bluuebunny/crossref_metadata_2025 huggingface dataset:
Ana muharebe tankının modellenmesi ve silah salınımlarının azaltılması için LQR kontrolör tasarımı
Authors: ÇAKIR Muhammed Fatih , BAYRAKTAR Meral
Published: July 2020

Ana muharebe tankları ülkelerin kara savunma güçlerinde önemli yere sahiptir. Zorlu arazi şartlarına karşı dayanıklı, hedefe hızlı ve doğru şekilde odaklanabilen silah sistemi bulunan ana muharebe tanklarına sahip ordular kara savaşlarında büyük üstünlük sağlamaktadırlar. Bu yüzden son yıllarda ana muharebe tanklarına yönelik akademik çalışmaların arttığı görülmektedir. Bu çalışma ana muharebe tankının modellemesi ve silah salınımlarının azaltılması için LQR kontrolör tasarımını içermektedir. Ana muharebe tankı gövde ve silah sistemi olarak ayrı ayrı ele alınmıştır. Gövde ana kütle ve alt kütlelerden oluşmaktadır. Silah sistemi yatay eksende hareketi sağlayan azimut dinamiği ve düşey eksende hareketi sağlayan yükseltme dinamiği olarak iki kısımda incelenmiştir. Yükseltme dinamiği analizinde kullanılan APG (Aberdeen Proven Ground) yol profili tanka bozucu giriş olarak uygulanmış, gövdeye ait ana kütle ve yükseltme dinamiği zaman cevapları incelenmiştir. Düşey düzlemde silah sisteminde salınımlar meydana geldiği görülmüştür. Bu salınımları önlemek amacıyla LQR kontrolör tasarlanmıştır. Aktif ve pasif durumlar karşılaştırıldığında salınımların büyük oranda azaltıldığı, namlunun hedeften sapmasının önlendiği görülmüştür. Ayrıca uygulanan kontrolör kuvvetlerinin uygulanabilir oranlarda oldukları belirlenmiştir.
Otomobil güç aktarım sistemleri için elastomer yaylı sönüm sisteminin tasarımı ve doğrulanması
Authors: GENÇ Mehmet Onur , KAYA Necmettin
Published: July 2020

Otomobillerde artan yüksek konfor gereksinimleri, optimum sistem tasarımı ve uzun kullanım ömrü gerekliliklerini ortaya koymuştur. Bu çalışmada otomobil debriyaj sistemlerinde elastomer tabanlı malzemelerin sönümleyici olarak kullanılması tasarım, test ile doğrulama, tasarım ve sistem optimizasyonu temel aşamaları dikkate alınarak incelenmiştir. Yapılan çalışmalarda geleneksel metal helisel yaylar ile karşılaştırma yapılarak, elastomer yaylı ve metal yaylı sistemlere ait avantaj ve dezavantajları analiz ve test sonuçları ile gösterilmiştir. Elastomer malzemeler hiperelastik ve viskoelastik özelliklerinden dolayı kuvvete, zamana, sıcaklığa, malzeme özellikleri gibi birçok değişkene bağlı olarak metal malzemelerden farklı tepkiler gösterirler. Sürüş güvenliği, mekanik sağlamlık ve ürün ömrü otomobillerde garanti altına alınması gereken konulardır, bu sebeple yüksek dinamik ve termal yüklere maruz kalan debriyaj sisteminde elastomer yay rijitliği için güvenlik faktörü seçiminde yapılması gereken yaklaşımlar da ortaya konulmuştur. Elastomer yay malzeme testleri, son ürün testleri ve sonlu elemanlar analizi ile doğrulanmasının ardından komple otomobil güç aktarım sistemi bir boyutlu modellenerek sistem davranışları karşılaştırmalı olarak incelenmiştir. Otomobil debriyaj sistemleri için elastomer yayların incelenmesi ve bu yayların güç aktarım sistemi için optimizasyonu bu alanda yapılan yeni bir çalışma olup, alternatif malzemelerin yeni nesil otomobillere adaptasyonu ve uygulanması konusunda temel oluşturabilecek niteliktedir.
Zonguldak-Karadon kömüründen elde edilen aktif karbonların oda sıcaklığında aseton adsorpsiyon özelliklerinin incelenmesi
Authors: OGUZ ERDOGAN Fatma , KOPAC Turkan
Published: July 2020

Zonguldak, Türkiye’nin en büyük taşkömürü yataklarının bulunduğu, sınırları içerisinde bir çok kömür maden ocağının yer aldığı Batı Karadeniz kıyısının önemli bir kömür kentidir. Bu çalışmada Zonguldak Karadon kömür ocağından alınan bitümlü kömür örneklerinden fiziksel ve kimyasal yöntemlerle elde edilen aktif karbonların oda sıcaklığındaki aseton adsorpsiyon özelliklerinin incelenmesi amaçlanmıştır. Aseton adsorpsiyonuna adsorbent hazırlama yöntemi, aktifleştirme ajanı (KOH, NaOH, ZnCl2 ve H3PO4) ve aktifleştirme sıcaklığının (400-800°C) etkileri incelenmiştir. Karadon kömüründen elde edilen farklı aktif karbonlar üzerinde aseton adsorpsiyon mekanizmasının açıklanması amacıyla, aseton adsorpsiyon denge verileri Brunauer-Emmett-Teller, Langmuir, Freundlich, Harkins-Jura, Dubinin-Radushkevich, Dubinin-Astakhov, Henderson, Halsey ve Smith olmak üzere farklı adsorpsiyon izoterm modelleriyle değerlendirilmiş, model parametreleri belirlenmiştir. Maksimum adsorpsiyon kapasitesini veren Langmuir adsorpsiyon modeli sabiti Wm 0,12-0,63 g/g değer aralığında bulunmuştur. Dubinin-Radushkevich modelinden hesaplanan adsorpsiyon karakteristik enerjisi E0’ın 2,87-29,80 kJ/mol aralığında olduğu belirlenmiştir. Kimyasal yöntemle elde edilen aktif karbonların fiziksel aktifleştirme yöntemiyle elde edilen aktif karbonlardan daha yüksek aseton adsorpsiyon kapasitesine sahip oldukları, aseton adsorpsiyon kapasitesinin genellikle toplam gözenek hacmi ile arttığı görülmüştür. Zonguldak-Karadon kömürünün KOH ile 700 ve 800°C’de aktifleştirilmesiyle elde edilen aktif karbonların sırasıyla % 45 ve % 45,99 ile en yüksek aseton adsorpsiyon kapasitesine sahip oldukları belirlenmiştir. Zonguldak-Karadon kömürünün kimyasal aktifleştirilmesiyle elde edilen aktif karbonların aseton adsorpsiyonu için oldukça etkin oldukları ve aseton buharlarının arıtılmasında ticari olarak yüksek bir potansiyele sahip adsorbentler olabilecekleri belirlenmiştir.
Polioksimetilen (POM) / polipropilen (PP) harmanlarının uyumlaştırılması ve mekanik, reolojik ve katı-hal sünme özelliklerinin incelenmesi
Authors: KAŞGÖZ Alper
Published: July 2020

Sunulan çalışmada farklı bileşimlere sahip polioksimetilen (POM)/polipropilen (PP) harmanları ekstrüzyon yöntemiyle hazırlanarak morfolojik, reolojik, mekanik ve sünme davranışları karakterize edilmiştir. Örnek hazırlama aşamasında uyumlaştırıcı olarak farklı oranlarda maleik anhidrit graft polipropilen (PPgMA) içeren örneklerde hazırlanarak optimum uyumlaştırıcı miktarı belirlenmiştir. Morfolojik analizlerde PP ve POM’un ara yüzeylerinde zayıf etkileşimin göstergesi olan boşluklar gözlenmiş ve uyumlaştırıcı içermeyen PP/POM harmanlarının 50/50 oranında hazırlanması durumunda eş-sürekli morfolojinin sağlandığı gözlenmiştir. Eşit oranda POM ve PP içeren harman örneğine 20 phr oranında PPgMA katılmasıyla belirgin faz ayrımlarının önemli ölçüde azaltılarak fazlar arası yapışmanın sağlandığı görülmüştür. Örneklerin reolojik analizleri POM’un PP’ye göre daha düşük eriyik viskozitesine sahip olduğunu ve harmandaki PP içeriğinin artmasıyla kompleks viskozite değerinin arttığını ortaya koymuştur. Mekanik, reolojik ve sünme test sonuçları eş anlı olarak değerlendirildiğinde düşük modül değerlerine rağmen PPgMA’nın yapıya katılması fazlar arası yapışmayı sağlamasına bağlı olarak elastik modül ve sünme direnci parametrelerinde gelişme sağlamıştır. Ancak bu gelişmeler uyumlaştırıcının 10-15 phr kullanılması durumunda en yüksek etkiye ulaşırken 20 phr değerinde elde edilen pozitif katkılar kaybolmaya başlamıştır. Bu sonuçlardan 10-15 phr oranında PPgMA kullanımı optimum uyumlaştırıcı konsantrasyonu olarak belirlenmiştir.
Tedarik zinciri performans değerlendirmesi için yeni bir yaklaşım
Authors: ERİK Adem , KUVVETLİ Yusuf
Published: July 2020

Tedarik zincirleri, hammaddeden bitmiş ürüne kadar geçirilen tüm sürecin ve bilginin yönetimini kapsamaktadır. Bu durum, tedarik zincirlerinin bütüncül olarak ele alınmasını ve performans ölçümünü oldukça önemli hale getirmektedir. Tedarik zincirlerinde performans ölçümü ile ilgili en yaygın kullanılan yaklaşımlardan birisi SCOR modelidir. Bu çalışmada, tedarik zincirlerinde performans ölçümü için SCOR modeli tabanlı iki farklı ölçüm sistemi önerilmiştir. İlk önerilen yaklaşıma göre, kümeleme analiziyle farklı kümeler oluşturularak işletmelerin benzer özniteliklere sahip olan işletmelerin performans ölçümlerinin bir arada yapılması sağlanmıştır. Kümeleme analizinin uygulanmasında k-ortalamalar (k-means) yaklaşımı kullanılmıştır. İkinci yaklaşımda ise Alfa Düzeyine Bağlı Bulanık Shannon Entropi ile öznitelikler ağırlıklandırılmış ve buna göre SCOR modeli için performans değerlendirilmesi yapılmıştır. Uygulamada 54 farklı işletmeden 17 farklı özniteliğe sahip veriler alınmış ve temel SCOR modeli ve önerilen iki yaklaşımın sonuçları irdelenmiştir.
İki düzlemsel robot kol iş birliği ile çalkalanmadan sıvı taşınımının kutup yerleştirme ve LQR kontrolü
Authors: NASERİ SOUFİANİ Babak , ADLI Mehmet Arif
Published: July 2020

Günümüzde robotların günlük yaşamdaki kullanım alanları ve üstlendikleri roller hızla artmakta ve çeşitlilik göstermektedir. Robotlar ile sıvı taşıma işlemi de son zamanlarda bu kapsamda üzerinde çalışma yapılmaya başlanan konular arasındadır. Bu makalede, içi sıvı dolu bir kabın iki robot kolu işbirliğiyle çalkalanmadan ve dökülmeden taşınması incelenmiştir. İki robotik kol herhangi bir nesneyi birlikte hareket ettirdiğinde, kinematik olarak kapalı bir zincir oluşur ve bu durum, ele alınan sistemin matematiksel olarak karmaşıklığını artıran bir dizi kısıtlamaların ortaya çıkmasına neden olur. Bu çalışmada, sıvı çalkalanmasının doğrusal olmayan dinamiği, Genişletilmiş Taylor Serisi fonksiyonları ile doğrusalaştırılmıştır. Ardından, sıvı dolu kabı çalkalanmadan, dökülmeden ve yüksek hızla taşımak için kutup yerleştirme (Pole Placement) ve doğrusal karesel düzenleyici (LQR) kontrol yöntemleri kullanılıp, bu iki yöntem sonuçları birbirleriyle teknik olarak karşılaştırılmıştır.
Asetabulum Kırıkları Cerrahi Tedavisinde Posterior Yaklaşım: Klinik ve Radyolojik Sonuçlar
Authors: TOPAL Murat , AYDIN Ali , PAKSOY Ahmet Emre , ZENCİRLİ Kemal , KÖSE Ahmet , YILDIZ Vahit , DİNÇER Recep
Published: July 2020

Giriş ve Amaç: Asetabulum kırıkları sık rastlanmayan, kompleks yaralanmalardır. Bu çalışmada posterior yaklaşımlarla opere ettiğimiz asetabulum kırıklı hastaların radyolojik ve fonksiyonel sonuçlarını değerlendirmeyi amaçladık.
Yöntem: 2011 ile 2014 yılları arasında asetabulum kırığı nedeniyle opere edilen, en az 1 yıllık takipleri yapılabilmiş olan 36 olgu bu çalışmaya dahil edilmiştir. Retrospektif olarak planlanan çalışmamızda kırık sınflandırması Letournel Judet sistemine göre, radyolojik değerlendirme Matta kriterlerine göre, fonksiyonel skorlar modifiye Merle d’Aubigne Postel sistemine göre yapıldı.
Bulgular: Toplam 36 olgunun 25’i sadece posterior yaklaşımla opere edilmişken 11’inde kombine anterior ve posterior yaklaşım uygulanmıştır. Komplikasyon oranları güncel literatürle uyumlu bulunmuştur. Fonksiyonel skorlar değerlendirildiğinde 29 (%80,6) olguda mükemmel ve iyi sonuç, 3 (%8,3) olguda orta, 4 (%11,1) olguda kötü sonuç elde edilmiş, radyolojik sonuçlar değerlendirildiğinde 29 (%80,6) olguda mükemmel ve iyi sonuç, 3 (%8,3) olguda orta, 4 (%11,1) olguda kötü sonuç elde edilmiştir.
Sonuç ve Çıkarımlar: Asetabulum kırıkları cerrahisi, teknik olarak zor, komplikasyon oranları yüksek olmasına rağmen deplase asetabulum kırıklarında açık redüksiyon ve internal fiksasyon endike olduğu durumlarda altın standart tedavi yöntemidir. Olgu sayısı kısıtlı olan 36 olguluk serimizde radyolojik ve fonksiyonel sonuçlarımızın güncel literatürle uyumlu olduğunu gördük.
Machine learning for epilepsy detection and forecast review: new challenges and perspectives
Authors: Gaidar V.
Published: July 2020

The comparative analysis of machine learning methods has performed to solve the problem of early detection and prediction of epileptic seizures using electroencephalographic signals. Recent studies has shown that it is possible to predict seizures in prior of its physical appearance. Our goal is to present and analyse different approaches of seizure prediction techniques, particulary in machine learning and deep learning. Seizure prediction has made important advances over the last decade, nevertheless it is still a problem to provide steady algorithm of seizure early detection. Also, within individual patients exhibit distinctive dynamics, is it cruicial to find algorithms providing greater clinical utility. This article focuses of the problem of features development from electroencephalography signals in order to provide the accurate pattern recognition techniques for detection and classification of epilepsy seizures in advance. The mathematical model of the algorithms is constructed and quantitative data presented for estimating the methods efficiency.
The role of surface conductivity in electromechanics and electrohydrodynamics of a dielectric drop
Authors: Datsyuk V. , Pavlyniuk O.
Published: July 2020

A new technology of the electric-field manipulation by dielectric particles in dielectric liquids and drops has been developed in the last decades. To simulate electromechanics of microparticles in a weaklyconducting dielectric drop the Taylor's leaky-dielectric model is extended. To achieve this electric-potential distribution inside and outside a weakly-conducting dielectric sphere embedded in a weakly-conducting dielectric in an electric field is determined taking into account the interfacial current. The conventional definition of the total, bulk plus surface, conductance of the sphere is detailed allowing for its dependence on the angular distribution of the external electric field. Technology of microparticles moving over the interface of the drop is based on the application of electrohydrodynamic (EHD) drag and dielectrophoretic (DEP) forces. The surface conductivities of the drop and individual microparticles can have a significant influence on the surface charge and thereby on the DEP and EHD drag forces. Thus, we show that recent explanation of manipulation by microparticles trapped at the interface of a silicone-oil drop immersed in castor oil is misleading. Taking into account the surface conductivity of the microparticles, we find that EHD drag and DEP forces are of the same direction but not opposite at zero or low frequencies as stated previously. Due to the reversal of the DEP force with the field frequency the motion of microparticles turns back. Surface conductivity of the drop can also explain experiments in which the prolate deformation persists after liquids of the drop and ambient medium are interchanged.
Stokes-polarimetry of ultrathin Au and Sn island films
Authors: Yampolskiy A. , Makarenko O. , Lendel V. , Prorok V. , Sharapa A. , Poperenko L.
Published: July 2020

The optical properties of ultrathin Au and Sn islet films, obtained by the methods of magnetron sputtering and thermal evaporation, respectively, are considered in this paper. By measuring the Stokes vector of the beam reflected from the samples, polarized and depolarized radiation components were separated. The conditions of the polarization degree dependence on the surface structure for a series of islet films with different morphologies are analyzed. To determine the morphological structure of the metal layer, methods of atomic force microscopy and resistivity measurement were also employed. The parameters of discontinuous film, obtained by optical and non-optical methods, are compared. It is established that with an increase in the angle of radiation incidence onto the samples, the polarization degree of the reflected beam decreases. Such behavior can be explained by the Mie theory of light scattering by particles. The magnitude of depolarizing action of the samples also depends on the morphology of their surface, correlating with the number of inequalities on it. The applied method of Stokes polarimetry, thus, allows one to obtain additional information on the structure of the surface, which is its advantage.
Modeling of blood microcirculation, heat and mass transfer in human tissues
Authors: Kizilova N. , Korobov A.
Published: July 2020

A mathematical model of the structure of the blood vessels system which provides blood microcirculation in the superficial tissues of human, namely the skin, to provide blood supply as a fluid, which heats / cools, and determines thermoregulation in changes of ambient temperature and overheating / supercooling is proposed. The model is based on data from current studies of the structure of microcirculatory beds based on microCT technologies. The microvascular system is modeled as a fractal binary tree optimized for uniform supply of a nutrient fluid (blood for biological tissues) due to the homogeneous distribution of capillaries, optimal values for diameters, lengths and branching angles in bifurcations of tubes that provide flow distribution with minimal energy costs. The model has been developed to use in computer-based monitoring systems for the planning of physiotherapy procedures for different diseases.
THE PROBLEM OF MEDIA INFLUENCE ON SUICIDES: EVOLUTION OF EXPLANATORY MODELS AND UKRAINIAN REALITIES
Authors: Naydonova L.
Published: July 2020

The problem importance is determined by the global dynamic growth of suicides and the need for special attention to the suicidal tendency among armed people (military personnel, combatants, veterans), especially in the context of media effects during the hybrid war. The dynamics of proposed explanatory models explaining the suicide descriptions by traditional media (periodicals and television) and their impact on vulnerable audience over the 40-year period from the 1980’s to the present has been analyzed. Different methods substantiating such impact have been considered – from the early statistical procedures of correlation analysis to various experiments and longitudinal cohort studies. The historical periods concerning the subject matter and key models explaining the impact of «media suicides» on the audience at different times are singled out. The conformity of explanatory models (suggestive-imitation, media cover, identification, multi-factor) are checked for the analysis of the situation with suicides in Ukraine. A cumulative model is proposed and implemented for analyzing of the media suicide impact, in the context of the war over the past 5 years, on the suicide dynamics for the most vulnerable category of adolescents. It was proposed on the base of secondary analysis of official data of the State Statistics Service of Ukraine on mortality due to self-harm. The most vulnerable category is boys aged of 10–15, which can be considered as the most affected by the media hype about «deadly quests» in 2017. The article proposes a conceptual model of media literacy as a factor supporting a person’s psychological well-being and confronting suicidal tendency growing during the hybrid war. The limitations and prospects for further research, tasks for the improvement of the suicide prevention system in Ukraine are discussed.
SELF-KNOWLEDGE RESOURCE IN PERSONALITY RELATED TO PSYCO-TRAUMATIC SITUATIONS
Authors: Kyrylenko T. , Ivanenko B.
Published: July 2020

The article focuses on the phenomena of psychotrauma and psyco-traumatic situation. A brief analysis of scientific works devoted to the problem of psychological trauma and ways of its overcoming by a person is presented. The main characteristics of the psychological trauma, its features, the relationship with the traumatic situation, criteria of effective overcoming are considered. The questions of individual strategies for overcoming a mental trauma and the main factors contributing to successful coping with the traumatic situation are considered. The article contains an original contemporary empirical study of strategies to overcome psycho-traumatic situations. The results of the psychologist’s work with people experienced a traumatic situation for two years without the post-traumatic stress disorder has been analyzed. In the empirical part of the study, the content of psycho-traumatic situations was singled out. The strategies of «avoidance» and «imposing», features of their manifestation depending on a gender, characteristics of self-analysis, life-based conclusions made by the subjects under the influence of the traumatic situation experience are investigated. The empirical results of new knowledge introspection received in a psycho-traumatic situation are presented; the results were obtained from the respondents analysed consequences of psycho-traumatic situations with written self-analyses according to André Roche. The quantitative results of new knowledge introspection depending on a number of prevailing strategies for experiencing psycho-traumatic situations by men and women are presented. The differences in the self-analysis of the experience of psycho-traumatic situations by men (focusing on the positive consequences of the situation as a whole) and on women (selective emphasis on positive consequences) are presented. The conclusions about the resource of self-knowledge in the experiencing of the situation of psychotrauma by men and women conserning the strategies of avoiding and imposing are formulated.
ILED: Iowa Leadership in Engineering Design
Authors: Turner Ken , Turner Anne , Kaufman Brenda
Published: July 2020

Based on results of a 2018 Iowa Science Teacher Section survey, the Iowa Science Foundation of the Iowa Academy of Science funded a professional development opportunity focused on engineering design (ISF 19–01). A free one–day workshop was created for school districts in Iowa, and the first was held in fall of 2019. During this workshop, teachers learned more about engineering design, experienced engineering design activities from kindergarten through high school levels, and brainstormed facets of engineering design. The day ended with guiding teachers in writing their own engineering design activities. The workshop was successful and well–received according to a post–workshop survey using a five–point rating scale. Comments included “I have a better understanding of how to use engineering design in my classroom” (4.56/5.00), “I was able to make good progress in developing an engineering design activity” (4.67/5.00), and “I would recommend this workshop to friends and colleagues” (4.78/5.00. Participating teachers learned skills that will impact more than 1,100 students, and additional workshops continue to be scheduled.
Liquefaction and Related Ground Failure from July 2019 Ridgecrest Earthquake Sequence
Authors: Zimmaro Paolo , Nweke Chukwuebuka C. , Hernandez Janis L. , Hudson Kenneth S. , Hudson Martin B. , Ahdi Sean K. , Boggs Matthew L. , Davis Craig A. , Goulet Christine A. , Brandenberg Scott J. , Hudnut Kenneth W. , Stewart Jonathan P.
Published: July 2020

The 2019 Ridgecrest earthquake sequence produced a 4 July M 6.5 foreshock and a 5 July M 7.1 mainshock, along with 23 events with magnitudes greater than 4.5 in the 24 hr period following the mainshock. The epicenters of the two principal events were located in the Indian Wells Valley, northwest of Searles Valley near the towns of Ridgecrest, Trona, and Argus. We describe observed liquefaction manifestations including sand boils, fissures, and lateral spreading features, as well as proximate non-ground failure zones that resulted from the sequence. Expanding upon results initially presented in a report of the Geotechnical Extreme Events Reconnaissance Association, we synthesize results of field mapping, aerial imagery, and inferences of ground deformations from Synthetic Aperture Radar-based damage proxy maps (DPMs). We document incidents of liquefaction, settlement, and lateral spreading in the Naval Air Weapons Station China Lake US military base and compare locations of these observations to pre- and postevent mapping of liquefaction hazards. We describe liquefaction and ground-failure features in Trona and Argus, which produced lateral deformations and impacts on several single-story masonry and wood frame buildings. Detailed maps showing zones with and without ground failure are provided for these towns, along with mapped ground deformations along transects. Finally, we describe incidents of massive liquefaction with related ground failures and proximate areas of similar geologic origin without ground failure in the Searles Lakebed. Observations in this region are consistent with surface change predicted by the DPM. In the same region, geospatial liquefaction hazard maps are effective at identifying broad percentages of land with liquefaction-related damage. We anticipate that data presented in this article will be useful for future liquefaction susceptibility, triggering, and consequence studies being undertaken as part of the Next Generation Liquefaction project.
Identifying the gaps in human and veterinary chlamydia vaccine development
Authors: Janse Marga , Trocha Marcela , Fedema Jelle , Claassen Eric , Burgwal Linda Van De
Published: July 2020

Background: Chlamydia infections in humans and animals pose a significant burden on health systems worldwide. While widespread screening, adequate treatment, and prevention programs are helpful to increase awareness and improve screening rates, infection rates are rising. A vaccine is necessary to slow increasing rates, manage negative consequences, and prevent possible antibiotic resistance. We present the current landscape regarding the innovations for commercial vaccine development in a “one-health” context.

Methods: We developed a unique dataset containing data of patent documents intended for human and veterinary use, and clinical trials in order to provide a detailed description of the global chlamydia vaccine developments.

Results: Analysis of patents and clinical trials intended for human use presented a vaccine field that is underdeveloped, with no commercial human chlamydia vaccine available, and two potential candidates in a phase 1 clinical trial. Comparing innovations concerning chlamydia vaccine developments for both human and veterinary patents, it was clear that these fields are very different and independent of each other. The field is small, and certain companies and researchers show repeated interest. Partnerships among applicants and those involved in chlamydia vaccine innovation would be an important step to take towards innovating and developing an effective vaccine.

Conclusions: We have shown that North America is considered, by patent application, to hold the most potential for a chlamydia vaccine, specifically against the Chlamydia trachomatis strain. A new vaccine is likely to be a subunit vaccine with components of the major outer membrane protein antigen.
Evaluation of the feasibility and effectiveness of a health facility-based combined with home-based early childhood development intervention in Siaya County, Kenya: a cluster-randomized control trial
Authors: Kitsao-Wekulo Patricia , Domfouet Hermann P. P. , Onyango Silas , Wanjohi Milka , Sen Debjeet , Frey Matthew , Erhard Loida , Baral Ranju , Obong'o Christopher , Kadenge Oscar , Oyugi Beatrice , Kavithe Rachel , Omedo Dickens , Abubakar Amina , Mwoma Teresa , Kabaka Stewart , Tomlinson Mark , Richter Linda , Engmann Cyril , Kimani-Murage Elizabeth
Published: July 2020

Background: Approximately 250 million (43%) children under five years in low- and middle-income countries are at risk of sub-optimal development. Of these, 67% are found in sub-Saharan Africa due to exposure to multiple risks, including inadequate stimulation at home. In order to promote early childhood development (ECD), an intervention integrating ECD content into routine facility-based health services and supporting ECD policy and advocacy is currently being implemented in Siaya County. In addition, parental counseling on early stimulation is integrated into home-based visits by community health volunteers. We aim to evaluate the intervention’s operational feasibility, effectiveness and cost-effectiveness.

Methods: The study is a cluster-randomized controlled trial using a mixed-methods approach. The study is being conducted in Bondo sub-county in Siaya County. The study has three arms. Arm 1 will receive a health facility-based ECD intervention. Arm 2 will receive the health facility-based ECD intervention combined with home-based ECD counselling. Arm 3 (control) will receive standard care. Six health facilities in each study arm (18 in total) will be randomly selected from wards within the sub-county. We aim to recruit and follow-up 699 mother/caregiver-child dyads, 233 in each arm. Pregnant women are recruited when they visit health facilities during the third trimester. Analysis will involve estimating the effect of the intervention using mixed linear models and the Difference-in-Differences estimator.

Conclusions: The data generated from this study will provide much-needed information for program design and implementation of interventions aimed at promoting ECD in Kenya and other sub-Saharan African countries.

Trial Registration: Current Control Trial is ISRCTN11561283.

 
A systemic review of clinical trials of COVID-19, registered in WHO-ICTRP
Authors: Vyas Suyog , Vyas Kartiki S.
Published: July 2020

In September 2004, International Commission of Medical Journal Editors implemented a dramatic and important policy for the condition of publication of clinical trials. The condition was that clinical trials must be registered in a public trial registry. World Health Organization-International Clinical Trials Registry Platform (WHO-ICTRP) is the globally centralised network composed of primary registries and partner registries along with data providers. COVID-19 is a pandemic and a significant social and economical health burden. In this event numbers of trials have been undertaken by the medical professionals and research workers in every part of the world. Here we have analysed registered clinical trials for the detection, treatment and prevention of COVID-19 to provide a summary of global response w.s.r.to WHO-ITCRP. The objective of this study was to collect the data of registered clinical trials for the therapeutic and preventive measures for COVID-19 which are registered in WHO-ICTRP and analyse global response of COVID-19. WHO-ITCRP database has 20 fields of mapping. Out of these, we have analysed 6 fields of this registry, for this study purpose: public title, scientific title, study type, countries, intervention and primary outcome. Clinical trials are focused on chloroquine, hydroxychloroquine, lopinavir ritonavir combination, Remdesivir, Favipiravir, Tocilizumab and Interferon. Also, it is seen that convalescent plasma therapy is a promising intervention. Observational trials are directed mainly on the clinical features and distinguish COVID-19 from other influenza like illnesses.
Impact of rigorous nursing training and reinforcement on incidence of thrombophlebitis at tertiary care centre
Authors: Purushothaman Suraj , Patel Kinjal P. , Dalal Dhaval N. , Carwal Trupti N. , Gawali Vijaykumar P.
Published: July 2020

Background: Peripheral venous cannulation (PVC) is one of the commonest procedures carried out in hospital.  It allows rapid and accurate administration of medication. However, there is dearth of formal training to nurses There are few studies which has shown benefits of offering formal training to improve clinical practice and patient care.Methods: In view of rising cases of thrombophlebitis, nurses were trained in hand hygiene, patient skin preparation, wearing gloves and aprons, establishing a clean environmental field, using sterile equipment, disposing of contaminated or soiled equipment and linen appropriately, safe disposal of sharps and adherence to universal precautions. Retrospective, observational, single centre study to analyse data of inpatients for 4 years duration was carried out.  This included 2 years data prior to offering nursing training and 2 years post training.Results: There is statistically significant improvement in number of thrombophlebitis event for 2 years prior and 2 years post training.  Total events in 2 years prior to training were 63 which reduced to 22 in later 2 years due to nursing training. A p value was 0.0297. Out of total 87 thrombophlebitis incidences, 40 and 47 incidences in males and females respectively were observed. Mean age for men was 58.39 and mean age for female was 52.62 with SD 27.39 and 22.06 respectively.Conclusions: When nurses were trained in patient assessment, Insertion site selection (prefer hand and forearm; to avoid joints and lower limbs), catheter selection, dwell time, early identification of phlebitis and appropriate corrective measures and compliance with best practice guideline, thrombophlebitis rates drastically reduced.
Influence of sleep in polycystic ovarian syndrome: an ayurvedic appraisal
Authors: Vaishnav Mauli , N. R. Navoday Raju
Published: July 2020

Polycystic ovary syndrome (PCOS) is a complex endocrine disorder which affects the reproductive, metabolic and psychological health of women. Now a day’s incidence rate of PCOS is incising in reproductive age of woman due to sedentary lifestyle and faulty daily routine. Clinical studies indicate that sleep disturbance and disorders including obstructive sleep apnea and excessive daytime sleepiness are more common in the woman with symptoms of PCOS. Despite proof of the high prevalence of sleep disorders in these patients, modification of sleep is not considered as major point for treatment protocol in modern therapeutics. Ayurveda as a holistic medicine lays great emphasis on lifestyle modification under Aahaara (Diet)- Vihaara (Daily regimen)- Oushadha (Medicine) - triad for the prevention and treatment of all diseases. Among Vihaara, Nidra (Sleep) is considered as a very influencing factor in Ayurvedic classics. Balanced sleep at night maintains the health. Disturbance of sleep pattern can lead to Dosha vitiation which hampers regular metabolic activity of the body and leads to various disorders. Hormones affecting metabolism, appetite and blood glucose are regulated with circadian rhythms. When circadian rhythms are out of sync, the body’s metabolic health hampers. Irregular metabolic function disturbs the hormonal cycle including hypothelamo-pitutory-ovarian axis, hypothalamic–pituitary–adrenal function, and so on.  These can ultimately lead to PCOS in reproductive age of women. It seems that if lifestyle modification should be expanded in PCOS patients including sleep hygiene alongside food and exercise positive outcome can be obtained. With this background this study is aimed to determine the importance of sleep hygiene in PCOS from the view of Ayurveda.
Dynamics of change of chlorophyll and carotenoid pigments in leaves of Chrozophora tinctoria species spread in Nakhchivan Autonomous Republic (Azerbaijan Republic)
Authors: Khudaverdiyeva Samira F.
Published: July 2020

Background: The pigment composition and the dynamics of pigment accumulation were investigated to determine the degree of adaptation of Chrozophora tinctoria to the environmental conditions in the Nakhchivan Autonomous Republic (AR) of Azerbaijan Republic.

Methods: The leaves were collected (transects size 5×5 m, in triplicate) and dried with 15-20 pieces, pigments were separated by solvent. The pigment density was determined by the absorption peak on a spectrophotometer, and then the pigment density was calculated.  

Results: The chlorophyll pigments in the dry weight of leaves varied between 2-6 mg and carotenoids 0.8-1.2 mg/g were found. Also, chlorophyll (a-b) pigments increased in 1.2 times, and carotenoids decreased in 3.6 times depending on environmental conditions.

Conclusions: Photosynthetic apparatus of the species actives in all cenosis with response adaptive to changing of environmental conditions depends from the time of leaf collection for the Chrozophora tinctoria species as shown results of researches.
Ensamble e instrumentación de un banco didáctico para pruebas de arranqueenmotores de combustión interna
Authors: Romero-Piedrahita Carlos , Rodriguez-Valencia Andrés , Monroy-Jaramillo Mauricio
Published: July 2020

La medición instantánea de velocidadangular en volantes de inerciase ha usado,entre otras aplicaciones, enpruebas experimentales de motores de combustión interna para diagnosticar fallas, particularmentese ha implementado para evaluarlas curvas de desempeño de motores de arranque y el estado inicial de las baterías. El presente artículose enfoca en el desarrollo de un banco de pruebas didáctico basado en volante para realizar el diagnostico de desempeño de motores de arranquehasta de 3 kW, arrancadoreseléctricosde motores de combustión interna de hasta 3 litros de cilindrada, propios de automóviles comerciales. Se describen las características principales del banco diseñado: elementos mecánicos, estructurales y accesorios; captadores de desplazamiento angular, corriente y voltaje de arranque,sistemas de lectura, tratamiento y presentación de información.Se emplea un sensor inductivo para la detección de la posición angular de un volante de inercia dotado de corona dentada; la señal análoga es convertida a digital y procesada digitalmente en un código escrito en Matlab®. Durante el ensayo delmotor de arranque de prueba, se determina la variación de la potencia eléctrica entregada por éste y la variación de la velocidad angular del sistema de carga (volante) desde su inicio hasta la estabilización. La información experimental adquirida permite construir y analizar los perfiles de comportamiento de velocidad angular, intensidad de corriente, tensión y potencia eléctrica instantáneas. La contrastación,frente a las formas de características de los motores de arranque comerciales, del comportamiento de las señales de voltaje, corriente y potencia consumida del motor de arranque probado en el banco construido, permiten concluir sobre la idoneidad del banco y de la metodología concebida para realizar pruebas didácticas de caracterización y diagnóstico de motores de arranque en el Laboratorio de Máquinas de Combustión Interna de la Universidad Tecnológica de Pereira.
Proceso para la identificación, clasificación y control del comportamiento de familias Ransomware
Authors: Osorio-Sierra Andrés Felipe , Mateus-Hernández Milton Javier , Vargas-Montoya Héctor Fernando
Published: July 2020

Desde mayo del 2017, en donde se registraron diferentes ataques de Ransomwarea escala mundial que afectaron a varias empresas de Europa a causa del WannaCry, ha habido un aumento progresivo entre los años 2018 y 2019 de ataques informáticos que cifran y secuestran los datos, para luego solicitar un rescate por parte de los ciberdelincuentes.Este articulo contiene un análisis de los diferentes métodos para la detección y prevención de malware tipo Ransomware, que afectan principalmente al sistema operativo Windows. Para esto se inició con una caracterización de los diferentes tiposde ransonware, se obtuvieron diversos métodos para la detección y prevención de posibles infecciones y finalmente se crearon familias de controles de acuerdo con el comportamiento del malware, estos controles permiten la reducción de los riesgos de exposición, generando con ello, las recomendaciones pertinentes que pueden ser aplicadas en las organizaciones. En ese sentido, se entrega una introducción alrededor de los conceptos de malware y su ciclo de vida, así mismo, se establece un proceso de medición del impacto con base en la metodología internacional CVSS para la clasificación de las vulnerabilidades, se crea una metodología que permite la clasificación de malware deacuerdo a su nivel de daño, filtrando aquellas con impacto medio y alto, se caracterizaron los métodos de prevención y control, se generaron recomendaciones de controles con base en el impacto de los diferentes tipos de malware y finalmente se entregan las conclusiones
Potencial de irradiación solar para generar electricidad en el departamento del Putumayo de Colombia
Authors: Luna-Carlosama Carlos , Jiménez-García Francy , Moreno-Chuquen Ricardo , Mulcué-Nieto Luis
Published: July 2020

En Colombia el área de las zonas no interconectadas a la red eléctrica corresponde al 50%, en particular, en el departamento del Putumayo hay un bajo índice de cobertura. Por otro lado, el potencial en energía solar es considerado alto, sin embargo, en regiones como el Putumayo, debido a las diferencias geográficas de sus subregiones, se desconoce con exactitud su valor. En esta investigación se determinó el potencial efectivo para la generación eléctrica solar en el Putumayo considerando restricciones técnicas y geográficas a partir de la información de múltiples bases de datos. Se encontró que el potencial efectivo solar más alto se da en la región Amazónica, y el más bajo en la región Andina. Por otro lado, al evaluar el consumo de energía eléctrica de las regiones, se concluye que se puede satisfacer esta necesidad con sistemas fotovoltaicos al producir energía eléctrica de autogeneración y generación distribuida
Impacto de la Revista UIS Ingenierías en la base bibliográfica Scopus: 2013-2018
Authors: Sáenz-Suárez Ivonne , Pertuz-Comas Alberto David
Published: July 2020

En esta nota editorial se presenta un análisis de las citas recibidas por los artículos publicados en la Revista UIS Ingenierías(RUI), desde documentos indexados en la base bibliográfica Scopus, durante el periodo 2013-2018. La información se recolectó mediante búsquedas avanzadas por operadores, clasificación, tratamiento e interpretación estadística de datos. Este análisis permitió identificar el impacto de RUI en la base bibliográfica Scopus y distribución geográfica de los autores que citan a la Revista UIS Ingenierías, desde los documentos indexados en esa base. Los resultados del ejercicio que se muestra en esta carta editorial evidencian que en los últimos años la Revista UIS Ingenieríasse ha ido posicionando como una fuente de difusión del conocimiento científico relevante
Analysis on the Development Feasibility of a High Quality Antibacterial Medical Material
Authors: Zhang Xinyue , Zhang Rongjia , Cao Minen , Yang Tingxuan
Published: July 2020

The wet process antibacterial yarn and wet process. Knitted fabric of flax are made by using wet spinning technology and knitting manufacturing technology of flax, test the main properties of yarn and fabric, the research progress of the application of flax products in medical textiles was reviewed. This paper mainly analyzes the feasibility of flax wet process, antibacterial yarn and flax wet process and knitted fabric as flax wet process antibacterial medical materials from two aspects of strength and knitted structure.
Analysis on the Art Skills of Editing Radio and TV News in the Era of Financial Media
Authors: Wang Siyuan
Published: July 2020

Under the background of the new era, network technology, information technology and new media technology have been applied to various fields, effectively promoting social progress and industry development. In particular, the application of big data, cloud computing and multimedia technology in the radio and television industry not only accelerates the speed of information transmission and increases the number of information dissemination, but also truly realizes information sharing and promotes the sustainable development of the radio and television industry. Under the background of the new era, the information collection and processing technology and editing technology in the radio and television news industry have been improved, which also puts forward new requirements for the editing skills of radio and television news. Based on the author's own news practice, through analyzing the editing skills of radio and television news in the new era, the author puts forward some thoughts and countermeasures to provide useful reference for more radio and television news from the north.
Why Might We Fight? International Resource Conflicts and Water Security in South America
Authors: Bragatti Milton Carlos , Telarolli de Almeida Leite Maria Luísa
Published: July 2020

In a context of accelerated climate change, increasing scarcity, and global population growth, environmentalissues and natural resources have become a matter of heightened concern for international security.Competition for access to and use of scarce natural resources are increasingly part of the nations’ geostrategicpolicies. South America, one of the richest regions in the world in terms of natural resources, especiallywater, attracts the international interest. This article builds up a picture of such water resources and presentsevidence suggesting the urgent need for more effective cooperation among South American states to establishguidelines for the management and defense of the region’s natural wealth.
THE INFLUENCE OF ENDOMETRIOID HETEROTOPIAS ON THE RED BLOOD PARAMETERS
Authors: Ukrainets R. V. , Korneva Yulia Sergeevna
Published: July 2020

Endometrioid heterotopia can have an adverse systemic effect on the organism through erythropoietin synthesis, which can affect erythropoiesis and reflect in blood analysis. The aim of the study was to investigate the effect of endometrioid heterotopia on parameters of red blood. The investigated group included patients with endometrioid heterotopias of various localisations (115 cases), functional ovarian cysts made up the control group (28 cases). Retrospectively, the number of red blood cells, the amount of hemoglobin, and the level of (CA-125) were recorded in the medical histories. The parameters were taken into account both before and after radical surgery. The highest values of the number of red blood cells and hemoglobin are observed in endometrioid ovarian cysts, followed by adenomyosis, endometriosis of the pelvic peritoneum and skin scar, respectively. After surgery, these differences have disappeared. Comparison of the number of red blood cells and hemoglobin before and after surgery revealed significant changes for both parameters in the group of patients with endometriosis, while in the control group the number of red blood cells and the level of hemoglobin did not change significantly. The number of cases with endometrioid ovarian cysts, where the red blood cell count was higher than normal, significantly differed from the control group; on the contrary, with non-endometrioid ovarian cysts, a significantly more frequent decreased number of red blood cells was observed. In addition, red blood counts in patients with endometriosis before surgery had a moderate negative correlation with the level of CA-125 protein.The possible systemic influence of endometrioid heterotopias on erythropoiesis in the form of its stimulation is demonstrated. In non-endometrioid ovarian cysts a significantly more frequent decrease in the number of red blood cells is observed. The reveales pecularities can be used for complex differential diagnostics of ovarian cysts at the preoperative stage due to their easy accessibility and minimally invasive nature.
DETERMINATION OF ANTISPERMAL IGE ANTIBODIES IN WOMEN WITH INFERTILITY AND CHRONIC INFLAMMATORY PELVIC DISEASES
Authors: Khikmatova N. I. , Garib V. F. , Pakhomova J. E. , Garib F. Yu.
Published: July 2020

Personalized therapy for female infertility means determining of immune mechanisms, including allergic sensitization towards sperm antigens. In order to determine antisperm serum IgE antibodies in women with infertility suffering from pelvic inflammatory diseases, the modified Anti-Spermatozoa Antibody protocol was used (ASA Serum ELISA, Demeditec Diagnostisc, Germany). The modification of the protocol is designed to detect only serum antisperm IgE antibodies carrying Fab fragments to sperm antigens. Allergen-specific IgEs to a common panel of 176 respiratory and food allergenic molecules were determined using the MeDALL scientific chip developed as a part of the European project. Forty patients suffering from infertility of inflammatory etiology and 16 practically healthy women of reproductive age were examined. Specific IgE antibodies towards sperm antigens were detected in blood serum in 7/40 (17.5%) patients with infertility. The maximum level of sIgE was 4 times higher than the maximal value of fertile women. No correlation with total IgE was detected. Women with sIgE-ASA complained of burning and itching immediately after coition. Systemic and long-term allergic reactions were not noted. Women with positive sIgE-ASA values were 2 times more likely to suffer from chronic recurrent vaginal dysbiosis. The presence of specific anti-sperm IgE antibodies is likely to have pathogenetic significance in female infertility, and they should be taken into consideration for creating personalized therapy approaches.