bluuebunny/crossref_metadata_2025 huggingface dataset:
El acceso a la justicia contencioso administrativa como derecho fundamental efectivo
Authors: Bechara Llanos Abraham Zamir
Published: March 2019

Este artículo recoge el argumento central de la defensa de los derechos fundamentales como componente de nuestro Estado social de derecho, y del acceso a la justicia contenciosa administrativa como derecho fundamental efectivo y como garantía de amparo para todos los ciudadanos colombianos. Esta última se instituye como un valor superior de nuestros tiempos, en tanto que la relación y jerarquía de principios y normas constitucionales muestran la hoja de ruta para todas las instituciones y ramas que componen el derecho de nuestro ordenamiento jurídico. Su función es dinamizadora e integradora, al mirar más allá de lo que las herramientas dogmáticas presentan en cuestión de la aplicación de las leyes en los casos concretos; busca, además, mirar la misión de la justicia administrativa y la contenciosa, que se encargan de los litigios que nacen de los ciudadanos con el Estado y de las relaciones y negocios jurídicos que de ellos surjan, convirtiéndose así en parámetros de armonía a la hora de aplicar los criterios de interpretación normativa.
Docencia e investigación en la construcción del conocimiento científico: reflexiones para la ciencia jurídica
Authors: Bechara Llanos Abraham Zamir
Published: March 2019

Este artículo se fundamenta en la necesidad de enfocar la educación hacia la investigación teórico-práctica, aplicada al cambio de las realidades sociales. Parte de la llamada construcción teórica de la ciencia en el marco del siglo de las tecnologías, que persigue la conformación de espacios lógicos de interacción académica, apoyados en la epistemología de la ciencia, en la teoría sistémica del profesor Luhmann, en teóricos de la ciencia moderna (Michel Foucault), y en el enfoque comunicativo de Habermas. Además, utiliza importantes referentes teóricos, como los estudios del desarrollo humano aplicado a la noción de conocimiento y de ciencia social, de Sen, así como la posición de Carrillo de la Rosa en el replanteamiento del paradigma y objeto de estudio en las ciencias sociales.
El concepto de reparación colectiva en el marco de la justicia transicional
Authors: Ortega Hernandez Mary Cruz , Sayas Contreras Rafaela
Published: March 2019

El concepto de reparaciones colectivas, como categoría jurídica independiente de las reparaciones individuales, nace de la mano del Derecho Internacional de los Derechos Humanos, con el fin de favorecer a las víctimas de violaciones de Derechos Humanos en el marco de las políticas públicas de los Estados nacionales. Esta nueva categoría en construcción interpela los elementos tradicionales de la teoría jurídica, en la medida en que desborda los límites de la reparación individual, en el marco de procesos que atienden violaciones contra pueblos y comunidades. En ese sentido, este trabajo da cuenta del desarrollo del concepto y sus alcances, visibilizándose sus complejidades y limitaciones para ofrecer una propuesta conceptual que integre todos sus elementos.
Editorial
Authors: Quintero Lyons Josefina
Published: March 2019

Constituye un gran desafío el ejemplar que aquí se presenta, pues no solo se recogen los esfuerzos de aquellos que han posibilitado la misma, sino que esta ha arrojado todo un ejercicio técnico y editorial que permite tener en sus manos el presente número. La Revista Jurídica Mario Alario D´Filippo asume como particularidad el acompañamiento en torno a una cualificación permanente, orientada a fortalecer el vínculo tanto escritorlector, como autor-árbitro, de manera que materialicen los presupuestos necesarios para la construcción dinámica de los propósitos editoriales y científicos que soporten la revista; todo ello a través de la eficiencia, la eficacia y las garantías necesarias para iniciar el proceso de arbitraje, revisión y publicación.
El positivismo en serio ¿es posible hablar de principios en el positivismo jurídico?
Authors: Acosta Castro Juan Gabriel
Published: March 2019

En este artículo se intenta mostrar cómo puede justificarse la existencia de principios, a partir de la teoría positivista del Derecho, a pesar de que su incursión en la teoría contemporánea se muestre como novedosa. Se hará especial referencia al debate entre Hart y Dworkin, y las consecuencias que de éste se derivan.
Las restricciones verticales como elemento de protección al mercado interno en la unión europea y su aplicación en Colombia
Authors: Cruz Mahecha Diego Enrique , Ariza Orozco Oscar Manuel
Published: March 2019

Una aproximación al sistema jurídico y a la estructura social y comercial propia de la Unión Europea despierta en unos neófitos en tales materias una ingente curiosidad intelectual, proyectada no solo en ahondar en la naturaleza de sus instituciones, sino en la forma en que estas podrían aplicarse en el entorno colombiano. Se estudiarán, entonces, estas instituciones como medios de regulación de la actividad económica, las cuales, al adoptar acciones prohibitivas y/o sancionatorias, propugnan por la conservación y proyección del mercado interno y buscan oportunidades, en cuanto a las relaciones con el mercado internacional.
Tratamiento jurídico de las energías renovables en Colombia : ahorro energético, eficiencia energética y uso racional de la energía.
Authors: Pereira Blanco Milton José
Published: March 2019

En este trabajo se sostiene como tesis central, que el Estado Colombiano, sí bien ha desarrollado tímidamente el tema de los biocombustibles como energías renovables, la propuesta frente a otras fuentes no convencionales ha sido deficiente, porque no ha estructurado herramientas eficaces para entregar competitividad dentro del mercado energético a las energías renovables, siendo pasivo el Estado pasivo frente a la protección ambiental en cuanto a este punto se refiere. Lo anterior a partir del siguiente problema: ¿Cual ha sido el tratamiento jurídico de las energías renovables en Colombia y cual ha sido el nivel de incidencia de estas, en la protección ambiental? La tesis expuesta implica sostener que la eficiencia energética se convierte en el elemento principal de las energías renovables, dado que a partir de este tipo de energía se protege el medio ambiente. De igual forma, se debe señalar que el sistema jurídico energético colombiano no incluye en la canasta energética a las energías renovables como componente central, por cuanto la normatividad nacional solo se limita a fomentar las energías renovables sin implementar reformas estructurales al sistema en aras de hacer de las energías renovables el elemento central de la economía colombiana.
Derecho y economía : fórmula para la superación de la pobreza extrema y la construcción de paz en Colombia.
Authors: De León Vargas Georgina , Ballestas León Damary Margarita
Published: March 2019

Este artículo es un avance de un trabajo investigativo que busca analizar el plan nacional y los planes municipales de desarrollo de los municipios de El Carmen de Bolívar y San Juan Nepomuceno, para identificar las propuestas de desarrollo integral, como estrategia para la superación de la pobreza extrema y en consecuencia la construcción de paz. La pobreza no solo implica bajos niveles de ingreso; usualmente está acompañada por la vulneración del acceso de los derechos fundamentales. Reducir la pobreza requiere incentivar la generación de oportunidades para la consecución de un desarrollo económico y social. La planificación en todos los niveles es pieza fundamental, la concordancia, el trabajo articulado y transparente es en gran medida la garantía para el desarrollo integral.
EDITORIAL
Authors: De la Torre Alcocer José
Published: March 2019

Mensaje del editor de la revista Lux Médica.
EDITORIAL
Authors: De la Torre Alcocer Josè
Published: March 2019

Mensaje editorial
INDICE ANALÌTICO
Authors: Terrones Saldívar Ma del Carmen
Published: March 2019

Indice analìtico 2018
Effectiveness of individualized physical rehabilitation programs for upper extremity disorders in women with post-mastectomy syndrome
Authors: Odynets Tetiana , Briskin Yuriy , Pityn Maryan
Published: March 2019

Objective: The aim of this study was to determine the effectiveness of individualized physical rehabilitation programs targeted at improving functional state of upper extremity in women with post-mastectomy syndrome.

Method: Eighty five women with late symptoms of post-mastectomy syndrome were enrolled in the study. The participants were randomly enrolled for the first individualized program (Main Group, n=45) and for the second individualized program (Comparison Group, n=40). The first program included aqua aerobics (aqua jogging, aqua building, aqua stretching), conditional swimming, and recreational aerobics; the second program included conditional swimming and Pilates exercises.

Results: It was found that most of the investigated anthropometry and goniometry parameters in both groups steadily improved during the year of rehabilitation. After 6 months of rehabilitation the average values of active range of flexion and abduction were statistically higher in women Main Group  compared with Comparison Group by 10 degrees (p<0.001) and 6.43 degrees (p<0.01), respectively. The severity of lymphedema in the Main Group was significantly lower at the area of forearm by 0.39 cm (p<0.05) compared with Comparison Group.

Conclusions: Findings have suggested that developed individualized physical rehabilitation programs could be considered as effective methods for improvement of the shoulder range of motion and decrease breast cancer-related lymphedema in patients with post-mastectomy syndrome.
Role of leadership on organizational learning in private universities of Bangladesh
Authors: Uddin Md Mahi , Khan Mohammad Aktaruzzaman , Ali Kalsom
Published: March 2019

The study investigates the influence of leadership styles, i.e. transactional and transformational on promoting organizational learning in some selected private universities in Chittagong, Bangladesh. The study used a quantitative research design. Data have been collected from three private universities of Chittagong through a survey instrument. The study analyzed in total 147 matched completed questionnaires. The findings of the study revealed that contingent reward of transactional leadership and idealized influence and individualized consideration of transformational leadership played significant and positive influence on enhancing organizational learning. Although, findings of this research did not report any significant impact of management by exception-active and management by exception-passive as constructs of transactional leadership as well as inspirational motivation and intellectual stimulation as dimensions of transformational leadership style on organizational learning. The study extends present literature in the field by relating leadership styles and organizational learning focusing on emerging economies particularly in the context of Bangladesh.

IIUC Studies Vol.14(2) December 2017: 09-34
Características clínicas y patológicas del feto y de la madre en el óbito fetal del Instituto Nacional Materno Perinatal. 2011 Al 2015. Lima – Perú
Authors: Ingar-Pinedo Jaime , Advincula-Rebbata Isabel , Limay-Ríos Oscar Antonio , Huertas-Tacchino Erasmo , Castillo-Urquiaga Walter , Ventura-Laveriano Walter , Zarate-Girao Mario , Luna-Figueroa Antonio
Published: March 2019

Objetivo. Determinar las características clínicas y patológicas del feto y de la madre en el óbito fetal del Instituto Nacional MaternoPerinatal del 2011 al 2015. Metodología. Es un estudio de investigación cuantitativo, retrospectivo, observacional, descriptivoy Transversal. Nuestra población es 954 fetos que fallecieron entre la semana 22 de gestación y/o peso mayor de 500 gr en elmomento del nacimiento en el Instituto Nacional Materno Perinatal del 2011 al 2015. Donde nuestra muestra es 273 y se aplicael muestreo probabilístico aleatorio simple. La técnica de recolección de datos que se realiza es la observación y el instrumentoson los registros donde se encuentran los datos (base de datos e historia clínica) que tiene el Instituto Nacional Materno Perinatal.La técnica para procesar los datos se utilizará el programa SPSS Statístics Base v22.0. En el análisis de datos se estimará pordistribución de frecuencias las variables cualitativa, para las variables cuantitativas se estimará medidas de tendencia central(media, mediana) y medidas de dispersión (desviación estándar).
Gürültü Kirliliği Düzeyini Belirlemeye Yönelik Bir Çalışma: Amasya İli Örneği
Authors: CANSARAN Demet
Published: March 2019

Gürültü kirliliği sorunsalı; insan ve çevre sağlığı için önemli bir tehlike oluşturan ve önlem alınması gereken çevre sorunlarından biri olarak karşımıza çıkmaktadır. Ülkemizin pek çok ilinde olduğu gibi,Amasya ilinde de, ilin kentsel gelişim sürecine paralel olarak gürültü kirliliğinin hızlı bir şekilde artmakta olduğu görülmektedir.Bu çalışmada; ilk olarak gürültü kirliliğine yönelik literatür taraması yapılarak gürültü sorunsalı somutlaştırılmaya çalışılmıştır. Daha sonra Amasya ilinin belirli noktalarında yapılan ölçümlerin sonuçları analiz edilerek söz konusu gürültü kirliliğinin ne düzeyde olduğu, belirlenen düzeyin insan ve çevre sağlığını etkileyen potansiyeli belirlenmiş ve önerilerde bulunulmaya çalışılmıştır.
PENGEMBANGAN DAN PEMANFAATAN MULTIMEDIA DALAM PEMBELAJARAN INTERAKTIF
Authors: Miftah Mohamad
Published: March 2019

ENGLISHOn the one hand, the development of information and communication technology especially in education sector grows fastly. On the other hand, in practice, the utilization of this technology shows lower results. The objective of this study is to describe the role of interactive learning by using multimedia and the utilization of multimedia in learning activities. Desk research is used as design of this research and it use qualitative approach. Data mainly are collected from the literature and analyzed descriptively. The findings show that the application of multimedia plays an important role to improve the quality of teaching and learning activities. Later, the development of information and communication technology offers various types of interactive learning and the multimedia has the potential to attrach students to involve in learning activity as well as to increase learning outcomes. Finally, there is a neccessity to accelerate the development of human resources in particular teachers so that the utilization of the technology run optimally. INDONESIAPada satu sisi, perkembangan teknologi informasi dan komunikasi khususnya di dunia pendidikan berkembang dengan cepat. Namun di sisi lain, realitanya pemanfaatan multimedia pembelajaran interaktif masih terbilang rendah. Penelitian bertujuan untuk memberikan gambaran mengenai peran media pembelajaran berbasis komputer sekaligus pengembangan dan pemanfaatannya dalam kegiatan belajar mengajar. Desain penelitian yang digunakan adalah desk research dengan pendekatan kualitatif. Data penelitian diperoleh melalui studi literatur dan selanjutnya data dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa penggunaan multimedia sebagai media pembelajaran dapat memberikan kontribusi yang besar untuk meningkatkan kualitas kegiatan belajar mengajar. Perkembangan produk-produk teknologi informasi komunikasi menawarkan berbagai bentuk media pembelajaran yang variatif sekaligus efektif dalam menarik minat peserta didik untuk belajar yang pada akhirnya mampu meningkatkan hasil belajar siswa. Penyiapan sumber daya manusia khususnya pengajar yang handal menjadi faktor penting agar pemanfaatan multimedia sebagai media pembelajaran interaktif dapat berlangsung secara optimal.
Lazer Kesim Makinası Köprü Sisteminin Sayısal Dinamik Analizi
Authors: Yilmaz Recep , Samanci Ahmet
Published: March 2019

Mühendislik problemlerinin çözümünde kullanılan yöntemler analitik, sayısal ve deneysel olmak üzere üç ana kısımdan oluşmaktadır. Mühendislik uygulamalarında, genel olarak Elastisite teorisine dayalı olan analitik çözümlerin zor veya imkânsız olduğu gibi durumlarda, sonlu eleman, sınır eleman, sonlu farklar gibi sayısal çözüm teknikleri sıklıkla kullanılmaktadır. Bu çalışmada ürün tasarım ve optimizasyon işlemlerinin deneysel deneme yanılmalara maruz kalmadan sayısal ortamda gerçekleştirilmesi ile üretim maliyetlerinin çok önemli bir kısmının ve fazladan harcanan zamanın önüne geçilerek tasarım için en uygun parametreler belirlenmek istenmiştir. Bu kapsamda Solidworks Premium Edition programı ile tasarlanan lazer kesim makinasına ait köprü sisteminin CAD (Bilgisayar Destekli Çizim) modelinin yine Solidworks Simulation Premium programı ile dinamik analizi gerçekleştirilmiş ve sistemin maksimum stres durumuna maruz kaldığı nokta ve konum belirlenmiştir. Bu çalışma ayrıca nihai tasarım için bir altyapı sağlaması ve sunduğu veriler doğrultusunda topolojik optimizasyon çalışmaları gerçekleştirilebilmesi açısından önem teşkil etmektedir.
Otonom taşıtlar için hiposikloid direksiyon dişli kutusu tasarımı ve prototip imalatı
Authors: Öztürk Erkan , Köroğlu Selim , Can Özer , Güler Furkan , Bıyıklı Fatma Merve , Balkan Murat Eren , Belli Buse , Demirçalı Akif
Published: March 2019

Otonom taşıtlar üzerine yapılan çalışmalardaki artışın neticesinde, taşıt üzerindeki mevcut sistemlerde değişimlere gidilmektedir. Günümüzde otomobillerde genel olarak kullanılan direksiyon dişli kutuları kremayer tipinde olup, bunların tahrikinde düşük hız ve yüksek momente sahip elektrik motorlarının kullanılması gereksinimi dişli kutularında yeni yaklaşımların ele alınmasını gerekli kılmıştır. Bu çalışmada düşük moment ve yüksek devirli bir elektrik motor ile tahrik için uygun redüksiyon oranına sahip olan, literatürde kullanımına rastlanmamış bir direksiyon dişli kutusu tasarlanmıştır. Hiposikloid dişli sistemlerinin hem istenilen redüksiyon oranının sağlanmasında hemde tekerlek dönüş açılarının hassasiyetinde büyük bir avantaja sahip olduğu görülmüştür.
Controlling The Flow Structure of Circular Cylinder by Using Concentrically Installed Perforated Cylinder and Splitter Plate
Authors: Pinar Engin , Yeniçun Arda , Özkan Göktürk Memduh , Durhasan Tahir , Olmus Umutcan , Akilli Hüseyin , Şahin Beşir
Published: March 2019

The purpose of this work was to control undesired structure and vibrations caused from vortex shedding by controlling the flow downstream of the cylinder. The porosities of the outer cylinder and the splitter plate used for this purpose are available. The other parameter was plate angle based on the flow direction as a reference. The parameter expressed as porosities, ß was chosen to have a %70 openness for the outer cylinder (ß = 0.7) and was kept constant throughout all experiments. On the other hand, two different porosities were used for the splitter plate. For the first plate, there was no hole on the plate which we call ß = 0 or solid plate. For the second plate, it has ß = 0.7 porosity. ß = 0.7 porosity was also the value chosen for the outer cylinder. The range of the splitter plate angle was selected within 60o? ? ?180o with an increment of 30o. The results were extracted using two different methods. The first was the dye visualization experiment and the second is the PIV (Particle Image Velocimetry) measurement. As a result, it was observed that independently from the outer cylinder effect, the plate porosity and plate angle are effective on the level of turbulence and the flow structure in the annular region.
Teorik Nihai Kazık Taşıma Gücü Hesaplamaları ile Kazık Yükleme Yöntemlerin Karşılaştırmalı Analizi
Authors: Kabaca Halil , Vural İsa
Published: March 2019

Kendisi için elverişsiz veya yetersiz bir zemine oturan mühendislik yapısının, oturduğu zemini daha verimli kullanma yollarından birisi zemin içerisinde kazık imalatı yapmaktır. Büyük ölçekli yapılarda kazık taşıma gücünü hatalı belirlemek aşırı dizayna veya güvensiz tarafta kalmaya neden olabilmektedir. Bu nedenle kazıkların zemin ve/veya kaya ortam içerisindeki taşıma gücünü gerçeğe yakın bir biçimde belirlemek gerek yapı güvenliği gerekse ekonomi açısından önem taşımaktadır.Bu çalışmada, SPT deneyinden kazık nihai taşıma gücü veren teorik yöntemler ile matematiksel modele dayalı kazık yükleme deneyi değerlendirme yöntemleri karşılaştırılmıştır. 8 adet kazık yükleme deneyi; SPT deneyine dayanan teorik yöntemler ve matematiksel modele dayalı kazık yükleme deneyi değerlendirme yöntemleri ile tahlil edilmiştir. Teorik SPT yöntemleri ve kazık yükleme deneyi değerlendirme yöntemleri iki ayrı blok olarak kıyaslanmıştır.
Promoting a Research-Based Education through Undergraduate Research Experience for Engineering Students
Authors: Akl Maya Abi , Bouhali Othmane , Toufique Yassine
Published: March 2019

Various studies have shown the crucial and strong impact that undergraduate research has on the learning outcome of students and its role in clarifying their career path. Therefore, many colleges and universities are promoting undergraduate research experience amongst their students. Texas A&M University at Qatar (TAMUQ), a branch campus of Texas A&M University in College Station in the state of Texas and one of the six American University campuses in Education City, Qatar is actively involving its engineering students in research projects spanning different disciplines across its academic programs. This paper describes how the High Energy and Medical Physics Group at TAMUQ supports and engages the undergraduate students in research activities, summarizes the outcomes of their work and the impact on their career.
Electrooxidation of Alkyd Resin Production Wastewater By Boren Doped Diamond Electrode
Authors: Gengec Nevin Atalay , Gengec Erhan , Can Orhan Taner , Kobya Mehmet
Published: March 2019

Wastewater of alkyd resin production (ARW) has low pH value (2.3) and high organic matters (15,304 mg/L of TOC and 45,220 mg/L of COD) as well as is toxic and non-biodegradable. In addition to, it does not respond to chemical coagulation and adsorption. Thus, advance oxidation processes (AOPs) or combinations of AOPs are very important alternatives for treatment of ARW due to the advantages which they have. The purpose of this study is to investigate the treatment efficiencies of anodic electrooxidation process by boren doped diamond electrode (BDD). The effect of process parameters such as current density (40-100 mA/cm2), operation time (0-180 min.) and pH of wastewater were investigated. The maximum removal efficiencies were obtained as 42.3 % of TOC and 43.4 % of COD at the 100 mA/cm2, 180 min and pH of 3.5. The consumed electric energy and operation cost were calculated as 169.07 kWh/m3 and 42.27 TL. Although as the removal ratios were not seemed very high, the removed COD and TOC values showed the potential of EO with BDD. Consequently, EO was a suitable process for the treatment of ARW; however the results showed that it must be applied with combination of other AOPs.
CFRP ile Güçlendirilmiş Eğilme Yükü Etkisindeki Betonarme Kirişlerin Sonlu Elemanlar Yöntemi ile Analizi
Authors: Hussien Wael Mansur , Sarbıyık Ali , Aydın Emine
Published: March 2019

Bu çalışmada, eğilme yüküne karşı Karbon Fiber Takviyeli Polimer (CFRP) kompozitler ile güçlendirilmiş betonarme kirişlerin davranışı abaqus sonlu elemanlar programı ile modellenmiştir. Düşük dayanımlı beton, yetersiz eğilme ve kesme donatısı kullanılarak üretilen dikdörtgen kesitli betonarme kirişler, tekyönlü karbon kumaşlar enine ve boyuna doğrultularda yönlendirilerek U şeklinde güçlendirilmiştir. Dört nokta eğilme tersti ile test edilen kirişlerin eğilme davranışları tespit edilerek Sonlu Elemanlar metodu (SEM) ile doğrulanmıştır. SEM programında istenen parametreler, deneysel çalışmalardan, literatürden, modellemede yaygın olarak kullanılan bazı temel formüllerden ve ürün kataloglarından elde edilmiştir. Gerekli parametreler SEM paket programına girilerek betonarme kiriş modeli kurulmuştur. Betonarme kirişin davranışı doğrulanarak CFRP ile güçlendirilmiş kirişler modellenmiştir. SEM’de CFRP kompozitler kabuk eleman olarak kirişin alt ve yan yüzeylerine tanımlanmıştır. Ağ boyutu ve geometrik şekli, genişleme açısı gibi model parametreleri, betonarme kirişin davranışını önemli ölçüde etkilediği görülmüştür. Elde edilen sonuçlara göre betonarme kiriş için en uygun parametreler tespit edilmiştir. SEM sonuçları deneysel çalışmadan elde edilen yük-sehim grafikleri ile karşılaştırılarak oluşturulan model doğrulanmıştır.
A Review on the Evolution of the Turkey Mining Sector
Authors: Kekec Bilgehan , Bilim Niyazi , Ghiloufi Dhikra
Published: March 2019

Mining is an extremely crucial sector that provides the necessary raw materials for several industries. The mining sector plays a significant part in the development and the socio-economical growth of any country as natural resources directly contribute to its value-added and increasing its employment rate. Our country is characterized by the wealth and the diversity of its mineral reserves. Therefore, empowering the production ensures the economic and technological development of the country by creating employment opportunities and meeting the needs in raw materials of several sectors. This paper reviews the international mining market by investigating the top produced minerals and their producing countries. In addition, this review paper studies the development of the mining sector in Turkey in the last few years and its contribution to the socio-economical growth of the country.
Effects of Selected Warm Mix Asphalt Additives on Viscosity Properties of Binder
Authors: Aktas Bekir , Aytekin Şuayıp , Aslan Şevket
Published: March 2019

Asphalt industry has spent great effort to reduce mixing and compaction temperatures of the asphalt mixture because of increasing emission ratios and energy costs. The production of Warm Mix Asphalt (WMA) is related to attaining proper viscosity value of the binder to increase aggregate-binder bonding and compaction of the mixture at lower temperatures. The most important advantages of WMA are lower energy consumption and less pollution. Generally, the production temperature of the asphalt mixture depends on the asphalt properties. In this study, effects of selected warm mix asphalt additives of a certain amount by weight are investigated in terms of viscosity in a Brookfield Rotational Viscometer. The reducing viscosity of the binders will increase production and compaction ability of the mixtures. Also, it will allow to reduce mixing and compaction temperature. Therefore, with the decreased cooling rate asphalt mixtures can haul longer distances and give more time for site construction. The findings of this study show that under the same rotational speed viscosity decreases when additives are used.
Modelling and Dynamic Simulation of a Solar Vehicle for Track Events
Authors: Serin Onur
Published: March 2019

World Solar Challenge (WSC) is a race held for solar powered vehicles from all around the world in every two years and multiple contestants from Turkey attend to this competition. The aim of this paper is to find a way of increasing the performance of vehicle during the qualifying lap of the race via modelling and dynamically simulating the solar vehicle. For this study, IPG/Carmaker software is used and a solar vehicle formed by two front and 1 rear wheel is modelled. Performance enhancer parameters including the vehicle design is selected and implemented to the model. Additional to vehicle model, race track is also modelled according to its physical features. According to gathered simulation results vehicle velocity and race duration is optimized. Vehicle is also tested on additional test cycles from literature and test outcomes are compared. Moreover, discussion between studies from literature is held.
Numerical Investigation of Transitional Flow over a Flat Plate under Constant Heat Fluxes
Authors: Canbolat Gökhan , Yıldızeli Alperen , Köse Haluk Anıl , Çadırcı Sertaç
Published: March 2019

In this study, a boundary layer flow over a flat plate is investigated numerically at constant inlet freestream velocity and turbulence intensity. After intensive mesh refinements, an adequate computational domain is determined. Four turbulence models (k-epsilon, k-omega, k-omega SST, Transition SST) are used to analyze the boundary layer flow. Local surface friction coefficient distribution is obtained and compared to each other to assess the most convenient turbulence model. The Computational Fluid Dynamics (CFD) results show that the Transition SST turbulence model demonstrates the most realistic surface friction coefficient (Cf) distribution in agreement with the experimental data. Additionally; the effects of constant heat fluxes on Cf values are investigated and it is found that the heating process moves transition backward compared to isothermal case. Moreover, it is fount that Cf values in the turbulent region decrease compared to isothermal case.
Nanofluids and heat pipe limitations
Authors: Mekcem Maroua
Published: March 2019

Given the high efficiency of heat pipes as heat transfer devices, which work with phase changing principle (evaporation and condensation) and without requiring any external energy input, the heat pipes have been utilized for many years in several areas. However, heat transfer in heat pipes is limited by physical phenomena which appear during its operation, called heat pipe limitations; these can limit and reduce its performance. At this state, the use of nanofluids instead of conventional fluids come a solution after that Choi and Eastman (1995) confirmed the feasibility of enhancing the thermal conductivity of fluids by adding nanoparticles. This paper represents a general description of heat pipes, including a brief historical perspective, principle of operation and explanation of main heat transfer limitations. The work shows the contribution of nanofluids in pushing back the heat pipe limitations.
Applied Technique for Utilizing Total Station in Monitoring Differential Settlement
Authors: Aldelgawy Mohammed
Published: March 2019

Recently, many problems regarding differential settlement for newly constructed buildings in Fayoum city, Egypt have been monitored. This research presents an applied technique for utilizing total station in observing horizontal and vertical movements happening by time for some building in Fayoum city. The building was monitored for thirty three months divided into three phases. In the first phase, façade of building was observed for four and half months to monitor differential settlement and take the right decision for resolving differential settlement problem. The second phase was the execution of that decision. Time for second phase was four and half months. Finally, in the third phase façade of building was reobserved for two years in order to make sure that the movement of façade points was stopped. The obtained results showed that the used technique provided a powerful and efficient tool to observe movements of façade points by time.
The Design And Production Of Transfer Trolleys Used In Marble Industry
Authors: Aydin Abdurrahman , Kurtmen Erdem
Published: March 2019

This study is about design and manufacturing of transfer trolleys which are used in marble cutting process in marble industry. During the cutting process, all movements are controlled by switches and control buttons. Different forces are applied on the trolley and the trolleys are exposed to an operation under water which is used for cooling the cutting tool. Since the deflection of the transfer trolley will affect the quality of cutting during the cutting process, the concrete is poured into the body of the transfer trolley to reduce the deflections during the design and to maintain a rigid body. Natural stone industry has an important place both in Turkey and world trade and it is classified as "very hazardous" for processing, modeling and finishing operations according to occupational health and safety legislations. The risks which may occur during the cutting process have been identified and taken into consideration, necessary electronic and mechanical precautions have been taken to eliminate these risks.
Depth Optimization Analysis of Articulated Steering Hinge Position Based on Genetic Algorithm
Authors: Cao Bing-wei , Liu Xin-hui , Chen Wei , Zhang Yong , Li Ai-min
Published: March 2019

Articulated steering is affected by the position of the articulated points of the steering cylinder. When the two steering cylinders turn, there is a stroke difference and arm of force difference. The existence of the above differences causes the pressure fluctuation of the steering system. Firstly, the mathematical model of the steering mechanism is established through theoretical analysis. Then, the coordinates of the hinge points of the steering cylinder are optimized using genetic algorithm (GA) with the stroke difference function and cylinder pressure function as the objective functions. The curves of the stroke difference and the arm of force difference of the steering cylinder are obtained by mathematical modeling, and the correctness of the GA is verified. According to the optimization results, the wheel loader prototype was reconstructed, and the reconstruction verified by corresponding sensors. The experimental curves show that the steering system has no obvious pressure fluctuation. Finally, the arm of force difference and stroke difference curves were analyzed, and it was concluded that the arm of force difference was the main cause of pressure fluctuation. The objective function was improved, and the arm of force function and cylinder pressure function were taken as the objective functions to continue the optimization by GA. The arm of force difference and stroke difference after optimization were reduced, which provides a constructive reference for the design of articulated steering systems in the future.
Simulation of Spectra Code (SOS) for ITER Active Beam Spectroscopy
Authors: von Hellermann Manfred , de Bock Maarten , Marchuk Oleksandr , Reiter Detlev , Serov Stanislav , Walsh Michael
Published: March 2019

The concept and structure of the Simulation of Spectra (SOS) code is described starting with an introduction to the physics background of the project and the development of a simulation tool enabling the modeling of charge-exchange recombination spectroscopy (CXRS) and associated passive background spectra observed in hot fusion plasmas. The generic structure of the code implies its general applicability to any fusion device, the development is indeed based on over two decades of spectroscopic observations and validation of derived plasma data. Four main types of active spectra are addressed in SOS. The first type represents thermal low-Z impurity ions and the associated spectral background. The second type of spectra represent slowing-down high energy ions created from either thermo-nuclear fusion reactions or ions from injected high energy neutral beams. Two other modules are dedicated to CXRS spectra representing bulk plasma ions (H+, D+, or T+) and beam emission spectroscopy (BES) or Motional Stark Effect (MSE) spectrum appearing in the same spectral range. The main part of the paper describes the physics background for the underlying emission processes: active and passive CXRS emission, continuum radiation, edge line emission, halo and plume effect, or finally the charge exchange (CX) cross-section effects on line shapes. The description is summarized by modeling the fast ions emissions, e.g., either of the α particles of the fusion reaction or of the beam ions itself.
Lifetime Prediction of Lithium-Ion Capacitors Based on Accelerated Aging Tests
Authors: El Ghossein Nagham , Sari Ali , Venet Pascal
Published: March 2019

Lithium-ion Capacitors (LiCs) that have intermediate properties between lithium-ion batteries and supercapacitors are still considered as a new technology whose aging is not well studied in the literature. This paper presents the results of accelerated aging tests applied on 12 samples of LiCs. Two high temperatures (60 °C and 70 °C) and two voltage values were used for aging acceleration for 20 months. The maximum and the minimum voltages (3.8 V and 2.2 V respectively) had different effects on capacitance fade. Cells aging at 2.2 V encountered extreme decrease of the capacitance. After storing them for only one month at 60 °C, they lost around 22% of their initial capacitance. For this reason, an aging model was developed for cells aging at the lowest voltage value to emphasize the huge decrease of the lifetime at this voltage condition. Moreover, two measurement tools of the capacitance were compared to find the optimal method for following the evolution of the aging process. It was proved that electrochemical impedance spectroscopy is the most accurate measurement technique that can reveal the actual level of degradation inside a LiC cell.
NMDA Receptor Signaling Mediates cFos Expression via Top2β-Induced DSBs in Glioblastoma Cells
Authors: Lutz Henrik , Nguyen Thy Anh , Joswig Juliane , Rau Kerstin , Laube Bodo
Published: March 2019

The activation of Ca2+-permeable N-methyl-D-aspartic acid (NMDA) receptor channels (NMDARs) is crucial for the development and survival of neurons, but many cancers use NMDAR-mediated signaling as well, enhancing the growth and invasiveness of tumors. Thus, NMDAR-dependent pathways emerge as a promising target in cancer therapy. Here, we use the LN229 and U-87MG glioblastoma multiforme (GBM) cells and immunofluorescence staining of 53BP1 to analyze NMDAR-induced DNA double-strand breaks (DSBs), which represent an important step in the NMDAR signaling pathway in neurons by facilitating the expression of early response genes. Our results show that NMDAR activation leads to the induction of DSBs in a subpopulation of glioma cells. In a further analogy to neurons, our results demonstrate that the induction of DSBs in LN229 cells is dependent on the activity of topoisomerase IIβ (Top2β). Western blot analysis revealed that the inhibition of NMDARs, cAMP-responsive element binding transcription factor (CREB) and Top2β decreased the expression of the proto-oncogene cFos. Knockdown of Top2β with siRNAs resulted in a downregulation of cFos and increased the radiosensitivity of LN229 cells in clonogenic survival. We also observed impaired cFos expression upon NMDAR and Top2β inhibition in a primary GBM cell line, suggesting that NMDAR signaling may be widely used by GBMs, demonstrating the potential of targeting NMDAR signaling proteins for GBM therapy.
Ice-Templated Geopolymer—Fe/Mn Oxide Composites Conceived as Oxygen Carriers
Authors: Papa Elettra , Medri Valentina , Natali Murri Annalisa , Miccio Francesco , Landi Elena
Published: March 2019

Ice-templating (freeze-casting) technique was applied to a novel class of geopolymer composites containing Fe/Mn oxides, previously tested and reported in others works as synthetic oxygen carriers for chemical looping combustion (CLC), in order to obtain composite monoliths with lamellar macro-porosities by unidirectional freezing of water-based sol-gel systems. Geopolymer-Fe/Mn oxides composites carriers were also produced as beads, suitable for fixed bed reactors, by an injection-solidification method in liquid nitrogen. After conditioning at 900 °C, the temperature needed for CLC applications, the composite beads and monoliths possess similar total porosity % and total pore volume, being ≈65% and 570 mm3 g−1, respectively, as well as a specific surface area of around 2.4–2.9 m2/g.
The Potential Application of Spring Sargassum glaucescens Extracts in the Moisture-Retention of Keratinocytes and Dermal Fibroblast Regeneration after UVA-Irradiation
Authors: Li Zih-yi , Yu Chin-Hsiu , Lin Yu-Ting , Su Hsiang-Ling , Kan Kai-Wen , Liu Fu-Chen , Chen Ciao-Ting , Lin Yi-Tsen , Hsu Hsin-Fen , Lin Yung-Hsiang
Published: March 2019

Sargassum glaucescens is a marine brown alga with high antioxidant activity. To evaluate the potential application of Sargassum glaucescens extracts (SGE) in skincare, we performed in vitro assays in dermal fibroblasts and epidermal keratinocytes. The antioxidant activity of SGE was confirmed by the suppression of H2O2-induced reactive oxygen species (ROS) production in dermal fibroblasts and in vitro 1,1-diphenyl-2-picrylhydrazyl (DPPH) scavenging activity. In the wound healing assay, application of 2 mg/ml SGE stimulated the wound closure of CCD-966SK fibroblasts by a 2.95-fold in comparison to the control. Furthermore, treatment with SGE of concentrations ranging from 0.25 to 1 mg/ml promoted CCD-966SK cell regeneration after UVA irradiation. At the molecular level, 1 mg/ml SGE induced expressions of anti-oxidative genes SOD1 (Superoxide dismutase 1) and GPX1 (Glutathione peroxidase 1), and DNA repair regulatory genes XRCC1 (X-ray repair cross-complementing protein 1) and ERCC6 (Excision repair cross-complementation Group 6) in CCD-966SK cells after UVA irradiation. Therefore, SGE displayed beneficial effects on cell regeneration and the protection of dermal cells against UVA irradiation. In epidermal cells, SGE stimulated the cell proliferation of human primary epidermal keratinocytes. Application of 0.03125 mg/ml SGE induced the expressions of skin barrier-related genes TGM1 (Transglutaminase 1), KRT10 (Keratin 10) and KRT14 in keratinocytes. Meanwhile, SGE induced the gene expression of FLG (Filaggrin), which promoted the production of natural moisturizing factor (NMF) for maintaining the moisture and barrier functions of skin.
New Sellmeier and Thermo-Optic Dispersion Formulas for AgGaS2
Authors: Kato Kiyoshi , Okamoto Takayuki , Grechin Sergey , Umemura Nobuhiro
Published: March 2019

This paper reports on the new Sellmeier and thermo-optic dispersion formulas that provide a good reproduction of the temperature-dependent phase-matching conditions for second-harmonic generation (SHG) and sum-frequency generation (SFG) of a CO2 laser and a Nd:YAG laser-pumped KTiOPO4 (KTP) optical parametric oscillator (OPO) in the 0.8859–10.5910 μm range as well as those for difference-frequency generation (DFG) between the two diode lasers in the 4.9–6.5 μm range and DFG between the two periodically poled LiNbO3 (PPLN) OPOs in the 5–12 μm range thus far reported in the literature.
May the Diversity of Epiphytic Lichens Be Used in Environmental Forensics?
Authors: Loppi Stefano
Published: March 2019

Epiphytic (tree inhabiting) lichens, well-known biomonitors of atmospheric pollution, have a great potential for being used in environmental forensics. Monitoring changes in biodiversity is a useful method for evaluating the quality of an ecosystem. Lichen species occurring within an area show measurable responses to environmental changes, and lichen biodiversity counts can be taken as reliable estimates of environmental quality, with high values corresponding to unpolluted or low polluted conditions and low values to polluted ones. Lichen diversity studies may be very useful in the framework of environmental forensics, since they may highlight the biological effects of pollutants and constitute the base for epidemiological studies. It is thus of paramount importance that great care is taken in the interpretation of the results, especially in the context of a rapidly changing environment and facing global change scenarios. For this reason, it seems advisable to produce several zonal maps, each based on different species groups, and each interpreted in a different way. This exercise could also be a valid support in the framework of a sensitivity analysis, to support or reject the primary results. In addition, a clear and formal expression of the overall uncertainty of the outputs is absolutely necessary.
A New Quota Approach to Electoral Disproportionality
Authors: Martínez-Panero Miguel , Arredondo Verónica , Peña Teresa , Ramírez Victoriano
Published: March 2019

In this paper electoral disproportionality is split into two types: (1) Forced or unavoidable, due to the very nature of the apportionment problem; and (2) non-forced. While disproportionality indexes proposed in the literature do not distinguish between such components, we design an index, called “quota index”, just measuring avoidable disproportionality. Unlike the previous indexes, the new one can be zero in real situations. Furthermore, this index presents an interesting interpretation concerning transfers of seats. Properties of the quota index and relationships with some usual disproportionality indexes are analyzed. Finally, an empirical approach is undertaken for different countries and elections.
A Numerical and Experimental Investigation of Dimple Effects on Heat Transfer Enhancement with Impinging Jets
Authors: Sriromreun Parkpoom , Sriromreun Paranee
Published: March 2019

This research was aimed at studying the numerical and experimental characteristics of the air flow impinging on a dimpled surface. Heat transfer enhancement between a hot surface and the air is supposed to be obtained from a dimple effect. In the experiment, 15 types of test plate were investigated at different distances between the jet and test plate (B), dimple diameter (d) and dimple distance (Er and Eθ). The testing fluid was air presented in an impinging jet flowing at Re = 1500 to 14,600. A comparison of the heat transfer coefficient was performed between the jet impingement on the dimpled surface and the flat plate. The velocity vector and the temperature contour showed the different air flow characteristics from different test plates. The highest thermal enhancement factor (TEF) was observed under the conditions of B = 2 d, d = 1 cm, Er= 2 d, Eθ = 1.5 d and Re = 1500. This TEF was obtained from the dimpled surface and was 5.5 times higher than that observed in the flat plate.
Improved CRM Model for Inter-Well Connectivity Estimation and Production Optimization: Case Study for Karst Reservoirs
Authors: Wang Daigang , Li Yong , Zhang Jing , Wei Chenji , Jiao Yuwei , Wang Qi
Published: March 2019

Due to the coexistence of multiple types of reservoir bodies and widely distributed aquifer support in karst carbonate reservoirs, it remains a great challenge to understand the reservoir flow dynamics based on traditional capacitance–resistance (CRM) models and Darcy’s percolation theory. To solve this issue, an improved injector–producer-pair-based CRM model coupling the effect of active aquifer support was first developed and combined with the newly-developed Stochastic Simplex Approximate Gradient (StoSAG) optimization algorithm for accurate inter-well connectivity estimation in a waterflood operation. The improved CRM–StoSAG workflow was further applied for real-time production optimization to find the optimal water injection rate at each control step by maximizing the net present value of production. The case study conducted for a typical karst reservoir indicated that the proposed workflow can provide good insight into complex multi-phase flow behaviors in karst carbonate reservoirs. Low connectivity coefficient and time delay constant most likely refer to active aquifer support through a high-permeable flow channel. Moreover, the injector–producer pair may be interconnected by complex fissure zones when both the connectivity coefficient and time delay constant are relatively large.
Evaluation Study of Potential Use of Advanced Conductors in Transmission Line Projects
Authors: Beryozkina Svetlana
Published: March 2019

Transmission networks recently faced new technical and economic challenges. The direct use of advanced technologies and modern methods could solve these issues. This paper discusses the potential application of straightforward technology such as high-temperature low-sag conductors (HTLScs) as an additional measure for the protection and effective operation of overhead power lines. An evaluation was conducted to determine an approach for selecting the cross-sectional area and type of conductor with respect to a fault current limitation. It showed the potential benefits of using HTLScs based on an assessment of the throughput capacity and up-front capital costs. A case study considered two scenarios: the construction of a new power line and reconductoring of the existing one. The data for a real project with two overhead power lines were used. The obtained results are analyzed and discussed in detail in this paper.