bluuebunny/crossref_metadata_2025 huggingface dataset:
Kształtowanie się wiodących zakładów przemysłu cukierniczego w Krakowie do 1950 r.
Authors: Rachwał Tomasz
Published: February 2021

W okresie polski międzywojennej przemysł cukierniczy był jedną z najlepiej rozwiniętych bran! przemysłu w Krakowie. Do największych krakowskich fabryk wyrobów cukierniczych w tym czasie należały zakłady ,.A. Piaseckiego", ,,Sucharda". "Pischingera". Z tych 3 zakładów oraz z majątku zlikwidowanych fabryk "Helia" i "Kryształ"' w 195lr. utworzono funkcjonujące do dziś Zakłady Przemysłu Cukierniczego "Wawel" S.A., jako jedno z największych przedsiębiorstw tej branży w Polsce. Przedmiotem niniejszej pracy będzie analiza procesu kształtowania się wiodących zakładów przemysłu cukierniczego w Krakowie do 1950r. Główna uwaga zostanie zwrócona na problem, jak zakłady te zachowywały się w warunkach korzystnej koniunktury wzrostu gospodarczego, w latach wielkiego kryzysu gospodarczego, w warunkach okupacji i pierwszych latach powojennych. Poszczególne okresy charakteryzowały się odmiennymi uwarunkowaniami dla kształtowania się analizowanych firm, a wydaje się, że wiele podobnych sytuacji z lat pogłębiającego się kryzysu gospodarczego lat 30. można zauważyć obecnie, a latach transformacji gospodarki.
Lokalizacja zarządów i potencjał ekonomiczny wiodących firm zachodnio-europejskich
Authors: Zioło Zbigniew , Piróg Sławomir
Published: February 2021

Współczesnym tendencjom rozwoju społeczno-gospodarczego towarzyszy nasilający się proces koncentracji kapitału w coraz większych i sprawniej działających korporacjach ponadnarodowych. W strukturze wiodących korporacji ponadnarodowych w miarę wzrostu kapitału nasila się integracja coraz bardziej zróżnicowanych elementów o funkcjach: zarządzających, produkcyjnych, badawczo-rozwojowych, usługowych, handlowych, finansowo-kapitałowych i logistycznych. Podstawowe znaczenia w procesie kształtowania tego typu firm mają ich zarządy, spełniające funkcje centrów decyzyjnych, które zarządzają tą złożoną, wieiosektorową strukturą dynamiczną i wyznaczają poszczególnym elementom określoną pozycję na światowym rynku . W zależności od koniunktury gospodarczej centra decyzyjne uaktywniają zasoby kapitałowe, wpływając na zwiększenia rozmiarów dotychczasowej działalności, czy kreowanie nowych lokalizacji, celem wkraczania lub utrwalania swojej pozycji konkurencyjnej na związanych z nimi obszarach rynkowych. Podstawowym celem tej działalności jest dbałość o systematyczne podnoszenia konkurencyjności oferowanych produktów oraz osiąganie najkorzystniejszych wyników finansowych obecnie czy w najbliższym czasie.
Funkcjonowanie zakładów przemysłu obuwniczego regionu słupskiego w zmieniających się warunkach gospodarowania
Authors: Rydz Eugeniusz , Szymańska Wioletta
Published: February 2021

Pozycję podmiotów gospodarczych w określonych strukturach społecznych i ekonomicznych wyznaczają w zasadniczy sposób założenia społeczno-ustrojowe państwa, w ramach którego funkcjonuje dany podmiot. W Polsce nakazowo-rozdzielczy system gospodarowania do końca lat osiemdziesiątych powodował centralne planowanie, kierowanie i zarządzanie. Odpowiednie resorty koordynowały rozwój poszczególnych dziedzin życia społeczno- gospodarczego. Przedsiębiorstwa przemysłowe posiadały niemal całkowicie określone reguły funkcjonowania. Zachowań przestrzennych nie regulowały, w tym przypadku, ani ekonomiczne analizy kosztów i korzyści, ani percepcja przestrzeni społeczno-ekonomicznej kraju (Parysek 1994). Jednocześnie brak mechanizmów rynkowych i otwarcia na gospodarkę światową spowodował zanik konkurencyjnych zachowań przedsiębiorstw oraz niedocenianie innowacji , nakładów na badanie i rozwój, a w konsekwencji lukę technologiczną oraz niską jakość, słabą dynamikę i małą efektywność produkcji przemysłowej (Stryjakiewicz 1999).
Korporacje międzynarodowe w przestrzeni globalnej
Authors: Gierańczyk Wiesława , Stańczyk Arkadiusz
Published: February 2021

Na wstępie warto zastanowić się, czym jest globalizacja w aspekcie przedsiębiorstwa?Najogólniej można powiedzieć, że globalizacja firm oznacza zaawansowane umiędzynarodowienieich działalności, które polega na funkcjonalnej integracji rozproszonych poświecie jednostek organizacyjnych. Założenie to najpełniej realizowane jest przez największeprzedsiębiorstwa, które sukcesywnie i konsekwentnie rozszerzają zasięg swegodziałania m.in. poprzez łączenie się przedsiębiorstw w coraz większe organizmy gospodarcze,które dysponując coraz większą siłą mogą dyktować warunki innym uczestnikomrynku. Integracja ekonomiczna przedsiębiorstw może mieć różny przebieg, skalę i zasięg.O integracji poziomej mówi się, gdy w skład organizacji integracyjnej wchodzą przedsiębiorstwawytwarzające takie same lub podobne produkty, natomiast o pionowej, gdy łącząsię przedsiębiorstwa różnych gałęzi i branż, uczestniczące w kolejnych fazach procesuprodukcji dobra finalnego...
Proces kształtowania się Motoroli jako firmy ponadnarodowej
Authors: Wajda Eliza
Published: February 2021

Postępujący proces globalizacji w podstawowym stopniu wpływa na intensyfikacjęrozwoju cywilizacyjnego i zmian dokonujących się w świecie, na poszczególnych kontynentach,w państwach i regionach. Głównymi podmiotami, które bezpośrednio intensyfikująten proces są korporacje transnarodowe. Jak przyjmuje A. Zorska (2000), posiadająone duży potencjał oraz mają zdolności integrowania i koordynowania wielkich systemówprodukcyjnych, usługowych i finansowych.
Globalne uwarunkowania restrukturyzacji przedsiębiorstw Polski Południowo-Wschodniej
Authors: Rachwał Tomasz
Published: February 2021

Powodzenie procesu restrukturyzacji przedsiębiorstw przemysłowych w Polsce uwarunkowanejest szeregiem czynników zewnętrznych, do których zaliczyć należy nasilającysięw ostatniej dekadzie proces globalizacji gospodarki światowej. Powszechnie stosowanepojęcie „globalizacja” jest bardzo niejednoznaczne. W literaturze poświęconej tej problematycemożna znaleźć wiele jego definicji, które akcentują różne jej cechy, brak jest jednakjednej, szeroko akceptowanej (Czaja 2001, Liberska 2002, Stryjakiewicz 1999, Zorska1998).
Ross 308 Etlik Piliçlerde Damızlık Yaşının Kuluçka Sonuçları ve Civciv Kalitesi Üzerine Etkisi
Authors: Durmuş Murat , Kurşun Kadriye , Baylan Mikail , Kutlu Hasan Rüştü
Published: February 2021

Mevcut çalışma, Ross 308 etlik piliç ebeveynlerinde anaç yaşının kuluçka sonuçları ve civciv kalitesi üzerine etkilerinin belirlenmesi amacıyla planlanmıştır. Bu amaçla, çalışmada 30, 47 ve 59 haftalık olmak üzere üç farklı yaş grubundaki damızlık anaçların yumurtaları kullanılmıştır. Her yaş grubundan 150‘şer adet (50 × 3) olmak üzere toplam da 450 adet kuluçkalık yumurta tesadüfi olarak kuluçka makinasına yerleştirilmiştir. Kuluçka çıkışı sonrasında çıkan civciv sayısı belirlenmiş ve bu civcivler kalite sınıflandırılmasına tabi tutularak düşük kaliteli, yüksek kaliteli ve ıskarta civciv olmak üzere üç gruba ayrılmıştır. Kuluçka sonrası civciv çıkmayan yumurtalar, döllülük kontrolü ve embriyonik ölümlerin belirlenmesi için kırılmıştır. Çalışma sonunda, damızlık anaç yaşının döllülük oranı (%), kuluçka randımanı (%) ve civciv kalitesi üzerine etkisi önemli bulunurken çıkış gücü, erken, orta ve geç dönem embriyo ölümleri üzerine etkisi önemsiz bulunmuştur. Genç damızlıklardan elde edilen yumurtaların yaşlı damızlıklardan elde edilen yumurtalara göre döllülük oranı ve kuluçka randımanı bakımından daha yüksek olduğu tespit edilmiştir. Genç damızlıklardan elde edilen civcivlerin %33,60‘ı yüksek kaliteli, %48,10‘u düşük kaliteli ve %18,30‘u ıskarta civciv olarak belirlenmiştir. Bu oranlar orta yaşlı damızlıklardan elde edilen civcivlerde sırasıyla %32,70, %43,40 ve %23,90 iken yaşlı damızlık hayvanlardan elde edilen civcivlerde sırasıyla %56,10, %36,40 ve %7,50 olarak bulunmuştur. Sonuç olarak, damızlık yaşının artmasına paralel olarak kuluçka sonuçlarında düşüş olmakla birlikte civciv kalitesinin arttığı tespit edilmiştir.
Hayvan Yemi Olarak Kullanılan Şekerpancarı Yapraklarının Nitrat İçeriğine Azot-Bor Uygulamasının ve Zamanın Etkisi
Authors: Bilir Bedriye , Saltalı Kadir
Published: February 2021

Şekerpancarı üretiminde verim ve kalite için azot (N) ve bor (B) gübrelemesi önemlidir. Fakat fazla azotlu (N) gübreler kalite parametreleri üzerinde olumsuz etkilere neden olmaktadır. Hayvan yemi olarak kullanılan şeker pancarı yapraklarında nitrat birikiminin artması da olumsuz etkilenen kalite parametrelerinden birisidir. Bu çalışmanın amacı, şeker pancarına farklı dozda azot ve bor uygulamasının bitki yapraklarında nitrat birikimi üzerine etkisini incelemektir. Çalışma, Kahramanmaraş ili Elbistan İlçesinde 2017 yılında B içeriği 0,56 mg kg-1 olan bir arazide yürütülmüştür. Deneme tesadüf blokları faktöriyel deneme desenine göre 3 tekerrürlü olarak kurulmuştur. Denemede 5 farklı N dozu (0, 9,18, 27, 36 kg N da-1) ve 4 farklı B dozu (0, 200, 400, 600 g B da-1) uygulanmıştır. Araştırmada temmuz, ağustos, eylül ve ekim aylarında yaprak örnekleri alınmıştır. Araştırma sonuçlarına göre N dozu arttıkça yaprakların nitrat içeriği istatistiksel olarak önemli derecede artmıştır. Bor uygulamasının yaprakların nitrat içeriği üzerine etkisi önemli bulunmamıştır. Hasat dönemine doğru yaprakların nitrat içeriği istatistiksel olarak önemli düzeyde azalmıştır. Sonuç olarak hasat sonrası şekerpancarı yapraklarının hayvan yemi olarak kullanması, nitrat bakımından hayvanlar için bir risk oluşturmamaktadır.
Farklı Dozlarda Fosfor Uygulamasının Şeker pancarı (Beta Vulgaris L.) Bitkisinin Verimine ve Besin Elementleri Alımına Etkisi
Authors: Demirbaş Ahmet
Published: February 2021

Tarla koşullarında yürütülen bu araştırmada, farklı dozlarda fosfor uygulamasının şeker pancarı bitkisinin verimine ve besin elementleri alımına etkilerinin belirlenmesi amaçlanmıştır. Araştırma Sivas ilinde 3 tekerrürlü olarak tesadüf parselleri deneme desenine göre yürütülmüş ve şeker pancarı çeşiti olarak Valentina kullanılmıştır. Araştırmada fosfor dozları; 0 kg P/da, 15 kg P/da ve 30 kg P/da olarak triple süper fosfat (TSP) formunda uygulanmıştır. Şeker pancarı bitkisinin ekiminden yaklaşık 80 gün sonra yaprak örnekleri alınarak azot (N), fosfor (P), potasyum (K), kalsiyum (Ca), magnezyum (Mg), demir (Fe), çinko (Zn), mangan (Mn) ve bakır (Cu) konsantrasyonları ile hasatta verim belirlenmiştir. Araştırma sonuçları, artan fosfor dozlarına bağlı olarak verimin arttığını ve en yüksek verimin 8151,0 kg/da ile 30 kg P/da dozunda olduğunu göstermiştir. Ayrıca, en yüksek azot, fosfor ve potasyum konsantrasyonlarının da 30 kg P/da dozunda olduğu belirlenmiştir (sırasıyla %4,77 N, %0,74 P ve %2,39 K). Ancak, araştırmada kalsiyum ve magnezyum konsantrasyonlarının artan fosfor dozlarına bağlı olarak azaldığı tespit edilmiştir. Mikro elementlerden sadece demir konsantrasyonu fosfor uygulamalarıyla artmışken, çinko, mangan ve bakır konsantrasyonları artan fosfor dozlarına bağlı olarak azalmıştır.
ANALISA KELAYAKAN BISNIS TERHADAP UMKM GILA CEMILAN DALAM MASA PANDEMI COVID 19
Authors: Hasanah Emliah , Pertiwi Deviana , Satrio Happy , Prasetya Hendra Dwi
Published: February 2021

During the Covid 19 pandemic, the condition of the Indonesian nation is currently experiencing a period of crisis, especially in the economic sector, which will cause several social problems, such as termination of employment, the number of unemployed is increasing rapidly and employment opportunities are increasingly narrow. The purpose of this journal is to be responsive to costs incurred during production, to calculate net profit and gross profit, as well as whether or not Keripik Uzuz New Normal and Susu Micuare marketed in Sidoarjo and its surrounding areas. The results showed that the average total cost per month was 3,483,000 resulting from a fixed cost of 263,000, 2,134,500 raw material costs for making intestines and 967,500 micu-making raw materials costs, and 118,000 promotion costs. The “Gila Cemilan 3M” business generates a net profit of approximately 917,000 from revenues of 4,400,000 minus an average total cost of 3,483,000. From the calculation of the total cost, it can be known or not the income, expenses and income earned.
Teletrabajo: modalidad en expansión
Authors: Montalvo Romero Josefa
Published: February 2021

RESUMEN: El presente artículo tiene como objeto de estudio la viabilidad del teletrabajo como una alternativa ante las situaciones globales de salud que vivimos. Caracterizado por la deslocalización del trabajo y el uso de tecnologías de la información y comunicación, la adaptación de este modelo de trabajo supone la posibilidad de alcanzar ventajas para todas las partes integrantes de la relación de trabajo y para la sociedad en general, desde la productividad y la flexibilidad laboral a la motivación y la satisfacción. Sin embargo, presenta retos importantes en materia de seguridad laboral y salud ocupacional que deben resolverse. En términos generales, el cómo se ha encarado la temática regulatoria y normativa no ha ido más allá de la extensión de disposiciones legislativas existentes de trabajo a domicilio hacia el teletrabajo, dejando vacíos temáticos en cuanto a relaciones sindicales, a riesgos domésticos y laborales en el hogar y a costos vinculados a la tecnología.Palabras clave: Teletrabajo, Tecnologías, Flexibilidad, Seguridad. ABSTRACT: The purpose of this article is the feasibility of telework as an alternative to the global situations we live in. Characterized by the relocation of work and the use of information and communication technologies, the adaptation of this working model implies the possibility of achieving advantages for all the integral parts of the working relationship and for society at large, from productivity and work flexibility to motivation and satisfaction. However, it presents significant occupational safety and occupational health challenges that need to be addressed. Overall, how the regulatory and regulatory issues have been addressed has not gone beyond the extension of existing home-working legislative provisions towards telework, leaving thematic gaps in trade union relations, domestic and labour risks at home and technology-related costs.Keywords: Telework, Technologies, Flexibility, Security.
La prisión preventiva y sus límites
Authors: Sandoval Pérez Esperanza
Published: February 2021

RESUMEN: Con la implementación del sistema de justicia penal en México, la presunción de inocencia deja de ser un principio para convertirse en un derecho fundamental del imputado frente al ejercicio del poder punitivo del Estado, garantizado en la Constitución Federal, en el ordenamiento adjetivo y leyes especiales penales; constituyendo uno de los límites de la prisión preventiva que en este trabajo se aborda en dos vertientes: la primera para explicar si la imposición de esta medida cautelar viola ese derecho y la segunda, para conocer los fines y el trato de los presos provisionales a la luz de la Ley Nacional de Ejecución Penal.Palabras clave: prisión preventiva, presunción de inocencia, procedimiento abreviado, preso provisional.ABSTRACT: With the implementation of the criminal justice system in Mexico, the presumption of innocence ceases to be a principle to become a fundamental right of the accused against the exercise of the punitive power of the State, guaranteed in the Federal Constitution, in the adjective order and special criminal laws; constituting one of the limits of pre-trial detention that is addressed in two aspects in this work: the first to explain whether the imposition of this precautionary measure violates that right and the second, to know the purposes and treatment of provisional prisoners in the light of the National Law on Criminal Execution.Keywords: pre-trial detention, presumption of innocence, abbreviated procedure, provisional prisoner.
Os desdobramentos políticos do (neo)pentecostalismo no assentamento Olga Benário em Ipameri (GO)
Authors: Monteiro Rafael de Melo
Published: February 2021

O objetivo deste artigo é compreender os desdobramentos políticos do (neo)pentecostalismo no Assentamento Olga Benário, localizado no município de Ipameri (GO), com ênfase na compreensão, pelos assentados, acerca do Movimento dos Trabalhadores Rurais Sem Terra (MST), da luta pela terra e da vida no assentamento. Os depoimentos apresentados foram extraídos da transcrição de 40, das 55 entrevistas realizadas, no ano de 2015, no Assentamento Olga Benário, juntamente com alguns registros fotográficos desta época (2015) e de anos anteriores (2012/13). De modo geral, acreditamos que o (neo)pentecostalismo contribui com a dissociação entre os fiéis e seus problemas políticos, fazendo-os transferirem ao plano espiritual a solução das dificuldades da vida, ficando, sem generalizações, alheios à mobilização e reivindicação objetivas, realizadas no tempo e espaço presentes. Por isso, mesmo tendo participado do MST, muitos relativizam e/ou negam a importância política deste movimento social e se colocam diante de uma solução individual dos problemas ou em conjunto, mas restrita à comunidade de fiéis que compõem uma igreja. Isto mostra também, possivelmente, uma desresponsabilização dos indivíduos sobre o destino das suas vidas, contando com a onipresença, onipotência e onisciência de Deus para a salvação eterna e a ascensão ao paraíso.
«Es signo de islas»: Agustín Espinosa y el romancero canario /
Authors:   Universidad de Sevilla (España), Reyes de las Casas Sabina
Published: February 2021

Agustín Espinosa is one of the most important authors of the Canary Islands. A multifaceted writer, his work as a compiler of island “romances” is little known. In this work we will see what was the status of the Canarian “romances” research at the beginning of the 20th century and we will value the pioneering contribution of the author of Crimen to this field. To do this, we will review what other researchers such as Maximiano Trapero or Diego Catalán have written on the subject and propose a new reading of Espinosa’s research that starts from its context, that is, a reading that derives from a time when literature of the Canary Islands was conc
Agustín Espinosa, espectador del espacio insular: la influencia del cine en Lancelot, 28°-7° (1929)
Authors:   Universidad de La Laguna (España), García-Aguilar Alberto
Published: February 2021

The avant-garde description of the island of Lanzarote that Agustín Espinosa developed in Lancelot, 28°-7° (1929) proves that the writer shared the same interest in cinema that other young writers had expressed in their works during the 20s. However, the interartistic relation between cinema and literature in Lancelot has not been examined carefully yet. For this reason, this paper tries to study the different ways the cinema has influenced Lancelot, which includes not only references to film stars from the Amercian silent cinema, but also using certain film techniques. Thus, Espinosa offers new images of the island, now merged with universal artistic movements. To analyze this particular use of Espinosa’s cinema background in Lancelot, this paper will study the interest in cinema that the writer showed along his life, the way he uses different film techniques, the poetic imagery related to cinema, and the references to film stars included in the text.
Agustín Espinosa y el «crimen» de la escritura: notas para el estudio de su figura autorial
Authors:   Universidad de La Laguna (España), Acosta Mota Alejandra
Published: February 2021

This article studies the authorial figure of Agustín Espinosa from a double perspective. The first focuses on the writer’s ethos in texts dated between the end of the 1920s and the publication of Crimen (1934). The second attends to the different images of the author that emerge as a consequence of the scandal surrounding this book. Both parts of this approach deal with the fissures and continuities between Espinosa’s image and the representations of authorship in his time, with the purpose of highlighting the relevance of the Canary writer for the study of Surrealism in Spain and the sociocultural factor leading to his scarce recognition as one of its most representative voices
Bajo el signo vanguardista: las otras voces de un sueño en libertad /
Authors:   CEAD de Santa Cruz de Tenerife Mercedes Pinto (España), Martín Fumero José Manuel
Published: February 2021

The contribution of Agustín Espinosa as a leading promoter and creator of avant-garde literature in our islands is unquestionable. His role as a crucial representative of this period of our literary culture found wide resonance in other writers who, thanks to their literary work, give solidity to a unique moment of creative freedom in the environment of our islands. This article seeks to illustrate this relevance by giving due prominence to other lesser-known authors who belong to this remarkable period.
Evolution of afro-descendant representation in print advertising between 2001 and 2015 and Estatuto da Igualdade Racial de 2010: A Systematic Review
Authors: Santos Roberto Mauro
Published: February 2021

Beyond its business importance, advertising plays an important sociocultural role by serving as a vehicle for disseminating values, attitudes, stereotypes and ideologies such as racism, but there is still a lack of studies integrating publicity and racism. This exploratory study investigates the evolution of Afro-descendant representativeness in print advertising through a Systematic Review of Literature (SRL) between 2001 and 2015. In the results, a modest volume of annual research output was found, 3.7 per year, with 85 % of empirical articles using qualitative methods (92.7%) in addition to the quantitative ones (7.3%) reveals: 1) 85% of them insists in a continuous numerical underrepresentation (average presence of 7% in advertisements), although they represent 53.1% of the population; 2) unanimity regarding the continuous use of flagrant and subtle stereotypes that lead to a disguised and naturalized advertising segregation even after the Estatuto da Igualdade Racial. The main problems and challenges are discussed and recommendations designed to guide future studies.
O narrador morto/vivo: figurações da morte em Memórias póstumas de Brás Cubas de Machado de Assis
Authors: Schumm Petra
Published: February 2021

Partindo da obeservacao enigmática do narrador ou autor ao princípio das Memórias póstumas de Br´as Cubas de Machado de Assis que "nao é propiamente um autor defunto, mas um defunto autor" vou examinar nesta contribuicao os seguintes aspectos: 1. Num primeiro passo, trata-se de perguntar como se tematizam, em Brás Cubas, a morte, os rituais de enterro e do luto, relacionando-os com as observacoes da crítica social sobre a cultura da morte no século XIX. 2. Num segundo passo, pretende-se analizar as consequencias que tem esta conceituacao da morte - assim como a condicao paradoxal de um narrador ou autor morto-vivo - para a organizacao narrativa do relato das Memórias. 3. E, finalmente, em um sentido mais amplo: que funcao cumpre a narrativa de memórias de Machado de Assis no contexto social do Brasil no século XIX? Seguindo essas perguntas discutirei também as relacoes que tem a escrita de memórias de Machado de Assis com a género do fantástico e os debates atualmente geralizados sobre 'specters', 'cultural haunting' e a nocao de 'autoria'.
Fama & French Üç ve Beş Faktörlü Varlık Fiyatlama Modellerinin Geçerliliği: Borsa İstanbul Örneği
Authors: COŞKUN Kemal , TORUN Talip
Published: February 2021

Bu çalışmanın amacı, Fama & French (1992, 1993 ve 1996) tarafından Sermaye Varlıklarını Fiyatlama Modeli’ne (SVFM) alternatif olarak geliştirilen Üç Faktörlü modelin (FF3F Modeli) ve daha sonra yine Fama & French (2015) tarafından geliştirilen ve mevcut çalışmalarını bir adım daha öteye taşıdıkları Beş Faktörlü modelin (FF5F Modeli) Borsa İstanbul’da test edilmesidir. Bu doğrultuda, aylık veriler kullanılarak Temmuz 2009 – Haziran 2018 döneminde BIST 100 Endeksi’nde kesintisiz işlem gören hisse senetlerinin 108 aylık kapanış fiyatları kullanılarak FF3F ve FF5F modelleri test edilmiştir. FF3F Modeli için kurulan 6, FF5F Modeli için kurulan 14 regresyon modeli çoklu zaman serisi regresyon analizi ile test edilmiştir. Elde edilen sonuçlar, FF3F ve FF5F modelinin BİST 100 Endeksi üzerinde uygulanabilir olduğunu göstermiştir. Ayrıca F istatistik ve Düzeltilmiş R2 değerleri incelendiğinde hisse senedi getirilerini açıklamada FF3F modelinin FF5F modeline kıyasla daha iyi performans gösterdiği sonucuna ulaşılmıştır.
Scaling and efficient classical simulation of the quantum Fourier transform
Authors: Woolfe Kieran J. , Hill Charles D. , Hollenberg Lloyd C. L.
Published: February 2021

We provide numerical evidence that the quantum Fourier transform can be efficiently represented in a matrix product operator with a size growing relatively slowly with the number of qubits. Additionally, we numerically show that the tensors in the operator converge to a common tensor as the number of qubits in the transform increases. Together these results imply that the application of the quantum Fourier transform to a matrix product state with n qubits of maximum Schmidt rank χ can be simulated in O(n (log(n))2 χ 2 ) time. We perform such simulations and quantify the error involved in representing the transform as a matrix product operator and simulating the quantum Fourier transform of periodic states.
Quantum algorithms for Gibbs sampling and hitting-time estimation
Authors: Chowdhury and Anirban Narayan , Somma Rolando D.
Published: February 2021

We present quantum algorithms for solving two problems regarding stochastic processes. The first algorithm prepares the thermal Gibbs state of a quantum system and runs in time almost linear in p Nβ/Z and polynomial in log(1/epsilon), where N is the Hilbert space dimension, β is the inverse temperature, Z is the partition function, and epsilon is the desired precision of the output state. Our quantum algorithm exponentially improves the complexity dependence on 1/epsilon and polynomially improves the dependence on β of known quantum algorithms for this problem. The second algorithm estimates the hitting time of a Markov chain. For a sparse stochastic matrix P, it runs in time almost linear in 1/(epsilon ∆3/2 ), where epsilon is the absolute precision in the estimation and ∆ is a parameter determined by P, and whose inverse is an upper bound of the hitting time. Our quantum algorithm quadratically improves the complexity dependence on 1/epsilon and 1/∆ of the analog classical algorithm for hitting-time estimation. Both algorithms use tools recently developed in the context of Hamiltonian simulation, spectral gap amplification, and solving linear systems of equations.
Open quantum random walks and the mean hitting time formula
Authors: Lardizabal Carlos F.
Published: February 2021

We make use of the Open Quantum Random Walk setting due to S. Attal, F. Petruccione, C. Sabot and I. Sinayskiy in order to discuss hitting times and a quantum version of the Mean Hitting Time Formula from classical probability theory. We study an open quantum notion of hitting probability on a finite collection of sites and with this we are able to describe the problem in terms of linear maps and its matrix representations. After setting an open quantum version of the fundamental matrix for ergodic Markov chains we are able to prove our main result and as consequence a version of the Random Target Lemma. We also study a mean hitting time formula in terms of the minimal polynomial associated to the matrix representation of the quantum walk. We discuss applications of the results to open quantum dynamics on graphs together with open questions.
On quantum additive Gaussian noise channels
Authors: Idel Martin , Konig Robert
Published: February 2021

We give necessary and sufficient conditions for a Gaussian quantum channel to have a dilation involving a passive, i.e., number-preserving unitary. We then establish a normal form of such channels: any passively dilatable channel is the result of applying passive unitaries to the input and output of a Gaussian additive channel. The latter combine the state of the system with that of the environment by means of a multi-mode beamsplitter.
Perfect state transfer on graphs with a potential
Authors: Kempton Mark , Lippner Gabor , Yau Shing-Tung
Published: February 2021

In this paper we study quantum state transfer (also called quantum tunneling) on graphs when there is a potential function on the vertex set. We present two main results. First, we show that for paths of length greater than three, there is no potential on the vertices of the path for which perfect state transfer between the endpoints can occur. In particular, this answers a question raised by Godsil in Section 20 of [1]. Second, we show that if a graph has two vertices that share a common neighborhood, then there is a potential on the vertex set for which perfect state transfer will occur between those two vertices. This gives numerous examples where perfect state transfer does not occur without the potential, but adding a potential makes perfect state transfer possible. In addition, we investigate perfect state transfer on graph products, which gives further examples where perfect state transfer can occur.
CV-MDI quantum key distribution via satellite
Authors: Hosseinidehaj Nedasadat , Malaney Robert
Published: February 2021

In this work we analyze a measurement-device-independent (MDI) protocol to establish continuous-variable (CV) quantum key distribution (QKD) between two ground stations. We assume communication occurs between the ground stations via satellite over two independent atmospheric-fading channels influenced by turbulence-induced beam wandering. In this MDI protocol the measurement device is the satellite itself, and the security of the protocol is analyzed through an equivalent entanglement-based swapping scheme. We quantify the positive impact the fading channels can have on the final quantum key rates, demonstrating how the protocol is able to generate a positive key rate even over high-loss atmospheric channels provided that the maximum transmission coefficient of the channel is sufficiently large. This is somewhat counter-intuitive given that the same outcome is only possible in the low-loss regime for a measurement device centrally positioned in a fiber-optic channel. Our results show that useful space-based quantum key generation rates between two ground stations are possible even when the relay satellite is held by an adversary. The cost in key rate incurred by altering the status of the satellite from trustworthy to untrustworthy is presented.
On the one-shot zero-error classical capacity of classical-quantum channels assisted by quantum non-signalling correlations
Authors: Lai Ching-Yi , Duan Runyao
Published: February 2021

Duan and Winter studied the one-shot zero-error classical capacity of a quantum channel assisted by quantum non-signalling correlations, and formulated this problem as a semidefinite program depending only on the Kraus operator space of the channel. For the class of classical-quantum channels, they showed that the asymptotic zero-error classical capacity assisted by quantum non-signalling correlations, minimized over all classicalquantum channels with a confusability graph G, is exactly log ϑ(G), where ϑ(G) is the celebrated Lov´asz theta function. In this paper, we show that the one-shot capacity for a classical-quantum channel, induced from a circulant graph G defined by equal-sized cyclotomic cosets, is logbϑ(G)c, which further implies that its asymptotic capacity is log ϑ(G). This type of graphs include the cycle graphs of odd length, the Paley graphs of prime vertices, and the cubit residue graphs of prime vertices. Examples of other graphs are also discussed. This gives Lov´asz ϑ function another operational meaning in zero-error classical-quantum communication.
Quantum gates via continuous time quantum walks in multiqubit systems with non-local auxiliary states
Authors: Solenov Dmitry
Published: February 2021

Non-local higher-energy auxiliary states have been successfully used to entangle pairs of qubits in different quantum computing systems. Typically a longer-span non-local state or sequential application of few-qubit entangling gates are needed to produce a non-trivial multiqubit gate. In many cases a single non-local state that span over the entire system is difficult to use due to spectral crowding or impossible to have. At the same time, many multiqubit systems can naturally develop a network of multiple nonlocal higher-energy states that span over few qubits each. We show that continuous time quantum walks can be used to address this problem by involving multiple such states to perform local and entangling operations concurrently on many qubits. This introduces an alternative approach to multiqubit gate compression based on available physical resources. We formulate general requirements for such walks and discuss configurations of non-local auxiliary states that can emerge in quantum computing architectures based on self-assembled quantum dots, defects in diamond, and superconducting qubits, as examples. Specifically, we discuss a scalable multiqubit quantum register constructed as a single chain with nearest-neighbor interactions. We illustrate how quantum walks can be configured to perform single-, two- and three-qubit gates, including Hadamard, Control-NOT, and Toffoli gates. Continuous time quantum walks on graphs involved in these gates are investigated.
Perfect state transfer is poly-time
Authors: Coutinho Gabriel , Godsil Chris
Published: February 2021

We show that deciding whether a graph admits perfect state transfer can be done in polynomial time on a classical computer with respect to the size of the graph.
Quantum conditional query complexity
Authors: Sardharwalla Imdad S.B. , Strelchuk Sergii , Jozsa Richard
Published: February 2021

We define and study a new type of quantum oracle, the quantum conditional oracle, which provides oracle access to the conditional probabilities associated with an underlying distribution. Amongst other properties, we (a) obtain highly efficient quantum algorithms for identity testing, equivalence testing and uniformity testing of probability distributions; (b) study the power of these oracles for testing properties of boolean functions, and obtain an algorithm for checking whether an n-input m-output boolean function is balanced or e-far from balanced; and (c) give an algorithm, requiring O˜(n/e) queries, for testing whether an n-dimensional quantum state is maximally mixed or not.
Theoretical Study on Proton Diffusivity in Y-Doped BaZrO3 with Realistic Dopant Configurations
Authors: Fujii Takeo , Toyoura Kazuaki , Uda Tetsuya , Kasamatsu Shusuke
Published: February 2021

We theoretically revisit the proton diffusivity in yttrium-doped barium zirconate (Y-doped BaZrO3) with realistic dopant configurations under processing conditions. In a recent study employing the replica exchange Monte Carlo method, the equilibrium Y configurations at typical sintering temperatures were shown to deviate from the random configuration assumed in earlier theoretical studies. In the present study, we took this observation into account and evaluated the effect of the Y configuration on the proton diffusivity. Using the master equation approach based on local diffusion barriers calculated from first principles, the proton diffusivities under realistic Y configurations were estimated to be higher than those in the random configuration. This is explained by the fact that realistic Y configurations have fewer trap sites with deep potential wells compared to the random configuration due to the isolation trend of Y dopants. In addition, the effects of proton-proton interaction and the abundance of preferential conduction pathways are discussed; it is found that both are relatively minor factors compared to the trap site effect in determining the dependence of the proton diffusivity on the Y configurations.
DockOnSurf: A Python code for the High-Throughput Screening of Flexible Molecules Adsorbed on Surfaces
Authors: Marti Carles , Blanck Sarah , Staub Ruben , Loehlé Sophie , Michel Carine , Steinmann Stephan
Published: February 2021

We present the open-source python package DockOnSurf which automates the generation and optimization of low-energy adsorption configurations of molecules on extended surfaces and nanoparticles. DockOnSurf is especially geared towards handling polyfunctional flexible adsorbates. The use of this high-throughput workflow allows to carry out the screening of adsorbate-surface configurations in a systematic, customizable and traceable way, while keeping the focus on the chemically relevant structures.The screening strategy consists on splitting the exploration of the adsorbate-surface configurational space into chemically meaningful domains, i.e., by choosing among different conformers to adsorb, surface adsorption sites, adsorbate anchoring points, orientations and allowing dissociation of (acidic) protons. We demonstrate the performance of the main features based on varying examples, ranging from CO adsorption on a gold nanoparticle to sorbitol adsorption on hematite. Through the use of the presented program, we aim to foster efficiency, traceability and ease of use in research within tribology, catalysis, nanoscience and surface science in general.
Temperature Dependent Anomalous Mn2+ Emission and Excited State Dynamics in Mn2+-Doped MAPbCl3-xBrx Nanocrystals
Authors: Kore Bhushan , Das Shyamashis , Sarma D. D.
Published: February 2021

In hybrid perovskites, MAPbI3 and MAPbBr3 have been extensively studied for their optical and photovoltaic properties, but MAPbCl3 is significantly less investigated for its optical and photovoltaic properties due to its low photoluminescence quantum yield (PL QY) and a large

band gap. However, the large band gap makes it a suitable host for doping transition metal ions to explore new optical properties. We synthesized nanocrystals (NCs) of MAPbCl3 doped with Mn2+ by simple ligand assisted reprecipitation method. The reaction temperature and Pb to Mn feed ratio were optimized by preparing a series of Mn2+-doped MAPbCl3 NCs. The prepared NCs show bright Mn2+ emission with ~13% PL QY suggesting an efficient energy transfer from host NCs to Mn2+. Since the large bandgap of MAPbCl3 precludes the possibility of investigating temperature dependent PL and lifetime measurements to understand the excited state dynamics, we carried out these experiments on Mn2+ doped MAPbCl2.7Br0.3 with the Br concentration adjusted to bring the bandgap of the alloyed system within the limits of the experimental technique. Our studies establish an anomalous behavior of Mn2+ PL emission in this host. These results reveal the origin of a temperature mediated energy transfer from exciton to Mn2+ and provides an understanding of the underlying mechanisms of PL properties of this new class of NCs.
Perception of Students on Online Self-Assessment Tool in Anatomy During COVID-19 Crisis
Authors: Chakrabarti S. , Vidya B. M.
Published: February 2021

Background and Aim of Study: As anatomy subject is the basis of the MBBS curriculum, it’s clear understanding and knowledge is needed. Syllabus of anatomy is vast and also volatile, to summarise large amounts of facts and train students for acquisition of the skills, we believe that students learn by practice. Due to COVID-19 crisis on educational system online learning and assessment of students has become a preferable replacement of conventional in person teaching and learning. The aim of the study: to determine the perception of first year MBBS students on online self-assessment tool in anatomy, to evaluate their academic achievements during COVID-19 crisis. Material and Methods: The present study included 50 students of first year MBBS of Saveetha Medical College. Steps to conduct the aim for divided in two google forms, one contains challenging questions on the topic Lungs and Heart and other was a questionnaire to know the students’ perception on this online assessment tool. Results: It was observed that majority of the students have attempted the first google form and have also performed really well in it. 80% of the students were successful in giving the right answer for the questions given. In the second google form, which was a questionnaire, 85% of the students have found this online self-assessment to be really useful, interesting and easy way of learning. They found the questions to be challenging and help them to remember the topic in a long run. 91% of the students have liked the way of learning. Conclusions: Online self-assessment tool definitely proved to be a student friendly method of learning. This method gave them a way to learn and practice their subject topics as well as helped them in improving their perception and memory.
Translation into Arabic and validation of the Patient Assessment of Care for Chronic Conditions questionnaire for diabetes
Authors: Alharbi Nouf , Alsubk Nada , Alotabi Fatmah , Alotabi Mohammed , Alhrabi Norah , de Lusgnian Simon , Jonas Simon
Published: February 2021

Background: The Patient Assessment of Care for Chronic Conditions (PACIC-5As) is a questionnaire developed in English and designed to evaluate the health care experiences of people living with chronic conditions such as diabetes. Aims: This study aimed to translate, culturally adapt and validate the PACIC-5As instrument for the Arab context in a sample of Saudi Arabian people with diabetes. Methods: The PACIC-5As was translated into Arabic using a forward and backward translation process. The Arabic version was then validated with a sample of 557 Saudi Arabians with diabetes who were recruited from tertiary level diabetes centres in Riyadh between January and March 2018. In order to evaluate the psychometric properties of the Arabic version, Cronbach alphas and item correlations were determined and exploratory factor analysis was performed. Results: The translated PACIC-5As had good psychometric quality. Cronbach alpha was > 0.9 and the inter-item correlation ranged between 0.36 and 0.56. Exploratory factor analysis showed a single-factor structure. Conclusion: An Arabic version of the PACIC-5As questionnaire is now available to assess the experience of patients with diabetes. The results of this study can be used to improve the quality of the delivery of health care in Arabic-speaking countries
Structural Behavior of BubbleDeck Slab under Uniformly Distributed Load
Authors: Mahdi Ali Sabah , Mohammed Shatha Dehyaa
Published: February 2021

In structural construction fields, reducing the overall self-weight of the structure is considered a primary objective and substantial challenge in the civil engineering field, particularly in earthquake-affected buildings and tall buildings. Different techniques were implemented to attain this goal; one of them is setting voids in a specific position through the structure, just like a voided slab or BubbleDeck slab. The main objective of this research is to study the structural behavior of BubbleDeck reinforced concrete slabs under the effect of static uniformly distributed load. The experimental program involved testing five fixed-end supported two-way solid and BubbleDeck slabs of dimensions 2500×2500×200 mm. The considered parameters included the bubble's diameter 100 and 120 mm and the concrete volume reduction 15 and 18 %. The other parameters, which are concrete compressive strength and detail of the steel reinforcement, were identical for all the tested specimens to be  for the compressive strength and (∅ 10 @164 mm) for the steel reinforcement. The outcomes indicated that the ultimate load capacity for a BubbleDeck slab decreased by 15.93 and 11.5 % compared to the solid slab in case of concrete volume reductions 18 and 15 %, respectively. On the other hand, an advanced behavior, including the ultimate deflection, the absorbed energy, and the ductility factor, was achieved; the increments in these parameters were 39, 5.3, and 14.94 %, respectively. Doi: 10.28991/cej-2021-03091655 Full Text: PDF
Епістолярний ідіолект Лесі Українки в інтер'єрі родинної комунікації: уліта
Authors: Богдан Світлана
Published: February 2021

У статті на матеріалі епістолярних текстів розглянуто домінувальні розрізнювальні ознаки родинної комунікації Косачів; проаналізовано особливу стильову тональність їхнього листування, яка актуалізована насамперед у використанні своєрідної метамови, зокрема, лексичних одиниць, що мають статус регулятивності й становлять спільний для всіх членів родини «лексичний фонд», найчастотніші в якому – оказіональні найменування, найбільш послідовно експліковані в родинній епістолярії (з-поміж них фіксовано і власні, і загальні найменування). У межах ідіолектів Лесі Українки й Михайла Косача встановлено особливості мотивації, функціонування, типові контексти вживання, сполучувальні можливості, зміни семантичної структури й словотвірні ряди однієї з найбільш увиразнених і стилістично маркованих лексем родинної епістолярної комунікації – лексеми уліта.
До походження давніх топонімів Львівської області (матеріали до історико-етимологічного словника). 35–41
Authors: Яцій Василь
Published: February 2021

Стаття присвячена лінгвістичному аналізу сучасних назв населених пунктів Львівської області: Бíбрка, Бíтля, Бóриня, Велúке Колóдно, Верхня Лукавиця, Городисько та Демня. На матеріалі документально засвідчених історичних фіксацій найдавніших ойконімів досліджуваного регіону України простежено як особливості словотвірних моделей, так і фонетичні модифікації аналізованих онімів у часі.
Caracterización de la dureza en el agua subterránea de Puerto Príncipe. Una visión general sobre la importancia para la Salud del Magnesio en el Agua Potable
Authors:   Laboratoire Santé-Environnement, Université Quisqueya. Haiti Chapter of International Medical Geology Association. Laboratoire de Qualité de l’Eau et de l’Environnement. Haití, Emmanuel Evens , Simon Yanick ,   Laboratoire Santé-Environnement, Université Quisqueya. Haiti Chapter of International Medical Geology Association. Haití, Joseph Osnick ,   Laboratoire de Qualité de l’Eau et de l’Environnement, Université Quisqueya. Haití
Published: February 2021

La dureza del agua es básicamente la suma de las concentraciones de iones metálicos polivalentes disueltos de los cuales Ca2+ y Mg2+ son predominantes. En los últimos años esto se ha convertido en un problema de salud pública importante. De hecho, se ha registrado en la literatura una relación entre la mortalidad por causa de enfermedades cardiovasculares y la dureza del agua utilizada para el consumo humano. Aparentemente una dureza total superior a 200 mg/L, con una concentración de magnesio menor a 7 mg/L puede causar efectos adversos para la salud humana. En Haití, donde más del 60% de la geología del territorio está dominada por piedra caliza, los recursos hídricos son conocidos por ser muy duros. Los estudios de las fuentes de abastecimiento a la población de la zona metropolitana de Puerto Príncipe (MAPP), el área urbana más grande del país, mostraron una dureza total superior a 200 mg/L, con una concentración de magnesio menor a 7 mg/L, sin embargo, las enfermedades cardiovasculares son la séptima causa de muerte y representan el 3% de las muertes totales. En la perspectiva de evaluar el riesgo para la salud asociado a una baja concentración de magnesio en el agua utilizada para el consumo humano, parece conveniente proceder a la caracterización de los principales componentes de la dureza de las aguas subterráneas de la MAPP. El objetivo de este estudio fue: (i) revisar la química y toxicología de Ca2+ y Mg2+ con el fin de (ii) caracterizar la dureza, con un énfasis específico en la concentración de Mg en el agua subterránea de Puerto Príncipe. Se midieron en un pozo privado concentraciones de Mg2+ en el rango de 5,58 hasta 6,9 mg/L. Estos resultados deben ser confirmados por estudios con una muestra mayor, durante las estaciones lluviosa y seca.