considering the uses of Antiquity as exclusion factor, so as of social distinction and, this way, of symbolic violence in the context of a peripheral world in the international sphere.Keywords: Viscount of Taunay; Symbolic Violence; Coloniality of Knowledge; Classical Reception.
A força da mulher argentina: resistência e luta política nas Madres de Plaza de Mayo e no grupo #NiUnaMenos
Authors: Costa Caroline Rios
Published: January 2020

As trajetórias femininas na vida pública vêm ganhando cada vez mais espaço, com mulheres do mundo tomando as ruas como forma de luta e resistência. Na Argentina, dois exemplos emblemáticos servem como espelho para outros movimentos: as Madres de Plaza de Mayo e as feministas do Ni Una Menos. Criados em diferentes contextos sociais, faixas etárias e motivações políticas, estes grupos se tornaram estandartes da luta política e reivindicação a nível federal, e até mesmo global. Similaridades e diferenças entre os dois grupos devem ser observadas para entender de forma adequada suas constituições enquanto agentes sociais e políticos. Além disso, pretendemos perceber como essas mulheres, jovens e senhoras, transformaram a questão do feminino e do gênero em sinônimo de uma luta frente a uma sociedade patriarcal em todo o mundo.Palavras-chave: Gênero, Resistência, Ni Una Menos, Madres de Plaza de Mayo AbstractWomen's trajectories in public life have been gaining more and more space, with women of the world taking over the streets as a form of struggle and resistance. In Argentina, two emblematic examples serve as a mirror to other movements: the Madres de Plaza de Mayo and the feminists of Ni Una Menos. Built on different social contexts, age groups, and political grounds, have become banners of political struggle and claim at federal, and even global, level. Similarities and differences must be observed to properly understand their constitutions as social and political agents. In addition, we intend to understand how these women, young and old, have transformed the issue of the feminine and gender into a struggle that clashes with a worldwide patriarchal society.Keywords: Gender, Resistance, Ni Una Menos, Madres de Plaza de Mayo
FARKLI ORANLARDA PEYNİR ALTI SUYU KULLANIMININ BEYAZ VE TAM BUĞDAY UNLARINDAN ÜRETİLEN EKMEKLERİN BAZI ÖZELLİKLERİ ÜZERİNE ETKİSİ
Authors: CANSIZ Zeynep , CANDAL Cihadiye , MUTLU Ceren , ARSLAN TONTUL Sultan , ERCAN Recai , ERBAŞ Mustafa
Published: January 2020

Dünya genelinde sağlık sorunlarının artışı, yaşam
kalitesini bozan beslenme ve çevre sorunlarıyla ilişkilendirilmektedir. Bunun
sonucu olarak, insanların sağlıklı bir çevreye ve zengin besin içeriğine sahip
gıdalara talebi artmaktadır. Bu çalışmada, beyaz un ve tam buğday unu ile
üretilen ve üretim aşamasında su yerine beş farklı oranda (%0-kontrol, %25,
%50, %75 ve %100) peynir altı suyu (PAS) ilave edilerek besinsel içeriği
zenginleştirilen ekmeklerin fiziksel, kimyasal ve duyusal özelliklerinde
meydana gelen değişimlerin ve PAS’ın hamur oluşturma suyu olarak
kullanılabilirliğinin araştırılması amaçlanmıştır. Araştırma sonucunda PAS
oranının artmasıyla; ekmeklerin kabuk renklerinin koyulaştığı, HMF içeriğinin
arttığı ve sertlik değerinin azaldığı belirlenmiştir. Ayrıca PAS kullanılarak
üretilen tüm ekmekler panelistler tarafından 5 puanlık hedonik skalada orta
değer olan 3 ve üzerinde puanlanmıştır. Sonuç olarak; PAS’ın ekmek üretiminde
%50’ye kadar hamur suyu ikamesi olarak kullanılabileceği ve böylelikle besin
içeriğince zengin olan bu ürünün çevreye atık olarak salınması yerine hamura
katılarak ekmeğin besleyici özelliklerini ilave masraf olmadan
geliştirebileceği değerlendirilmiştir.
YÜKSEK BASINÇ HOMOJENİZASYON İŞLEMİ UYGULANMIŞ FINDIK PROTEİNLERİNDEN ÜRETİLEN YENİLEBİLİR FİLMLERİN MEKANİK VE BARİYER ÖZELLİKLERİ
Authors: SARICAOĞLU Furkan Türker
Published: January 2020

Bu çalışmada, yüksek basınç homojenizasyon (YBH) işlemi
%4 fındık proteini içeren süspansiyonlara 0, 25, 50, 75, 100 ve 150 MPa
düzeylerinde uygulanmış ve bu süspansiyonlardan üretilen yenilebilir filmlerin
optik, mekanik, bariyer ve mikro-yapısal özellikleri belirlenmiştir. YBH işlemi
protein süspansiyonlarının partikül boyut dağılımlarında önemli bir azalma
sağlamış ve daha homojen bir protein süspansiyonu oluşturmuştur. Elde edilen
filmlerin kalınlıkları artan basıncın etkisiyle kısmen artış sergilerken, L*
ve b* renk değerlerinde azalma tespit edilmiştir. Basıncın 100 MPa
düzeyine kadar çıkması filmlerin ışık geçirgenliğini arttırmış, ancak 150 MPa
düzeyinde kontrole yakın bir değer belirlenmiştir. Fındık proteini
süspansiyonlarına uygulanan YBH işemi, üretilen filmlerin su buharı
geçirgenliklerini azaltırken, mekanik özelliklerini iyileştirmiş ve bu durum
mikro-yapı görüntüleri ile doğrulanmıştır. Protein süspansiyonlarına 75 ve 100
MPa düzeylerinde YBH işleminin uygulanması üretilecek yenilebilir filmlerin
mekanik ve bariyer özelliklerini iyileştirme potansiyeline sahiptir.
Böylelikle, bu filmlerin gıda ambalajı olarak kullanılabilme potansiyellerinde
artış söz konusu olabilecektir.
The Uses of Genre
Authors: Healey Ryan , Jones Ewan , Nulty Paul , Recchia Gabriel , Regan John , Bolla Peter de
Published: January 2020

This paper presents a computational method for assessing the uses of the category “genre.” It takes as its example the long-standing “Adam Smith” problem, which seeks to settle whether Smith’s two major works, The Theory of Moral Sentiments and The Wealth of Nations are compatible with each other and can be seen as contributing to a larger “system” of inquiry embarked upon by Smith.
Die dysfunktionalen Wirkungen von Managementinstrumenten
Authors: Julmi Christian , Zuraw Stefan
Published: January 2020

Manager setzen oftmals Managementinstrumente zur Unterstützung der Ausübung der Managementfunktionen ein. Managementinstrumente versprechen eine Vereinfachung der Führungsherausforderungen und eine Verbesserung des Unternehmenserfolges. Neben den gewünschten positiven Effekten können allerdings auch vielfältige unerwünschte, dysfunktionale Neben- bzw. Folgewirkungen entstehen. In diesem Artikel werden diese anhand von vier verbreiteten Managementinstrumenten dargestellt und es werden Möglichkeiten zu ihrer Vermeidung bzw. Reduzierung aufgezeigt.
Wer schmeißt hin und warum?
Authors: Horstmann Felix
Published: January 2020

Die Studienabbrecherquote in Deutschland ist hoch: Knapp jeder dritte Studierende verlässt die Universität ohne Abschluss. Das Deutsche Zentrum für Hochschul- und Wissenschaftsforschung (DZHW) hat ein theoretisches Modell entwickelt, das sich explizit dem Phänomen „Studienabbruch“ widmet. Es versucht, Bedingungsfaktoren und Motive des Studienabbruchs sowie die Zusammenhänge der Determinanten zu visualisieren.
Marktanalyse und -auswahl im Rahmen der Internationalisierungsentscheidung eines Discounters
Authors: Arnold Brit
Published: January 2020

Der Lebensmitteldiscounter „Elbo“ (fiktives Unternehmen) möchte seine bislang nationale Tätigkeit auf den internationalen Markt ausweiten. Die vorliegende Fallstudie zeigt das Vorgehen des Unternehmens bei der Analyse und Auswahl geeigneter Märkte auf. Die Phasen Vorselektion und Grobauswahl (mithilfe des Punktbewertungsverfahrens) werden näher vorgestellt. Die Lösungen zu den am Ende gestellten Aufgaben enthält Teil 2 im folgenden WiSt-Heft, Nr. 2-3/2019.
Basiszinssatzermittlung in der Bewertungspraxis - Kritische Analyse vor dem Hintergrund von Theorie und IDW-Empfehlungen
Authors: Helms Nils
Published: January 2020

Zur Ermittlung des Basiszinssatzes bieten sich im Rahmen der Unternehmensbewertung unterschiedliche Möglichkeiten an. Im ersten Teil des Beitrags wird analysiert, welche Vorgehensweise aus theoretischer Sichtweise zur Basiszinssatzermittlung zu bevorzugen ist. Darauf aufbauend wird die Basiszinsermittlung gemäß IDW erläutert und der theoretischen Perspektive gegenübergestellt. Im zweiten Teil des Beitrags wird die konzeptionelle Vorgehensweise mit der Verfahrensweise der Bewertungspraxis verglichen. Dazu werden 214 Gutachten empirisch ausgewertet.
Künstliche Intelligenz: Erscheinungsformen, Nutzungspotenziale und Anwendungsbereiche
Authors: Wirtz Bernd W. , Weyerer Jan C.
Published: January 2020

Künstliche Intelligenz bietet Unternehmen ein erhebliches Chancenpotenzial und hat sowohl in der Unternehmenspraxis als auch in der wissenschaftlichen Forschung besondere Bedeutung gewonnen in den letzten Jahren. Als Querschnittstechnologie durchdringt künstliche Intelligenz zunehmend die gesamte Wirtschaft und Gesellschaft und ist somit für alle Branchen und Lebensbereiche relevant. Vor diesem Hintergrund beschreibt der Beitrag die wichtigsten Erscheinungsformen künstlicher Intelligenz und stellt deren Nutzungspotenziale und Anwendungsbereiche in unterschiedlichen Branchen dar, bevor in einem folgenden Beitrag die Chancen, Risiken und strategische Governance im Zusammenhang mit künstlicher Intelligenz betrachtet werden (siehe WiSt, Nr. 11/2019, S. 4 ff.).
Die Konfigurationsanalyse in der betriebswirtschaftlichen Forschung
Authors: Richter Philipp Clemens
Published: January 2020

Die Konfigurationsanalyse ist ein wichtiger Bestandteil der betriebswirtschaftlichen Forschung. In den vergangenen Jahren hat sie insbesondere durch eine neue Methode, den mengentheoretischen Ansatz, weitere Bedeutung erreicht. Dieser Beitrag widmet sich den Grundlagen der Konfigurationsanalyse, diskutiert den mengentheoretischen Ansatz und zeigt durch praktische Beispiele auf, wie dieser Ansatz in der Forschung Anwendung findet.
Online Visual Merchandising (OVM)
Authors: Redler Jörn
Published: January 2020

Als wichtiger Vertriebs- und Kommunikationskanal steht der Onlineshop im Fokus. Besonders für Handelsunternehmen ist er oftmals die wesentliche und markenprägende Schnittstelle zum Kunden. Das Online-Visual-Merchandising befasst sich mit der Ausgestaltung des Onlineshop aus Marketingsicht. Es ist ein grundlegender, aber spezifischer Zugang, der einen theoretisch und praktisch relevanten Analyse- und Gestaltungsrahmen zur Verfügung stellt.
Unternehmensbewertung im Rahmen von M&A-Prozessen am Beispiel Bayer/Monsanto
Authors: Nothhelfer Robert , Kopp Felix
Published: January 2020

Trotz theoretisch effizienter Märkte sind Übernahmeprämien von über 30 % eher die Norm als eine Ausnahme. Die erwerbenden Unternehmen haben oft Schwierigkeiten ihren Investoren zu erklären, warum diese Prämien gerechtfertigt sein könnten. Diese Fallstudie beabsichtigt, einen Überblick über die gängigen Methoden der Unternehmensbewertung zu geben und den WACC-Ansatz auf den Fall Bayer-Monsanto anzuwenden.
Herdenverhalten aufgrund von Informationsexternalitäten
Authors: Stankau Katrin
Published: January 2020

Es wird das Modell von Bikhchandani/Hirshleifer/Welch (1992) zur Erklärung von Herdenverhalten aufgrund von Informationsexternalitäten speziell unter Verwendung von Log-Likelihood-Quotienten vorgestellt und damit das Entscheidungsverhalten der Akteure und die Voraussetzungen für die Entstehung von Herdenverhalten hergeleitet. Darüber hinaus wird die erwartete Anzahl berücksichtigter Informationen berechnet.
Gender Pay Gap
Authors: Horstmann Felix
Published: January 2020

Ein Mann verdient in Deutschland durchschnittlich rund 20 Prozent mehr als eine Frau – doch die Gender Pay Gap ist nicht überall gleich groß. Schaut man sie sich genau an, offenbart sich nicht nur ein interessantes Bild zwischen Ost und West.
Schichtende: Abschied von der deutschen Steinkohle
Authors: Häuser Wolfgang
Published: January 2020

Unter großer medialer Begleitung endete im Dezember 2018 das Zeitalter des deutschen Steinkohlebergbaus. Die Energiestatistiken AGEB zeigen, wie die energiewirtschaftliche Bedeutung der Steinkohle in den letzten Jahrzehnten signifikant abgenommen hat. Das Ende der heimischen Steinkohleförderung kam daher nicht überraschend. Da ein großer Anteil am CO2-Ausstoß immer noch auf Stein- und auch Braunkohle entfällt, steht nach dem Ende der deutschen Steinkohleförderung nunmehr der komplette Kohleausstieg bei der Stromerzeugung auf der politischen Tagesordnung, um die ambitionierten Klimaziele des Pariser Abkommens erreichen zu können.
Die Baldwin-Verzinsung
Authors: Kruschwitz Lutz , Lorenz Daniela
Published: January 2020

In nahezu allen Lehrbüchern zur Investitionstheorie findet man die Methode des internen Zinssatzes. Diese ist jedoch nicht frei von Schwachstellen, weshalb in der Literatur eine Vielzahl alternativer Verzinsungsmaße vorgeschlagen wurde. Gegenstand dieses Beitrags ist die Baldwin-Verzinsung, für welche wir ein formales Entscheidungskriterium entwickeln und dessen Anwendung illustrieren. Ein Vergleich der Baldwin-Verzinsung mit der Kapitalwertmethode zeigt, dass sich nicht notwendigerweise äquivalente Handlungsempfehlungen ergeben.
Einwanderung: Empirische Effekte internationaler Migration
Authors: Kuhn Britta
Published: January 2020

Die Löhne früherer Einwanderer leiden oft unter Neuankömmlingen, die Löhne Einheimischer meistens nicht. Das Qualifikationsniveau von Immigranten ist von Land zu Land sehr verschieden. Ihre Nachkommen schneiden am Arbeitsmarkt ähnlich wie die Eltern ab. Einwanderung ermöglicht nur eine kurzfristige demografische Entspannung. Die Fiskaleffekte der Immigration sind unklar, aber wohl eher gering. Das BIP profitiert bestenfalls schwach von Zuwanderung. Die institutionellen Herausforderungen wachsen mit der Heterogenität der Immigranten.
40 Jahre Europäisches Währungssystem
Authors: Schäfer Stefan
Published: January 2020

Das Europäische Währungssystem (EWS) war der erste nicht gescheiterte Versuch, die Währungsbeziehungen innerhalb der Europäischen Gemeinschaft zu integrieren. Entgegen anderslautenden Ankündigungen kam es über den Status eines gewöhnlichen Fixkurssystems nicht hinaus; als solches funktionierte es jedoch mehr als ein Jahrzehnt lang recht gut, bevor es 1992/93 in eine schwere Krise geriet.
Effizientes Datenmanagement mit der SPSS Syntax: Eine Einführung
Authors: Sarstedt Marko , Schütz Tobias , Raithel Sascha
Published: January 2020

IBM SPSS gehört zu den populärsten Statistikprogrammen im wirtschaftswissenschaftlichen Studium und in der Praxis. Viele Anwender führen ihre Analysen ausschließlich mit Hilfe der grafischen Benutzeroberfläche durch, obwohl mit Hilfe der SPSS Syntax viele Analysen schneller realisiert sowie automatisiert werden könnten. Dieser Beitrag bietet eine Einführung in die Arbeit mit der SPSS Syntax.
Betriebswirtschaftliche Bewertung von komplexen Infrastrukturinvestitionen: Glasfaseranschlussnetze im ländlichen Raum
Authors: Gerpott Torsten , Pastars Julia
Published: January 2020

In WiSt-Heft Nr. 4/2019, S. 57–61 wurden der zugrundeliegende Fall und die Aufgabenstellung beschrieben. Nachfolgend wird die Falllösung vorgestellt. Eine ausführliche Excel-Dokumentation der Berechnungen steht unter www.beck-shop.de/1379 kostenlos zum Download bereit.
Ist es sinnvoll, Mietpreise selektiv per Gesetzeinzufrieren?
Authors: Dullien Sebastian , Voigtländer Michael
Published: January 2020

Für viele ist Wohnen ein Grundrecht; die Höhe der Mieten spaltet die Bevölkerung. Während sie auf dem flachen Land vielfach sogar zurückgehen, klettern sie gerade in den Großstädten auf nie dagewesene Höhen. In Berlin gab es in diesem Jahr große Demonstrationen angeführt von Bürgerinitiativen. Von Verstaatlichung privater Wohnungsbauunternehmen ist die Rede. Eine andere Forderung ist das Einfrieren von Mieten durch den Staat. Der Berliner Senat hat zuletzt beschlossen, dass bestimmte Mieten in der Hauptstadt fünf Jahre lang nicht erhöht werden dürfen. Einige Politiker haben sogleich eine bundesweite Ausdehnung dieses Instruments gefordert. Die Ökonomen Sebastien Dullien und Michael Voigtländer sind unterschiedlicher Meinung, ob man Mietpreise selektiv per Gesetz einfrieren sollte.
Der Dieselskandal oder das Ethik-Problem moderner Unternehmensführung
Authors: Conrad Christian A.
Published: January 2020

Angesichts der Skandale bei Deutsche Bank, VW und anderen Automobilkonzernen scheint es in Deutschland mit der Managerethik nicht gut bestellt zu sein. Unethische Entscheidungen fallen auch zu Lasten der Gesellschaft. Woran liegt das? Einerseits besteht bei vielen Managern die Vorstellung, dass sich ethisches Verhalten nicht auszahlt andererseits, werden auch die falschen Manager befördert. Einem großen Teil fehlt die Persönlichkeit, um Führungskraft zu sein. Hinzu kommt eine variable Vergütung, die nur den kurzfristigen Erfolg belohnt.
Fallstudie zur Anwendung und Implementierung von Regalplatzoptimierung im Einzelhandel
Authors: Hübner Alexander , Schaal Kai N. , Düsterhöft Tobias
Published: January 2020

Händler wollen für jedes Produkt die im Regal zu platzierende Mengen optimal bestimmen, da dies Einfluss auf die Kundennachfrage und die operativen Kosten in der Filiale hat. Zur bestmöglichen Ausnutzung des verfügbaren Regalplatzes in den Filialen sind Einzelhändler daher auf Entscheidungsunterstützungssysteme angewiesen. In diesem Beitrag wird ein Fallstudie und ein Vorgehen zur Implementierung und Lösung von Regalplatzoptimierungsmodellen vorgestellt.
A two-dimensional limit theorem for Lerch zeta-functions. II
Authors: Genienė Danutė Regina
Published: January 2020

We prove a two-dimensional limit theorem for Lerch zeta-functions with transcendental and rational parameters.
Note on the prime divisors of Farey fractions
Authors: Kazakevičius Vytautas , Stakėnas Vilius
Published: January 2020

Let P1(n) ≥ P2(n) ≥· · · be the prime divisors of a natural number n arranged in the non-increasing order. The limit distribution of the sequences (log Pi(mn)/ log(mn), i ≥ 1) for m/n ꞓ 2 (lambda1; lambda2), n ≤ x, are considered. It is proved that under some conditions on lambdai the limit distribution of the sequences exists and is closely related to the Poisson–Dirichlet distribution.
On application of Cramer’s rule
Authors: Apynis Antanas
Published: January 2020

The article analyses a possibility of modification of Cramer’s rule. The modified formulas for the solution of a system of linear equations, with application of which the volume of calculation reduces,are suggested.
The problems of mathematics education at secondary schools and gymnasia
Authors: Apynis Antanas , Mazėtis Edmundas
Published: January 2020

The article reviews the ties between secondary schools/gymnasia and universities, and also discusses complementary mathematics education. Major attention is directed to the general mathematics curricula of general education and secondary education. A proposal of developing an integral mathematics education curriculum for gymnasium as well as withdrawing the state school graduation curriculum (by organising the examination under the general mathematics education curriculum) has been put forward.
The tendencies of the development of mathematics methodics in 5–6th grades of basic school on the aspect of interpretative pedagogy
Authors: Cibulskaitė Nijolė
Published: January 2020

By studying education methodology applied by teachers of mathematics it was researched how often mathematics teachers apply modern learning and teaching activities in 5–6th grades of basic school. The results of several researches performed in 2004–2010 are presented in this article and summarized in this aspect. The research results let draw the conclusions: mathematics teachers more frequently applied such traditional methods as independent work and self-control, the work with visual manuals; mathematics teachers must pay more attention to the control in pairs, work in groups, choose of the work’s variant, emphasize of historical elements, organization of mathematics excursions; the frequency of student’s work with computer in the classroom and at home and the project’s making is increasing now.
Web 2.0 technologies in education
Authors: Juškevičienė Anita
Published: January 2020

Information technology is a necessity in every activity, so the application of technology in education is expected to improve teaching and learning quality, student motivation and practical and theoretical knowledge aggregation. One of these types of technology are web 2.0 technologies,which are widely used in the world of teaching and learning process. The article analyzes the impact of technology to educational process, gives the varioususes of online technologies for education examples. The paper uses comparative analysis, research and other work synthesis, methods.
Using the supporting material during the examination
Authors: Kudžma Ričardas , Jakubonienė Lina
Published: January 2020

About twenty years ago all examinations at the Faculty of Mathematics of Vilnius University were oral. During the past years the situation has been changed radically – almost all examinations are writen. Written examinations can be open-book or closed-book. The older of autors of this article allows to prepare and to use during the mathematical analysis examinations the A4 sheet with specific information. The writen information can be from the knowledge level according to the Bloom’s taxonomy – definitions, formulations of theorems, formulae, but not solutions of problems, proofs of theorems. This sheet should be returned together with solutions of exams. The junior author investigated the preparation, usage and relation between the information in this A4 sheets with the results of exams in her Bachelor and Master theses.
The mathematic model of grades transfer from one grading scale to other
Authors: Lieponienė Jurgita , Kulvietienė Regina
Published: January 2020

The article analyzes the problems of the use of ECTS grading scale, presents the constructed mathematic model of grades transfer from one grading scale to other. This model is made on the ground of the ECTS grading table and converts the marks on the principle of most probable grade equivalent evaluating the rating of a mark within the group of analyzable grades.
Functional equations in the secondary school
Authors: Mačys Juozas Juvencijus
Published: January 2020

Secondary school in Lithuania goes over to modules in the mathematics syllabi. Teachers need various proof methods for solving problems of more complicated (olympiad) modules. The paperdiscusses the module of functional equations. The books and papers dealing with this question are pointed out. Some typical solving errors are discussed.
About the eﬀectiveness of mastery of mathematical information
Authors: Ostapenko A. , Januškevičienė Olga
Published: January 2020

Eﬀective interaction of students with information received in the lesson is the key to the success of mathematics teaching. Concrete methods in this direction are described in the article. The underlying thesis is the need for participation of the personality of teacher in this process.
The journal „Mūsų žinynas“ about applications of mathematics in military topography in 1922-1940: authors and their articles
Authors: Ažubalis Algirdas
Published: January 2020

Just after the end of the struggles for consolidation of the Independence, Lithuanian Army began care about development of military science. In addition to other sciences, a great attention was paid to applications of mathematics in military arts. In 1922-1940, journal of military science and history “Mūsų žinynas” (“Our Directory”) published 87 articles about various applications of mathematics in the Army. They included 27 articles on  application of mathematics in military topography. The articles were written by 14 known and 1 unknown authors. 14 known authors included 12 army officers and 2 civilians.
The new trigonometrical systems of Aleksandras Dambrauskas
Authors: Kalinauskaitė Nijolė
Published: January 2020

We review the description of trigonometrical functions via the systems of trigonometric lines as Aleksandras Dambrauskas has done in his book [5].
Mathematics in Vytautas Magnus University in 1940–1943
Authors: Pekarskas Vidmantas Povilas
Published: January 2020

On overview of pedagogical and methodical activities of Vytautas Magnus University mathematicians in 1940–1943 is given in this paper. Bibliographic data of Vytautas Magnus University mathematicians are supplemented by new facts. An analysis of the first and the third parts of J. Valukonis book “Lectures in High Mathematics” published in 1943 is presented in the paper. The second part of this book has not been found yet in Lithuania.
An investigation of the damage of polygons and surrounding forests caused by the splinters and bullets
Authors: Misevičius Gintautas , Puškorius Stasys , Vilutienė Valentina
Published: January 2020

Poligonuose dalis šovinių ir sprogmenų skeveldrų perskrenda apsauginius pylimus, kelia grėsmę saugumui, bei gadina ir žaloja vertingus išteklius. Darbe matematiniais metodais atlikta Kairių poligono aplinkinių miškų medžių pažeidimų kulkomis ir skeveldromis analizė. Pateiktos matematinės formulės kulkos nukrypimo nuotoliui nuo taikymo centro tikimybėms apskaičiuoti, saugaus pylimo aukščiui nustatyti, zonų, kuriose kulkų skridimo greitis gali būti pavojingas, pasiskirstymo modeliavime.
Contraction-free calculi for modal logics S5 and KD45
Authors: Andrikonis Julius , Pliuškevičius Regimantas
Published: January 2020

It is known that termination and backtracking are among the most important problems in constructing derivations in non-classical logics. In this paper contractionfree and backtracking-free sequent calculi for modal logics S5 and KD45 are presented and founded. These are index-style sequent calculi with some specific indexed axioms. The main new ideas in considered calculi are to use metavariables (along with natural numbers) as elements of indexes and to numerate by different natural number all the positive occurrences of modality 2.
Sequent calculus for logic of correlated knowledge
Authors: Giedra Haroldas , Sakalauskaitė Jūratė
Published: January 2020

Sound and complete sequent calculi for general epistemic logic and logic of correlated knowledge are presented in this paper.
Resolution for hybrid logics
Authors: Norgėla Stanislovas
Published: January 2020

We describe a resolution method and a procedure to transform formulae of some pure hybrid logics into their clausal form.
MCMC based modelling of queuing systems from empirical data
Authors: Landauskas Mantas , Valakevičius Eimutis
Published: January 2020

Markov chain Monte Carlo (MCMC) modelling technique requires one to be able to construct a proposal density. There is no universal way to achieve this. This paper considers the universal proposal selection technique based on the kernel density estimate. Two channel queuing system with a priority was modelled using this technique. Empirical data (the observed service times) and the rates of arrival processes are all the informationused for simulating the system.
On the experimental investigation of Pareto–Lipschitzian optimization
Authors: Mockus Jonas , Stašionis Justas
Published: January 2020

A well-known example of global optimization that provides solutions within fixed error limits is optimization of functions with a known Lipschitz constant. In many real-life problems this constant is unknown. To address that, we propose a novel method called Pareto Lipschitzian Optimization (PLO) that provides solutions within fixed error limits for functions with unknown Lipschitzconstants.In the proposed approach, a set of all unknown Lipschitz constants is regarded as multiple criteria using the concept of Pareto Optimality (PO).
Investigation of complex eigenvalues for a stationary problem with two-point nonlocal boundary condition
Authors: Skučaitė-Bingelė Kristina , Štikonas Artūras
Published: January 2020

The Sturm–Liouville problem with one classical and another two-point nonlocal boundary condition is considered in this paper. These problems with nonlocal boundary condition are not self-adjoint, so the spectrum has complex points. We investigate how the spectrum in the complex plane of these problems (and for the Finite-Difference Schemes) depends on parameters γ  and ξ  of the nonlocal boundary conditions.
Analysis of student WEB survey
Authors: Murauskas Gediminas , Radavičius Marijus
Published: January 2020

In the paper the problem of adjustment for nonresponse in a WEB survey is addressed. The study is based on Vilnius University student survey on quality assessment of information technology services. A conditional logistic regression model is applied along with traditional nonresponse adjustment methods.
Keserasian antar Bunyi dalam Konsep Fonologi Bahasa Arab al-Khalil Ibn Ahmad al-Farahidi
Authors: Saehudin Akhmad
Published: January 2020

This article is focus on the Arabic phonological concept wich was proposed by al-khalil Ibn Ahmad al-Farahidi in order to introduce the fluency of pronouncing Arabic words. According to al-farahidi the fluency of prononcing the Arabic words are formed through the grammatically arranged sentences, wich are built through the correct words. Mean while correct words are formed trough the exact placement of the sounds. This article will expose al-Farahidi's efforts in identifying the harmonious sound of Arabic words which finally form fluency of pronouncing the words.
Islam dan Budaya Banten
Authors: Irfani Fahmi
Published: January 2020

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ا لشحو بىة فى مىزان الخ حظ
Authors: ا بؤ ا لققا سم ا محمد
Published: January 2020

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Pendidikan Syair pada Masa Pra Islam
Authors: Abdullah Abdullah
Published: January 2020

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Satu Malaysia dalam Neraca Satu Ummah
Authors: Ramli Yusri Mohamad
Published: January 2020

The concept One Malaysia by Datuk Seri MOhd Najib Tun Abdul Razak has become a kinetic strength for the development of the kingdom under his ruling. With the vision of uniting the Malaydsians who are varied in religionrace, it becomes a key agenda in every action and consideration of the kingdom. From islamic point of view. Rasulullah saw had iniated the concept of One Umma to gain mutual objective as mentioned in the early article of Sahifah Madinah. From the idea and vision perpective, the concept of One Malaysia Fullfils sunnah Rasulullah saw and equals with Islam demandas. To keep the aspect of implementation, the concept needs to be valued in accordance with the model and  pratice of One Umma conducted by Rasulullah Saw.
Faktor Pendukung Terbentuknya Jaringan Perdagangan antar Kesultanan di Nusantara
Authors: Sulistiono Budi
Published: January 2020

The emergence of Islamic kingdoms/sultanates in the Nusantara (Indonesian archipelag), suchas SamuderPasai, Demak, Banten, Cirebon, MAtaram, Tidore, Gowa Tallo, and others are evidence that iIslam was accepted and spread throughout the Nusantara. The function of the former capital cities of Islamic kingdoms in the archipelago were to be maintained as trade center and the center of political power. In the end the cities changed into centers of educational activities with the emergence of traditional and modern institutions many religious sciences with various levels were studied  and gave birth to many prominent scholars who later became role models in their respective regions.
Media Sosial dalam Pembentukan Ketahanan Sosial Masyarakat Adat Kesepuhan Kawasan Taman Nasional Gunung Halimun
Authors: Fadhilah Amir
Published: January 2020

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Konsep Pertentangan Makna dalam Linguistik Modern dan Linguistik Arab
Authors: Yusuf Kamal
Published: January 2020

Abstrak Artikel ini akan membahas tentang pertentangan makna dan gagasan yang menyatakan bahwa pengertian antonimi telah direvisi. Pertentangan makna akan dibahas dalam dua perspektif, yaitu linguistic modern dan linguistik Arab. Menurut linguistic modern, pertentangan makna terjadi ketika dua kata atau lebih bertentangan dalam maknanya. Dalam sudut pandang ini, pertentangan makna dianggap sebagai dua bentuk yang saling bertentangan dalam maknanya. Maka munculah istlah antonym, komplementari, direksional, dan kontrari. Sementara itu, menurut linguistic arab, pertentangan makna dianggap sebagai satu bentuk kata yang memiliki pertentangan dalam maknanya. Fenomena inilah yang disebut dengan kontranimi (contranymy).---Abstract This article deals with oppositeness of meaning and the notion of antonymy is revised. The oppositeness of meaning is discussed further in two perspectives, i.e. modern linguistics and Arabic linguistics. According to modern linguistics, oppositeness of meaning is when two words or more contrary in meaning. In this view, oppositeness of meaning is assumed as two forms that opposite in their meaning. There are such as antonymy, complementary, directional, and contrary. Meanwhile, according to Arabic linguistics tradition, oppositeness of meaning is assumed one form that has contrary in meaning. This phenomenon is what so called contranymy.
Membincang Historiografi Islam Abad Pertengahan
Authors: Wahyudhi Johan
Published: January 2020

Abstrak Islam merupakan agama yang memiliki peradaban tinggi. Hal ini terlihat ketika kita membicarakan perkembangan ilmu pengetahuannya yang begitu menawan. Boleh dikatakan, modernisasi yang kita lihat sekarang ini tentu tidak dapat tergelar tanpa sumbangsih Islam. Bagaimanapun, Islam telah menorehkan tinta emas sebagai agama yang tidak saja menenggelamkan diri dalam ibadah ritualistik melainkan juga turut memperhatikan perkembangan umat manusia. salah satu hal yang menjadi perhatian Islam adalah perkembangan penulisan sejarah. Di abad pertengahan Islam, banyak ditemukan langgam-langgam historiografi yang berbeda dengan masa sebelumnya.---Abstract Islam is a religion which has a high civilization. it is can be seen when we talk about its developing knowledge. Hence, it can be said that modernization, as we see now day, is cannot be standing without the work of Islam. However, Islam had painted a masterpiece as a religion that is not only sinking itself in aspects of ritualistic but it also has a responsibility to fulfill the mankind’s need. One of them is the emerging of historiography. In the Islamic middle ages, there are many styles of historiographies which are different from previous era.
Borrowing Words in Newspaper Seputar Indonesia Desember 2009
Authors: Winarto Arif Budi
Published: January 2020

Abstrak Penelitian ini bertujuang untuk mengidentifikasi serapan kata bahasa Inggris dalam bahasa Indonesia. Objek dari penelitian ini adalah surar kabar Seputar Indonesia yang diterbitkan pada tanggal 27 bulan Desember 2009. Penelitian ini, hanya mengambil beberapa artikel untuk dianalisis kata-kata serapannya, karena banyak sekali artikel dalam surat kabar tersebut, seperti pendidikan, hiburan, olahraga, ilmu pengetahuan, teknologi, hobi, gaya hidup, politik dan berita internasional. Selain itu, penelitian ini dilakukan karena surat kabar ini lebih dikenal sebagai surat kabar yang sering menggunakan kata-kata baru atau bahasa serapan daripada surat kabar lain. Hasil penelitian ini menunjukan ada sekitar 45 bahasa serapana dari surat kabar  itu, yaitu perluasan, penyempitan,  persamaan makna dan kebanyakan di antara kata tersebut adalah kata serapan campuran, lima kata serapan yaitu duel, mode, model, target, dan survey serta tidak terjadi pergeseran pinjaman (loan Shift).---Abstract This research is aimed at identifying the English borrowing words from English into Indonesian. The object of this research is Indonesian newspaper, Seputar Indonesia, published on December 27th, 2009. This research, however, takes only certain articles to analyze in terms of borrowing words, since there are so many articles in it, such as education, entertainment, sport, science, technology, hobbies, lifestyle, politics and International news. In addition, this research is conducted for it is known as the Indonesia leading newspaper in using new words or borrowing words compared than the other newspapers. As the result, this research finds forty five borrowing words from the newspaper, namely extension, narrowing, same meaning and most of them are loan blend, five loanwords they are duel, mode, model, target, and survey and no loan shift. On the other hand, the change of meaning does not have regeneration and degeneration.
أغراض خطابة الإمام الخميني و خصائص أسلوبها
Authors: Iqbal Muhammad
Published: January 2020

Abstract Al-Khumayni is the first Iranian Supreme Leader had a big hand in the Iranian revolution. He was born on 24 September 1902 in Khomein, Markazi Province. Together with his followers in the city of Qum, al-Al-Khumayni began to build a political base against the royal family especially the Shah of Iran Mohammed Reza Pahlavi, who later became an important part of the power steering Iran's Islamic Revolution. The main weapon held by al-Khumayni was political speeches capable of moving masses in large numbers so as to make future milestone Iranian empire felled. He was a great orator capable of sorting out the words and put them into a strand of pearls that evoke a spirit listeners to dissolve in their struggle against the Iranian royal family and American intervention. The style of language in his speech (Uslub Khithaby) which was the rhetorical speech trigger the urge author to analyze it more deeply through one of his speeches was phenomenal "American intervention in Iranian affairs".---Abstract Al-Khumayni is the first Iranian Supreme Leader had a big hand in the Iranian revolution. He was born on 24 September 1902 in Khomein, Markazi Province. Together with his followers in the city of Qum, al-Al-Khumayni began to build a political base against the royal family especially the Shah of Iran Mohammed Reza Pahlavi, who later became an important part of the power steering Iran's Islamic Revolution. The main weapon held by al-Khumayni was political speeches capable of moving masses in large numbers so as to make future milestone Iranian empire felled. He was a great orator capable of sorting out the words and put them into a strand of pearls that evoke a spirit listeners to dissolve in their struggle against the Iranian royal family and American intervention. The style of language in his speech (Uslub Khithaby) which was the rhetorical speech trigger the urge author to analyze it more deeply through one of his speeches was phenomenal "American intervention in Iranian affairs".