bluuebunny/crossref_metadata_2025 huggingface dataset:
Defasagem idade-série em escolas estaduais de ensino médio do Rio Grande do Sul
Authors: Fritsch Rosangela , Vitelli Ricardo , Rocha Cleonice
Published: September 2019

Tem como objetivo discutir indicadores de qualidade da educação, com ênfase nas taxas de defasagem idade-série no ensino médio, em três escolas públicas estaduais de São Leopoldo. É parte de uma produção de pesquisas do subprojeto Estudo da Evasão no Ensino Médio e Superior em São Leopoldo. Compõe o projeto Observatório da Educação – Indicadores de Qualidade e Gestão Democrática. Os dados foram coletados em banco de dados do Instituto Nacional de Estudos e Pesquisas Educacionais Anísio Teixeira (Inep) e nas escolas pesquisadas. A análise descritiva mostra que a defasagem idade-série se acentua conforme se segmenta o público. Existem diferenças quando se comparam resultados entre escola, assim como turnos, séries e condição dos estudantes. Conclui-se que as políticas educacionais são insuficientes ou ineficazes, principalmente por não considerarem as diferenças existentes entre as realidades de seus estudantes.
Revista Completa
Authors: Executiva Editoria
Published: September 2019

Revista Completa
Implantação e implementação do Proinfo no município de Bataguassu, Mato do Grosso do Sul: o olhar dos profissionais da educação
Authors: Zandavalli Carla , Pedrosa Dirceu
Published: September 2019

Expõe resultados de uma pesquisa desenvolvida em 2012 e 2013, com intuito de analisar o processo de implantação e implementação do Programa Nacional de Tecnologia Educacional (Proinfo), em Bataguassu/Mato Grosso do Sul. O estudo de caso foi realizado em três fases: (a) revisão bibliográfica, análise de documentos do Estado de Mato Grosso do Sul e da legislação em vigor; (b) aplicação de questionários aos professores regentes e entrevista semiestruturada aos professores das Salas de Tecnologia Educacional (STEs) das referidas escolas; (c) sistematização e análise dos elementos coletados. Confrontados os dados obtidos, constatou-se que existe o reconhecimento dos professores pesquisados sobre a importância das STEs para o ensino, entretanto ele não se traduz na utilização adequada das tecnologias da informação e da comunicação (TICs), em função da resistência às TICs, da descontinuidade dos cursos ofertados pelo Proinfo, fragmentando a formação continuada desses docentes, bem como da carga horária trabalhada, considerada excessiva pelos sujeitos da pesquisa. Os resultados obtidos revelam a necessidade de mudanças nas políticas educacionais específicas quanto à melhoria das condições de trabalho dos professores e às condições efetivas de formação em serviço, para que seja concretizada a utilização crítica e criativa das TICs como instrumentos de mediação de conhecimentos.
Índice do Volume 95
Authors: Arisawa Elisangela , Castro Sâmara Roberta
Published: September 2019

Índice do Volume 95
Teoría y práctica. Imaginarios y educación en arte
Authors: Caballero Mónica , Davis Fernando , Butler Tau Gabriela , Tabarrozzi Marcos
Published: September 2019

El nombre de la asignatura Teoría de la Práctica Artística, que dictamos en la Facultad de la Bellas Artes (FBA) de la Universidad Nacional de La Plata (UNLP), articula dos términos, teoría y práctica artística, que serán el eje de este artículo. Reflexionamos sobre la relación entre ambos, un imaginario del arte y las implicancias que tienen en las experiencias y en los procesos de aprendizaje durante el dictado de la asignatura.
Imágenes poético-testimoniales en el aula. Problemas epistemológicos entre memoria e historia
Authors: Basso Florencia
Published: September 2019

Reflexionaremos sobre tres problemáticas epistemológicas con relación a los Estudios de Memoria, a partir de imágenes poético-testimoniales: la ruptura con el pensamiento dicotómico en términos de verdad/ficción; el espacio de lo íntimo como lugar de transmisión de memorias y narración de otra historia; y el tiempo complejo de la imagen en contraposición al tiempo lineal histórico. Desarrollamos estos lineamientos teóricos pensando en el potencial didáctico de las imágenes en la elaboración del pasado histórico en el aula.
La cigüeña cyber. En la dulce construcción de un futuro extraño
Authors: Leoni Daniela Belén
Published: September 2019

Cuatro años después de que el colectivo Laboria Cuboniks presentara el manifiesto xenofeminista, Helen Hester profundiza en Xenofeminismo ciertos supuestos y conceptos generales del manifiesto, útiles para abordar la problemática central de su investigación: el futuro de la reproducción, tanto biológica como social. A través de un análisis crítico de las diferentes posturas y representaciones en torno al futuro reproductivo, la autora traza posibles caminos hacia otros modos de vinculación afectiva y hacia nuevas prácticas de hospitalidad; caminos atravesados por las transformaciones tecnológicas y su empleo con fines emancipatorios.
Museo dark-net. Acumulación y circulación de arte
Authors: Avellaneda Florencia
Published: September 2019

En Arte Duty Free: el arte en la era de la guerra civil planetaria (2018), Hito Steyerel nos invita a reflexionar sobre un nuevo escenario global caracterizado por una guerra civil planetaria plagada de nuevas prácticas y saberes que se escapan al ojo humano. Como producto de esto, comienzan a desplegarse nuevas formas de pensar las imágenes y su circulación, el arte y los museos. A su vez, se produce un cambio en la noción tradicional de museo localizado en un estado-nación que ha de desplegarse sobre espacios offshore, dentro de un paisaje oscuro, sin fronteras y libre de impuestos, un museo al estilo dark-net.
Infraestructuras para el futuro. La aceleración en el capitalismo tardío
Authors: Leonardi Yamil E.
Published: September 2019

Desde la década del setenta, el capitalismo se presenta cada vez más como una realidad sin alternativas. Esta, montada cual velo alrededor de su carácter real contradictorio, ha sido desglosada muchas veces por la izquierda para la imaginación de un mundo después del trabajo. En los últimos años, la aceleración producida por el desarrollo tecnológico, al mismo tiempo que configura nuevas formas de alienación, se manifiesta como la posibilidad de transición hacia un más allá del capitalismo. Pero, para poder aprovecharla, antes es necesario, como afirma Nick Srnicek, un diagnóstico crítico de la economía actual que tenga en cuenta su infraestructura fundamental: las plataformas.
Revertir el proyecto de las cosas. Un análisis de la cosificación de la vida
Authors: Benavides Sol Ailén
Published: September 2019

En Contra-pedagogías de la crueldad (2018), la antropóloga Rita Segato presenta un panorama de conceptos centrales de su obra de acuerdo a una serie de cuatro clases dictadas en 2016. Analizando diversas prácticas de nuestras sociedades contemporáneas, situadas en sus procesos históricos, relaciona las diferentes formas de patriarcado y las persistencias de la conquista. Sobre esa base propone claves para pensar en prácticas y teorías que combatan las estructuras de violencia en que nos vemos inmersos.
Bioarte. Hacia una nueva metodología interdisciplinaria
Authors: Geymonat Analía Amalia
Published: September 2019

Desde la docencia en Educación Artística surgió la necesidad de investigar la materialidad del bioarte en el contexto de una pedagogía particular. Para tal fin, se propuso la denominación pedagogía bioartística, entendiendo que el bioarte es una nueva metodología interdisciplinaria que facilita los procesos de comprensión e intercambio interdepartamental. Esto proporciona un espacio de intervención dialógica y potencia la búsqueda y hallazgo de acuerdos significativos en la construcción de un nuevo espacio de conocimiento.
The phenomenon of reverse mutation in a patient with Wiskott–Aldrich syndrome
Authors: Nesterenko Z. A. , Kuzmenko N. B. , Burlakov V. I. , Victorova E. A. , Vedmedskaya V. A. , Pershin D. E. , Kieva A. M. , Mersiyanova I. V. , Varlamova T. V. , Raykina E. V. , Deripapa E. V.
Published: September 2019

Primary immunodeficiencies (PIDS) are genetically caused heterogeneous diseases of the immune system. One of the genetic phenomenon affecting the phenotypic diversity of PIDS is a reverse somatic mosaicism (RM) observed in different groups of PIDS. The majority of RM cases are described in patients with Wiskott–Aldrich syndrome (WAS). Despite the fact that PM does not always lead to a mild form of the disease, the presence of this phenomenon can cause the delay of diagnosis and start of the appropriate treatment. This article presents the case of a patient with Wiskott–Aldrich syndrome with a reverse mutation in the WAS gene. Parents gave their consent to use information about the child in the article.
Reversible platelet aggregation in the presence of calcium ions: mechanisms and potential value
Authors: Filkova A. A. , Panteleev M. A. , Sveshnikova A. N.
Published: September 2019

Disorders in the functions of platelets – blood cells responsible for the blood clots formation and prevention – are observed as independent diseases, as a complication of cancer and hematological diseases or as a result of a therapy. Nowadays, a test of platelet aggregation by aggregometry is the only diagnostic method for assessing the platelets functions. There are several varieties of aggregometry, which differ both in the method of recording the formation of platelet aggregates and in the method of preparing platelets for the experiment. In most laboratories, it is customary to conduct aggregometry in platelet-rich plasma in the presence of citrate ions. In this case, the concentration of calcium ions in plasma decreases, it prevents the thrombin formation and the plasma coagulation. On the other hand, it has long been known that platelet aggregation in response to ADP in the presence of calcium ions (in blood plasma collected in heparin or hirudin tubes, also blocking plasma clotting) is reversible: after 1-5 minutes after the addition of the activator, the disaggregation begins until the light transmission of the solution (platelet concentration) returns to its original level. This phenomenon is called "reversible” platelet aggregation. Reversible aggregation (“disaggregation”) is sometimes observed in aggregometry of citrate plasma, especially in pediatric patients. However, it is usually not considered normal and is considered a sign of platelet dysfunction. This review considers the known mechanisms of disaggregation in the presence or absence of calcium ions in the medium. The role of secondary activation of platelets as a potential cause of irreversible aggregation is discussed, as well as possible versions for explaining the results of aggregometry, when reversible platelet aggregation is observed.
Quản trị đại học – Kinh nghiệm quốc tế và bài học cho Việt Nam
Authors: PHAM HAI , Nguyen Giang Thi Huong , Vu Anh Thi Mai , Hoang Quang Ngoc
Published: September 2019

Quản trị giáo dục đại học (GDĐH) đề cập đến sự hợp pháp về quyền quyết định trong các trường đại học giữa các cấu trúc quản trị (governance structures) khác nhau (khoa, hội đồng khoa học và hội đồng trường) và cấu trúc tổ chức (administrative structures) (Các bộ môn, chương trình đào tạo, Hiệu trưởng và các phó hiệu trưởng). Mục đích của quản trị GDĐH là làm rõ các lợi ích chung và nhận ra các mục tiêu của chúng trong khi xác định các giới hạn của thẩm quyền trong lý luận và thực tiễn - ai sẽ quyết định và trọng tâm của quyết định là gì. Sử dụng phương pháp nghiên cứu giáo dục so sánh, bài viết này phân tích vấn đề quản trị đại học của Hoa Kỳ và Israel, từ đó, đề xuất một số khuyến nghị cho quản trị GDĐH Việt Nam đối với bộ chủ quản, vai trò trách nhiệm của Hội đồng trường và hiệu trưởng các cơ GDĐH.
“Keeping Home and Hearth Together”: A Scribe’s Adaptation of Adoption and Inheritance Division Templates from Old Babylonian Nippur Scribal Schools
Authors: Van Wyk Susandra J.
Published: September 2019

In Old Babylonian Nippur, inheritance divisions and adoptions were distinctive and customary agreements. Sometimes the involved parties obtained the services of a scribe to conceptualise the orally agreed arrangements into a recording. A recording was drafted from a template that was learned during a scribe’s scribal school education. Reading the scribal construction through the lens of OB Nippur’s customary and distinct agreements, a case study from the so-called Ur-Pabilsa?a Archive seems to mirror a complex agreement. The scribe ingeniously merged and adapted two templates, an inheritance division and ana aplutim adoption, in one abridged recording. I have proposed that the case study represented a sui generis adoption-inheritance division wherein the adoptive parties reinstated their artificially created family relationship due to their unique arrangements in the redistribution of their initial inheritance awards. Instead of an inheritance division that would have established sole ownership, they agreed that each held a proportionate co-ownership in the awarded properties. For the remainder of their lives, neither one could alienate an award, and either could be the ultimate owner of the adoptive family estate with the demise of the other.
The Flood as Sabbatical Rest: A Comparison of Genesis 6–9 and Leviticus 25
Authors: Spoelstra Joshua Joel
Published: September 2019

Jacob Milgrom once juxtaposed the flood (Gen 6–9) and Babylonian exile (Lev 26), with the Sabbatical Year as its crux. This article expounds upon the parallels between the Flood Narrative (Gen 6–9) and the law concerning the Sabbatical Year (Lev 25:1–7). The directionality of composition between the Priestly source (P) and Holiness Code (H) is examined, as well as the appropriation of alternate source material to bolster the theological propositions of P and H. The confluence of ideas between Gen 6–9 and Lev 25:1–7 (and 26:34–35, 43) include, among other secondary matters: the phenomenon of a yearlong land-fallowing, non-occupancy (or sabbatical rest), divinely granted superabundant bumper-crop which lasts for a year (or two), and concern for the faunae and their peaceful coexistence with humankind on the land where tranquillity is realised by all three entities.
Appropriate Use Criteria for the Integration of Diagnostic and Prognostic Gene Expression Profile Assays into the Management of Cutaneous Malignant Melanoma: An Expert Panel Consensus-Based Modified Delphi Process Assessment
Authors: Berman Brian , Ceilley Roger , Cockerell Clay , Ferris Laura , High Whitney A , Lebwohl Mark , Nestor Mark S , Rosen Theodore , Litchman Graham H , Prado Giselle , Svoboda Ryan M , Rigel Darrell S
Published: September 2019

Background: Despite the clinical availability and widespread usage of diagnostic and prognostic gene expression profiles (GEP) for the management of melanoma, no recommendations for Appropriate Use Criteria (AUC) exist to guide their integration into clinical practice.Objective: To develop a set of consensus-based AUC recommendations for the use of GEP profiling technology in the diagnosis and management of melanoma in specifically-defined situations commonly encountered by the practicing dermatologist.Methods: A systematic Medline literature search was performed to identify all existing evidence pertinent to the clinical efficacy and utility of three melanoma GEP tests that met the inclusion criteria (validated in peer-reviewed literature, US governmentally approved, and currently widely used) for review. A modified Delphi technique was used to achieve consensus and standard SORT criteria were applied. An expert panel of nine dermatologists/dermatologic surgeons/dermatopathologists developed a set of 29 clinical scenarios for the appropriate use of GEP assays and reviewed the available literature to make evidence-based recommendations for each indication.Results: The 2-GEP assay for melanoma diagnosis received 1 B-strength and 6 C-strength recommendations. The 23-GEP diagnostic test received 1 A-strength, 3 B-strength, and 4 C-strength recommendations. The 31-GEP prognostic assay received 1 A-strength, 7 B-strength, and 6 C-strength recommendations.Conclusions: These AUC recommendations provide an evidence-based framework for the integration of melanoma GEP tests into clinical practice.
Crospovidone Induced Vasculopathy of the Skin
Authors: Simmons Brian James , Hoyt Brian S , Linos Konstantinos , Yan Shaofeng , Zug Kathryn A
Published: September 2019

Not Applicable
Long Term Follow Up of Cutaneous Sinus Histiocytosis (Rosai-Dorfman Disease)
Authors: Sequeira Andrew Jose , SEQUEIRA MARIO Jose
Published: September 2019

Rosai-Dorfman disease is a benign histiocytic proliferative disorder of unknown etiology with cutaneous variants clinically presenting with painless cervical lympadenopathy, fever, leukocytosis and other systemic findings.1  Although the skin is the most common extranodal site, rare purely cutaneous forms of the disease exist and diagnosing such case rests solely on histopathologic findings.2  We  report a case with a fifteen year follow up period of this uncommon disorder and describe itsclinical course marked by multiple episodic recurrences.
Pediatric Alopecia Areata in Three Siblings
Authors: Shenoy Adele , Kim Carey , Gottlieb Alice
Published: September 2019

Alopecia areata (AA) is a common non-scarring inflammatory hair loss disorder with an incompletely defined pathogenesis. Prior studies have examined familial expression of AA, but few cases in the literature describe concurrent presentation amongst siblings. Our case demonstrates the complex interplay between genetic and environmental factors in the development of alopecia areata within families.
Storytelling in Dermatology
Authors: Brodell MD Robert Thomas , Brodell David William
Published: September 2019

Anecdotes and stories are widely used in politics where they have been well studied and their value confirmed. A case report highlights the value stories in dermatology and the components of a good story are reviewed.
Is Absorption of Sunscreen Truly a Problem? A Careful Review Suggests it is Not.
Authors: Litchman DO, MS Graham H , Svoboda Ryan M , Rigel Darrell S
Published: September 2019

not available
Ampicillin use in Acne
Authors: Barber Cara , Ashack Kurt , Boulter Joshua , Ashack Richard
Published: September 2019

Introduction: In one author’s experience, ampicillin is an effective alternative antibiotic for acne; however, current literature for ampicillin use in acne is scant. The objective of this study was to demonstrate the response of oral Ampicillin in acne.Methods: A retrospective analysis of 243 patients with Acne vulgaris treated with Ampicillin 500mg twice daily was conducted. The severity of acne (on a scale of 0 to 3) at the last visit was compared with baseline severity determined at the initial visit. Results were analyzed using the paired samples t-test.  Results: The average severity of acne was reduced from 1.54 to 0.90 (p < 0.001). The average severity was reduced from 1.69 to 1.09 (p < 0.001) among men, and from 1.48 to 0.84 (p < 0.001) among woman. Lastly, average severity was decreased from 1.67 to 1.12 (p < 0.001) in patients with nodulocystic acne, from 1.45 to 0.77 (p < 0.001) with inflammatory acne patients, and from 1.00 to 0.38 (p < 0.001) in patients with comedonal acne.  Limitations: This study was limited by its retrospective nature and analysis of a small patient population. Additionally, a validated acne scoring system was not used due to provider documentation. Conclusion: To conclude, Ampicillin had a positive effect on our patient’s acne.
Electrosurgery and Implantable Electronic Devices: A Survey of Current Practices among Cutaneous Surgeons
Authors: Morris Caroline Rose , Hurst Eva A
Published: September 2019

Background: The use of electrosurgery within dermatology is widespread and the number of patients with an implantable electronic device (IED) is ever-increasing. Adverse effects of performing electrosurgery on patients with IEDs could pose a significant patient safety risk. There is a paucity of literature existing detailing guidelines for cutaneous surgeons regarding electrosurgery in IED patients. Objective: To assess current practices and complications of cutaneous surgeons performing electrosurgery in IED patients.Methods: An electronic survey was distributed to members of the American College of Mohs Micrographic Surgery using REDCap. Data was collected between March 2019 and May 2019.Results: The survey was sent to approximately 1700 ACMS members with 178 responses received. The most commonly reported routine precautions included utilization of only short bursts of current, avoidance of electrosurgery around the device, and use of minimal power/lowest effective settings. In total there were nine complications with an estimated 31 patients experiencing electromagnetic interference (EMI) out of over 250,000 procedures. Complications were more commonly seen in patients with a cardioverter-defibrillator than any other device (RR:4.74, CI:1.29-17.4). The use of true heat cautery and bipolar (two-tip electrode) were associated with the lowest rate of EMI. Whereas, electrocoagulation, electrosection, and monopolar (single-tip electrode) were more likely to cause EMI (RR:3.62, 95% CI:1.82-7.19).Conclusions: Significant EMI to IEDs during routine cutaneous electrosurgery procedures is rare, however, there is a clear lack of recommendations. The use of bipolar forceps and electrocautery may be safer when electrosurgery is required. Further investigation is required to develop guidelines for electrosurgery in IED patients.
Analysis of Self-Reported Data Accuracy Among Board-Certified and Trainee Dermatologists in the CMS National Provider Identifier Registry
Authors: Yanovsky Rebecca L , Smith Gideon P
Published: September 2019

not available
New-Onset Vitiligo Following Etanercept for Ankylosing Spondylitis
Authors: Dunn Carly , McMurray Stacy L. , Jones Allison , Pattanaik Debendra
Published: September 2019

Tumor Necrosis Factor-alpha (TNF-a) inhibitors, are used widely to treat a variety of chronic inflammatory conditions such as ankylosing spondylitis, Crohn’s disease, rheumatoid arthritis, and psoriasis. Recently, there has been an increase in the number of reports of immune-mediated skin diseases, such as lichen planus, psoriasis, granuloma annulare, following the initiation of TNF-a inhibitors. We present a patient with ankylosing spondylitis previously treated with adalimumab who developed vitiligo shortly after switching to etanercept to achieve better control of his joint disease.
61-Year-Old White Female with a Non-Healing Ulcerated Ankle Mass
Authors: Lowther Christopher , Fiddler Troy , Whitcroft Ian A , Sapp Juanita , Marks Etan , Cockerell Clay
Published: September 2019

Merkel cell carcinoma is a  rare cutaneous carcinoma from the tactile Merkel cells. With fewer than half the patients surviving more than one year and fewer than 20% surviving beyond five years. These tumors are rarely suspected until the biopsy results return. Polyoma virus is associated with up to 80% of the tumors. 53% present on the head and neck and 35% present on the extremities while larger lesions are exceedingly rare in either location. Recently, A newly approved drug, Avelumab, has shown tumor response in patients with some patients experiencing complete remission.
Complete metabolic response with letrozole and palbociclib in advanced breast cancer
Authors: Dhanushkodi Manikandan , Ananthi Balasubramanian , Iyer Priya
Published: September 2019

We report a patient with hormone positive, HER2 negative advanced breast cancer with extensive metastasis who achieved complete metabolic remission with letrozole and palbociclib
Correlation of Biomarkers and Frozen Section Diagnosis with Paraffin Histopathological Diagnosis in Suspected Ovarian Cancer
Authors: Mukherjee Tanushri , Mukherjee Soma , Sanyal Parikshit , Bharadwaj Vikram , Sampath S , Gunjan
Published: September 2019

Introduction:

Ovarian cancers pose diagnostic dilemma and is problematic for decision making for the gynecological oncologist as well as the pathologist. The use of intra-operative frozen section can aid significantly in decision making and assist in choosing the correct operative path once a mass lesion of ovaries is discovered.

Materials and Methods:

Over a two-year period, 50 cases of Suspected Ovarian cancers were examined by intra- operative frozen section as well as followed up with histopathology in paraffin sections. Results were categorized in two strata—benign and malignant.

Results:

A comparison between frozen-section diagnosis and findings on paraffin section showed that the sensitivity of frozen section in diagnosis of malignant lesions is 97.14%, with specificity 93.33%, positive predictive value 97.14% and negative predictive value 93.33%. Among 50 cases, one case was reported as false positive and one was reported as false negative.

Conclusion:

Intra-operative frozen section is a highly sensitive and specific modality for the diagnosis of malignant lesions of the ovary.
Development a Conceptual Framework for Industrial and Hazardous Wastes Rating Systems
Authors: Pourahmadi Amirali , Ebadi Taghi , Nikazar Manouchehr
Published: September 2019

Production of a large volume of industrial and hazardous waste with various compositions makes the need for comprehensive management and consequently the concept of waste rating more tangible. Despite numerous waste rating systems presented so far, analyzing the makeup of such systems play a significant role in meeting human health. In this study, the structure of 34 rating systems of industrial and hazardous waste have been analyzed based on both quantitative and qualitative standpoints and the results are presented as a formational-conceptual framework. Results showed that every rating system is formed of two parts of formational fundamentals and functional indices, which the first part has a longitudinal relation with the second. While lowly considered, this study is focusing on the formational fundamental part in the rating systems of industrial and hazardous waste, as intellectual prerequisites in suggesting a new system. Some of the factors in the first level are: dependence of the organization which determines the policy and general goals of a rating system, time of presenting the method during which remarkable changes take place in computing methods of the rating systems, infrastructures and facilities which are efficient in the accuracy and scope of the system and finally references and standards causing variations in definitions and final results of the rating system. Furthermore, factors such as: aspects of the study and style of use are identified in second level of formational fundamentals. Finally, the fundamentals are presented in a formational-conceptual framework for better perceiving and more effective use.
The Risk Assessment of Dam Construction Projects Using Fuzzy TOPSIS (Case Study: Alavian Earth Dam)
Authors: Shaffiee Haghshenas Sina , Lashteh Neshaei Mir Ahmad , Pourkazem Pouyan , Shaffiee Haghshenas Sami
Published: September 2019

One of the appropriate tools for conducting a successful project is the risk management during the implementation of the project. Dam construction projects are complex projects with high impact factors such as variable and uncertain conditions. To identify the risks of project, experts' experiences and comments including mind storm and consultation sessions were used. Risk analysis is a complex issue. Therefore, in this paper, the fuzzy multiple criteria decision making (FMCDM) technique was used to rank the risk which is a powerful and effective tool in solving complex problems under uncertain and implicit conditions. Due to the uncertainty in the language, fuzzy data were used for the quantitative analysis of the probability and severity of effects and the repetition of risks taken into account. The present research was conducted on Alavian dam in the northeast of Iran. Due to the result of the study, design mistakes' risk (R4) has the highest level of risk and earthquake, etc. has the lowest level of risk in Alavian dam project.
Modelling of Crack Propagation in Layered Structures Using Extended Finite Element Method
Authors: Nasaj Moghaddam Hesamoddin , Keyhani Ali , Aghayan Iman
Published: September 2019

Crack propagation in structures is an important issue which is engineers and designers should consider. Modeling crack propagation in structures and study the behavior of this phenomenon can give a better insight to engineers and designers for selecting the construction’s materials. Extended finite element method (XFEM) was used successfully in the past few years for simulating crack initiation and propagation in sophisticated and complex geometries in elastic fracture mechanics. In this paper, crack propagation in three-point bending beam including initial crack was modeled based on ABAQUS software. The following consequences were attained through the study of simulation data. First, the effects of young’s modulus and fracture energy on force-displacement curve at three-point bending beam were investigated. It was observed that, by increasing the value of young’s modulus and fracture energy, three-point bending beam was showed more load carrying against initiation. Second, in multi-layer beam, the effect of young’s modulus on force-displacement curve was investigated. In case I (the thin upper layer is harder than the substrate) the value of young’s modulus in substrate was kept constant and the amount of young’s modulus in thin layer was risen in each step rather than the substrate, the peak in force-displacement curve was ascended and three-point bending beam resisted better against crack initiation. Next, similar conditions was considered in case II (the thin upper layer is softer than the substrate), by decreasing the value of young’ modulus in top layer, peak in force-displacement curve was declined and crack initiation was happened in lower loading in each step. Finally, sensitivity analysis for thickness of top layer was conducted and the impact of this parameter was studied.
Study of Energy Dissipation of Pooled Stepped Spillways
Authors: Morovati Khosro , Eghbalzadeh Afshin , Soori Saba
Published: September 2019

Water transferring to the dam downstream creates high levels of kinetic energy. Stepped spillways are amongst the most effective spillways in reducing the kinetic energy of the flow moving towards the downstream. The geometry of the steps in stepped spillways can affect the reduction of kinetic energy of the flow transferring to the downstream. Therefore, in this study the effect of different number of steps and discharge on flow pattern especially energy dissipation were investigated. The VOF method was used to simulate the flow surface and the k-ε (RNG) turbulence model was used for flow turbulence simulation. Comparing the results obtained from the numerical simulation with the experimental data indicated an acceptable level of consistency. Comparing the obtained results showed that decreasing the number of the steps of pooled stepped spillways reduced flow velocity and increased the relative energy dissipation at the end of the spillway. Decreasing the number of steps increased the turbulent kinetic energy value. Also, the maximum turbulent kinetic energy was obtained near the step’s pool. Moreover the results indicated that the value of turbulent kinetic energy increased along the spillway.
Finite Element Analysis of Load Bearing Capacity of a Reinforced Concrete Frame Subjected to Cyclic Loading
Authors: Bamdad Mahdi , Sarvghad Moghadam Abdolreza , Mehrani Mohammad Javad
Published: September 2019

Many methods have been developed in order to study the impact behavior of solids and structures. Two common methods are finite element and experimental method. The nonlinear finite element method is one the most effective methods of predicting the behavior of RC beams from zero-load to failure and its fracture, yield and ultimate strengths. The advantage of this method is its ability to make this prediction for all sections of the assessed RC beam and all stages of loading. This paper compares the experimental results obtained for a RC frame with the numerical results calculated by ABAQUS software, and plots both sets of results as hysteresis–displacement diagrams. This comparison shows that the numerical FEM implemented via ABAQUS software produce valid and reliable results for load bearing capacity of RC frames subjected to cyclic loads, and therefore has significant cost and time efficiency advantages over the alternative approach
Building Exoskeletons for the Integrated Retrofit of Social Housing
Authors: Scuderi Giuliana
Published: September 2019

In Europe, most of the social housing heritage, built before the 1980s, suffers of architectural and functional obsolescence and seismic vulnerability, raising questions about the future of the cities and their inhabitants. In an era of environmental emergency and lack of resources demolition and reconstruction is not a sustainable alternative. A multi-purpose campaign of architectural, functional and structural retrofit is fundamental but the complex information and requirements to handle require integrated and innovative solutions. The bio-mimicry design approach led to the definition of the “building exoskeleton”: an external steel frame, two or three-dimensional, encapsulating the existing building and provided of shape memory alloys-based devices for passive seismic dissipation. The simplicity of the structure gives high flexibility in the definition of the new architectural features and functional performances, adapting to the changing necessities on both space and time scales. The energy performances result also radically improved. The efficiency of this scheme to improve the seismic response of the constructions is verified for a real case study – a concrete frame with brick infill – through static and dynamic nonlinear analyses with the software SAP2000. Finally, the economic and technical feasibility of the proposal is discussed together with the implications of the project and the possible developments.
Application of Hyperstatic Reaction Method for Designing of Tunnel Permanent Lining, Part I: 2D Numerical Modelling
Authors: Hassani Rahim , Basirat Rouhollah
Published: September 2019

The increase of bored tunnels in the entire world has raised the question how to design the tunnel structure in an efficient way. This paper proposes a numerical approach to the Hyperstatic Reaction Method (HRM) for analysing permanent tunnel linings. The permanent tunnel lining is known as main structure of tunnel maintenance during the time. The HRM is one of the analysis methods for tunnel lining in long term. In this paper, two dimensional numerical modelling is performed by considering hyperstatic reaction concepts. Loading is done after the calculation of long term loads, and ground reaction is simulated by springs. Designing is done for Manjil-Rudabar freeway project, Tunnel No. 2. The numerical analyses were performed for Operational Design Earthquake (ODE) and Maximum Design Earthquake (MDE) loading conditions. A new simplified approach is used for considering the effect of earthquake loading on the tunnel lining. Then, an interaction diagram between axial force and bending moment used for investigating the capacity of tunnel lining. The thickness of tunnel lining and armature are calculated for three sections based on induced forces in tunnel lining. These forces were different in every section according to the load combinations, rock mechanics properties, lining properties, and overburden.  The numerical results showed that the forces in tunnel lining for MDE condition is approximately 50% more than ODE condition in earthquake loading. This numerical processing presented that the HRM is a proper, fast, and practical method for designing and analysing the tunnel lining.
Evaluation of Building Displacement Induced By EPB Tunneling Through GPS-GNSS Monitoring System and Back Analysis Technique (Tabriz Subway Twin Tunnels)
Authors: Davarpanah Seyed Morteza , Sharifzadeh Mostafa , Sattarvand Javad , Narimani Samad
Published: September 2019

One of the main aspects of tunneling in urban areas is controlling the amount of settlement that might cause some damage to the structures and infrastructures. In this paper, the novel displacement monitoring system called Global Positioning System - Global Navigation Satellite System (GPS-GNSS) has been applied to monitor the building displacement .One of the most important features of this approach is that this system provides three dimensional displacement behavior of the building. Besides, in order to fulfill the purpose of accuracy, the amount of settlement induced by Earth Pressure Balance (EPB) tunneling was calculated by numerical, empirical and analytical methods. In order to achieve this purpose, the back analysis technique was considered. The order in which the geotechnical parameters are optimized depends on the amount of sensitivity function. That is, the parameter of high sensitivity function is optimized first. According to the calculations, the sensitivity analysis results show that the maximum amount of sensitivity function with the volume loss of more than 1% in respect to the internal friction angle is about 0.5, which is greater than other geotechnical properties. According to the results of back analysis technique, the optimized geotechnical properties were elastic modulus (), internal friction angle () and cohesion () found on the volume loss of 1.5% with less than 0.02% error. The maximum settlement of the building at the studied area, explored by the optimized numerical method, is about 4 mm, which is in the range of monitored data (3mm-13mm) obtained through GPS-GNSS procedure.
The Necessity of Management Team Formation and Its Effect on Civil Engineering Projects Success
Authors: Bahadori Kosanji Zare Mehdi , Mirjalili Alireza , Mirabi Mohammad
Published: September 2019

Success of a project is one of the greatest and most important goals and concerns of mangers and all people involved in a project. The purpose of state civil engineering projects success is to decrease cost and time as well as increasing the quality and satisfaction of society and government as the main customers. Many factors influence civil engineering projects success and identifying them highly help the successful implementation of civil engineering projects. As one of the most important factor, it can be referred to project management team. The main purpose of the present study is to find the effective relation between management team formation and civil engineering projects success. To this end, library and field methods have been used. To gather required data, a 15-item questionnaire has been employed and distributed among 30 managers of successful state projects, including employer, consultant and contractor. The obtained data has been analyzed using descriptive method. As the findings revealed, weakness of managerial factors avoids complete success of state civil engineering projects implementation. The study also has concluded that team formation is highly important to organize project; management team enabling is regarded necessary for organizational projects success, and work relation of team members plays an important role in project management success.
Investigation of Nonlinear Behavior of Concrete on Seismic Performance of an Arch Dam Using Finite Element Method
Authors: Ghorbani Mortaza Ali , Pasbani Khiavi Majid , Ahmadi Parya
Published: September 2019

In this paper the effect of nonlinear behaviour of concrete is investigated on seismic performance of a double curvature concrete dam. The Morrow Point concrete dam has been selected as the case study and dam-reservoir-foundation interaction considered in the model. Finite element method has been used for modelling and analysis of case study by applying the El Centro earthquake components considering nonlinear behaviour of concrete. The obtained results of nonlinear dynamic analysis illustrate the increasing of displacement of dam crest along the river and decreasing of maximum principle stresses in critical points. The results demonstrate the importance of consideration of nonlinear behaviour of material in seismic performance of arch dams to achieve the optimal design of models.
A Circular Framework for Evaluating Highway Construction Projects Success: AHP Approach
Authors: Akal Ahmed Yousry , Abu El-Maaty Ahmed Ebrahim , El-Hamrawy Saad Abdel-Karim
Published: September 2019

Success has always been the ultimate goal of every activity, and a construction project is no exception. There are few topics in the field of project management that are so frequently discussed and yet so rarely agreed upon as that the notion of project success criteria. Usually much of the national budget on infrastructure development is channelled to highway construction projects. However, no official studies have been presented before to evaluate the performance this industry in Egypt. Consequently, this reflects the importance of this study which aims at laying out a standard framework which identifies the criteria for measuring projects success. The identified criteria, in turn, can be used as a tool to help the stakeholders of the highway projects in Egypt in judging the project performance and success during the project's post-construction phase. Using a detailed literature review thirteen success measures are identified (four objectives and nine subjective). Furthermore, the analytic hierarchy process (AHP) is adopted to prioritize the identified measures based on accumulative knowledge of academic experts in highways construction industry through the application of questionnaire survey. The study establishes that project completed on time, project completed within budget, health, safety and number of accidents, profitability and quality in construction are the most significant measures used for assessing the highway projects performance and success.
A Numerical Investigation of Segmental Lining Joints Interactions in Tunnels-Qomrud Water Conveyance Tunnel
Authors: Ahmadi Mohammad Hossein , Mortazavi Ali , Davarpanah Seyed Morteza , Zarei Hamid
Published: September 2019

A comprehensive analysis of segmental lining joints can assist to guarantee a safe construction during tunnelling and serviceably stages.  This paper has thoroughly investigated the interaction mechanism of precast concrete lining joints in tunnels. The Universal Distinct Element Code (UDEC), a two-dimensional numerical program based on the distinct element method (DEM) for discontinuum modelling, was implemented to simulated a typical segmental lining model consisting of six segment rings. In the analyses, the typical segmental lining design parameters of Qomrud water conveyance tunnel, aimed to transfer 100 million cu. m. water from the origins of Dez River to central Iranian desert, were employed to fulfil the purpose of the research.  In the conducted analyses, the worst-case scenario of the loading faced during the boring of Qomrud tunnel was considered. This was highly associated with the existence of the crushed zone dipping at 75 degree at the location of the key segment.  The worst scenario based on the condition that concerns the crushed zone intersect segmental lining at the location of key segment has been taken into consideration. In this study, the load acting on the joints of the segments includes the gravity load from the tunnel overburden and the crushed zone stratum force that intersects tunnel with 75 slopes at the location of the key segment, the gravity force of the segments and the earth pressure. The numerical investigation has been used for the different coefficients of stress concentration of 0.5, 1, 1.5, 2 and also different geological conditions of the saturated crushed zone under critical scenario.
Shear Strength Behavior of Crude Oil Contaminated Sand-Concrete Interface
Authors: Mohammadi Amir Hossein , Ebadi Taghi , Ahmadi Mehrdad , Aliasghar Arash
Published: September 2019

A laboratory investigation into crude oil contaminated sand-concrete interface behavior is performed. The interface tests were carried out through a direct shear apparatus. Pure sand and sand-bentonite mixture with different crude oil contents and three concrete surfaces of different textures (smooth, semi-rough, and rough) were examined. The experimental results showed that the concrete surface texture is an effective factor in soil-concrete interface shear strength. The interface shear strength of the rough concrete surface was found higher than smooth and semi-rough concrete surfaces. In addition to the texture, the normal stress and the crude oil content also play important roles in interface shear strength. Moreover, the friction angle decreases with increasing crude oil content due to increase of oil concentration in soil and it increases with increasing interface roughness.
Investigating the Local Buckling of Rectangular Corrugated Plates
Authors: Abdolvahab Vahid
Published: September 2019

With advances in technology in recent years, the use of orthotropic materials to exclude the mechanical deficiencies of homogeneous plates has increased. Sinusoidal corrugated plates are known as orthotropic plates, as a result of changes in their mechanical properties in two orthogonal directions. Since use of corrugated plates, in particular steel shear walls instead of flat steel plates, has increased, the present study investigated local buckling of sinusoidal corrugated plates under uniform uniaxial loading on the transverse edges of the plate (vertical loading on the sinusoidal wave of corrugated plates), using the Galerkin method. This method is very powerful with regard to solving differential equations, and directly uses these equations in the process of problem-solving. Finally, the results obtained for the critical buckling load of sinusoidal corrugated metal plates and the results relating to the metal homogeneous flat plates were compared using the same supporting conditions and loading.
Flow Simulation and Energy Loss Estimation in the Nappe Flow Regime of Stepped Spillways with Inclined Steps and End Sill: A Numerical Approach
Authors: Hamedi Amirmasoud , Hajigholizadeh Mohammad , Mansoori Abbas
Published: September 2019

Recently, the usage of stepped spillways, as energy dissipaters, has increased and led to a reduction in the size of the stilling basin. Extensive experimental considerations, plus the high cost and extended time required for laboratory methods, are among the major issues that require precise attention to determine optimal step design. This research deals with comparing the 2-D numerical simulation and experimental description in stepped spillways equipped with inclined steps and end sill together and presents a brisk, reliable, low-cost, and non-experimental approach to designing the steps. In this new type and complicated geometry, simulation is more complicated than horizontal steps, because it needs more accuracy around the end sills. The VOF Method and the k-ε standard turbulence model are proposed to simulate the flow pattern and evaluate the energy loss over stepped spillway. Energy dissipations obtained through the numerical approach have been compared with laboratory measurements and demonstrate reasonable agreement. Also, the flow pattern, velocity vectors and flow direction resulted from numerical simulation is in a good agreement with the experimental results.