bluuebunny/crossref_metadata_2025 huggingface dataset:
Penerapan Corporate Governance Perguruan Tinggi Islam
Authors: Subhan Moh.
Published: March 2019

The concept of good governance can be interpreted as a reference for the process and structure of good political and socio-economic relations. Human interest is the strongest factor that currently affects both the bad and the achievement of a country and good governance. PTAIN in the future will be faced with a reality of intense competition. Competition does not only come from within the country but also from abroad. At times like that, if a PTAIN wants to remain in existence and be taken into account, in addition to carrying out strategic steps as mentioned above it must also be able to perform excel in accordance with the times among other universities.
“My First Year in The University”: Students’ Expectations, Perceptions and Experiences
Authors: Lee Kam-Fong , Ang Chin-Siang , Dipolog-Ubanan Genevieve
Published: March 2019

This study aimed to explore students’ first year experience to provide insights that may prove to be useful for institutional policy and practice. A semi-structured interview was conducted on 30 undergraduates from a private university to examine their perceptions, experiences, and attitudes towards first year experience. Themes were derived from the analysis of the transcribed interview transcripts. The results showed that in general students pursue tertiary education as it can guarantee their career prospect and intellectual development. Moreover, classroom engagement and academic staff engagement on students were less crucial in comparison to peer engagement. However, the students’ perceptions of studentship and quality of teaching were positive. Lastly, most students were satisfied with their first year experience in the university. Practical implications, recommendations and limitations for future practice are put forth
The role of thoracoscopic pneumonectomy in surgical treatment of lung diseases
Authors: Porkhanov V. A. , Danilov V. V. , Kononenko V. B. , Naryzhnyi N. V. , Kovalenko A. L. , Shtraub V. V. , Zhikharev V. A.
Published: March 2019

The objective was to estimate the immediate results of thoracoscopic pneumonectomies in various surgical lung diseases.

Material and methods. Patients were divided into groups depending on the surgical access: thoracoscopy – group 1 (15 patients), thoracotomy – group 2 (30 patients). We performed 12 left-sided (80 %) and 3 right-sided (20 %) operations in group 1. We performed 23 left-sided (76.7 %) and 7 right-sided (23.3 %) operations in group 2.

Results. The average duration of the operation in group 1 was (161±27) min (from 120 to 230 min), in group 2 – (128±34) min (from 75 to 180 min). The number of removed lymph nodes during lymphadenectomy in group 1 was (19±10) nodes (from 6 to 40), in group 2 – (18±9) nodes (from 6 to 38). The severity of the pain syndrome after surgery on the Visual Analogue Scale for Pain in group 1 was 2.4±0.3, in group 2 – (4.4±0.3) (p=0.04), duration of ICU stay in group 1 was (2.0±0.7) days (from 1.0 to 3.0), in group 2 – (4.1±1.2) days (3.0 to 6.0). There were no mortality in both groups.

Conclusion. In carefully selected patients, thoracoscopy access during pneumonectomy demonstrates better immediate results comparing to thoracotomy (less pain syndrome, shorter duration of treatment in the ICU, hospital) with the same duration of operation and volume of lymph dissection.
Thoracoabdominal stab wounds: modern surgical tactics
Authors: Kotiv B. N. , Samokhvalov I. M. , Markevich V. Ju. , Dzidzava I. I. , Barinov O. V. , Suvorov V. V. , Goncharov A. V. , Petukhov K. V.
Published: March 2019

Theobjectivewas to determine the optimal therapeutic and diagnostic algorithm for thoracoabdominal injury.

Material and methods. The results of the examination and treatment of 389 injured patients with combined stab wounds of chest and abdomen were analyzed. The injuries were thoracoabdominal in 54 (13.9 %) cases.

Results. We analyzed instrumental invasive and non-invasive diagnostic methods. The sequence of surgical interventions was determined.

Conclusion. We revealed that the correct sequence and volume of surgical intervention ensured the success of treating the injured patients, while in cases of competing sources of bleeding, priority should be given in favor of performing thoracotomy.
Functional results of surgical reconstruction of the anterior cruciate ligament of the knee joint in combination with lateral stabilization
Authors: Zayats V. V. , Dulaev A. K. , Zagorodnii N. V. , Dydykin A. V. , Ulianchenko I. N.
Published: March 2019

Theobjectivewas to compare the effectiveness of isolated anatomical antegrade reconstruction of the anterior cruciate ligament (ACL) with bonetendon-bone autograft (BTB autograft) and in combination with lateral extra-articular tenodesis (LEAT) graft from the iliotibial tract (ITT).

Material and methods. We analyzed 187 arthroscopic ACL reconstructions in patients with a Pivot shift test – 3+ degree. We performed an isolated ACL-R in 118 (63.1 %) patients in group 1 and added the LEAT from ITB to it in group 2.

Results. According to IKDC-2000: 176 (94.1 %) patients were included in categories A and B, 11 (5.9 %) – in C. Significant differences in these groups appeared 15 months after the operation. According to KOSS: in group 2, the anterior and rotational knee stability, as well as the level of sports activity were higher, and pathological symptoms were less common.

Conclusion. LEAT from ITB increases stability and functionality of the knee joint in patients with anatomical antegrade ACL reconstructions with BTB-autograft for terms over 15 months after the operation, and is an economically procedure.
FREQUÊNCIA E SEVERIDADE DE DESFOLHAÇÃO EM ECÓTIPOS DE Brachiaria brizantha SOB LOTAÇÃO INTERMITENTE
Authors: Fernandes Patrick Bezerra , Barbosa Rodrigo Amorim
Published: March 2019

O entendimento da dinâmica da desfolhação é essencial na análise da resposta da vegetação e da resposta animal em diferentes sistemas de produção e deve ser parte fundamental nos estudos sobre o manejo do pastejo. Desta forma, objetivou-se avaliar o padrão de desfolhação em pastos de Brachiaria brizantha, com estruturas distintas, sob lotação intermitente. O experimento foi conduzido na área experimental pertencente à Empresa Brasileira de Pesquisa Agropecuária – Gado de Corte, Campo Grande – MS. Os tratamentos foram pastos de Brachiaria brizantha ecótipo B4, BRS Paiaguás e cv. Xaraés. O período experimental foi dividido em épocas do ano (águas e secas). As avaliações da frequência e severidade de desfolhação de perfilhos individuais foram realizadas antes da entrada dos animais nos piquetes e durante todo o período de rebaixamento. Não foi verificado efeito da época do ano na frequência de severidade desfolhação lâmina foliar e perfilho estendido. Na época seca, ocorreu aumento na severidade de desfolhação por categoria de folha. A desfolhação de perfilhos individuais acompanhou o ajuste na densidade de lotação, apresentando poucas variações entre os pastos estudados. À medida que avançava o período de ocupação, o animal explorava os extratos inferiores do dossel forrageiro em proporções diferentes. As variações nas características estruturais do dossel forrageiro implicaram em poucas diferenças na dinâmica de desfolhação nos pastos de B. brizantha. O ajuste na densidade de lotação apresentou pouca influência na remoção de lâminas foliares entre os pastos de B. brizantha. À medida que avança a idade das lâminas foliares, reduz a desfolhação.
QUARK CHEESE PRODUCED WITH KEFIR AND AGAVE INULIN
Authors: Silva Pedro Henrick Teles da , Rigoto Renata Patrícia , Sottoriva Heloysa Maria , Cintra Fernanda Fregato , Trento Júlia Postal , Castro Aletéia Leal de , Alves Gilberto
Published: March 2019

Quark cheese is a cheese of fresh mass obtained by coagulation of the milk by the action mainly of lactic bacteria obtaining a cheese of refreshing flavor with high acidity, in its commercial production a specific starter culture is used, in the present work this culture was replaced by kefir, a symbiotic system of lactic acid bacteria and yeasts, which is considered a probiotic product. Agave inulin is a soluble fiber considered prebiotic with ability to improve the balance of the intestinal flora. The objective of this work was to develop Quark cheese using kefir as a starter culture and supplemented with agave inulin. Cheeses were produced by fermentation for 24h / 25ºC followed by drainage of the whey, in the supplemented cheese 3% of inulin was added, after whey drainage cheeses were kept in plastic pots under refrigeration temperature until the moment of the analyses. Microbiological evaluations, pH and acidity were performed at 1, 7 and 14 days after manufacture. The results of the physical-chemical analyses remained close to those found in the literature. Cheeses showed high counts of Lactobacilli indicating their probiotic potential, the addition of agave inulin decreased the number of these microorganisms, nevertheless they remained in high counts. It can be verified that the use of kefir in the production of Quark cheese is feasible, mainly in artisanal productions because it is usually inexpensive and easy to maintain, Lactobacilli have remained stable during the storage period.
RESISTÊNCIA DO Staphylococcus aureus À ANTIMICROBIANOS: DA SUINOCULTURA À SAÚDE PÚBLICA
Authors: Silva Késsila Rodrigues da , Savoldi Flavia Karollyne , Melo Jaqueline Bruna de , Ogawa Roberta , Silva Gustavo Ratti da , Livero Francislaine Aparecida dos Reis
Published: March 2019

No cenário agroindustrial brasileiro a cadeia suinícola vem se destacando cada vez mais. A inserção no mercado internacional e as novas tecnologias aplicadas na prática de produção de suínos tem grande importância na economia do país. No entanto, algumas bactérias oportunistas estão presentes nas regiões nasais de suínos, sendo responsáveis por diversas alterações clínicas na suinocultura. Um dos principais patógenos que acomete esta espécie é o Staphylococcus aureus, responsável também por infeções nos seres humanos. O S. aureus possui características de virulência e resistência a diversos antibióticos, em especial à oxacilina, um antibiótico pertencente ao grupo β-lactâmicos com ampla escala de utilização. A resistência do S. aureus a oxacilina está interligada a vários fatores, como a presença do gene mecA, que codifica a produção de uma proteína ligante e assim diminui a afinidade e a sensibilidade à ação de compostos antimicrobianos β-lactâmicos. O uso errôneo de antibióticos é um dos fatores responsáveis por cepas resistentes e, a adição de melhoradores de desempenho nas rações de suínos, com a adição de antibióticos de forma preventiva pode favorecer e aumentar a existência de cepas multirresistentes, agravando ainda mais os dados já obtidos em pesquisas. A seleção destes genes resistentes causa preocupação à saúde coletiva, uma vez que indivíduos que tiveram contato com suínos e moradores residentes próximos as granjas apresentam cepas resistentes de S. aureus. Assim, a utilização de antibióticos de forma correta é fundamental para a redução dos índices de resistências à antibióticos.
PREVALÊNCIA DE BRUCELOSE BOVINA NA REGIÃO NOROESTE DO ESTADO DO PARANÁ DE 2014 Á 2016
Authors: Magalhães Ricardo , Rosa Gilnéia Da , Tieppo Jady Slaviero , Basso Lahis Cristina , Ames Maria Leticia da Silveira , Merlini Luiz Sérgio
Published: March 2019

Dentre as zoonoses responsáveis pelas maiores perdas socioeconômicas na bovinocultura brasileira, a brucelose possui significativo destaque, sendo considerada uma antropozoonose causada pelas bactérias do gênero Brucella spp. Essas bactérias possuem potencial para infectar diversos mamíferos, inclusive, existem registros de brucelose em cetáceos (baleias e golfinhos). Nos bovinos, as principais maneiras de transmissão se dão pelas descargas bacterianas presentes nos restos de materiais provenientes de abortos de vacas positivas para brucelose, mas também pode ser transmitida pelo leite, cópula, fômites, solo e até a água. As vacas continuam liberando as bactérias por cerca de 30 dias após o parto ou aborto. Para diagnóstico são utilizados testes diretos ou indiretos preconizados pelo Programa Nacional de Controle e Erradicação da Brucelose e da Tuberculose Animal (PNCEBT). O objetivo deste trabalho foi avaliar o perfil epidemiológico de Brucelose bovina na região noroeste do estado do Paraná de 2014 a 2016. Entre os anos de 2014 a 2016, foram utilizados dados de exames realizados por Médico Veterinário devidamente registrado e habilitado para a realização do diagnóstico. Entre bovinos machos e fêmeas foram testados 12.640 animais, na região noroeste do estado Paraná, sendo o teste utilizado o do antígeno acidificado tamponado (AAT). 26 animais foram positivos para brucelose perfazendo um percentual de 0,2 % do rebanho analisado. Apesar dos baixos índices de animais infectados pela Brucella spp. apresentados nessa pesquisa o controle e uma possível erradicação da brucelose se tornam indispensáveis devido a fácil transmissão e as perdas econômicas provocadas principalmente pelos abortos ocorridos nos últimos trimestres das gestações.
Determination of Dissociation Constants of Malonic Acid in (Ethylene Glycol-Water)X% Mixed Solvent at Different Temperatures Using Electromotive Force Measurements
Authors: Ahmed Soleen S. , Jamil Lazgin A.
Published: March 2019

The first and second dissociation constants of malonic acid in different composition of (ethylene glycol-water)%, (10, 20 and 30)% mixed solvent determined using the electromotive force measurements of galvanic cells without liquid junction at nine different temperatures,  at  interval, including the body temperature. The value of the first and second thermodynamic dissociation constants have been used to determine the thermodynamic quantities of two dissociation processes. These quantities involved the standard free energy,  standard enthalpy change,  standard entropy change,  and standard heat capacity change.
Postpartum dönemde annelerin taburculuk öncesi yenidoğan bakımına ilişkin bilgi düzeyleri, gereksinimleri ve ilişkili faktörler
Authors: Yıldız Hatice , Boyacı Bahar
Published: March 2019

Amaç: Bu araştırma,
postpartum dönemdeki annelerin taburculuk öncesi yenidoğan bebeğin bakımına
ilişkin bilgi düzeylerini, gereksinimlerini ve ilişkili faktörleri belirlemek
amacıyla tanımlayıcı olarak yapıldı. Yöntem: Araştırmanın örneklemini 1
Nisan- 1 Ağustos 2017 tarihlerinde araştırmaya katılmayı kabul eden postpartum
dönemdeki 288 oluşturdu. Araştırma verileri literatürden faydalanılarak
hazırlanan “Postpartum Dönemde Annelerin Taburculuk Öncesi Yenidoğan Bakımına
İlişkin Bilgi Düzeyleri ve Gereksinimleri Anket Formu” kullanılarak toplandı.
Veriler yüzdelik oranları ve hesaplanan ortalama bilgi puanı üzerinden sunuldu.
Verilerin değerlendirilmesinde yüzdelik, ortalama, t-testi, Oneway Anova ve
regresyon analizi kullanıldı. Bulgular: Katılımcıların yaş ortalaması
28.2± 6.4, %52.4’ü ilköğretim mezunu, %79.2’si ev hanımı, %39.6’sı primipardır.
Annelerin %76.0’sı bir sağlık kuruluşunda takip edilmiş, %21.9’u yenidoğan
bakımı konusunda bir sağlık kuruluşundan eğitim aldı. Katılımcıların %10.8’i
yenidoğan bakımında güçlük yaşayacağını düşünmektedir. Taburculuk öncesinde
annelerin %20’sinin emzirme, %6’sının banyo yaptırma ve %5’inin kolik ağrısıyla
baş etme konusunda bilgi almak istedikleri belirlendi. Katılımcıların bebek
bakım bilgi puanları ortalaması 71.7± 1.8 (min:0- maks:100) olarak bulundu.
Annelerin bilgi puanı ortalaması en yüksek bebekte tehlike işaretleri konusunda
iken en düşük ortalamanın bebek beslenmesi konusunda olduğu belirlendi.
Yenidoğan bakım bilgisi toplam puan üzerinde annenin kaçıncı çocuğa sahip
olduğu ve eğitim düzeyinin etkili olduğu (p<0.05) belirlendi. Sonuç: Bu
araştırmada postpartum dönemdeki annelerin yenidoğan bakımı konusundaki bilgi
düzeyleri yeterli bulundu. Katılımcıların eğitim düzeyi ve sahip oldukları
çocuk sayısının bilgi düzeylerini etkilediği belirlendi. Annelerin en çok bilgi
alma ihtiyacı duyduğu konunun yenidoğan beslenmesi olduğu sonucuna ulaşıldı.
Aril(alkil)azol türevlerinin sentezi ve biyolojik aktiviteleri
Authors: DURMUŞ Mefkure , BARUT Burak , ÖZEL Arzu , SELLİTEPE Erdinç , DOĞAN İnci Selin
Published: March 2019

Aril(alkil)azol
grubu bileşikler antifungal, antikonvülsan, antibakteriyel aktivitelere
sahiptir. Hem oksijenaz enzim inhibisyonu, indolamin 2,3-dioksigenaz-1 enzim
inhibisyonu, asetilkolinesteraz (AChE) ve bütirilkolinesteraz (BChE) enzim
inhibisyonu aktivitelerinin değerlendirildiği çalışmalar da mevcuttur. Bu
çalışmada, aril (alkil) azol yapısında, 2(1H-1,2,4-triazol-1-il)-1-(2,4-diklorofenil)
etanol bileşiği ve bu bileşikten hareketle üç adet yeni aromatik yan zincir
içeren ester türevleri sentezlendi. Başka bir çalışmada sentezlenen yapısında
triazol yerine izosteri olan imidazol halkası taşıyan, dört adet bileşik ve bu
çalışmada sentezlenen bileşiklerin AChE ve BChE enzim inhibisyonu Ellman
metodunun modifiye şekli ile değerlendirilirken, antioksidan aktivitesi
1,1-difenil-2-pikrilhidrazil (DPPH) radikal süpürücü aktivite yöntemi ile
değerlendirildi. Sentezlenen yeni bileşiklerin yapıları IR, 1H-NMR, 13C-NMR
ve LC-MS spektroskopik yöntemlerle kanıtlandı. 1, 2, 4-Triazol türevlerinde
herhangi bir aktivite görülmezken, imidazol türevi bileşiklerde AChE enzim
inhibisyonu ve DPPH radikal süpürücü aktivite gözlenmiştir. İmidazol
türevlerinde enzim inhibisyonu aktiviteler IC50 (%50 inhibitör
derişimi) değeri 1000 µM’dan yüksek derişimlerde iken, standart olan Galantamin
bileşiğinde IC50 değeri 21.30 µM ve 37.03 µM’da gözlenmiştir.
Antioksidan aktivite, standart olan gallik asit için IC50 68.83 µM
iken, imidazol türevlerinde IC50 1000 µM’dan yüksek derişimlerde
gözlenmiştir. Bileşiklerde aktivite gözlenmemesi, yan zincirdeki aromatik
halkanın enzim etkileşiminde sterik engel oluşturduğunu düşündürmüştür. Aril (alkil)
azol grubu bileşiklerde, yan zincirde alkil (doymuş, doymamış, halojenli
sübstitüe vb) grubu taşıyan yeni türevler sentezlenerek bu aktivitelerin
değerlendirilmesi planlanmaktadır.
Tıp öğrencilerinde uzmanlaşma eğilimi, uzmanlık alan seçimi ve etkileyen faktörler
Authors: AÇIKGÖZ Bilgehan , EKEMEN Ayşegül , ZORLU İşıl , YÜKSEL Nehir Aslan , AYOĞLU Ferruh Niyazi
Published: March 2019

Amaç: Uzmanlaşma
eğilimi ve uzmanlık alanı seçimi tıp öğrencileri ve hekimlerin kariyer
planlamalarının iki temel unsurudur ve kariyer planlamasına yönelik tercihler
tıp eğitimi sırasında şekillenmektedir. Bu çalışma tıp fakültesi öğrencilerinin
kariyer planlamaları ve etkileyen faktörleri değerlendirmek amacıyla
planlanmıştır. Yöntem: Kesitsel
tipteki çalışma 798 tıp öğrencisinin katılımı ile gerçekleştirilmiştir. Bulgular: Öğrencilerin %85,7’sinin
kariyer planı uzmanlaşmaktır. Uzmanlaşma isteği kadınlarda, preklinik dönemde,
aile ve akrabalarında hekim ve/veya uzman hekim bulunanlarda diğerlerinden daha
yüksektir. En çok tercih edilen uzmanlık alanları Çocuk Sağlığı ve
Hastalıkları, Kadın Hastalıkları ve Doğum ile Ruh Sağlığı ve Hastalıklarıdır.
Uzmanlık yönünde kariyer planlaması yapan öğrencilerde temel gerekçeler
“mesleki tatmin sağlayacak spesifik bir alanda çalışma isteği”, “statü ve
kariyer beklentisi” ile “maddi kaygılar” iken, pratisyen hekimlik yönünde
kariyer planlaması yapan öğrencilerde temel gerekçeler “Tıpta Uzmanlık Sınavının
varlığı”, “Asistanlık sürecinin zorluğu“ ve “Ülkemizdeki sağlık
politikalarıdır”. Sonuç: Hekimlerin
uzmanlaşma eğilimlerinin tespit edilmesi ve tartışılması sağlık insangücü
planlamasında önemli rol oynayacaktır.
Desarterialización hemorroidal transanal en el tratamiento de la patología hemorroidal.
Authors: Pedrosa Soler Marta , Balciscueta Coltell Izaskun , Blanco Francisco Javier
Published: March 2019

La desarterialización hemorroidal transanal guiada por Doppler (THD) es una técnica quirúrgica mínimamente invasiva cada vez más usada en el tratamiento de la patología hemorroidal. El objetivo es evaluar la seguridad y eficacia de la técnica mediante el estudio de los pacientes sometidos a este procedimiento en nuestro centro.
Linfogranuloma venéreo como causa de proctitis y hemorragia digestiva baja. ¿Cuándo sospecharlo?
Authors: Peris Tomás Nuria , Estellés Vidagany Nuria , Díez Ares José Ángel
Published: March 2019

Presentamos el caso de un varón de 40 años que acude a Urgencias por rectorragias. Como antecedentes personales presenta: infección por VIH estadio A1, en seguimiento en CCEE de Medicina Interna desde Mayo 2012, linfadenopatía relacionada con VIH y condilomas acuminados en Diciembre de 2013. Inicio de Terapia Antirretroviral por CV>100.000 copias: TRV/PREZISTA 800 y pendiente de ser citado en la consulta de Cirugía para estudio de tumoración rectal Remitido desde Medicina Interna.
Sustainable mobility planning in Poland
Authors: Wołek Marcin
Published: March 2019

For some time, sustainable urban mobility planning has been in the centre of attention of various cities and municipalities in Poland. Its substance involves integrating the urban transport and spatial policy. While the transport policy is well established in the functioning of Polish cities, its impact on their spatial sphere regarding balancing the mobility is extremely insufficient. The situation is even more difficult in metropolitan areas combining various territorial, functional and spatial subsystems. The article presents the idea and scope of sustainable urban mobility planning, the process of making the mobility in the Polish cities more sustainable, review of strategic documents on the national level referring to the said issue and the process of space metropolization as a challenge for developing mobility in a sustainable manner.
Sustainable transport development and the quality of road freight transport
Authors: Rucińska Danuta , Kędzior-Laskowska Małgorzata
Published: March 2019

The aim of the article is to show the relationship between quality and sustainable development of road freight transport. The macro and microeconomic perspective of the possibilities of impacting the greening of transport, which is a development of the sector and entrepreneurs, was presented. Recommendations regarding the development of road freight transport including the EU and Polish transport policy were discussed. The possibilities for the development of road carriers in the conditions of transport greening, with particular emphasis on pro-quality activities were introduced.

The analysis of the problem was based on literature studies, statistics were also taken into account. In addition, the results of primary studies regarding the impact of the sustainable development principle and the quality of road freight transport services were presented. The research was conducted on the basis of a questionnaire, and in the interpretation of the results, position, variability and one-dimensional analysis of variance (ANOVA) were used.
Robust Authorship Verification with Transfer Learning
Authors: Boumber Dainis , Zhang Yifan , Hosseinia Marjan , Mukherjee Arjun , Vilalta Ricardo
Published: March 2019

We address the problem of open-set authorship verification, a classification task that consists of attributing texts of unknown authorship to a given author when the testing set may differ significantly with the training set in terms of documents and candidate authors. We present an end-to-end model-building process that is universally applicable to a wide variety of corpora, with little to no modification or fine-tuning. It relies on transfer learning of a deep language model and uses a generative adversarial network and a number of text augmentation techniques to improve the model's generalization ability. The language model encodes documents of known and unknown authorship into a domain-invariant space, aligning document pairs as input to the classifier while keeping them separate. The resulting embeddings are used to train an ensemble of recurrent and quasi-recurrent neural networks. The entire pipeline is bidirectional; forward and backward pass results are averaged. We perform experiments on four traditional authorship verification datasets, a collection of machine learning papers mined from the web, and a large Amazon-Reviews dataset. Experimental results outperform baseline and state-of-the-art techniques, validating the proposed approach.
Modelo para estimar el esfuerzo que demanda la automatización de procesos de negocio
Authors: Granados Hondares Yaimara , Ferreira Lorenzo Gheisa Lucia
Published: March 2019

El desarrollo de productos de software ha impactado de forma significativa al mundo empresarial, que ha dejado atrás su enfoque funcional y ha empeñado recursos en la modelación con calidad de sus procesos de negocio. Numerosos estudios dedicados a medir indicadores como calidad, complejidad y facilidad de modificación, atendiendo a los constantes cambios organizacionales, han dado como resultado la definición de diferentes métricas, que en su mayoría se han seleccionado haciendo analogías con métricas de software. En este trabajo se define un modelo estadístico que permite la predicción del esfuerzo requerido en la automatización de procesos de negocio, tomando como punto de partida su representación gráfica. Se proponen métricas relativas a los modelos de procesos de negocio con el fin de estudiar su comportamiento e influencia en la estimación del esfuerzo. Se construyó una base de casos de modelos de procesos de negocio con sus respectivos valores del esfuerzo, realizándose el procesamiento a partir técnicas estadísticas y obteniéndose un modelo de predicción que es capaz de explicar el 99.5 % de los casos representados. Se desarrolló una aplicación informática para la interpretación de diferentes formatos de salida de herramientas que permiten modelar procesos de negocio y la implementación del modelo predictivo obtenido.
Modelado y simulación de la deformación plástica del aluminio ASTM A1200 durante el proceso de conformado mecánico
Authors: Juiña Luis C , Cabrera Víctor H , Moreno Nancy V , Anrango Cristian A
Published: March 2019

La investigación tiene por finalidad evaluar el comportamiento de un material al ser sometido a una deformación plástica. El proceso estuvo compuesto de una fase analítica realizada mediante formulaciones previas y por un proceso de integración con el fin de determinar el desarrollo en plano de una pieza conformada, para ello se establecieron los esfuerzos generados y cambios de sección durante el proceso de embutido, se utilizó software de simulación basado en elementos finitos para evaluar el comportamiento del material en el proceso mencionado. En la parte experimental se determinó las características mecánicas del material, aluminio ASTM A1200, mediante el ensayo normalizado, el límite de fluencia fue de 214 MPa. El proceso de conformado se efectúo en una prensa de 5 t con dispositivo neumático, se realizaron varios ensayos con diferentes profundidades con el objetivo de comparar los resultados analíticos y el ensayo respectivo; determinar la variación entre la simulación y el modelo físico, de los cuales el error máximo fue de 3.67 % a 15 mm de profundidad y el mínimo de 0.24 % con la profundidad total. Con respecto a los esfuerzos generados durante el conformado, los errores máximos y mínimos fueron de 10.9 % y 2.18 %, respectivamente.
Asignación óptima de recursos de comunicaciones para sistemas de gestión de energía
Authors: Ruiz Maldonado Milton Gonzalo , Inga Esteban
Published: March 2019

El presente artículo plantea la asignación óptima de recursos de los canales de radio disponibles en las redes celulares para la transmisión de datos desde los medidores inteligentes de energía eléctrica hacia los sistemas de gestión de información. El modelo planteado identifica y contabiliza a los abonados del sector eléctrico en un área geográfica; mediante el algoritmo de clusterización kmeans se ubican las radios bases celulares, las mismas que brindan comunicaciones a los dispositivos dentro de su radio de cobertura. Los canales de comunicación disponibles para la transmisión de datos son optimizados usando el algoritmo de Greedy, el mismo regula el tiempo en que los medidores inteligentes deben enviar su data a través de los canales de comunicación en desuso.
A visual analytics architecture for the analysis and understanding of software systems
Authors: González-Torres Antonio , Navas-Sú José , Hernández-Vásquez Marco , Hernández-Castro Franklin , Solano-Cordero Jennier
Published: March 2019

Visual analytics facilitates the creation of knowledge to interpret trends and relationships for better decision making. However, it has not being used widely for the understanding of software systems and the change process that takes place during their development and maintenance. This occurs despite the need of project managers and developers to analyze their systems to calculate the complexity, cohesion, direct, indirect and logical coupling, detect clones, defects and bad smells, and the comparison of individual revisions. This research considers the design of an extensible and scalable architecture to incorporate new and existing methods to retrieve source code from different versioning systems, to carry out the analysis of programs in different languages, to perform the calculation of software metrics and to present the results using visual representations, incorporated as Eclipse and Visual Studio extensions. Consequently, the aim of this work is to design a visual analytics architecture for the analysis and understanding of systems in different languages and its main contributions are the specification of the design and requirements of such architecture, taking as base the lessons learned in Maleku (A. González-Torres et al., 2016).
Polyamid Malzemelerde Yüzey Pürüzlüğünün Belirlenmesi İçin Yapay Zeka Destekli Bir Uygulama Tasarımı
Authors: BOZDEMİR Mustafa
Published: March 2019

Mühendislik
işlemlerinde, yüzey kalitesi malzemelerin kalite göstergelerinden birisidir.
Talaşlı imalat işlemlerinde elde edilmek istenen yüzey kalitesi, yüzey
pürüzlülüğü ölçümüyle kontrol edilir. Yüzey pürüzlülüğü oluşumunu etkileyen
birçok faktör bulunmaktadır. Kullanılan kesici takım cinsi, malzeme türü, kesme
şartları gibi faktörler yüzey pürüzlüğü değişimini etkiler. Bu çalışmada,
deneysel olarak bulunan ortalama yüzey pürüzlüğü değerleri geliştirilen uzman
sistem bilgisayar programının bilgi tabanına dinamik olarak yüklenmektedir.
Genel talaşlı imalat kesme şartlarına ait bilgilerde sisteme karar verme
aşamasında destek olmaktadır. Bu sayede, belirlenen kesme durumlarında oluşması
beklenen ortalama yüzey pürüzlüğü değeri, uzman sistemin sağladığı avantajla
çok hızlı ve doğru şekilde belirlenebilmektedir.
Pişmiş Brokoli ve Karnabahar İçin Vakum Soğutma Enerji Analizi
Authors: ÖZTÜRK Harun Kemal , MUTLU ÖZTÜRK Hande
Published: March 2019

Vakumla soğutma, gözenekli ve serbest
su içeren herhangi bir ürün için uygulanabilen hızlı buharlaşmalı soğutma
tekniği olarak bilinir. Bu teknik, yapraklı sebzelerin ve mantarın, fırın
ürünlerinin, balılığın, sosların, pişirilmiş yiyeceklerin ve özel gıdaların ön
soğutması için kullanılır. Vakum soğutmanın kısa sürede soğutması, ürün raf
ömrünün uzatılması ve ürün kalitesinin ve güvenliğinin geliştirilmesi gibi bazı
avantajları vardır. Bu çalışmanın amacı, pişirilmiş brokoli ve karnabaharın
soğutulması için vakum soğutma tekniğini uygulamak ve soğutma süresi ve
sıcaklık düşüşü üzerindeki basınç etkisini göstermektir. Vakum soğutmanın sonuçları,
farklı sıcaklıklar için geleneksel soğutma (buzdolabında soğutma) ile de
karşılaştırılmaktadır. Ayrıca, bu çalışmada pişmiş brokoli ve karnabahar için
vakum soğutma enerjisi analizi çalışılmıştır. Pişmiş brokoli ve karnabaharın
geleneksel soğutma ile karşılaştırıldığında çok daha hızlı ve verimli bir
şekilde soğutulabileceği gösterilmiştir.
Konya Gürültü Kirliliği ve Eylem Planlarının Yorumlanması
Authors: DALKILIÇ Emre , DURSUN Şükrü
Published: March 2019

İnsanoğlunun hayatında
huzurun değeri hiçbir varlıkla değiştirilemeyecek kadar yüksektir. Ancak
dünyamızdaki hızlı nüfus artışı, teknolojik gelişmeler, sanayileşme ve
trafikteki araç sayısının artışı gibi birçok faktör pek çok sorunu beraberinde
getirmektedir. Gürültü: çevresel kaliteyi, hoş görüntüyü ve insan sağlığını
olumsuz yönde etkileyen önemli bir sorundur. Gürültüyü hoşa gitmeyen ses veya
var olan doğal sesin kirlenmiş hali olarak tanımlayabiliriz. Özellikle büyük
kentlerimizdeki gürültü, çağımızın hastalığı olan stres başta olmak üzere insan
yaşamını ve doğal hayatı etkileyerek, kentlerimizi yaşanmaz hale getirmekte ve
toplumsal sorunlar açığa çıkmaktadır. Bu çalışmada Konya’da Konya Büyükşehir
Belediyesi tarafından yapılan uzun süreli ölçüm, izleme ve değerlendirme
sonucunda oluşturulan eylem planları uygulama çalışmalarının gürültü kirliliği
üzerindeki sonuçlarının değerlendirilmesi yapılmıştır. Kentte eğlence mekânları
civarındaki gürültünün kontrolünün gerektiği, trafikte yeşil şerit
uygulamaları, raylı sistem ve demiryolu hattında yapılan iyileştirmeler
değerlendirilmiş, mevcut iyileştirmelerin problemin çözümünde yeterli olmadığı
görülmüştür. Eylem planları uygulama mevcut azaltıcı ve önleyici faaliyetlerin
kent gürültü kirliliği üzerine olası etkileri değerlendirilmiştir. Eğlence
yerleri, trafik, raylı sistemler ve sanayi kaynaklı gürültü kirliliğinin
azaltılması ve önlenmesini içeren Gürültü Haritaları ve Maruziyet Analizleri
yorumlanmıştır. Bu çalışma sonrasında Çevresel Gürültü Eylem Planı kapsamında;
Konya Kent Merkezine (Meram, Karatay, Selçuklu ilçeleri) ait topoğrafik
haritalar ile birlikte modellenmesi, her bir gürültü kaynağına ilişkin (Eğlence
yerleri, Raylı sistem ve demiryolu, endüstri ve trafikten kaynaklı) gürültü
haritaları yorumlanmıştır.
Specific features of formation of bulk porous systems in the self-propagating high-temperature synthesis. Borides
Authors: Klubovich V. V. , Kulak M. M. , Khina B. B.
Published: March 2019

The effect of ultrasound oscillations (USO) on the combustion velocity and temperature, phase composition and microstructure of compounds produced by the self-propagating high-temperature synthesis (SHS) in the Ti–B system is studied using the earlier developed experimental setup. It is shown that the effect of powerful ultrasound on SHS is connected with the thermal factor, viz. the enhancement of heat removal from the specimen surface due to forced convection, and the physical (non-thermal) factor that consists in the influence of USO on the melt spreading and crystallization of different phases in the SHS wave. It is demonstrated that for multiphase system Ti–B an increase of the boron content in the initial charge leads to grain refinement of the synthesized product and the imposition of USO on the SHS results in a change in the grain morphology: their shape becomes closer to equiaxial. In composition Ti+1.5B, under the action of USO cubic-shape product grains are observed on the inner surface of pores, and in composition Ti+2.0B the synthesized TiB2 grains become more vividly facetted.

As a result of imposition of ultrasound on the synthesis process, grain refinement is observed for all the compositions along with the formation of a large number of borides and their redistribution in the volume. The use of ultrasound brings about changes in the quantitative phase composition of the synthesis products and the ratio between the orthorhombic and cubic modifications of phase TiB. The research has shown that the presence of pores in the initial charge plays an important role in the structure formation of the final product, and hence it appears impossible to obtain an equilibrium material by the SHS method. It is found that an optimal USO amplitude exists at which it is possible to obtain uniform fine-grained structure of the material. This permits controlling the structure formation at SHS.
Plasma coatings containing high-baring phases
Authors: Rudenskaya N. A. , Shveykin G. P. , Rudenskaya M. V.
Published: March 2019

Results of comparative researches of the initial and processed in a plasma flow oxidic microcomposites, consisting of TiO2, SiO2, Al2O3, ZrO2, and plasma coverings from them – the materials which are characterized by amorphous and crystal structure and strengthened by ultradispersed phases of the stishovit, are presented. It is shown the influence of a type, structure and a way of processing of material (initial powder of different dispersion; the powder obtained in a plasma flow at the different modes and with the normal and accelerated cooling; a plasma layered composite) on the content of silicon oxides, aluminum and titanium, on the type of polymorphic transformations (anatase is found both in powders, and in coverings; the accelerated cooling of spheroids leads to growth of its contents in microcomposites) and also on feature of forming in ceramic materials of a high-bar phase – the stishovit (stishovit it is found only in coverings). It is established that increase in power of the plasma generator leads to increase in extent of amorphicity of plasma-layered composites. In the structure of layered composites three groups of the inclusions, combined by the composition, are revealed: two groups of aluminosilicates and inclusions on the basis of zirconium dioxide. Inclusions of the third group are characterized by two types of structures: homogeneous, consisting of zircon, and plated (with a kernel of dioxide of zirconium and a cover from zircon). The developed layered composites are characterized by high wear resistance, corrosion resistance and antifriction properties. In the conditions of low-temperature plasma at atmospheric pressure the stishovit-containing materials are obtained for the first time.
Influence of the structure of the steel of electroslag remelting on the properties of cemented and nitrided surfaces of machine parts
Authors: Vitiaz P. A. , Moiseenko V. I. , Sidorenko A. G. , Sotnikov M. V.
Published: March 2019

The analysis of the influence of electroslag remelting steel structure on the properties of cemented and nitrided surfaces of machine parts is carried out. It is noted that when using electroslag remelting, the greatest efficiency is achieved in the production of large-sized gearwheels, hardened by cementation and ion nitriding. It is shown that cast steel, crystallized in a water cooled crystallizer, has a strength not lower than forged or rolled with significantly lower anisotropy properties and accelerated carbon diffusion when cementation. The discovered patterns are caused by the structural and chemical homogeneity of boundary grain volumes, which formation is affected by copper impurities. Uniform density of copper in the said volumes not only reduces their propensity to localize plastic deformation, but contributes to a higher ability for uniform carburization of these steels in the process of cementation. This causes a change in the main characteristics of the cemented layers and is the basis for increasing the bearing capacity of the gearwheels. The obtained results also testify to the fact that controlling grain-boundary effects in steel material at the stage of crystallization of blanks can be a significant factor in increasing the characteristics of the hardened layer in the manufacture of nitrided gearwheels from cast blanks of the electroslag redistribution. A set of studies was carried out and results were obtained which indicate that the control of grain boundary effects in modern steel material at the stage of its crystallization may be a significant factor in improving the characteristics of the hardened layer in the manufacture of cemented and nitrated gear wheels from cast billets electroslag remelting.
Experimental determination of the rational geometrical parameters of the sprinkler frame arms and deflector on the expansion rate and stability of foam
Authors: Kamluk A. N. , Likhamanau A. O.
Published: March 2019

The results of experimental studies on determination of the effect of the deflector-type sprinkler geometric parameters on the air-mechanical foam formation process are presented in the article. A collapsible sprinkler was developed for the experiment. The elements of the collapsible sprinkler which allow creating its various configurations in a fairly wide range of geometric parameters were made from polylactide (PLA-plastic) with the help of 3D printing. The dependencies of the air-mechanical foam expansion rate and stability on the sprinkler holder length, as well as the external diameter, the taper angle and the ledges height of the sprinkler sprayer were established. The ranges of optimal values along the holder length L = 45÷55 mm and the sprayer ledges height h = 1÷3 mm of the sprinkler for generation of foam with the greatest expansion rate and stability were determined, as well as the ranges of values of these parameters at which the change in the quality characteristics does not occur (L = 90÷150 mm, h = 5÷15 mm). A decrease in the foam quality characteristics with an increase in the sprayer taper angle of the sprinkler was established. Approximate dependencies of the foam expansion rate and stability on the sprayer taper angle of the sprinkler in the range α = 30÷135° were obtained. In addition, it is determined that an increase in the sprayer external diameter in the range from 20 mm to 100 mm results in a gradual deterioration in the foam qua lity. The results of the conducted researches will allow optimizing geometrical parameters of existing designs of deflector-type sprinklers with the aim to increase their fire extinguishing efficiency.
KARAKTERISTIK PENGERINGAN SAWUT MOCAF MENGGUNAKAN ALAT PENGERING TENAGA SURYA TIPE GREENHOUSE
Authors: Murad Murad , Sabani Rahmat , Kurniawan Hary , Muttalib Surya Abdul , Khalil Fakhrul Irfan
Published: March 2019

Tujuan dari penelitian ini adalah untuk mempelajari karakterisitik Pengeringan Sawut Mocaf  menggunakan alat pengering tenaga surya tipe greenhouse. Metodologi yang digunakan dalam penelitian ini adalah metode eksperimental dengan mengukur beberapa parameter, yaitu  penurunan berat bahan, kadar air, suhu pengering, suhu lingkungan, kelembaban udara dan laju pengeringan. Alat yang digunakan adalah pengering tenaga surya tipe greenhouse, termokopel CA tipe CC (Cooper Constanta), timbangan digital, timbangan analitis, anemometer, rekam data, luxmeter, stopwatch, termometer batang dan alat tulis. Pengambilan data dilakukan setiap 30 menit. Hasil penelitian menunjukkan karakteristik suhu di dalam ruang pengering ERK yang diukur pada setiap rak dan pada bagian saluran udara keluar melalui exhaust fan. Peningkatan radiasi surya pada umumnya terjadi pada tengah hari yaitu sekitar pukul 12.00 wita sampai pukul 13.00 wita, sedangkan pada saat pemantauan ERK kondisi cuaca cukup berawan sehingga terjadi penurunan radiasi surya. Didapatkan rata-rata temperatur ruang pengering selama pengeringan adalah 39oC, kelembaban udara relatif rata-rata 63%, penurunan berat bahan tiap jam rata-rata 0,95 gram/jam, laju penurunan kadar air rata-rata 55,25% db/jam dari kadar air awal sebesar 67% db sampai kada air mencapai 10%db dan rata-rata Me diperoleh sebesar 14,22%. Dari hasil penelitian pengeringan sawut mocaf  yang diperoleh, maka disimpulkan bahwa laju perubahan kadar air MOCAF  memiliki karakteristik laju menurun terhadap waktu.
KAJIAN PROSES DAN ANALISIS KELAYAKAN FINANSIAL USAHA UBI CILEMBU BAKAR
Authors: Thoriq Ahmad , Widyasanti Asri
Published: March 2019

Ubi cilembu merupakan varietas unggul lokal asal Desa Cilembu Kabupaten Sumedang, Jawa Barat. Rasa yang manis seperti madu dihasilkan melalui proses penanaman pada ketinggian tertentu, pemeraman setelah pasca panen, dan dipanggang menggunakan oven.  Kebijakan konversi bahan bakar minyak ke bahan bakar gas, berimplikasi pada usaha pemanggangan ubi cilembu yang sebelumnya menggunakan oven berbahan bakar minyak tanah. Namun seiring terbatasnya ketersediaan dan tingginya harga minyak tanah menuntut modifikasi oven pemanggang menggunakan bahan bakar gas. Penelitian ini bertujuan melakukan kajian proses dan menganalisis kelayakan finansial usaha pemanggangan ubi cilembu.  Metode yang digunakan pada penelitian ini adalah metode ekperimen yang di kolaborasikan dengan metode deskriptif untuk untuk menganalisis kelayakan finansial usaha pemanggangan ubi cilembu. Hasil penelitian menunjukkan bahwa suhu rata-rata ruang pemanggang adalah 138 0C, kapasitas efektif pemanggangan 6,64 kg/jam, laju konsumsi LPG 0,44 kg/jam, Laju penurunan berat rata-rata ubi cilembu selama proses pemanggangan 5,66 gram per menit untuk grade C dan 3,68 gram per menit untuk grade B dengan rendemen ubi cilembu pangang yang dihasilkan sebesar  77,38% dan bobot sebesar 22,62%. Berdasarkan analisis kelayakan finansial didapatkan HPP Rp. 14.132,72/kg, NPV Rp. 73.154.539/bulan, BCR 1,28, IRR 20,06 % dan modal akan kembali pada bulan kedelapan.
THE EFFECT OF CONVECTIVE FIXED BED DRYING BASED ON A SOLAR COLLECTOR AND PHOTOVOLTAIC (CSD) TO THE QUALITY ATRIBUTES OF RED PEPPER COMPARED WITH CONVENTIONAL CONVECTIVE FIXED BED DRYING (CCD)
Authors: Mardiyani Siti Asmaniyah , Sumarlan Sumardi Hadi , Argo Bambang Dwi , Leksono Amin Setyo
Published: March 2019

The effect of conventional convective drying (CCD) and convective solar drying (CSD) based on a solar collector and photovoltaic on the quality of dried red pepper was researched. The study was aimed to determine the effect of five drying system (CCD 50°C, CCD 60°C, CCD 70°C, CSD, and open sun drying) on the quality attributes of dried red pepper. The quality observed were rehydration ratio, ascorbic acid, capsaicin, non-enzymatic browning index, anthocyanin, and carotenoids. The results of the study confirmed that the drying system significantly affected the quality attributes of dried red pepper except for anthocyanin.  The CSD had a satisfactory result, shown by some attributes  (carotenoids, ascorbic acid, and ratio) which were not statistically different from the quality of dried red pepper gained from CCD 50°C.
SYPHILIS;
Authors: Ashfaq Ahsan , SALDERA KAUSAR ABBAS , EJAZ AYESHA , MEMON NOOR-UN NISA , RASHID HINA , IQBAL BEENISH
Published: March 2019

Objectives: To assess serum Neopterin levels in blood donors of local population and to study its relationship with transfusion transmitted infections (TTIs) including syphilis. Study Design: Descriptive cross-sectional study. Place and Duration of Study: This study was carried out in the Department of Physiology LNMC in collaboration with Basic Medical Sciences Institute, (BMSI), and Jinnah Post Graduate Medical Centre (J.P.M.C.) Karachi, from Jan to July 2015.”Methods: Total 174 blood donors were included in the study through random sampling technique. They were screen through the standard procedures used for screening at the JPMC blood bank for WHO recommended diseases. Neopterin was estimated using ELISA. Data analysis was performed using SPSS version 21. Chi square and ANOVA were applied at a confidence level of 95%.”Results: Neopterin level in the sera of syphilis positive blood donors was 5.86 ± 0.78 nmol/l which was within normal range below the cutoff value of 10 nmol/l. Neopterin content in the serum of blood donors who were negative for transfusion transmitted infections was 6.23± 2.19 nmol/l as compared to blood donors testing positive for transfusion transmitted viral infections showing high Neopterin level of 15.10 ± 4.93 nmol/l. (P value 0.001).”Conclusion: Neopterin levels were found to be within normal limits in blood donors testing positive for syphilis However in  blood donors with transfusion transmitted viral infections  serum neopterin levels were elevated.