bluuebunny/crossref_metadata_2025 huggingface dataset:
Prevent Intravenous Therapy (IV) Contamination by Addition of Magnesium Oxide Nanoparticles to Silicone Rubber
Authors: Braihi Auda Jabbar , Ahmed Jaleel Kareem , Jabbar Rami Sattar
Published: May 2019

Antibacterial material nanocomposites are prepared to manufacture intravenous therapy (IV). These composites prepared by adding Magnesium oxide nano powder (MgO NPs) with a different percent (3, 6, and 9 wt %) to Silicone rubber (SR). The activity of this antibacterial material was inspected against S. aureus and E.coli microorganisms by using Agar Well Diffusion method.

Results showed that the addition of MgO NPs to SiR causes the following enhancement the antibacterial activity against E.coli and S.aureus by 7.1% and 27.1% respectively, increasing tensile strength by 65.5%, increasing the hardness by11.25%, increasing the wear resistance by 84.5%, increasing surface bearing index (Sbi) by 80.5% , increasing in core fluid retention (Sci) by 8.5%,  decreasing surface roughness (Sa) by 65%, decreasing core roughness depth (Sk) by 67% and  enhancement the wettability by decreases contact angle to minimum value.
Expediente
Authors: Editorial Equipe
Published: May 2019

Editora da Revista de Educação Pública: Filomena Maria de Arruda MonteiroEditora Adjunta: Rute Cristina Domingos da PalmaTécnica: Dionéia da Silva TrindadeRevisão de texto: Maria das Graças Martins da SilvaEditoração eletrônica e finalização: Téo de Miranda – Editora SustentávelCapa: obra de Candida BitencourtArte gráfica da capa: Téo de Miranda – Editora SustentávelPeriodicidade: Quadrimestral
Apresentação
Authors: MONTEIRO Filomena Maria Arruda , Da PALMA Rute Cristina Domingos
Published: May 2019

Estudos realizados destacam que muito do que os programas de pós-graduação em Educação têm pesquisado tem como foco principal a educação básica, na perspectiva de compreender os desafios e os avanços da realidade educacional brasileira. A cada dia novos desafios são impostos aos professores no exercício da profissão, fazendo com que precisem lidar com situações para as quais não foram ou não se sentem preparados, como a interculturalidade, a diversidade, as inovações curriculares. Assim, compreender como os professores ressignificam suas práticas pedagógicas a partir de suas experiências e os contextos em que estão inseridos, se faz necessário. As metodologias de pesquisas etnográficas, pesquisa-ação e de narrativas têm possibilitado envolver os professores em atividades reflexivas em torno do fazer docente, processo esse que, ao mesmo tempo em que informa,propicia a formação de todos os envolvidos. Nesta perspectiva, as pesquisas sobre formação de professores têm procurado considerar os diferentes contextos – pessoal, institucional e profissional – em que os profissionais se inserem, buscando compreender como se constituem docentes e como se desenvolvem profissionalmente. Assim, tem sido profícuo aproximá-los da pesquisa, a partir de metodologias em que se realiza a pesquisa com eles – e não apenas sobre eles –, por inseri-los em um movimento de reflexão, de aprendizagens, em que a colaboração entre universidade e escola se faz presente.
Editorial
Authors: Mallén Rivera Carlos
Published: May 2019

México es el tercer país más biodiverso del planeta, por muchas razones es un país grandioso y en términos de recursos naturales, es sorprendente. Sin embargo, por décadas nuestros recursos forestales y los servicios ambientales fueron subvalorados por el gobierno y la sociedad y, en consecuencia, rezagados en las políticas públicas de muchas administraciones. Un ejemplo lamentable de esto fue la existencia del Programa Nacional de Desmontes, en el siglo pasado.

Esta subvaloración basada en el desconocimiento de nuestros recursos naturales respecto a la indiscutible vinculación que tenemos como humanos de sus servicios, unos tan elementales para la vida como el agua, el oxígeno y la regulación del clima condujo a la disminución de oportunidades productivas y un deterioro vigente de la calidad de vida de los dueños de bosque y selvas.
PARTIAL EDENTULISM;
Authors: Kumar Bharat , Kumar Naresh , Ali Shahid , Ahmed Shabir
Published: May 2019

Objectives: The objective of this study was to determine the various patterns of partial edentulism of mandibular arch in patients seen. Study Design: Cross sectional study. Setting: Department of Prosthodontics, Dr Ishrat- Ul -Ebad Khan Institute of Oral Health Sciences Karachi. Period: Six months from July 2013 to December 2013. Materials and Methods: Utilizing consecutive sampling technique, 527 patients were included. Partial edentulism pattern was recorded by visual examination using Kennedy’s classification after applying Applegate’s rules.  Results: In present study class III partial edentulism was the most dominant pattern with class IV being the least in number in mandibular arch. The class III with one modification only involving posterior area was pr-edominant type. As the age of study participants increased, there was decrease in prevalence of class III pattern and increase in class I, class II and class IV pattern. In present study gender had no significant effect on distribution of various Kennedy’s classification, whereas there was statistically significant association between age and pattern of partial edentulism. Conclusion: The Kennedy’s class III was the most common pattern of partial edentulism irrespective of age and gender.
An Improved Image Compression Technique Using EZW and SPHIT Algorithms
Authors: Kadhim Aqeel K. , Merchany Abo Bakir S. , Babakir Ameen
Published: May 2019

Uncompressed form of the digital images are needed a very large storage capacity amount, as a consequence requires large communication bandwidth for data transmission over the network. Image compression techniques not only minimize the image storage space but also preserve the quality of image. This paper reveal image compression technique which uses distinct image coding scheme based on wavelet transform that combined effective types of compression algorithms for further compression. EZW and SPIHT algorithms are types of significant compression techniques that obtainable for lossy image compression algorithms. The EZW coding is a worthwhile and simple efficient algorithm. SPIHT is an most powerful technique that utilize for image compression depend on the concept of coding set of wavelet coefficients as zero trees. The proposed compression algorithm that combined dual image compression techniques (DICT) invest an excellent features from each methods, which then produce promising technique for still image compression through minimize bits number that required to represent the input image, to the degree allowed without significant impact on quality of reconstructed image.

The experimental results present that DICT will improve the image compression efficiency between 8 to 24%, and will result high performance of metrics values.
Modeling Dynamic Background based on Linear Equation
Authors: Rahma Abdul Monem S. , Abd Nabaa Basil
Published: May 2019

Detection moving car in front view is difficult operation because of the dynamic background due to the movement of moving car and the complex environment that surround the car, to solve that, this paper proposed new method based on linear equation to determine the region of interest by building more effective background model to deal with dynamic background scenes. This method exploited the permitted region between cars according to traffic law to determine the region (road) that in front the moving car which the moving cars move on. The experimental results show that the proposed method can define the region that represents the lane in front of moving car successfully with precision over 94%and detection rate 86% and FoM 90%.
IMAGE COMPRESSION BY USING WALSH AND FRAMELET TRANSFORM
Authors: Sultan Nora
Published: May 2019

In this paper, Framelet and Walsh transform are proposed for transformation, and then using arithmetic coding for compress an image. The goal is to achieve higher compression ratio by applying two levels Framelet transform (FLT), and then apply 2D Walsh-Hadamard transform (WHT) on each 8x8 block of the low frequency sub-band, while all other sub-bands are ignored. Experimental results show that the proposed algorithm gets best possible solution for tradeoff between compression ratio (size of image) and quality of compressed image, Peak Signal to Noise Ratio (PSNR). The simulation was carried using MATLAB software package version 2014. In this work, experiments were carried out on the gray scale and colored images
AN EXPERIMENTAL AND NUMERICAL STUDY OF FACTORS INFLUENCING THE SCOUR DUE TO THE COLLISION OF WATER JET IN STILLING BASIN FLOOR
Authors: Al- Mohammed Fadhil , Ali Ali , Abbas Hamid
Published: May 2019

This study based on the laboratory experiments and numerical analysis to study the configuration of the local scour downstream of hydraulic structure result by free water jet. This jet will have a high kinetic energy making it able to transport the sediment particles downstream of the impinging area, thereby forming a scour hole. The purpose of conducting this study was to evaluate the minimum distance of scour hole from the nozzle jet. One hundred and thirty-eight runs were carried out to investigate the local scour downstream the hydraulic structure under clear-water conditions with different discharges, tail water depths, and jet angles. Two types of jets were used, normal jet and dispersion jet. Results indicated that minimum distance of scour increase with increasing densimetric Froude number and jet velocity. The increase in tail-water depth decrease the distance to the scour hole until access to a critical depth at which the scour hole is largest possible after that the distance back to become large when the depth is overstepping the critical value. The optimum jet angle depends on the jet velocity, with a value of 20° for jet discharges 60 and 80 L/min and 40° for jet discharges 100 and 120 L/min. The dispersion jet technique where used to investigate its effects on the scour processes where its observed that the scour hole resulted small than the scour hole from case of normal jet, Also, the numerical simulation was used by (FLOW3D) software program to investigated from the result of the experimental work, the results showed an acceptable agreement with the experimental results with percentage of error equal to (% 6.28).
DEVELOPING A MODEL FOR EVALUATION OF TIRE NOISE ON DIFFERENT TEST PAVEMENT SECTIONS
Authors: Al-Rubaee Rasha , Shubber Ammar , Jabar Hawraa
Published: May 2019

The objective of this study is to develop a model for evaluating tire/ pavement noise of the various in-service pavement sections in Baghdad city. The scope of this work includes field noise measurements for three selected conventional asphalt concrete roads which are (Senaha Street constructed in 2010), Palestine Street (resurfaced in 2012) and Street2 Locality902 (newly resurfaced in 2017) and one concrete Muhammad Al-Kassim (constructed in 1983). The tested section was selected according to AASHTO TP76 which requires the length of the section to be 440 ft. at varying constant speeds such as(20,40,60,80) km/h using two types of tire (235/45R18, 185/65R15) KUMHO tire and at a different temperature
ANALYSIS OF ATMOSPHERIC TURBULENCE EFFECT ON FREE SPACE OPTICAL COMMUNICATIONS IN ILORIN, KWARA STATE, NIGERIA
Authors: E. S. Olukanni , O. A. Olayemi , E. Amao , J. A. Adeyemi
Published: May 2019

This work seeks to statistically analyze the effect of wavelength transmission in free space over Ilorin, Kwara State, Nigeria using existing atmospheric data for wind velocity from Nigeria Meteorological Agency (NiMET). Scintillation attenuation was calculated based on Rytov approximation for wavelengths of 780nm, 850nm, 1250nm and 1550nm.The signal to noise ratio (SNR) for all the wavelengths considered were also analyzed and it was found that wavelength 1550nm is less attenuated and also has a good SNR as compared with the others. Therefore to improve the efficiency of transmission of FSO, the wavelength of 1550 nm must be used.
THE ANALYSIS OF RELIGIOSITY AND COUNTRY OF ORIGIN INFLUENCE TOWARDS PURCHASE INTENTION WITH CONSUMER ATTITUDES AS THE INTERVENING VARIABLE IN KFC PANDANARAN SEMARANG (CASE STUDY IN FE UNISSULA�S STUDENTS)
Authors: Hermanto Edwin
Published: May 2019

This research aims to analyze the influence of religiosity and the county of origin against the purchase intention in KFC Pandanaran Semarang with consumer attitudes as intervening variable. The population in this research is a college student of economic faculty of Islamic University of Sultan Agung. The technique of the sample with a purposive sampling method and incidental sampling.Samples taken as many as 100 collage students, with a research instrument in the form of a questionnaire.Data analysis using SPSS 23.0. The results showed that religiosity and country of origin has a positive and significant effect on consumer attitudes. Country of origin and consumer attitudes has a positive and significant effect on the purchase intention. Religiosity has a negative and significant effect on purchase intention. Consumer attitudes not as intervening variables between religiosity towards purchase intention and between the country of origin towards purchase intention.Keywords: Religiosity, Country of origin, Consumer attitudes, and Purchase intention.
MENGUKUR KESUKSESAN PENGGUNAAN SISTEM INFORMASI ENTERPRISE RESOURCES PLANNING (ERP) TERHADAP KEPUASAN PENGGUNA DAN DAMPAKNYA PADA KINERJA KARYAWAN DI PT UNISEM BATAM
Authors: Rohani Kiki , Hati Shinta Wahyu
Published: May 2019

Tujuan dari penelitian ini adalah untuk mengukur kesuksesan penggunaan sistem informasi Enterprise Resources Planning (ERP) terhadap kepuasan pengguna dan dampaknya pada kinerja karyawan di PT UNISEM Batam. Metode pengumpulan data menggunakan metode kuisioner, metode obervasi, dan metode dokumentasi. Sedangkan untuk analisis data menggunakan metode analisis jalur (path analysis). Hasil dari penelitian ini yaitu pengukuran untuk mengukur tingkat kesuksesan sistem Enterprise Resources Planning (ERP) AIMS dan PORTAL melalui tiga variabel eksogen (Kualitas Sistem Informasi, Kualitas Informasi, dan Kualitas Layanan) melalui variabel intervening (Kepuasan Pengguna) untuk melihat dampaknya pada variabel endogen (Kinerja Karyawan).
ANALISIS STRATEGI E-PROMOTION JASA MAKE-UP ARTIST MELALUI INSTGRAM (Studi Pada Chels Makeup artist di Bandar Lampung)
Authors: Damayanti Damayanti , Ali Suprihatin , Destaia Mediya
Published: May 2019

This study aims to analyze the e-promotion strategy carried out by chels.makeupartist through instragam. . The research method that used  is qualitative research with content analysis approach model and the main data source in this study is Instagram.   The findings in this study are the promotional strategies conducted by chels.makeupartist are social media strategies, especially Instagram. In this social media strategy it contains advertising, publicity and sales promotions for either the services or goods offered. The promotion is done by displaying the portfolio of services that have been done on the Instagram account they have.
ANALISIS STRUKTUR BIAYA PRODUKSI DAN UNIT COST UNTUK PENGENDALIAN BIAYA PRODUKSI
Authors: Mahagiyani Mahagiyani
Published: May 2019

The  high  number  of  Usaha  Kecil  Menengah  (UKM),  Low-Middle  Business,  leads  to  increase  tough competition among them. This competition requires the businessmen to improve efficiency and effectiveness inrunning the business. The purpose of this research is to find out the comparison between production cost structure and unit cost or cost per unit. This research is also aimed at controlling production cost through cost structure analysis, cost control and unit cost control. This is based on production cost accounting which consists of raw material cost, manpower cost, and factory overhead cost. In recording the raw material based on the result of the research. It is necessary to use counting method by applying stock card either FIFO or LIFO. In terms of manpower, cost controlling, which has never been done so far,  is in need to do so. This card functions to monitor the arrival and leaving time of the workers. Depreciation cost has not been included in overhead cost, such as supporting material cost, electricity and rental. The utilization time of production equipment will be implemented to calculate the overhead cost of production basic expense (cost).  Keywords: Production Cost, Cost Component, Production Basic Expenses (Cost), Unit Cost.
PENGARUH KEPEMIMPINAN, MOTIVASI DAN LINGKUNGAN KERJA TERHADAP KINERJA KARYAWAN
Authors: Tarigan Yulinda , Rozzyana Rozzyana
Published: May 2019

Penelitian ini untuk mengetahui pengaruh kepemimpinan, motivasi, dan lingkungan kerja terhadap kinerja karyawan. Penelitian ini menggunakan jenis data penelitian dengan pendekatan kuantitatif dengan analisis data yaitu regresi berganda. Objek penelitian merupakan karyawan yang bekerja di perusahaan oil and gas yang ada di Batu Ampar dengan 170 sampel responden. Hasil yang diperoleh variabel kepemimpinan dan motivasi berpengaruh positif (signifikan) terhadap kinerja karyawan, sedangkan variabel lingkungan kerja tidak memiliki pengaruh terhadap kinerja karyawan. Penelitian selanjutnya diharapkan memilih sampel penelitian tidak hanya perusahaan oli and gas yang terdapat di Batu Ampar saja, akan tetapi seluruh perusahaan yang ada di Batam dan dapat menambah variabel yang lebih mempengaruhi kinerja karyawan disuatu perusahaan. Manfaat penelitian ini untuk penelitian yaitu dapat digunakan sebagai bahan referensi ataupun perbandingan bagi penelitian selanjutnya serta menambah wawasan dan pengetahuan mengenai pengaruh kepemimpinan, motivasi dan lingkungan kerja serta dampaknya terhadap kinerja karyawan.
IMPACT OF INFORMATION TECHNOLOGY INVESTMENT TO FINANCIAL PERFORMANCE ON BANKING SECTOR
Authors: Gunawan Hendra , Serlyna Serlyna
Published: May 2019

This study examines the impact of technology on the performance of financial investment in banking companies listed in Indonesia Stock Exchange to prove its influence on the development of the banking company's financial performance. The data used in this research is secondary data uses financial statements that have been audited. Data analysis technique used is simple regression analysis. Results showed that between investments in information technology affect the company's financial performance. The results of this study illustrate that the company's financial performance would be if the investment in information technology in the company are used effectively and efficiently. This research is important for companies and organizations, in order to better the use or utilization of information technology in the enterprise. The company is only limited to the banking companies listed in Indonesia Stock Exchange, then further research is recommended to add criteria and indicator others that have not been addressed in this study, in addition to subsequent authors can also extend the sample population to another company with a different field such as manufacturing companies.
THE EFFECT OF FINANCIAL RATIO ON FINANCIAL DISTRESS IN PREDICTING BANKRUPTCY
Authors: Supriyanto Joko , Darmawan Arif
Published: May 2019

This study was conducted to investigate Financial Distress in mining companies listed on the Indonesian Stock Exchange (BEI) during the 2011-2014 period using the Altman Z-Score Modification. Total sample that gathered from mining companies is 119 companies, analytical techniques used in this study is the Altman Z-score that consists of four ratios, which are the Net Working Capital to Total Assets (X1), Retained Earnings to Total Assets (X2), Earnings Before Interest and Tax to Total asset (X3), Market Value of Equity to Book Value of Debt (X4.). This test used SPSS 22 to test the hypothesis, the hypothesis testing results are: Net Working Capital to Total Assets has a positive effect on Financial Distress, Retained Earnings to Total Assets has a positive effect on Financial Distress, Earnings Before Interest and Tax to Total Assets has a positive effect on Financial Distress, Book Value of Equity to Total Liabilities has a positive effect on Financial Distress. This study only used mining companies sector, the further research is recommended to use the other sector companies that have larger numbers of samples.
PENGARUH SISTEM PENILAIAN KINERJA DAN KOMPENSASI TERHADAP MOTIVASI KERJA PNS
Authors: Nurmagustini Raja Syafira , Hidayat Hajan
Published: May 2019

Penelitian ini bertujuan untuk mengetahui pengaruh sistem penilaian kinerja dan kompensasi terhadap motivasi kerja pegawai negeri sipil (PNS). Motivasi sebagai variabel dependen dan variabel independen dalam penelitian ini adalah sistem penilaian kinerja dan kompensasi. Sistem penilaian kinerja bagi PNS menggunakan Sasaran Kerja Pegawai (SKP) dan perilaku kerja. Fokus penilitian ini adalah untuk mengetahui sejauh manakah pengaruh sistem penilaian kinerja dan kompensasi terhadap motivasi kerja pegawai dan untuk mengetahui sejauh mana penilaian berdasarkan SKP dan perilaku kerja yang digunakan oleh 10 instansi pemerintah di Kota Batam. Metode yang digunakan yaitu purposive sampling dan mendapatkan hasil 126 sampel staff PNS. Pengumpulan data menggunakan kuesioner yang diambil di 10 instansi pemerintah Kota Batam. Hasil dari penelitian ini adalah sistem penilaian kinerja dan kompensasi berpengaruh terhadap motivasi kinerja. Penelitian ini hanya pada 10 instansi pemerintah Kota Batam oleh karena itu penelitian selanjutnya disarankan menambahkan beberapa instansi lainnnya sehingga mempunyai jumlah sampel lebih banyak. Penelitian ini dapat dijadikan acuan untuk pemerintah dalam meningkatkan motivasi kinerja karyawan.
PENGARUH REFINED ECONOMIC VALUE ADDED TERHADAP RETURN SAHAM PADA PERUSAHAAN NONKEUANGAN YANG TERDAFTAR DI BURSA EFEK INDONESIA
Authors: Lestari Ayu , Oktaria Hanny
Published: May 2019

Penelitian ini bertujuan untuk meneliti pengaruh refined economic value added terhadap return saham. Data yang digunakan adalah data sekunder berupa laporan tahunan perusahaan nonkeuangan yang terdaftar di Bursa Efek Indonesia. Penelitian ini dilakukan pada 86 perusahaan nonkeuangan di Bursa Efek Indonesia. Teknik pengambilan sampel menggunakan purposive sampling. Penelitian ini diuji dengan uji analisis regresi linear, uji F, dan uji koefisien determinasi. Hasil dari penelitian ini adalah model refined economic value added tidak berpengaruh pada return saham. Penelitian ini berkontribusi menambah literatureserta memberikan informasi mengenai pengaruh refined economic value added dan return saham yang dapat digunakan oleh perusahaan dan investor. Penelitian selanjutnya sebaiknya menggunakan variabel independen lain yang mungkin mempengaruhi return saham.
Hemşirelik Öğrencilerinin Meslek Seçimlerini Etkileyen Faktörler
Authors: KÖSE TOSUNÖZ İpek , ESKİMEZ Zehra , ÖZTUNÇ Gürsel
Published: May 2019

Amaç: Bu araştırma, hemşirelik öğrencilerinin meslek seçimlerini etkileyen faktörlerin belirlenmesi amacıyla yapılmıştır.
Yöntem: Tanımlayıcı ve kesitsel olarak yapılan araştırmanın evrenini Hemşirelik bölümünde 2016-2017 öğretim yılı bahar döneminde öğretim gören 1329 hemşirelik öğrencisi oluşturmuştur. Araştırmada örneklem seçimine gidilmemiş ve evrenin tümü örnekleme alınmıştır. Araştırma 776 hemşirelik öğrencisi (katılım oranı %58,3) ile tamamlanmıştır. Araştırma öncesi, etik kurul onayı ve kurum izni alınmıştır. Araştırmanın verileri öğrenci bilgi formu ve hemşirelikte meslek seçim ölçeği ile toplanmıştır. Verilerin analizinde, bağımsız örneklem t testi ve tek yönlü varyans analizi kullanılmıştır. Tanımlayıcı istatistikler olarak ortalama, standart sapma, frekans ve yüzde değerleri verilmiştir.
Bulgular: Öğrencilerin %62,4’ü hemşirelik mesleğini seçme nedenini “İşsiz kalınmayacağını düşünme” olarak belirtmişlerdir. Öğrencilerin hemşirelikte meslek seçim ölçeği puan ortalamaları 50,64±15,30; mesleki uygunluk ve yaşamsal nedenler alt ölçek puan ortalamaları sırası ile 52,67±19,90 ve 46,91±16,40 olarak saptanmıştır. Öğrencilerin meslek seçiminde en önemli etkiye sahip olan ifadenin 77,09±25,37 ortalama puanı ile “Her zaman insanlara yardım etmek istemişimdir” olduğu belirlenmiştir. Öğrencilerin HMSÖ puan ortalamaları ile sınıf, cinsiyet, mesleği isteyerek seçme, tercih sırası, toplumun mesleğe bakış açısına ilişkin görüşleri arasında istatistiksel olarak anlamlı bir fark olduğu saptanmıştır (p<0,05).
Sonuç: Öğrencilerin hemşireliği seçmelerindeki en büyük faktörün istihdam olanağı olduğu, mesleki uygunluk alt ölçek puan ortalamalarının yaşamsal nedenlerden daha etkili olduğu belirlenmiştir.
Pozitif Doğum Deneyimi İçin İntrapartum Bakım Modeli: Dünya Sağlık Örgütü Önerileri
Authors: YILDIZ Hatice
Published: May 2019

Doğum süreci (intrapartum süreç), kadınların ve bebeklerin hayatta kalması için kritik öneme sahiptir. Çünkü, intrapartum komplikasyonlar ortaya çıktığında hem kadın hem de bebek için mortalite ve ciddi morbidite riski artmaktadır. Günümüzde, dünyanın birçok yerinde daha fazla sayıda kadın sağlık kurumlarında doğum yapmakta ancak çoğu yerde hala düşük kaliteli sağlık hizmeti almakta ve bu durum istenen sağlık sonuçlarına ulaşılmasını engellemektedir. Tüm bu gerekçeler ve intrapartum bakım konusundaki çözülemeyen sorunlar nedeniyle Dünya Sağlık Örgütü, travay ve doğum sırasındaki hizmet sunumuna temel yaklaşımın yeniden düşünülmesi ve intrapartum bakımın tekrar ele alınması gerektiğini belirtmektedir. Bu makale, yeni intrapartum bakım yaklaşımını gündeme getirmek, Dünya Sağlık Örgütünün 2018 yılına ait intrapartum bakım önerilerini sunmak ve bu bağlamda konuyla ilgili farkındalığın artmasına ve bu önerilerin kliniğe yansımasına katkı sağlamak amacıyla kaleme alınmıştır.
Theoretical Prediction of Thermophysical Properties of Waste Beef Tallow Biodiesel
Authors: Srinivasan Gokul Raghavendra , Jambulingam Ranjitha
Published: May 2019

In this present study, simple linear equations were developed for predicting the thermo-physical properties of beef tallow biodiesel by considering their molecular weight and number of double bonds as two independent variables. Interestingly, molecular weight signifies as a function of carbon chain length and number of carbon molecules in it whereas numbers of double bond signifies the degree of unsaturation.
Gravity and Entanglement
Authors: Lobo Matheus Pereira
Published: May 2019

In the realm of microscience, this is a minimalist article exploring the relation between gravity and entanglement in a heuristic fashion.
Glutaraldehyde: A review of its fixative effects on nucleic acids, proteins, lipids, and carbohydrates
Authors: McKenzie Andrew Thomas
Published: May 2019

Tissue banking methods such as brain banking often face a trade-off between morphological and molecular preservation. For example, cryopreservation is preferred for subsequent molecular assays, while fixation by aldehyde crosslinking is commonly used for microscopy. Among aldehyde fixatives, formaldehyde is often considered better for immunohistochemistry, while glutaraldehyde is often considered better for electron microscopy. However, it is unclear whether morphological versus molecular preservation trade-offs reflect fundamental biology or technology limitations. As a window into this discussion, in this narrative review, I evaluate the literature regarding the effects of glutaraldehyde on molecular preservation, with an emphasis on nervous system tissue. Available evidence suggests that crosslinking with glutaraldehyde has minimal direct effects on most molecular features, with a few critical exceptions such as protein conformation. On the other hand, glutaraldehyde fixation frequently fails to retain non-directly crosslinked molecules such as lipid and carbohydrate species during subsequent dehydration steps. Further, as a result of probe diffusion limitations or strong covalent interactions with glutaraldehyde, many molecules can be more difficult to visualize or otherwise measure in tissue fixed with glutaraldehyde. As a practical guide for investigators that are considering using glutaraldehyde, I also point out representative molecular assays that have been performed in tissue fixed with glutaraldehyde, and how this set of assays could be improved and expanded in the future.
Sustainable human behaviours for combating sixth mass extinction
Authors: Mandal Fatik Baran
Published: May 2019

Background extinction is a natural phenomenon. Anthropogenic biodiversity loss has been addressed from the various view points. The debate is continuing to identify the root cause of the anthropogenic mass extinction, also called the sixth extinction. The present communication discusses various anthropogenic drivers of the biodiversity loss and explains the ongoing sixth mass extinction using Garrett Hardin's “the tragedy of the commons”. Such explanations provide options for policy makers and for us to save the precious biodiversity of our planet. It has been demonstrated that presently we share about one third of the Net Primary Productivity which must be reduced through reducing our food consumption and by reducing our utilization of energy. Promotion of sustainable human behaviours to ameliorate the problem of anthropogenic extinction or the sixth extinction has been discussed in the light of recent findings from neurobiology and molecular biology. Biodiversity conservation through providing benefit to the people may be effective conservation strategies which would save the interest of human civilizations as well as other life forms on the earth.
Getting Started Creating Data Dictionaries: How to Create a Shareable Dataset
Authors: Buchanan Erin Michelle , Crain Sarah E , Cunningham Ari L. , Johnson Hannah Rose , Stash Hannah Elyse , Papadatou-Pastou Marietta , Isager Peder Mortvedt , Carlsson Rickard , Aczel Balazs
Published: May 2019

As researchers embrace open and transparent data sharing, they will need to provide information about their data that effectively helps others understand its contents. Without proper documentation, data stored in online repositories such as OSF will often be rendered unfindable and unreadable by other researchers and indexing search engines. Data dictionaries and codebooks provide a wealth of information about variables, data collection, and other important facets of a dataset. This information, called metadata, provides key insights into how the data might be further used in research and facilitates search engine indexing to reach a broader audience of interested parties. This tutorial first explains the terminology and standards surrounding data dictionaries and codebooks. We then present a guided workflow of the entire process from source data (e.g., survey answers on Qualtrics) to an openly shared dataset accompanied by a data dictionary or codebook that follows an agreed-upon standard. Finally, we explain how to use freely available web applications to assist this process of ensuring that psychology data are findable, accessible, interoperable, and reusable (FAIR; Wilkinson et al., 2016).
A Portal into Mémoires d'Hadrien
Authors: Zein Laila Fariha , Setiawan Adib Rifqi
Published: May 2019

Mémoires d'Hadrien (English: Memoirs of Hadrian), Marguerite Yourcenar's masterpiece, is a fascinating blend of facts and fiction. We provide a resource for those who are new to elaborations of the Mémoires d'Hadrien, author’s biography in short, including a glance of writing process, brief synopsis, and list of quotation for further explorations.
Implementasi program supervisi pendidikan disekolah SM3T diMentawai
Authors: Gusrinda
Published: May 2019

Tujuan pendidikan nasional akan tercapai saat semua aspek pendudkunng dalam pendidikan terlaksana dengan sebagaimana mestinya. Pelaksanaan berbagai program yang ada dalam dunia pendidikan harus sesuai dengan aturan dan ketentuan yang berlaku. Program dalam supervisi pendidikan menjadi salah satu pendukung terwujudnya tujuan pendidikan nasional. Adanya supervisi pendidikan dan berbagai program supervisi pendidikan disekolah belum merata mengimplementasikan programnya. Sekolah yang dikategorikan sebagai sekolah 3T (terluar, tertinggal dan terbelakang). sebagai salah satu pembahasan yang manarik untk membahas implementasi program suprvisi pendidikan disekolah. Pendidikan di Indonesia masih belum merata. Dengan wilayah Indonesia yang luas dari sabang sampai merauke mengharuskan pendidikan indonesia yang terkategori 3T sering mengalami ketertinggalan dama berbagai hal dalam dunia pendidikan. Diprovinsi Sumatera Barat terdapat daerah kepulauan yang pendidikannya dikategorikan masih rendah dan termasuk kedalam sekolah 3T. Akses yang cukup sulit menuju pulau ini menjadi kendala dalam pendistribusian berbagai layanan pendidikan. Budaya masyarakat mentawai dan jarak rumah dengan sekolah yang jauh menjadi permasalah pokok dalam pendidikan dimentawai ini. Dengan berbagai kendala yang ada program dari sekolah termasuk proggram supervisi pendidika perlu dibahas secara lebih mendalam untuk menemukan pokok permasalahannya untuk dapat dicarikan solusi terbaik .
Research Methods Information Technology
Authors: Setiyani Lila
Published: May 2019

Buku ini berisi tentang panduan dalam melakukan penelitian dalam bidang teknologi informasi
Supervisi akademik dalam peningkatan profesional guru
Authors: ramadhani putri
Published: May 2019

Supervisi akademik sangat penting dilakukan oleh kepala sekolah dalam rangka meningkatkan kemampuan profesional guru. Profesi guru diselenggarakan melalui pengembangan diri yang dilakukan secara demokratis, berkeadilan, tidak diskriminatif, dan berkelanjutan dengan menjunjung tinggi hak asasi manusia, nilai keagamaan, nilai kultural, kemajemukan bangsa, dam kode etik profesi. Salah satu program yang dapat diselenggarakan dalam rangka pemberdayaan guru adalah supervisi akademik. Supervisi akademik merupakan upaya membantu guru – guru mengembangkan kemampuanya mencapai tujuan pembelajaran. Guru akan bekerja secara profesional apabila ia memiliki kompetensi yang memadai. Maksudnya adalah seorang guru akan bekerja secara profesional apabila ia memiliki kompetensi secara utuh. Seseorang tidak bisa bekerja secara profesional apabla ia hanya memenuhi salah satu kompetensi diantara sekian kompetensi yang dipersyaratkan.
Development and validation of the Eyewitness Metamemory Scale
Authors: Saraiva Renan Benigno , van Boeijen Inger Mathilde , HOPE LORRAINE , Horselenberg Robert , SAUERLAND Melanie , van Koppen Peter
Published: May 2019

Metamemory can be defined as the knowledge about one’s memory capabilities and about strategies that can aid memory. In this paper, we describe the development and validation of the Eyewitness Metamemory Scale (EMS), tailored specifically for use in face memory and eyewitness identification settings. Participants (N = 800) completed the EMS and other measures on general metamemory. Results from exploratory and confirmatory factor analysis revealed good factorial validity, internal consistency, and content validity. The EMS items emerged into three distinct factors: memory contentment, memory discontentment and memory strategies. The EMS is a brief and easily administrable questionnaire that might be used to assess self-ratings of face recognition capacity and use of strategies to encode faces.
Estimating Time: Comparing the Accuracy of Estimation Methods for Interval Timing
Authors: Damsma Atser , Schlichting Nadine , van Rijn Hedderik , Roseboom Warrick
Published: May 2019

In interval timing experiments, motor reproduction is the predominant method used when participants are asked to estimate an interval. However, it is unknown how its accuracy, precision and efficiency compare to alternative methods, such as indicating the duration by spatial estimation on a timeline. In two experiments, we compared different interval estimation methods. In the first experiment, participants were asked to reproduce an interval by means of motor reproduction, timeline estimation, or verbal estimation. We found that, on average, verbal estimates were more accurate and precise than line estimates and motor reproductions. However, we found a bias towards familiar whole second units when giving verbal estimates. Motor reproductions were more precise, but not more accurate than timeline estimates. In the second experiment, we used a more complex task: Participants were presented a stream of digits and one target letters and were subsequently asked to reproduce both the interval to target onset and the duration of the total stream by means of motor reproduction and timeline estimation. We found that motor reproductions were more accurate, but not more precise than timeline estimates. In both experiments, timeline estimates had the lowest reaction times. Overall, our results suggest that the transformation of time into space has only a relatively minor cost. In addition, they show that each estimation method comes with its own advantages, and that the choice of estimation method depends on choices in the experimental design: for example, when using durations with integer durations verbal estimates are superior, yet when testing long durations, motor reproductions are time intensive making timeline estimates a more sensible choice.
Event conjunction: How the hippocampus integrates episodic memories across event boundaries
Authors: Griffiths Benjamin James , Fuentemilla Lluís
Published: May 2019

Our lives are a continuous stream of experience. Our episodic memories, however, have a definitive beginning, middle and end. Theories of event segmentation suggest that salient changes in our environment produce event boundaries which partition the past from the present and, as a result, produce discretised memories. However, event boundaries cannot completely discretise two memories; any shared conceptual link will eagerly integrate these memories. Here, we present a new framework inspired by electrophysiological research that resolves this apparent contradiction. At its heart, the framework proposes that hippocampal theta-gamma coupling maintains a highly abstract model of an ongoing event and serves to encode this model as an episodic memory. When a second but related event begins, this theta-gamma model is rapidly reconstructed within the hippocampus where new details of the second event can be appended to the existing event model. The event conjunction framework is the first electrophysiological explanation of how event memories can be formed at, and integrated across, event boundaries.
A Roadmap for Computational Communication Research
Authors: van Atteveldt Wouter , margolin drew , Shen Cuihua , Trilling Damian , Weber René
Published: May 2019

Computational Communication Research (CCR) is a new open access journal dedicated to publishing high quality computational research in communication science. This editorial introduction describes the role that we envision for the journal. First, we explain what computational communication science is and why a new journal is needed for this subfield. Then, we elaborate on the type of research this journal seeks to publish, and stress the need for transparent and reproducible science. The relation between theoretical development and computational analysis is discussed, and we argue for the value of null-findings and risky research in additive science. Subsequently, the (experimental) two-phase review process is described. In this process, after the first double-blind review phase, an editor can signal that they intend to publish the article conditional on satisfactory revisions. This starts the second review phase, in which authors and reviewers are no longer required to be anonymous and the authors are encouraged to publish a preprint to their article which will be linked as working paper from the journal. Finally, we introduce the four articles that, together with this Introduction, form the inaugural issue.
Dynamic Immersive Visualisation Environments: Enhancing Pedagogical Techniques
Authors: North Max M. , North Sarah M
Published: May 2019

As the speed of technical and scientific innovation accelerates past the speed at which humans can learn, the need for innovative pedagogical environments and techniques, such as immersive visualization environments, becomes essential and apparent. The primary purpose of this research is to explore the effectiveness immersive visualization environments may provide in combination with rich resources available on the Internet. An immersive visualization environment was designed and developed, and then an experimental research model was considered and conducted accordingly. Collected data were subjected to appropriate statistical analysis. The results showed a statistically significant difference in pedagogical outcomes when using an immersive visualization environment compared with traditional educational techniques. Immersive visualization environment models and experiments showed significant improvement in the effectiveness and efficiency of pedagogical techniques, enhancing the learning and teaching of abstract and complex computing concepts.
An Investigative Analysis of the Properties of Severely Segregated A441 Bridge Steel
Authors: Urzendowski Michael A. , Worzala Frank J.
Published: May 2019

In 1979, during a routine bridge inspection, a fatigue crack was discovered in the top flange plate of one tie girder in a tied arch bridge crossing the Mississippi River. Metallographic analysis indicated a banding or segregation problem in the middle of the plate, where the carbon content was twice what it should have been. Based on this and results of ultrasonic testing, which revealed that the banding occurred in 24-ft lengths, it was decided to close the bridge and replace the defective steel. The steel used in the construction of this bridge was specified as ASTM A441, commonly used in structural applications. Testing showed an increase in hardness and weight percent carbon and manganese in the banded region. Further testing revealed that the area containing the segregation and coarse grain structure had a lower than expected toughness and a transition temperature 90 deg F higher than specified by the ASTM standards. The fatigue crack growth rate through this area was much faster than expected. All of these property changes resulted from increased carbon levels, higher yield strength, and larger than normal grain size.
Harvard Bridge Eyebar Failures
Authors: Brodrick Ronald F.
Published: May 2019

The century-old Harvard bridge spans the Charles River between Boston and Cambridge. About half of the 23 spans are suspended by wrought iron eyebars. Recent failures of some of these eyebars were examined. The primary cause of failure was the seizure of the joints at the eyebar pin locations as a result of the intrusion of water and salt, and the consequent heavy corrosion of the joint. The seizure of these joints led to high edgewise bending stress in the bars as the bridge underwent thermal movement. The cracking was enhanced by the presence of the corrosive medium so that the cracks were initiated and caused to grow by some combination of corrosion fatigue and stress-corrosion cracking, the former probably being predominant.
Intercrystalline Corrosion of Welded Stainless Steel Pipelines in Marine Environment
Authors: Mor Emanuele , Traverso Eugenio , Ventura Giovanna
Published: May 2019

The defects observed along weldings of stainless steel pipelines employed in marine environments were evidenced by metallographic and electrochemical examination. A compilation of cases on the effect of defective weldings, in addition to improper choice of stainless steel for water pipelines, lead to the conclusion that intercrystalline corrosion in steels involved precipitation of a surplus phase at grain boundaries. Intercrystalline corrosion in austenitic stainless steels due to precipitation of chromium carbides during conditions generated due to welding and ways to avoid the precipitation (including reduction of carbon content, appropriate heat treatment, cold work of steel, reduction of austenitic grain size and stabilizing elements) were described. The presence of microcracks due to highly localized heat concentrations with consequent thermal expansion and considerable shrinkages during cooling was investigated. The specimens were taken from various sources including transverse and longitudinal welding seam, sensitized areas and it was concluded appropriate material selection with respect to medium could control some corrosion processes.
Broken Structural Bolt
Authors: Naumann Friedrich Karl , Spies Ferdinand
Published: May 2019

Two bolts from the stressed structure of a church building that had broken during stressing were examined to establish the cause of fracture. The fracture of one of the first bolt occurred in a double-vee groove weld whose root was not completely welded. The second bolt had cracked outside of the weld seam closely under the head. Neither one had been particularly deformed before fracture. The composition of the head pieces corresponded approximately to manganese steel (Material No. 1 0845), a weldable construction steel with increased yield point and strength, while the shafts were made from Cr-Mo steel (Material No. 1.7225) according to DIN 17200. It was found that the bolts were not made from a suitable alloy steel, but were welded together from two unsuitable steels, one of which lacked sufficient strength. The austenitic weld seams showed hot tears and were not welded through to the root. Also, the pieces were not preheated before welding, so that stress cracks occurred in the transition zones. The second bolt was overstressed during the impact caused by the breaking of the first bolt.
Wire Fractures in Suspension Cables of a Twisted Cable Suspension Bridge
Authors: Friedrich Karl Naumann , Spies Ferdinand
Published: May 2019

During construction of a river bridge with 80 twisted cables, one or more fractures were found in each of 21 wires of 18 cables before assembly. All were located at the outside wrapping whose Z-profile wires were galvanically zinc-coated. It was suspected that hydrogen played a role during crack formation, and that it penetrated during pickling or galvanizing. This supposition was confirmed also by the fact that the wire fractures were not observed during cable winding, but only subsequently to it, and therefore seemed to have appeared only after a certain delay.
Brittle Fracture Leading to Failure of a Bridge Section
Authors: Czyzewski Harry
Published: May 2019

A large crack developed at a girder-truss joint area of the Fremont bridge in Portland, OR, on 28 Oct 1971. It occurred during a positioning procedure involving a junction piece welded to a girder, starting as a brittle fracture and terminating in plastic hinges in the girder web welds. The arch rib top plate, as it met the main girder, formed a composite beam of A588/A36 composition. Investigation showed the original design of the failed component called for an angle of high geometric stress concentration (90 deg with no radius) in a region of substantial transverse weld joints. While the material met chemical and mechanical property requirements, tests showed it had low fracture toughness and critical-sized flaws oriented normal to the principal stress in the failed junction piece. Fabrication procedures resulted in high residual stresses and a metallurgical notch at the radius in the junction piece. Stresses induced during jacking (the procedure used to raise bridge components into position) applied the stresses in the critical radius that triggered the cracking.
Forensic Engineering: A Case Study
Authors: Dobson Wilson G. , Dilloff Neil J. , Gatslick Harold B.
Published: May 2019

In 1975, a manufacturer was awarded a contract to produce modular air-traffic control towers for the U.S. Navy. The specifications called for painted steel siding, but the manufacturer convinced the Navy to substitute aluminum-bonded-to-plywood panels that were provided by a supplier. In less than one year, the panels began to delaminate and the aluminum began to crack. It was found that the failure was the result of chloride-induced intergranular corrosion caused by chemicals in the adhesive and excessive moisture in the wood introduced during manufacturing.