bluuebunny/crossref_metadata_2025 huggingface dataset:
Optimisation of DNA Extraction from Individual Sand Flies for PCR Amplification
Authors: Caligiuri Lorena G. , Sandoval Adolfo E. , Miranda Jose C. , Pessoa Felipe A. , Santini María S. , Salomón Oscar D. , Secundino Nagila F. C. , McCarthy Christina
Published: December 2018

Numerous protocols have been published for extracting DNA from phlebotomines. Nevertheless, their small size is generally an issue in terms of yield, efficiency, and purity, for large-scale individual sand fly DNA extractions when using traditional methods. Even though this can be circumvented with commercial kits, these are generally cost-prohibitive for developing countries. We encountered these limitations when analysing parasite infection in Lutzomyia spp. by PCR [1] and, for this reason, we evaluated various modifications on a previously published protocol ([2] and Acardi personal communication). The most significant variation was the use of a different lysis buffer [3] to which added Ca2+ (buffer TESCa), because this ion protects proteinase K against autolysis, increases its thermal stability, and could have a regulatory function for its substrate-binding site [4]. Individual sand fly DNA extraction success was confirmed by amplification reactions using internal control primers that amplify a fragment of the cacophony gene [5,6]. To the best of our knowledge, this is the first time a lysis buffer containing Ca2+ has been reported for the extraction of DNA from sand flies.
Fluid-Structure Interaction in Abdominal Aortic Aneurysms: Effect of Haematocrit
Authors: Stergiou Yorgos G. , Kanaris Athanasios G. , Mouza Aikaterini A. , Paras Spiros V.
Published: December 2018

The Abdominal Aortic Aneurysm (AAA) is a local dilation of the abdominal aorta and it is a cause for serious concern because of the high mortality associated with its rupture. Consequently, the understanding of the phenomena related to the creation and the progression of an AAA is of crucial importance. In this work the complicated interaction between the blood flow and the AAA wall is numerically examined using a fully coupled Fluid-Structure Interaction (FSI) method. The study investigates the possible link between the dynamic behaviour of an AAA and the blood viscosity variations attributed to the haematocrit value, while it also incorporates the pulsatile blood flow, the non-Newtonian behaviour of blood and the hyperelasticity of the arterial wall. It was found that blood viscosity has no significant effect on von Mises stress magnitude and distribution, whereas there is a close relation between the haematocrit value and the Wall Shear Stress (WSS) magnitude in AAAs. This WSS variation can possibly alter the mechanical properties of the arterial wall and increase its growth rate or even its rupture possibility. The relationship between haematocrit and dynamic behaviour of an AAA can be helpful in designing a patient specific treatment.
Fluid Flow Turbulence in the Proximities of the Metal-Slag Interface in Ladle Stirring Operations
Authors: Calderón-Hurtado F.A. , Morales R.D. , Chattopadhyay K. , García-Hernández S.
Published: December 2018

Three-phase interactions (metal-slag-argon) in ladle stirring operations have strong effects on metal-slag mass transfer processes. Specifically, the thickness of the slag controls the fluid turbulence to an extent that once trespassing a critical thickness, increases of stirring strength have not further effects on the flow. To analyze these conditions, a physical model considering the three phases was built to study liquid turbulence in the proximities of the metal-slag interface. A velocity probe placed close to the interface permitted the continuous monitoring and statistical analyses of turbulence. The slag-eye opening was found to be strongly dependent on the stirring conditions, and the mixing times decreased with thin slag thicknesses. Slag entrainment was enhanced with thick slag layers, and high flow rates of the gas phase. A multiphase model was developed to simulate these results finding a good agreement between experimental and numerical results.
Climate Variability and Dengue Hemorrhagic Fever in Surabaya, East Java, Indonesia
Authors: Tang Sandra Choi Ning , Rusli Musofa , Lestari Pudji
Published: December 2018

Dengue hemorrhagic fever is an arboviral infectious disease that has occurred frequently as an extraordinary event due to its fast spread and lethal potential in Indonesia. The vector Aedes aegypti is sensitive to climate variability. This study determines the relationship between climate variability and dengue hemorrhagic fever in Surabaya, East Java, Indonesia from 2009 to 2017. This study used the monthly dengue hemorrhagic fever incidence obtained from the Surabaya Health Office and the monthly climate variability parameters (average temperature, rainfall, humidity) obtained from the Indonesian Agency for Meteorology, Climatology and Geophysics and website www.worldweatheronline.com. Data analysis was done using One-Sample Kolmogorov Smirnov Test and Spearman non-parametric correlation test. The results showed a correlation between all three climate variability parameters with dengue hemorrhagic fever incidence (average temperature p<0.05, r=-0.603; rainfall p<0.05, r=0.407; humidity p<0.05, r=0.7). Average temperature is negatively correlated to dengue hemorrhagic fever incidence, while rainfall and humidity are positively correlated to dengue hemorrhagic fever incidence. This study shows preliminary evidence on the correlation of climate variability and dengue hemorrhagic fever in Surabaya, East Java, Indonesia.
EVALUASI NUTRISI PERBEDAAN RASIO DEDAK PADI DAN AMPAS BIR DITINJAU DARI NILAI TDN RANSUM DOMBA LOKAL JANTAN
Authors: Saputro Thomas , Widyawati Susi Dwi , Suharto Suharto
Published: December 2018

This study aimed to determine the effect of rice bran (DP) and industrial waste beer or beer dregs (AB) with different ratios on TDN local sheep ration and to know the optimal level of provision. Sheep were used in this study were male local sheep weighing 15 kg ± 1.5 kg as much as 12 heads. Treatment ration consists of forage and concentrates with a ratio of 60%: 40% (in DM) in the form of grass king, DP and AB. The design used in this study is a Completely Randomized Block Design (RCBD) with three treatments and four replications. Treatment applied is P1 = 60% Grass King + 29% DP + 9% AB + 2% Premix, P2 = 60% Grass King + 19% DP + 19% AB + 2% Premix, P3 = 60% Grass King + 9 % DP + 29% AB + 2% Premix. Variables measured are nutrients (crude protein = PK, extract ether = LK, crude fiber = SK and Nitrogen free extract = BETN) can be digested. The results showed that PKdd and LKdd strongly influenced (P <0.01) by the ratio of DP and AB. The use of DP and AB ratio of 19%: 19% and 9% DP AB : 29% highly significant to increase PKdd and LKdd (PK ss: 6.71 vs 7.64; 8.12 and the LKdd: 4:07 vs 4:27; 4:36). While carbohydrates are composed of SKdd and BETNdd did not influenced by differences in the ratio of DP and AB. The use of rice bran and the dregs of beer at local male sheep give the best TDN value at the level of 19% and 19% rice bran and industrial waste beer or beer dregs.
Nutrient content evaluation of dried poultry waste urea molasses block (DPW-UMB) on In-vitro analysis
Authors: Adli Danung Nur , Sjofjan Osfar
Published: December 2018

The research purpose was to determine nutrient content of dried of poultry waste urea molasses block (DPW-UMB). The research method was used completely randomized design with 3 treatments and 5 replicates. The treatments used for research were T1 (10% manure of laying chicken and 25% molasses), T2 (15% manure of laying chicken and 30% molasses), and T3 (20% manure of laying chicken and 30% molasses). The data analysis was the analysis of variance (anova) and continued by Duncan Multiple Range Test. The results showed that treatments has significantly difference (P<0.01) on dry matter, crude protein, and ash. It could be concluded that dpw-umb contained sufficient levels of nutrients. it could be used as feedstuff for ruminants for supplementation with the required nutrients.
Total Knee Arthroplasty in Patients with Familial Patellar Absentia Syndrome: A 40-Year Update
Authors: Khaimov Mikhail , Fakhoury Jordan , Karim Farhan , Bitterman Adam , Alpert Scott
Published: December 2018

Case:

Isolated patella absentia is an extremely rare phenomenon, with only a few published cases and even fewer follow-up reports. Nearly 40 years after the initial presentation of 2 brothers with bilateral congenital absence of the patella and the publication of a case report, we report the clinical and radiographic findings of their subsequent tibiofemoral osteoarthritis, which was treated with bilateral total knee arthroplasty.

Conclusion:

Understanding the biomechanical complications associated with congenital absence of the patella as it relates to a stable knee is vital; in the case of degenerative changes, total knee arthroplasty appears to provide a long-term solution for these patients.
Double-Layered Lateral Meniscus Including a Ring-Shaped Accessory Meniscus
Authors: Ahn Tae Young , Kim Hui Taek , Park Yong Geon
Published: December 2018

Case:

We report the rare case of a double-layered lateral meniscus that was comprised of a normal meniscus and a ring-shaped accessory meniscus. An 11-year-old boy presented with left knee pain, and magnetic resonance imaging initially was interpreted as showing a horizontal meniscal tear. However, arthroscopic exploration revealed a double-layered meniscus. A superior accessory meniscus was fused with the inferior normal meniscus at the posterior horn and had more mobility compared with the normal meniscus. The symptoms improved substantially after resection of the superior accessory meniscus. The patient returned to sports at 4 months postoperatively; at 15 months postoperatively, radiographs demonstrated no evidence of degenerative changes.

Conclusion:

A double-layered lateral meniscus that includes a ring-shaped accessory meniscus is a rare abnormality that can be corrected arthroscopically by resection of the accessory meniscus.
Management of Long-Term Complications in the Setting of Lateral Meniscal Deficiency After Saucerization of a Discoid Lateral Meniscus in an Adolescent Patient
Authors: Smith Ryan A. , Vandenberg Curtis D. , Pace J. Lee
Published: December 2018

Case:

A 14-year-old adolescent with bilateral discoid menisci who had previously undergone discoid meniscal saucerization presented with pain and mechanical knee symptoms bilaterally. She had a torn left discoid lateral meniscus, a right lateral meniscal deficiency with an associated osteochondral defect, and valgus collapse of the right femur. She underwent successful repair of the left discoid meniscus as well as a femoral osteotomy, a meniscal transplant, and an osteochondral allograft transplantation in the right knee.

Conclusion:

New treatment paradigms following initial interventions for discoid menisci are discussed. Patients may benefit from longer follow-up after discoid meniscal surgery, and providers should consider joint-preserving techniques early in the setting of meniscal deficiency.
Acute Radial Nerve Repair with Humeral Shaft Shortening and Fixation Following a Closed Humeral Shaft Fracture
Authors: Martin Anthony R. , Gittings Daniel J. , Levin L. Scott , Donegan Derek J. , Gray Benjamin L.
Published: December 2018

Case:

A 65-year-old woman sustained a closed segmental humeral shaft fracture with a complete radial nerve palsy. Radial nerve neurotmesis was found during acute surgical exploration and fixation. Treatment included a 2-cm shortening osteotomy of the humeral shaft and osteosynthesis in order to obtain a tension-free primary end-to-end repair of the radial nerve.

Conclusion:

Tension-free primary nerve repair can be technically challenging with humeral shaft fractures. A shortening osteotomy of the humeral shaft and osteosynthesis are feasible to achieve tension-free neurorrhaphy without nerve-grafting.
Unstable Osteochondritis Dissecans of the Glenoid Fixed with Autogenous Osteochondral Plugs in a College Baseball Player
Authors: Tsujino Shohei , Tsujino Megumi , Tsujino Akihito
Published: December 2018

Case:

A 19-year-old college baseball outfielder presented with a 3-month history of right shoulder pain. Radiographs, computed tomography, and magnetic resonance imaging showed a large osteochondral defect at the posterosuperior aspect of the glenoid. Arthroscopic evaluation identified an unstable fragment that was partially attached. Fixation of the osteochondral fragment was achieved with autogenous osteochondral plugs through a posterior arthrotomy. At 8 months after surgery, the patient was able to return to his former competitive level of performance.

Conclusion:

Osteochondritis dissecans (OCD) rarely affects the glenoid. Fixation of a large glenoid OCD lesion with autogenous osteochondral plugs was a successful treatment in this patient.
Bilateral Congenital Vertical Talus in Association with Beals Contractural Arachnodactyly
Authors: Morris Holly , Navarre Pierre
Published: December 2018

Case:

Congenital vertical talus (CVT) is a rare rigid flatfoot disorder with a rocker-bottom flatfoot appearance. It is characterized by hindfoot valgus and equinus, with associated midfoot dorsiflexion and forefoot abduction. We describe a patient who was born with dysmorphic features and subsequently was diagnosed with Beals contractural arachnodactyly. After the diagnosis of bilateral CVT was made, it was treated with a single-stage open reduction. There was a unilateral recurrence, which was treated with revision surgery. The patient had an excellent functional outcome.

Conclusion:

CVT often requires surgical management and may recur. To our knowledge, this is the first reported case of CVT associated with Beals contractural arachnodactyly.
Pediatric Terrible Triad Injury of the Elbow: A Rare and Easily Missed Injury
Authors: Rooke Gareth M.J. , Maarschalk Jeremy A. , Navarre Pierre
Published: December 2018

Case:

We report the case of a pediatric terrible triad injury of the elbow consisting of an ulnohumeral dislocation, a radial neck fracture, and a coronoid chondral injury, which was diagnosed at 14 days following injury. We describe our surgical technique and provide details of the postoperative course, including the development of a rotational contracture following heterotopic ossification.

Conclusion:

We describe a rare and challenging injury that should be recognized early and managed surgically to maintain acceptable elbow function.
Isolated Tear of the Pectoralis Minor Tendon in a Professional American Football Quarterback
Authors: McNeilan Ryan J. , Rose Michael , Mayer Braden , Boublik Martin
Published: December 2018

Case:

A 27-year-old right-hand-dominant National Football League (NFL) quarterback injured his right shoulder after falling with the elbow flexed and the shoulder flexed and slightly abducted. He noted an immediate onset of right anterior shoulder pain, but was able to continue playing and throwing without notable deficit. Magnetic resonance imaging of the chest revealed an isolated tear of the pectoralis minor tendon. The patient received nonoperative local treatment and was able to start as quarterback at the next game.

Conclusion:

An isolated pectoralis minor tear in the dominant arm of a professional throwing athlete may be successfully treated with nonoperative local treatment and shoulder strengthening and stabilization exercises, allowing an early return to competition.
Type-V Median Nerve Entrapment in a Pediatric Medial Condyle Fracture
Authors: McCarthy Conor F. , Kyriakedes James C. , Mistovich R. Justin
Published: December 2018

Case:

A 30-month-old boy with a displaced medial condyle fracture and no history of an elbow dislocation was found to have an entrapped median nerve.

Conclusion:

Entrapment of the median nerve is a potential consequence of a displaced medial condyle fracture, even when there are no neurologic deficits on presentation. This provides additional support for open reduction of these fractures rather than percutaneous treatment or nonoperative management. Prompt identification and extraction of an interposed ulnar or median nerve is imperative to prevent the catastrophic consequences of an upper-extremity nerve palsy in children, as well as to optimize fracture-healing and elbow growth and development.
PERBEDAAN HASIL BELAJAR MATEMATIKA SISWA MENGGUNAKAN MODEL PEMBELAJARAN SNOWBALL THROWING DAN MODEL TALKING STICK
Authors: Syafi’i Mohamad , Fatmalawati Kiki
Published: December 2018

Penelitian ini dilakukan untuk mengetahui ada tidaknya perbedaan hasil belajar matematika dengan menggunakan model pembelajaran Snowball Throwing dan model pembelajaran Talking Stick. Model pembelajaran Snowball Throwing merupakan model pembelajaran yang melibatkan siswa aktif dalam proses pembelajaran dengan kegiatan memberikan pertanyaan kepada siswa lain dengan cara melempar bola kertas. Model pembelajaran Talking Stick merupakan model pembelajaran dengan media tongkat, siapa yang memegang tongkat wajib menjawab pertanyaan yang diberikan oleh guru. Penelitian ini dilakukan di SMA Asyariah Gintung, Tangerang pada bulan Maret sampai April 2017. Berdasarkan hasil penelitian, rata-rata hasil belajar matematika menggunakan model Snowball Throwing adalah 80,1 sedangkan rata-rata hasil belajar matematika menggunakan model Talking Stick adalah 60,83. Dalam penelitian komparasional ini, pengujian hipotesis statistik menggunakan uji – t. Hasil analisis data uji beda dua rata – rata hasil belajar matematika menggunakan uji – t diperoleh thitung = 6.712 dan ttabel = 2.002 dengan dk = 58 dan a = 0.05 Berdasarkan hasil tersebut dapat disimpulkan bahwa thitung >  ttabel yang artinya terdapat perbedaan hasil belajar matematika siswa dengan menggunakan model pembelajaran Snowball Throwing dan model pembelajaran Talking Stick.
NILAI AWAL PADA METODE NEWTON-RAPHSON YANG DIMODIFIKASI DALAM PENENTUAN AKAR PERSAMAAN
Authors: Batarius Patrisius
Published: December 2018

Penentuan akar suatu persamaan berarti membuat persamaan tersebut sama dengan nol f(x)=0. Beberapa metode numerik bisa digunakan untuk menentukan akar persamaan yang bentuknya sangat kompleks. Akan tetapi untuk akar ganda, beberapa metode numerik seperti metode bisection, metode regulafalsi, metode Newton-Raphson, metode Secant memiliki kesulitan. Penelitian ini bertujuan untuk mengetahui pengaruh penentuan nilai awal pada metode Newton-Raphson yang dimodifikasi dalam mementukan akar persamaan yang memiliki akar ganda. Simulasi dilakukan pada persamaan yang memiliki 1 akar tunggal dan 2 akar ganda atau lebih. Dengan metode Newton-Raphson nilai awal yang dipilih dekat dengan akar tunggal maka akarnya terletak pada sekitar atau sama dengan akar tunggal. Namun dengan metode Newton-Raphson yang dimodifikasi pemilihan nilai awal lebih dekat dengan akar tunggal, nilai akar yang dihasilkan menunjuk pada akar ganda.
İstilacı Böcek Türlerinin Mücadelesinin Yönetimi: Anoplophora chinensis (Forster, 1771) (Coleoptera: Cerambycidae) Örneği
Authors: BOZKURT Vildan
Published: December 2018

Uluslararası ticaret birçok böcek türünün
bir yerden başka bir ülkeye taşınmasında önemli rol oynamaktadır. İthal edilen
süs bitkileri yoluyla taşınabilen zararlılardan birisi de turunçgil uzun
antenli böceği Anoplophora chinensis (Forster, 1771) (Coleoptera: Cerambycidae)
olup, Bitki Karantinası Yönetmeliği’nin Ek-1 B-Türkiye’de sınırlı olarak
bulunan ve ithale mani teşkil eden karantinaya tabi zararlı organizmalar
listesinde yer almaktadır. Bu tür, bitkinin odun dokusu içerisinde yumurta,
larva, pupa dönemlerinde taşınabilmektedir. Dişiler genellikle ağacın
gövdesinin topraktan 60 cm yükseklikteki yüzeyine ya da dışarıda kalmış kök
bölümlerindeki kabuklar üzerinde mandibulası ile T biçiminde yarıklar açarak bu
yarıkların her birine bir adet yumurta bırakmaktadır. Zararlının erginleri
doğada mayıs ve ekim ayları arasındaki dönemde bulunmaktadır. Yumurta, larva ve
pupa dönemleri ağacın gövdesi içerisinde bulunduğundan varlığının dışarıdan
tespit edilmesi oldukça zordur. Ancak, ağacın gövdesinden çıkış yapan
erginlerin oluşturduğu 1-1,5 cm çapındaki çıkış deliklerinin ya da erginlerin
görülmesi ile zararlının varlığı tespit edilebilmektedir. Sürgünlerde beslenme
belirtilerinin ve gövdede talaş artıklarının görülmesi de zararlının varlığına
işaret olabilmektedir. Zarar belirtilerinin çoğu ağacın yerden 1,5 m yüksekliği
civarında görülmektedir. Ergin çıkış delikleri görüldüğünde ise mücadele için
geç kalınmış olmaktadır. Bu çalışmada turunçgil uzun antenli böceği A.
chinensis’in kısa biyolojisi, konukçuları, zarar şekli, mücadelesi ve
eradikasyonu konusunda Türkiye’de ve dünyada yürütülen çalışmalar ile alınması
gereken karantina önlemleri hakkında bilgi verilmesi amaçlanmıştır.
Ormanların İhmal Edilen Canlıları: Yabani Arılar
Authors: GÜLER Yasemin
Published: December 2018

Bal
arısı (Apis mellifera L.) ekosistemlerde polinatör olarak en iyi bilinen ve en
yaygın arı türü olmasına rağmen, tüm dünyada bugüne kadar tanımlanmış yaklaşık
16.000 arı türü bulunmaktadır. Çiçekli bitkilerin yaklaşık %80’ninin hayvanlar
vasıtasıyla tozlaştığı düşünüldüğünde, orman dâhil tüm ekosistemlerde arıların
varlığının önemi daha net anlaşılacaktır. Birçok ılıman orman ekosistemi
üzerinde antropojenik baskı söz konusudur. Orman alanlarının tarım alanlarına
dönüştürülmesi, orman yangınları ve su kaynaklarına yapılan müdahaleler gibi
doğrudan veya dolaylı yolla meydana getirilen bu baskı, bitki birliklerinde
bozulmalara, dolayısıyla orman fauna elemanlarında da değişimlere yol
açmaktadır. Bitkiler ile arılar arasındaki mutualistik ilişki nedeniyle tahrip
olmuş orman alanlarını iyileştirme çalışmalarında yabani arıların habitat
ihtiyaçlarının da dikkate alınması, ekosistemin daha çabuk sağlığına
kavuşmasını sağlayacaktır. Çünkü ılıman iklimlerde pek çok orman ağacı rüzgâr
yardımı ile tozlaşabilirken, bu alanlardaki bazı yapraklı ağaç, çalı ve küçük
ağaç türleri ile otsu çiçekli bitkilerin pek çoğu arıların yardımına ihtiyaç
duyar. Bunlar arasında Castanea sativa Mill. (Anadolu kestanesi), Tilia spp.
(Ihlamur), Acer spp. (Akçaağaç
türleri), Liquidambar
orientalis Mill. (Sığla), Laurus
nobilis L. (Defne), Buxus
sempervirens L. (Şimşir), Arbutus
unedo L. (Kocayemiş), Arbutus
anrdache L. (Sandal), Cerasus mahalep (L.) Miller (Mahlep), Rhus
coriaria L.(Derici sumağı), Cotinus coggygria Scop. (Boyacı sumağı), Tamarix
germanica L. (Ilgın), Sorbus aucuparia L. (Kuş üvezi), Erica arborea L. (Ağaç
funda), Cercis siliquastrum L. (Erguvan), Lavandula spp. (Lavanta), Astragalus spp. (Geven)
ve Althaea
offinalis L. (Hatmi)
sayılabilir. Yaban hayatı için besin ve korunma alanı anlamına gelen bu bitki
türlerinin korunması ve varlığının sürdürülmesi, erozyonun önlenmesi için de
büyük önem taşır. Tahrip olmuş bir ormandaki ağaçların daha iyi yenilenmesi ve
ormanın biyolojik çeşitliliğinin korunmasını sağlayacak olan tozlaşmanın
gerçekleşmesi, o ormanda yeterli sayı ve çeşitlilikte arı türünün bulunmasına
bağlıdır. Bu nedenle, tozlaşma işlevlerinin sürdürülebilirliği için yüksek
yoğunluk ve tür çeşitliliğinin koruması gereklidir. Bu da ancak yabani arılar
için uygun birbiri ile bağlantılı yarı doğal alanların oluşturulması ve doğal
alanların korunması ile mümkün olacaktır.
Penerapan Algoritma Semut Dalam Penentuan Distribusi Jalur Pipa Pengolahan Air Bersih
Authors: Windarto Agus Perdana , Sudirman Sudirman
Published: December 2018

In general, the shortest path search can be divided into two methods, namely conventional methods and heuristic methods. Conventional methods tend to be more easily understood than heuristic methods, but when compared to the results obtained, heuristic methods are more varied and the time required for calculation is shorter. In the heuristic method there are several algorithms, one of which is the ant algorithm. An ant algorithm is an algorithm that is adopted from the behavior of ant colonies. Naturally ant colonies are able to find the shortest route on the way from the nest to the food sources. Ant colonies can find the shortest route between the nest and the source of food based on footprints on the trajectory that has been passed. The more ants that pass through a path, the more obvious the footprints will be. Ants Algorithms are very appropriate to be applied in solving optimization problems, one of which is to determine the shortest path. This study aims to facilitate the Development of Drinking Water Treatment Performance to make decisions in determining the point where the installation of water distribution pipelines that will be distributed to residents' homes. This study took 8 points of clean water treatment pipeline with starting point A and point N. Based on the calculation of clean water pipeline between A and N by using ant algortima, from two cycles passed, it is proven that the shortest path is only one pipeline, pipe N as destination with route length 4 as V1 → V2 → V3 → V4 → V8.
Implementasi Metode K-Means berbasis Chi-Square pada Sistem Pendukung Keputusan untuk Identifikasi Disparitas Kebutuhan Guru
Authors: Nishom M. , Wibowo Dega Surono
Published: December 2018

In this research, the Chi-Square-based K-Means method was implemented in the Decision Support System (DSS) to identify the disparity in Teacher's needs compared to the real conditions of Teacher's availability in the education unit (school). This is very important, because based on data from the UNESCO Institute for Statistics shows that the ratio between teachers and students in Indonesia is the lowest in the world. This is influenced by the distribution of Teachers who do not meet the needs and exceed the number of student enrollments at all levels of education, resulting in less optimal quality of education produced in various regions in Indonesia. Thus, it is necessary to group data and label the disparity of Teacher's needs in educational units in various regions in Indonesia, especially in the Tegal City. In this case, the K-Means Clustering method was used to group data based on Teacher's availability data, and Chi-Square analysis was used to determine the disparity in Teacher's needs with the condition of Teacher's availability. Data collection methods used in research are observation methods. The results showed that the DSS application that had been produced could dynamically determine the education unit cluster based on the teacher availability disparity category in the Tegal City. In addition, labeling of the K-Means cluster based on the Chi-square test has a high degree of accuracy, which is 84.47%.
Penentuan Prioritas Pengambilan Pesanan Barang Oleh Angkutan Kota dengan Metode Rule-Based System
Authors: Rakhmawati Nur Aini , Budi Aditya Septa , Altetiko Faizal Johan , Ramadhani Fajar , Wardati Nanda Kurnia , Hindrayani Kartika Maulida
Published: December 2018

Angkotin is a system that provides an alternative for urban transport to not only be used for passenger transportation, but also as freight service. Therefore, it needs a decision support system for taking order to delivery to the destination according to each criterion from urban transportation. The method used to develop this decision support system is a rule-based system. The result of this research is a decision support system that can help public transportation to find orders that can be taken based on four factors, such as distance, direction, route code, and status of storage capacity. Based on these four factors, the system can provide an order recommendation under the appropriate conditions through the Angkotin application. Based on our experiment, our system performs on 7 seven cases as expected.
Mid-term results of papillary muscles approximation: a retrospective single-center study
Authors: Bazylev V. , Mikulyak A. , Babukov R. , Karnakhin V.
Published: December 2018

Background. Enlargement of the left ventricular chamber and displacement of papillary muscles in the apical and lateral directions increase the tethering forces. Left ventricular and papillary muscle desynchrony and reduced myocardial contractility reduce the closing forces, thus leading to impaired leaflet coaptation and appearance of mitral regurgitation. Therefore, treatment of mitral insufficiency requires an integrated approach, affecting all aspects of the pathogenesis of mitral regurgitation recurrence. Recent publications show that adjunctive subvalvular repair during mitral annuloplasty for secondary mitral regurgitation is effective in preventing recurrent regurgitation. One of these procedures is papillary muscle approximation. However, the safety and the positive impact of this method are still open to question. Aim. This study focused on the assessment of mid-term results of papillary muscles approximation and comparison of the obtained results with those of isolated mitral annuloplasty.Methods. Two hundred and twelve patients with ischemic cardiomyopathy and ischemic mitral regurgitation were enrolled in this retrospective single-center study. The patients were randomised to 2 groups by using propensity score matching (a “neighbor” method) according to the following parameters: end diastolic volume, end systolic volume, stroke volume and ejection fraction. The first group included 112 patients with ischemic cardiomyopathy and mitral regurgitation, who underwent coronary artery bypass grafting, mitral annuloplasty and papillary muscle approximation. The second group included 112 patients with ischemic cardiomyopathy who underwent coronary artery bypass grafting and mitral valve annuloplasty. We evaluated early and mid-term results.Results. Two patients in group 1 and three patients in group 2 died of heart failure progression during 31.3±10.4 month follow-up. According to the Kaplan-Meier analysis, no statistically significant differences were noted between the groups (log-rank test = 0.8). Approximation of papillary muscles in patients with ischemic mitral regurgitation improved mitral valve leaflet coaptation as evidenced by the values of coaptation depth, coaptation line and tenting area (p>0.05). During follow-up, 3 cases (2.7%) of mitral insufficiency recurrence were recorded in group 1 and 16 (14.3%) in group 2. The Kaplan-Meier analysis of cumulative probability showed a significant difference in freedom from recurrence of mitral regurgitation ≥2 between groups in the mid-term postoperative period (log-rank test = 0.041).Conclusion. Adjunctive papillary muscle approximation performed at the time of mitral annuloplasty improves the durability of mitral valve repair.
Received 18 April 2018. Revised 12 October 2018. Accepted 18 October 2018.
Funding: The study did not have sponsorship.
Conflict of interest: Authors declare no conflict of interest.
Intermittent warm blood cardioplegia versus crystalloid cardioplegia in coronary artery bypass grafting surgery patients: Is there any difference in the early postoperative period?
Authors: Bazylev V. , Evdokimov M. , Gornostaev A. , Schegolykov A. , Bulygin A.
Published: December 2018

Aim. The purpose of this study was to assess the effectiveness of two types of cardioplegia solutions, namely, blood and crystalloid cardioplegia in terms of clinical outcomes in patients undergoing coronary artery bypass grafting.Methods. The retrospective study recruited 2,539 coronary artery bypass grafting patients, with 1,070 (45%) of them receiving crystalloid and 1,289 (55%) blood cardioplegia as a primary cardioplegic agent. Propensity score matching was performed to create comparable patient groups. The primary endpoint of the study was hospital mortality and different postoperative outcomes.Results. Patients receiving blood cardioplegia versus those with crystalloid cardioplegia were found out to have higher rate of acute kidney injury (15.7% vs 11.8%; OR=0.72; p=0.01) and postoperative ventilatory support (Ме=5:35 vs Me=5; p<0.05). During ventilatory support, the crystalloid cardioplegia patients demonstrated lower hemoglobin (Me=65 g/l vs Me=74 g/l; p<0.01) and hematocrit (Me=21% vs Mе=24%; p<0.01). Intraoperatively, packed red blood cells were administered in blood cardioplegia patients by 30% more often than in crystalloid cardioplegia ones (24% vs 19.6%; OR=0.77; p=0.02). Patients receiving crystalloid cardioplegia had a greater postoperative fluid balance (Me=1,700 ml vs Mе=1,350 ml; p<0.01) more frequent use of inotrope and vasopressor therapy (4.5% vs 2.8%; OR=1.64; p=0.04) and a longer stay in intensive care unit (p<0.01).No statistically significant differences were observed concerning perioperative and postoperative myocardial infarction, low cardiac output syndrome or intra-aortic balloon pumping, allogeneic blood transfusions in the postoperative period, episodes of atrial fibrillation, gastrointestinal complications, reoperation due to any cause, length of stay in hospital, hospital mortality.Conclusion. Blood cardioplegia might decrease the need in inotrope and vasopressor therapy, length of stay in intensive care unit, but it increases the rate of acute kidney injury, risk of allogeneic blood transfusions and durability of postoperative ventilatory support. Received 1 August 2018. Revised 18 October 2018. Accepted 22 October 2018.Funding: The study did not have sponsorship.Conflict of interest: Authors declare no conflict of interest.Author contributionsConception and study design: M.E. Evdokimov, A.A. Gornostaev, V.V. BazylevData collection and analysis: M.E. Evdokimov, A.A. Gornostaev, A.A. Schegolkov, A.V. BulyginStatistical analysis: A.A. Schegolkov, A.V. BulyginDrafting the article: A.A. Schegolkov, A.V. BulyginCritical revision of the article: M.E. Evdokimov, A.A. Gornostaev, V.V. BazylevFinal approval of the version to be published: V.V. Bazylev, M.E. Evdokimov, A.A. Gornostaev, A.A. Schegolkov, A.V. Bulygin
Testing of delivery system for transcatheter mitral valve implantation
Authors: Sharifulin R. , Bogachev-Prokophiev A. , Zhuravleva I. , Timchenko T. , Zykov I. , Boyarkin E. , Ovcharov M. , Karaskov A.
Published: December 2018

Aim. The aim of the study was to evaluate a prototype of a delivery system for transcatheter mitral valve replacement in vitro and in laboratory animal implantation. Methods. The prototypes of the delivery system and transcatheter mitral valve prosthesis were evaluated in vitro in an isolated pig heart using transapical access. In an experiment on a large laboratory animal implantation was performed using transatrial access.Results. It was found out that the prototype of the delivery system allows to adequately deliver and release the transcatheter prosthesis in implantation zone using transatrial and transapical approaches without frame deformation and valve dysfunction. Conclusion. The delivery system prototype for transcatheter mitral valve replacement demonstrated satisfactory characteristics during in vitro experiment and large laboratory animal implantation.
Received 26 November 2018. Revised 17 December 2018. Accepted 21 December 2018.
Funding: The study was carried out with the support of a grant of the Russian Science Foundation No. 16-15-10315.
Conflict of interest: Author declare no conflict of interest.
Author contributionsConception and study design: I.Y. Zhuravleva Data collection and analysis: T.P. Timchenko, M.A. Ovcharov, E.V. Boyarkin Drafting the article: R.M. Sharifulin, I.S. Zykov Critical revision of the article: A.V. Bogachev-Prokophiev, A.M. KaraskovFinal approval of the version to be published: R.M. Sharifulin, A.V. Bogachev-Prokophiev, I.Y. Zhuravleva, T.P. Timchenko, I.S. Zykov, E.V. Boyarkin, M.A. Ovcharov, A.M. Karaskov
PROJECT-BASED SCIENCE LEARNING AND PRE-SERVICE TEACHERS’ SCIENCE LITERACY SKILL AND CREATIVE THINKING
Authors: Suryandari Kartika Chrysti , Fatimah Siti , Sajidan Sajidan , Rahardjo Sentot Budi , Prasetyo Zuhdan Kun
Published: December 2018

Abstract: This study set out to examine the effectiveness of project-based science learning towards pre-service teachers literacy skills and learning creativity in wave and optical materials. This quasi-experimental study involved 115 students of Primary Teacher Education Program, Universitas Sebelas Maret Surakarta.  Direct and in-depth data dissemination techniques were used in this study. The aspects of creative thinking abilities include fluency, authenticity, elaboration, and flexibility. Mann Withney U test was used to test the hypothesis, while the N-Gain test was performed to determine the pre-service teachers improvement in scientific literacy skills and creative thinking. Both qualitative and quantitative data analyses were performed in this study. The results showed that: 1) material and optical tools–based learning activities are appropriate for the pre-service teachers scientific literacy skills and creative thinking. The correct answer term includes the highest average probability statistics from other subindicators; 2) aspects of science that are used in the aspects of literacy is in good category but the originality aspect in its ability needs to be developed and processed continuously. Keywords: science literacy skill, creative thinking skill, project based learning, waves and optics PENGARUH PEMBELAJARAN SAINS BERBASIS PROYEK TERHADAP KETERAMPILAN LITERASI ILMU DAN PEMIKIRAN KREATIF CALON GURU  Abstrak: Penelitian ini bertujuan untuk mengukur keefektifan pembelajaran sains berbasis proyek terhadap keterampilan literasi dan kreativitas belajar dalam materi gelombang dan optik. Penelitian ini dilakukan secara eksperimen semu. Subjek penelitian ini adalah 115 siswa semester Program Pendidikan Guru Pratama, Universitas Sebelas Maret Surakarta. Teknik penyebaran data langsung dan mendalam. Aspek kemampuan berpikir kreatif meliputi kelancaran, keaslian, elaborasi, dan fleksibilitas. Untuk menentukan besarnya peningkatan keterampilan literasi sains dan siswa berpikir kreatif digunakan N-Gain Test hipotesis menggunakan tes Mann Withney U. Analisis data dilakukan secara kualitatif dan kuantitatif. Hasil penelitian menunjukkan bahwa: 1) kegiatan pembelajaran berbasis material dan alat optik sesuai untuk keterampilan literasi sains dan pemikiran kreatif siswa. Istilah jawaban yang benar mencakup statistik probabilitas rata-rata tertinggi dari subindikator lainnya; 2) aspek ilmu yang digunakan dalam aspek literasi dalam aspek yang baik tetapi aspek orisinalitas dalam kemampuannya perlu dikembangkan dan diolah terus- menerus. Kata kunci: keterampilan literasi sains, keterampilan berpikir kreatif, pembelajaran berbasis proyek, gelombang dan optik
STUDENTS’ DESCRIPTIVE WRITING PERFORMANCE: THE ANALYTIC SCORING ASSESSMENT USAGE
Authors: Sumekto Didik Rinan , Setyawati Heny
Published: December 2018

Abstract: This study explores students’ performance in descriptive writing. Forty-five English Education sophomore students participated to be the respondents. The data were collected from students’ descriptive writing performance using a 5-Likert scale and they were quantitatively analyzed through the descriptive and factor analysis tests. Students’ descriptive writing were measured through the means of components of grammar, punctuation, coherence, cohesion, and content. Other substantial findings corresponded with the principal component analyses that determined the presence of 5 components with the eigenvalue outreaching 1, positioning 31%, 27.3%, 19.7%, 12.6%, and 9.4% of the variances accordingly. This referred to the factorial analysis that claimed 2 extracted components with a total of 58.32% of the variance. The component 1 was 31.00% and component 2 was 27.32%. The interpretation of these components is coherent with the pilot results on the descriptive writing performance scale, in which the component 1 shows the positive affect items and the component 2 partially indicates the negative affect items.  Keywords: Analytic scoring, descriptive writing, factor analysisPENINGKATAN MENULIS DESKRIPTIF MAHASISWA:  PENERAPAN ASESMEN PENSKORAN ANALITIK Abstrak: Penelitian ini mengeksplorasi capaian peningkatan mahasiswa dalam menulis esai deskriptif. Empatpuluh lima mahasiswa pendidikan Bahasa Inggris berpartisipasi sebagai responden. Pengumpulan data diambil melalui hasil esai deskriptif mahasiswa dengan menggunakan 5 skala Likert dan analisis data dilakukan secara kuantitatif melalui uji deskriptif dan analisis faktor. Esai deskriptif mahasiswa diraih melalui rata-rata hitung komponen gramatika, tanda baca, koherensi, kohesi, dan konten. Temuan substansi lainnya terkait dengan analisis komponen utama yang menetapkan 5 komponen dengan raihan 1 nilai eigen yang menempatkan 31%, 27,3%, 19,7%, 12,6%, dan 9,4% varian. Temuan ini merujuk pada analisis faktor dengan 2 komponen yang diraih sebesar 58,32% dari keseluruhan varian, di mana komponen 1 sebesar 31,00% dan komponen 2 sebesar 27,32%. Tafsiran atas dua komponen ini koheren dengan hasil awal skala capaian peningkatan esai deskriptif, di mana komponen 1 menunjukkan butir positif dan komponen 2 menunjukkan sebagian butir negatif.   Kata Kunci: Penskoran analitik, esai deskriptif, analisis faktor
THE EFFECT OF WORKLOAD, INDIVIDUAL CHARACTERISTICS, AND SCHOOL CLIMATE ON TEACHERS’ EMOTIONAL EXHAUSTION IN ELEMENTARY SCHOOLS OF PAPUA
Authors: Werang Basilius Redan
Published: December 2018

Abstract:This study was aimed to investigate the potential effect of workload, individual characteristics, and school climate on teachers’ emotional exhaustion in Christian elementary schools of Boven Digoel district, Papua. The problems guided the study, namely: (a) does workloadeffectsignificant positively on teachers’ emotional exhaustion elementary schools?; (b) does individual characteristics effectsignificant positively on teachers’ emotional exhaustion in elementary schools?; and (c) does school climate effect significant positively on teachers’ emotional exhaustion in elementary schools?. Four quantitative questionnaires using Likert’s scale were administered to 94 teachers who have been decided as respondents. Data were analyzed quantitatively using simple linear regression analysis technique by employing SPSS version 21 for windows. Results of the study revealed that workload, individual characteristics, and school climate partially effect significant positively on teachers’ emotional exhaustion in elementary schools. These findings might be worthwhile for the school supervisors as well as The Head of Education Office in regional government level to eliminate teachers emotional exhaustion by creating different programs to improve workload system and to improve school climate on one hand and, on the other hand, to foster teachers’ character of hard-working.Keywords: workload, individual characteristics, school climate, emotional exhaustion, teachers PENGARUH BEBAN KERJA, KARAKTERISTIK INDIVIDU, DAN IKLIM SEKOLAH TERHADAP KELELAHAN EMOSIONAL GURU SD DI PAPUAAbstrak: Tujuan penelitian ini adalah untuk menginvestigasi pengaruh beban kerja, karakteristik individu,  dan iklim sekolah terhadap kelelahan emosional guru SD Kristen di Kabupaten Boven Digoel, Papua. Masalah yang menuntun penelitian ini adalah: (a) apakah beban kerja guru berpengaruh secara positif dan signifikan terhadap kelelahan emosional guru SD?; (b) apakah karakteristik individu berpengaruh secara positif dan signifikan terhadap kelelahan emosional guru SD?; dan (c) apakah iklim sekolah berpengaruh secara positif dan signifikan terhadap kelelahan emosional guru SD? Empat angket kuantitatif yang menggunakan Skala Likert disebarkan kepada 94 guru yang menjadi responden. Data dianalisis secara kuantitatif menggunakan SPSS versi 21. Hasil analisis data menunjukkan bahwa beban kerja, karakteristik individu, dan iklim sekolah secara parsial berpengaruh secara positif dan signifikan terhadap kelelahan emosional guru SD. Hasil penelitian ini dapat menjadi pertimbangan bagi penyelia sekolah dan Kepala Dinas Pendidikan pada level pemerintah Kabupaten Boven Digoel dalam mengupayakan berbagai program yang berbeda untuk memperbaiki sistem pembebanan kerja dan iklim sekolah serta mendorong karakter guru yang suka bekerja keras dan pantang menyerah.Kata Kunci: beban kerja, karakteristik individu, iklim sekolah, kelelahan emosional, guru
HOW LEARNING DISABILITIES TEACHERS IN THE KINGDOM OF SAUDI ARABIA DEFINE STUDENTS WITH GIFTEDNESS AND LEARNING DISABILITIES
Authors: Alsamiri Yasir
Published: December 2018

Abstract: This study set out to examine how learning disabilities teachers define Students with Gifted and Learning Difficulties (SGLD). One rationale for interviewing learning disabilities teachers is that they work with students with learning disabilities and may be more aware than others of some of the characteristics of SGLD. The other rationale is that the education system in the Kingdom of Saudi Arabia does not focus on giftedness very much, and therefore, only a small number of teachers of giftedness were available for this study. The qualitative data garnered from the interviews were analysed using content analysis. Nine learning disabilities teachers participated in this study. Findings from the study suggested that the learning disabilities teachers’ definitions of SGLD are limited, indicating a lack of understanding of the characteristics of SGLD. The results of this study may assist teachers and educational personnel in seeking the optimal methods to identify and assist SGLD. Keywords: giftedness and learning disabilities, learning disabilities teachers  BAGAIMANA GURU DARI SISWA DENGAN KESULITAN BELAJAR DI ARAB SAUDI MENDEFINISIKAN SISWA BERBAKAT DAN KESULITAN BELAJAR  Abstrak: Penelitian ini bertujuan untuk menggali bagaimana guru siswa berbakat dan kesulitan belajar (SGLD) mendefinisikan arti berbakat serta kesulitan belajar yang dialami oleh siswa mereka. Salah satu alasan utamanya adalah karena karena mereka merupakan orang yang seharusnya sangat dekat dengan siswa-siswa tersebut, sehingga mereka selayaknya lebih paham serta mengetahui karakteristik dari siswa berbakat tersebut. Alasan lainnya adalah karena sistem pendidikan di Arab Saudi belum banyak memberikan perhatian pada pendidikan bagi anak berbakat serta mengalami kesulitan belajar, yang salah satunya tercermin dari sedikitnya jumlah guru anak berbakat ini. Data kualitatif yang diperoleh dari interview dianalisis dengan analisis konten. Sembilan orang guru terlibat dalam penelitian ini. Hasil penelitian menunjukkan bahwa definisi guru SGLD sangatlah terbatas atau kurang, yang ditunjukkan dari kurangnya pengertian mereka tentang pengertian SGLD itu sendiri. Hasil penelitian ini dapat digunakan untuk membantu guru serta pihak terkait dalam menyediakan metode terbaik untuk mengidentifikasi serta membantu siswa berbakat serta kesulitan belajar. Kata kunci: kebutuhan khusus dan kesulitan belajar, guru anak dengan kesulitan belajar
THE EVOLUTION OF HISTORIC WATERFRONT: A CASE STUDY OF GEORGE TOWN, PENANG
Authors: Salim Nurbaidura , Mohamed Badaruddin
Published: December 2018

Waterfront development emerged as one of the important issues of urban design and planning since it provides an opportunity to improve social well-being, economic development and physical setting of a city. In recent decades, many waterfronts have experienced reorientation from brownfield to commercial, residential and recreational areas. Many early cities are located close to water bodies due to water being a form of transportation. However, the advancement of modern infrastructures such as roadways and increased modes of transportation has moved the central business district into inner lands. This has left many old city centres suffering economic depression, losing their local identity as people moved to other places, and eventually facing abandonment. In this case, tourism is seen as a panacea to help revitalizing those areas. This paper seeks to address the evolution of historic waterfront at World Heritage Sites in Malaysia, from the perspective of tourism development. By using evolutionary analysis based on previous resources and maps, it demonstrates that government development agencies and tourism development have been the key agents of change in influencing waterfront redevelopment.