bluuebunny/crossref_metadata_2025 huggingface dataset:
Penerapan Model TSTS Untuk Meningkatkan Hasil Belajar Siswa Materi IPA di Sekolah Dasar
Authors: Fittriyanti Fittriyanti
Published: August 2021

Penelitian ini bertujuan untuk mengetahui peningkatan hasil belajar serta aktivitas guru dan siswa dalam proses pembelajaran dengan metode Two Stay Two Stray pada Tema 6 Subtema 1 Keanekaragaman Hewan dan Tumbuhan. Penelitian ini menggunakan pendekatan kualitatif  dengan jenis penelitian tindakan kelas. Sumber data adalah seluruh siswa kelas IV SD Negeri 9 Jangka tahun ajaran 2019/2020 yang berjumlah 16 orang. Data dikumpulkan melalui tes, observasi,  wawancara,  dan  catatan  lapangan.  Hasil  penelitian menunjukkan  bahwa penerapan pembelajaran Two Stay Two Stray dapat meningkatkan hasil belajar siswa pada materi keanekaragaman hewan dan tumbuhan di kelas  IV SD Negeri 9 Jangka. Hal ini terlihat dari hasil tes akhir siklus I diperoleh persentase 62,50 persen dan pada siklus II meningkat menjadi 87,50 persen. Aktivitas guru dan siswa dalam proses pembelajaran sudah termasuk dalam kategori sangat baik dan siswa terlibat aktif dalam pelaksanaan pembelajaran. Dengan demikian, dapat disimpulkan bahwa model Two Stay Two Stray dapat meningkatkan hasil belajar dan aktivitas guru dan siswa pada materi IPA di sekolah Dasar.
Model Pembelajaran Rolex Berbantuan Media Boneter Meningkatkan Keaktifan dan Keterampilan Berbicara Teks Descriptive
Authors: Arisandi Yuli
Published: August 2021

Penelitian ini bertujuan meningkatkan keaktifan dan keterampilan berbicara Bahasa Inggris siswa melalui model pembelajaran role exchange berbantuan media boneka karakter. Penelitian ini terdiri dari dua siklus. Tahapan penelitian ini meliputi empat tahapan yaitu merencanakan, menerapkan tindakan, pengamatan dan refleksi. Penelitian menggunakan dua data. Data kualitatif diperoleh melalui keaktifan siswa dalam pembelajaran. Data kuantitatif diperoleh dengan memberi test kemampuan berbicara. Hasil penelitian keaktifan siswa yang tinggi pada kondisi awal baru mencapai 5 siswa atau 17,86% meningkat manjadi 23 siswa atau 82,14% pada siklus II. Hal ini terlihat semua siswa memperhatikan guru, terlibat dalam pemecahan masalah, mengaplikasikan materi pelajaran yang diperolehnya, sebagian sudah berani mengeluarkan ide dan bertanya. Data keterampilan berbicara pada kondisi awal menunjukkan 42,85% mendapat nilai yang sama atau di atas KKM dengan rata-rata 61,77% meningkat menjadi 89,29% dengan nilai rata-rata 77,3 pada siklus kedua. Peningkatan secara signifikan pada aspek penguasaan kosa kata, pemahaman dan kelancaran. Sementara tata bahasa dan pengucapan meningkat meskipun tidak tajam. Kesimpulan dari penelitian ini adalah: (1) keterampilan berbicara siswa terus meningkat dari kondisi awal, siklus pertama kemudian siklus kedua; 2) Keaktifan siswa dalam kegiatan belajar mengajar bahasa Inggris meningkat.
Pengembangan KIT Meriam Telur untuk Meningkatkan Motivasi dan Hasil Belajar Siswa
Authors: Wahab Abdul
Published: August 2021

Penelitian ini bertujuan untuk membuat alat praktikum materi tekanan hidrostatis, agar dapat meningkatkan motivasi dan hasil belajar siswa. Kurangnya motivasi atau keinginan siswa belajar matapelajaran IPA dan hasil belajar materi tekanan hidrostatis salah satunya disebabkan oleh minimnya alat peraga atau alat praktikum materi tekanan hidrostatis. Penelitian dilakukan menggunakan rancangan uji coba one-group pre-test – post-test, sedangkan pengembangan Kit Meriam Telur menggunakan model ASSURE yang terdiri dari 6 tahap yaitu analyzer learner characteristic, (2) state standard and performance objective, (3) select methods, media, and materials, (4) utilize technology, media and material, (5) requires learner participation dan (6) evaluation and revision. Penelitian pengembangan Kit Meriam Telur diujicobakan kepada siswa kelas 8E yang terdiri atas 32 siswa dengan komposisi heterogen. Penggunaan Kit Meriam Telur dalam pembelajaran mampu meningkatkan motivasi belajar siswa dalam hal ini keinginan belajar siswa terhadap mata pelajaran  IPA, khususnya materi tekanan hidrostatis sebesar 43,36% dan meningkatkan hasil belajar dengan rata- rata n-gain sebesar 0,8 berkategori tinggi.
Pengaruh Model Two Stay Two Stray Terhadap Hasil Belajar Matematika Siswa Kelas II SD
Authors: Huda Wahyul
Published: August 2021

Penelitian ini bertujuan untuk mengetahui pengaruh model Two Stay Two Stray  terhadap hasil belajar matematika materi bangun ruang siswa kelas II SD 1 Barongan Kabupaten Kudus. Jenis penelitian ini adalah quasi-experimental dengan bentuk nonequalivalent control group design. Sampel pada penelitian ini yaitu dengan menggunakan sampling jenuh karena jumlah populasi relatif sedikit. Hasil analisis   n-gain menunjukkan bahwa model pembelajaran konvensional pada kelas kontrol memperoleh 0,29 dengan kriteria kurang sedangkan kelas eksperimen dengan penerapan model pembelajaran Two Stay Two Stray  mendapatkan 0,39 dengan kriteria sedang. Hasil Uji t menunjukkan nilai thitung = 2,104 sedangkan ttabel = 2,001 atau  thitung > ttabel dan signifikansinya sebesar 0,040 sehingga H0 ditolak. Uji regresi linear model pembelajaran Two Stay Two Stray  terhadap hasil belajar matematika siswa materi bangun ruang sebesar 89,3%. Simpulan dari penelitian ini adalah (1) terdapat perbedaan hasil belajar materi bangun ruang antara siswa pada kelas kontrol tanpa penerapan model pembelajaran Two Stay Two Stray  dan kelas eksperimen dengan penerapan model pembelajaran Two Stay Two Stray, (2) terdapat pengaruh yang signifikan hasil belajar materi bangun ruang pada kelas eksperimen dengan penerapan model pembelajaran Two Stay Two Stray.
Pembelajaran IPA Berbasis Mind Mapping dalam Pengembangan Kemampuan Berpikir Kritis, Kreatif, Komunikatif, dan Kolaboratif
Authors: Taib Minarti
Published: August 2021

Pembelajaran berbasis mind mapping merupakan pembelajaran menggunakan peta pikiran melalui kata kunci, istilah, gambar/simbol, menggambarkan keutuhan materi. Pembelajaran tersebut dapat mendorong peserta didik dalam mengembangkan teknik berpikir ke segala arah, mengingat, membuat catatan, meningkatkan motivasi serta dapat menyimpulkan hasilnya dengan baik. Kemampuan peserta didik dalam berpikir kritis dan kreatif, berkomunikasi serta berkolaborasi adalah kemampuan yang harus dikembangkan sejak dini untuk memasuki persaingan global. Penelitian ini bertujuan mendeskripsikan pembelajaran IPA berbasis mind mapping yang digunakan dalam pengembangan kemampuan peserta didik berpikir kritis, kreatif, komunikatif, dan kolaboratif; serta mengetahui perkembangan kemampuan berpikir kritis, kreatif, komunikatif, dan kolaboratif melalui pembelajaran IPA berbasis mind mapping. Bentuk penelitiannya adalah penelitian tindakan kelas dilaksanakan dalam 2 siklus menggunakan instrumen nontes yakni lembar observasi dan wawancara. Data yang diperoleh diolah secara deskriptif menggunakan analisis prosentase. Berdasarkan hasil analisis data, pembelajaran IPA berbasis mind mapping dapat membangkitkan motivasi dan minat belajar, berkomunikasi dan berkolaborasi, lebih kritis dan kreatif dalam mengonstruksi pengetahuan dan belajar lebih mudah. Pembelajaran IPA berbasis mind mapping dapat mengembangkan kemampuan berpikir kritis dan kreatif masing-masing sebesar 35%, komunikatif 40%, dan kolaboratif sebesar 35%
Pengaruh Model Snowball Throwing Dan Minat Terhadap Hasil Belajar Ilmu Pengetahuan Sosial Sekolah Dasar
Authors: Masria Ali
Published: August 2021

Penelitian ini melihat perbedaan pengaruh model Snowball Throwing, model konvensional dan minat belajar siswa terhadap hasil belajar. Jenis penelitian ini adalah penelitian eksperimen semu menggunakan pendekatan kuantitatif. Populasi siswa kelas IV Sekolah Dasar Negeri Gugus III Kecamatan Lembah Melintang, sampelnya adalah siswa kelas IV Sekolah Dasar Negeri 02 Lembah Melintang sebanyak 42 orang. 21 orang siswa pada kelas eksperimen dan 21 orang siswa pada kelas kontrol. Data dari hasil penelitian diperoleh dari tes hasil belajar siswa. Perbandingan X1 dan X2 terhadap Y adalah 16,25%, sedangkan persentase perbandingan X2 a dan X2 b terhadap Y adalah 16,82%. Hasil penelitian menunujukan bahwa terdapat pengaruh model Snowball Throwing dan minat terhadap hasil belajar Ilmu Pengetahuan Sosial di kelas IV Sekolah Dasar Negeri 02 Lembah Melintang.
Comparison of Mathematics Learning Outcomes of Students in Auditory Intellectually Repetition (AIR) and Reciprocal Teaching (RT) Learning Models
Authors: Mashuri Sufri , Jahring Jahring , Nasruddin Nasruddin , Djidu Hasan
Published: August 2021

The purpose of this study is to see the differences in the mean increase in student mathematics learning outcomes in the Auditory, Intellectually, Repetition (AIR) model and reciprocal teaching (RT) model. The sample in this study were 25 students as the experimental class 1 and 23 students as the experimental class 2. This research was an experimental study with a nonequivalent control group design. The data analysis used was descriptive and inferential analysis. The results of the descriptive analysis showed that the mean pretest score of the experimental class 1 was 51.64 and the posttest result was 70.88 with the increase in student mathematics learning outcomes reaching 0.39. While the mean pretest score of experimental class 2 was 36.52 and the posttest result was 70.48 with the increase in student mathematics learning outcomes reaching 0.51. The variance of the increase in mathematics learning outcomes in the experimental class 1 was 0.02, and the experimental class 2 was 0.01. The results obtained indicate that the increase in mathematics learning outcomes through the reciprocal teaching learning model is higher than the increase in student mathematics learning outcomes using the AIR learning model.
Developing Tematic Economic Comic with Characters for Early Childhood
Authors: Rahmatullah Rahmatullah , Inanna Inanna , Rakib Muhammad , Mustari Mustari , Rabania Rabania
Published: August 2021

This study aims to develop a character economy comic for early childhood. This research is a type of research development (Research and Development) includes 5 stages, namely needs analysis; Identify the material to be developed; Development; Production; as well as the Trial stage. After the product has been designed, a material expert will assess the feasibility of the material content developed in a comic character design, as well as a design expert to assess the feasibility of the design side, both in the structure and appearance of the images as outlined in designing thematic economic comics. The data analysis technique used qualitative descriptive analysis and quantitative descriptive analysis. The results showed that thematic economic comics were feasible to be developed and tested on users based on the results of due diligence by experts. The average value of the results of the material expert trial was 4.7, while the results of the design expert's assessment obtained an average score of 4.5. The two results of the assessment are in the very feasible category for use in the field trial phase. After conducting field trials on elementary school level students, an average score of 4.7 was obtained and was in the very feasible category. Thus, it can be understood that the character economy comics that are developed can be a supplement in learning, especially in fostering children's economic character from an early age
The Impact of Using Learning Media Robot Transporter toward Learning Outcome and Learning Gain of Students
Authors: Rizki Chandra Ainur , Buditjahjanto I Gusti Putu Asto , Suprianto Bambang
Published: August 2021

This study aims 1) to determine the validity and reliability of the robot transporter learning media instrument, 2) to know the differences in the student learning outcomes between the use of robot transporter and PowerPoint as learning media, and 3) to know how much the learning gain score from the use of these two media. A pre-test-post-test comparison group design type was used. A sample of 60 vocational students participated in two groups, the experimental group (N = 30) and the control group (N = 30). Â The results show that the robot transporter learning media is categorized as valid and reliable. The t-test result is 12.589 greater than the t table, namely 2.3596 with a significance of 0.05. Therefore, there is a difference in student learning outcomes. The mean of learning gain score on the robot transporter is 0.694, higher than the mean of learning gain score on the PowerPoint which is 0.289. The use of robot transporter as learning media can help students to be more interactively involved in learning. This is indicated by the students' post-test scores and the value of the gain learning in the experimental class was higher than the control class.
Therapeutic Plasma Exchange in Postpartum Hemolytic Uremic Syndrome: A Case Report
Authors:   Department of ImmunoHematology and Blood Transfusion Dayanand Medical College and Hospital
Published: August 2021

BACKGROUND AND AIM: Adult, non-infective, haemolytic-uremic syndrome (HUS) although a rare disease in itself, has a high likelihood of occurrence in pregnancy and immediate post partum period. It is an important differential diagnosis in the evaluation of thrombotic microangiopathies. Patients with post-partum HUS display a classical triad of microangiopathic haemolytic anaemia, acute nephropathy and thrombocytopenia. I hereby present a case of post partum HUS treated with therapeutic plasma exchange (TPE) MATERIAL AND METHODS: A total of six sessions of TPE were performed daily, three sessions for consecutive days and remaining three sessions were performed on alternate days. All the procedures were carried out with Haemonetics MCS+ exchanging one plasma volume using fresh frozen plasma and saline as replacement fluid. Haemodialysis was started and four sessions were carried out on alternate days. RESULT: A 37 year old, 85 kg female, G2 P1, underwent emergency LSCS because of foetal distress at 38 weeks of pregnancy. Post surgery she developed decreasing urine output, anuria ensued. Emergency therapeutic plasma exchange was carried out within 24 hours of diagnosis. It could be found that with TPE, patient had improvement in renal function, decrease in LDH levels and increase in platelet count. Patient had sustained remission and discontinuation of haemodialysis. CONCLUSION: HUS is a disorder with high mortality and long term morbidity, if prompt treatment is not instituted. The decision to intervene with plasma exchange should be based upon the severity of thrombocytopenia, microangiopathic haemolytic anaemia and neurological abnormalities, even if the diagnosis and nomenclature is uncertain. Improved survival after this disorder has been attributed to aggressive treatment with plasma exchange therapy.
Efficacy of an oral appliance in an adult Marfan syndrome patient with obstructive sleep apnea
Authors:   Department of Oral and Maxillofacial Surgery, Kindai University School of Medicine, 377-2, Ohno-higashi, Osaka-Sayama, 589-8511, Japan.
Published: August 2021

Marfan’s syndrome (MFS) is an autosomal dominant disorder that affects the body’s connective tissue, characterized by changes in three major connective tissue systems: the musculoskeletal, ocular, and cardiovascular systems. Individuals with MFS can develop severe cardiovascular complications., and the life expectancy of patients with MFS is markedly reduced as the effects of the disease on the aorta often lead to progressive dilatation, with subsequent dissection and rupture. Obstructive sleep apnea (OSA) is highly prevalent in patients with cardiovascular diseases. There is a high prevalence of OSA in patients with MFS due to craniofacial dysmorphism and increased upper airway collapsibility. A high prevalence of OSA has been reported in patients with MFS. To date, however, there are only a few case reports regarding the treatment of OSA in MFS patients. We present a treatment in an adult MFS patient with OSA using an oral appliance (OA). The patient was a 48-year-old Japanese woman of MFS, diagnosed with moderate OSA (apnea hypopnea index [AHI] = 27.0; lowest oxygen saturation [SaO2] = 78%; maximum apnea time = 114 s]). An OA was selected as the treatment option, and post-treatment sleep study indicated a reduction in AHI to 8.8/h with an improvement in other factors (lowest SaO2 = 84%; maximum apnea time = 66 s). Additionally, the treatment resulted in a reduction in BNP levels (81.3 from 110.2 pg/ml), and the patient’s cardiac function was stable over the period in which the patient received OA treatment. This study provides a basis for the future appropriate understanding and management of OSA of MFS patients.
EDUCATIONAL SURVEY ABOUT AWARENESS OF TONSILLITIS IN BABYLON PROVINCE
Authors:   1Professor PhD., College of Pharmacy, University of Babylon, Babylon, Iraq. phar.samah.ahmed@uobabylon.edu.iq, A. K. AL-jebory1 Samah
Published: August 2021

Tonsillitis is an infection or inflammation of the tonsils. Tonsillitis classified as acute, chronic (recurrent) and complication. Most often it is caused by a virus, but it may also be caused by the same bacteria that cause strep throat. According to numbers that data shows, the virus is more common, about 77.49% than bacterial which about 71.45% then fungal about 9.6%. The principal symptom of tonsillitis is a sore throat fever, swollen lymph nodes, nasal congestion, difficulty in swallowing and headache may also occur, according to if symptoms of tonsillitis are known or not, data show that they know about (119 of people) (79.3) this result is greater than unknown which was about 31 (20.7).
VISUAL CONTAMINATION WITH RANDOM ADVERTISEMENTS AND THE POSSIBILITY OF APPLYING FINES TO THEIR OWNERS
Authors:   Assistant Professor. Department of Commodity Evaluation and Service Performance, Market Research and Consumer Protection Center, University of Baghdad, Baghdad, Iraq. alsaffar2005@mracpc.uobaghdad.edu.iq, M. A. Alsaffar Nibras
Published: August 2021

Baghdad governorate has many areas of distinctive architectural and architectural character, which are heritage and valuable areas that we must preserve and take care of. But we see many manifestations of it, which have a negative impact on buildings, areas and roads, so that they distort the view and thus lead to visual pollution in general. The research examined the visual pollution from random advertising, which stretched buildings, walls, electricity poles and sidewalks. The study covered different areas of al-Karkh and al-Rassafa (Jadreya Bridge, Nation Square, Jordan Square, alkindy Street)Most of the distortions were the result of non-removable posters, Handwriting, election candidate advertisements or repeated advertisements. Then we could be reached to the advertis by the phone shown in the advertisement, the location of the advertiser or the advertiser's character and the imposition of financial fines for the purpose of removing the advertisement and not repeating it in the future.
PREPARATION OF POLYMERIC COMPOSITES FROM SATURATED POLYESTERS GLASS POWDER (FLOURSCENT) AND STUDY OF ITS MECHANICAL PROPERTIES
Authors:   1Researcher, Department of Chemistry, Collage of Education for Girls, University of Mosul, Mosul, Iraq. esraasaadhh@gmail.com, Waad Ala Esraa S.
Published: August 2021

In this study, polymeric composites were prepared from unsaturated polyester as a base material with glass powder (fluorescent) in different weight ratios (4, 6, 8, 10,and 11%) as a support material and after comparison before and after reinforcement of the prepared composites, an increase was found. In the values of mechanical properties (hardness, compressive strength), the shock resistance values decreased, but an increase in temperature leads to an increase in the values of shock resistance, as well as the values of compressive strength And it reduces the hardness value
IRAQI CONSUMER OPINION OF THE QUALITY AND SAFETY OF LOCAL FOOD PRODUCTS
Authors:   Professor PhD., Market Research and Consumer Protection Center, University of Baghdad, Baghdad, Iraq, alsoufim@mracpc.uobaghdad.edu.iq, A. Alsoufi Mohammed
Published: August 2021

The aim of this research was to indicate the opinion of the Iraqi consumer about the quality and safety of local food products, the questionnaire was included 19 questions for product quality, price, distribution and promotion as a tool to survey the opinions of 128 consumers in Baghdad, the data was analyzed by using percentage, weighted mean, and weight percent, the results obtained showed that the Iraqi consumer prefer local food products for their high quality and appropriate price, however they need attention to packaging, promotion and distribution.
RATE CONSTANT OF SOME AMINO DERIVATIVES DISSOCIATION
Authors:   1Department of Chemistry, Faculty of Science, Sirte University, Sirte, Libya. anud_2010@yahoo.com, A. Efhema1 Anud  M.
Published: August 2021

Amino glycoside derivation including, Neomycin, Streptomycin, Kanamycin and Gentamycin with special reagents, which are benzoylchloride; benzene sulfonyl chloride and phthalic anhydride were made to enhance Uv-detectability for HPLC analysis. But there are many problems facing pre column derivation and in order to solve this, the conductivity of antibiotic derivatives were used to calculate the dissociation constant and the hydrolysis rate which determined concern type reaction. In addition the characteristics those controlling the hydrolysis of antibiotic-derivatives were investigated.
Associations between Traditional and Digital Leadership in Academic Environment: During the COVID-19 Pandemic
Authors: Antonopoulou Hera , Halkiopoulos Constantinos , Barlou Olympia , Beligiannis Grigorios N.
Published: August 2021

Objectives: Notably, as a result of the unique circumstances that the global population is facing (Covid-19), there has been an increase in interest in educational leadership science, particularly in academic environment, with the aim of enhancing an ecosystem that is inclusive, open to change, monitoring, and often unforeseen challenges. Of the various types of educational leadership, transformational leadership is recognized as the most suitable for use in academic environment. It focuses on the division of leadership responsibilities among academics with varying skills in order to handle collectively the spectrum of leadership responsibilities needed in a variety of contexts. Methods/Analysis: This perspective is embodied in this study paper, which examined the degree to which members of the Senate of three Universities of Greece, engaged in three distinct types of leadership (transformational leadership, transactional leadership, and leadership to be avoided) via digital leadership. The findings were interpreted using descriptive, diagnostic, predictive and prescriptive data analysis algorithms. Findings: The findings indicate that participants demonstrate a high level of Transformational and Transactional Leadership. They demonstrated a high level of Digital Leadership while avoiding Passive - To Avoid Leadership. The study demonstrates that Digital Leadership has a relatively favorable association with the leadership outcome, which is translated as a high level of performance and satisfaction coexisting with a high level of digital leadership execution. Novelty /Improvement: The research project indicates that a good leader who practices transformational leadership and is prepared with the necessary digital skills would be more effective in carrying out administrative responsibilities in an academic environment. Doi: 10.28991/esj-2021-01286 Full Text: PDF
The Influence of Optimism Bias on Time and Cost on Construction Projects
Authors: Chadee Aaron , Hernandez Salisha R. , Martin Hector
Published: August 2021

The unresolved scholarly debate to curtail cost and time performances in projects has led to alternate solutions, departing from the dominant technical school of thought to include concepts from behavioural sciences. In this paper, we consider the psychological effect, namely optimism bias, as one of the root causes for delays in cost overruns on projects. The research objectives were to determine the level of bias among project participants, rank time and cost overrun causes according to the participants’ bias score and establish a mitigation strategy to curb potential delays and cost overrun impacts based on the bias scores obtained. A literature survey was conducted to determine causal factors contributing to delays and cost overruns linked to optimism bias. Through a pilot survey of three semi-structured interviews, eighty factors obtained from the literature survey were reduced to 24 critical delay and cost overrun factors relevant to Trinidad and Tobago. A questionnaire was subsequently developed seeking construction professionals to rate their bias scores based on an 11-point Likert scale. The research confirms that project planners and decision-makers exhibit moderate levels of optimism bias; however, participants lacked awareness of the impact of optimism bias on projects outcomes. Project location, environmental impacts and historic preservation, and labour disputes are the top three critical factors where project professionals displayed increased optimistic tendencies. It is proposed that contingency “time window” and reference class forecasting be implemented as control mechanisms to mitigate the impacts of time and cost overruns on projects. This research introduces a novel method to account for and measure optimism bias on construction projects. This study adds knowledge into delays and cost overruns causation and provides a foundation for future studies on quantifying psychological effects on projects and enhancing overall project management practices. Doi: 10.28991/esj-2021-01287 Full Text: PDF
Modeling Contaminant Transport of Nitrate in Soil Column
Authors: Ekeleme Anthony Chibuzo , Ekwueme Benjamin Nnamdi , Agunwamba Jonah Chukwuemeka
Published: August 2021

Soil forms solution when it is in contact with water or any liquid. This soil solution disperses into the ground in different parts, at different velocities. Hence, the chemical contents of the soil are leached gradually from soil with infiltrating water. Soil parameter characterizing this phenomenon is referred to as Solute dispersivity. The objective of this study is to model contaminant transport of nitrate in soil, calibrate and verify the model derived. Dispersion studies were performed in the laboratory using soil columns filled with silver nitrate (AgNO3) solution. Samples were collected from the column outlet at intervals of 5minutes and the dispersion coefficient calculated. The dispersion coefficient calculated was incorporated into existing Notordamojo’s model and solved. Results obtained from the research showed that the R2values ranging from 0.741 to 0.896 and 0.484 to 0.769 were obtained for the modified model and the existing Notordamojo’s model respectively. The model verified with the experimental data showed predicted transport was in close agreement with experimental values having coefficient of correlation (r) ranging from 0.86 to 0.98. The difference between the experimental and predicted results, when expressed as a percentage of the experimental value was less than 5%. The study has established that the modified model which accounted for variability in dispersion coefficient offered a better approach than the conventional one. Doi: 10.28991/esj-2021-01290 Full Text: PDF
Evaluation of Reverse Logistics in Challenges within the Manufacturing Pharmaceutical Companies
Authors: Makaleng Mpho Sharon Makgedi , Lambert Keith Richard
Published: August 2021

The link between reverse logistics and logistics is being increasingly noted by logistics experts and researchers globally, especially in manufacturing pharmaceutical companies. This has led to the examination of reverse logistics challenges in manufacturing pharmaceutical companies. The main objective was to examine reverse logistics challenges in manufacturing pharmaceutical companies in the City of Tshwane (South Africa). The study aimed to find approaches to deal with the challenges of reverse logistics such as gatekeeping, managerial implications, technology, waste elimination, transportation, and product recalls within the industry. The study was empirical, and a quantitative approach was used. Furthermore, data analysis was conducted by using the Stata V13 statistical software where a descriptive analysis was employed. Questionnaires were posted via SurveyMonkey to the staff at fifty pharmaceutical companies. This resulted in a total of 127 respondents, which provided a response rate of 51%. The findings indicated that manufacturing pharmaceutical companies face a variety of challenges; such as lack of skills and skills transfer, transport, and gatekeeping (amongst others), when dealing with reverse logistics. It is thus recommended that processes and strategies involved in reverse logistics should be known and taken into consideration because of the importance of reverse logistics in manufacturing pharmaceutical companies. Doi: 10.28991/esj-2021-01291 Full Text: PDF
Disputa por el territorio de trabajadores sexuales trans: territorio, cuerpo y género en la zona rosa de La Mariscal, Quito
Authors: Paula Christian Alexander , Almeida Milena , López Eduardo
Published: August 2021

La presente investigación aborda la movilidad de lxs trabajadoras sexuales Trans, en la Zona Rosa de la Mariscal y la disputa por el territorio frente a la normativa municipal. Este trabajo realiza un acercamiento teórico desde el transfeminismo y el feminismo reglamentario en conjunto con los Estudios Urbanos, utiliza el método cualitativo mediante el uso la Cartografía Social como herramienta que permite el entendimiento y la problematización de los territorios sociales, subjetivos, geográficos que posibiliten reconstruir la experiencia de vida de las trabajadoras sexuales en el ejercicio de su derecho a la ciudad, influenciado por las regulaciones municipales de uso del espacio público, patrimonio, turismo y  comercio.
PENGONTROL SUHU RUANGAN BERBASIS ARDUINO 2560
Authors: Putri Asti Riani , Rahayu Putri Nur , Ginantaka Yayak Yogi
Published: August 2021

Perkembangan teknologi dan ilmu pengetahuan saat ini semakin pesat. Hal ini dilakukan bertujuan untuk mempermudah pekerjaan manusia sehari – hari. Menciptakan alat yang sebelumnya belum pernah ada hingga pengembangan alat yang telah ada sebelumnya demi untuk menyempurnakan fungsi dan manfaatnya Seperti halnya kebutuhan peralatan yang didukung oleh teknologi juga sangat dibutuhkan karena dapat membantu dan mempermudah mausia dalam menjalan tugasnya atau meringankan beban manusia. teknologi ini akan melibatkan mikrokontroler ,sensor dan artifial intelegent. Maka tujuan dari di lakukannya penelitian ini adalah membuat sistem pengontrol suhu ruangan berbasis arduino 2560 . pengendali dan monitoring suhu secara otomatis menggunakan sensor DHT22 sebagai pengukur suhu dan kipas (fan), serta lampu pijar sebagai pensetabil suhunya. Metode yang digunakan dalam sistem pengaturan suhu dengan menggunakan fuzzy logic. Fuzzy logic merupakan salah satu metode sistem kendali yang dapat memberikan keputusan menyerupai manusia. Dengan menentukan membership dan aturan fuzzy logic didalam mikrokontroler sebagai otaknya maka temperatur dapat diatur secara otomatis. Dalam sistem kendali fuzzy logic menghasilkan keluaran (output) berupa PWM yang digunakan untuk mengatur putaran pada kipas (fan)sehingga suhu dapat tercapai sesuai dengan set point yang telah ditentukan yaitu 35?C. Hasil yang diharapkan yaitu membuat suatu sistem pengontrol suhu ruangan berbasis arduino 2560  ,sehingga kita bisa mengontrol suhu ruangan dengan stabil.
CLOUD STORAGE DENGAN TEKNOLOGI KUBERNETES UNTUK PLATFORM COLLABORATIVE RESEARCH
Authors: Nugroho Muhammad A. , Kartadie Rikie
Published: August 2021

Memberikan model alternatif untuk penerapan penelitian kolaboratif melalui layanan teknologi komputasi awan yang diim- plementasikan di lingkungan komputer lokal atau untuk menampung penyimpanan file di luar lokasi, penggunaan berbagi file  cloud sangat bermanfaat dan mudah. Penggunaan teknologi ini harus diimplementasikan dan diuji keandalannya dalam skala    yang baik sehingga jika akan dikembangkan lebih lanjut dapat segera diimplementasikan dan sesuai dengan lingkungan dan  sumber daya jaringan yang ada. Penelitian ini berfokus pada implementasi dan pengujian performa kecepatan dan user request  yang menghasilkan nilai A pada uji kecepatan pada GTMetrix dan load peak tertinggi connection time 0-5ms. Solusi terhadap penurunan performa dapat disolusikan dengan menggunakan model scaling dikombinasikan dengan proxy, dan load balancing.
PREDIKSI PENJUALAN PRODUK UNILEVER MENGGUNAKAN METODE K-NEAREST NEIGHBOR
Authors: Alfani W.P.R. Aisha , Rozi Fahrur , Sukmana Farid
Published: August 2021

Toko Rizky Barokah Nganjuk merupakan sebuah toko retail semi grosir yang terletak di Kelurahan Bogo Kabupaten Nganjuk Jawa Timur. Toko ini menjual berbagai macam produk kebutuhan rumah tangga diantaranya dari Unilever, PG, Nestlé, dan Indofood. Dilihat dari banyaknya permintaan konsumen akan produk Unilever berdasarkan data 3 tahun terakhir, maka dibutuhkan prediksi untuk penjualan produk Unilever terlaris. Hal ini berguna untuk mempermudah pihak pemilik toko dalam perencanaan penyediaan stok. Untuk mengetahui penjualan produk Unilever terlaris digunakan teknik klasifikasi data mining dan algoritma K-Nearest Neighbor. Hasil dari penelitian ini berdasarkan nilai akurasi tertinggi terhadap klasifikasi penjualan produk sebesar 86,66% dan nilai akurasi terendah terhadap klasifikasi penjualan produk sebesar 40%.
Hambatan Kognitif Mahasiswa Dalam Proses Pembuktian Berdasarkan Toulmin’s Argumentation Pattern
Authors: Aini Dewi Nur , Rofiki Imam
Published: August 2021

Penelitian ini bertujuan untuk mengidentifikasi hambatan kognitif mahasiswa dalam menyusun pembuktian matematis berdasarkan Toulmin’s Argumentation Pattern (TAP). Penelitian ini menggunakan pendekatan kualitatif dengan jenis penelitian deskriptif. Subjek penelitian adalah 15 mahasiswa pendidikan matematika di Malang. Instrumen penelitian meliputi peneliti sebagai instrumen utama, soal tes pembuktian dan pedoman wawancara. Data yang diperoleh kemudian dianalisis dengan mengunakan TAP untuk mengetahui hambatan kognitif mahasiswa. Hasil penelitian ini menunjukkan bahwa mahasiswa masih banyak yang mengalami hambatan kognitif dalam proses pembuktian matematis seperti kurangnya pemahaman materi prasyarat, ketidakmampuan untuk mengomunikasikan pembuktian secara matematis, kurang tepat dalam membuat claim, kurang bisa memberikan rebuttal, kurang bisa memberikan warrant deduktif, dan belum dapat membedakan data yang diketahui dan yang akan dibuktikan.
Etnomatematika: Eksplorasi Kebudayaan Mbojo Sebagai Sumber Belajar Matematika
Authors: Sutarto Sutarto , Ahyansyah Ahyansyah , Mawaddah Sukma , Hastuti Intan Dwi
Published: August 2021

Penelitian ini bertujuan untuk mengeksplorasi unsur budaya suku mbojo yang terdiri atas rumah tradisional uma (rumah) lengge, tembe (sarung) nggoli, alat musik tradisional genda, uma (rumah) jompa, dan kegiatan jual beli masyarakat suku mbojo di pasar. Metode yang digunakan dalam penelitian ini adalah penelitian kualitatif eksplorasi dengan pendekatan etnografi. Pada pendekatan etnografi, peneliti perlu menggali suatu konsep atau masalah dengan menelaah suatu kejadian atau peristiwa. Penelitian kualitatif mendeskripsikan dan memahami suatu fenomena sosial yang berada di sekitar lingkungan masyarakat. Metode penelitian yang digunakan untuk memperoleh data berupa wawancara, eksplorasi, observasi, dan dokumentasi yang dilakukan oleh peneliti. Hasil penelitian menunjukkan bahwa; (1) pada tembe (sarung) nggoli terdapat konsep matematika yaitu geometri transformasi, segitiga samasisi, segiempat “belah ketupat”; (2) pada uma jompa terdapat konsep matematika yaitu bangun ruang gabungan kubus dan prisma segiempat, persegi panjang pada beberapa bagian penyusun uma jompa; (3) pada kegiatan jual beli masyarakat suku mbojo terdapat konsep matematika yaitu konsep pengukuran
Pengembangan Media Pembelajaran Matematika Berbasis Augmented Reality (AR) Pada Materi Transformasi Geometri
Authors: Listiawan Tomi , Antoni Antoni
Published: August 2021

Penelitian ini bertujuan untuk mengembangkan media pembelajaran matematika berbasis Augmented Reality pada materi Transformasi Geometri untuk Siswa SMK Kelas XI dan mengetahui kelayakan Media Pembelajaran berdasarkan penilaian ahli media, ahli materi dan pendapat siswa. Penelitian ini merupakan penelitian pengembangan atau Research and Development yang diadaptasi dari model pengembangan ADDIE. Validasi dilakukan oleh ahli media dan ahli materi dari unsur Dosen Universitas Bhinneka PGRI dan Guru SMKN 2 Boyolangu. Media yang dikembangkan di uji cobakan kepada 34 siswa kelas XI Perbankan 2 SMKN 2 Boyolangu. Hasil penelitian menunjukkan bahwa tingkat kelayakan media pembelajaran matematika berbasis Augmented Reality pada materi Transformasi Geometri berdasarkan penilaian: 1) Ahli media diperoleh total skor 57 dan jika dipersentasekan mendapat nilai 71,25%, sehingga termasuk kategori “Layak”,  2) Ahli materi diperoleh total skor 50 dan dipersentasekan mendapat nilai 62,5%, sehingga termasuk kategori “Layak”, dan 3) Ahli materi yang kedua memberikan skor 73 jika dipersentasekan mendapat nilai 73,75%, sehingga termasuk kategori “Layak”. Keseluruhan angket siswa mendapat respon dengan prosentase 85,46% dengan kategori “Sangat Layak”.  Dan dari segi individu respon siswa memiliki prosentase ?71,15% dengan kategori “Layak”.
Çok hisseli tarım arazilerinde yaşanan sorunlar: Adana-Seyhan örneği
Authors: DÖNMEZ İlknur
Published: August 2021

Bu çalışmanın öncelikli amacı Türkiye’deki tarım arazilerinde küçülme ve parçalanma sorununa dair genel bir durum analizi yapıldıktan sonra, bu sorunu Adana ili ve Seyhan ilçesinden örneklerle incelemektir. Teorik incelemeler ve alan çalışmalarının sonuçlarına göre paylı mülkiyet ve özellikle çok hisselilik kırsal alanda önemli sorunlara neden olmakta ve arazi kaynaklarının etkin kullanımına imkân vermemektedir. TÜİK, MEGSİS ve TAKBİS verileri ile yapılan nicel analizlere göre hisselilik oranı Türkiye genelinde %43, Adana’da %42 ve Seyhan’da %62 olarak gerçekleşmiştir. Parçalanma sorununun analizinde, parsel başına düşen hissedar sayısı, hisseye düşen ortalama tarım arazisi alanı, işletme büyüklüğü ve bir işletmenin kaç parselden teşekkül ettiği gibi hususlar dikkate alınmıştır. Tarım arazilerinde çok hisselilik veya parçalanmanın en büyük etkisi verimlilik üzerinde olmaktadır. Bu nedenle Türkiye genelinde seçilmiş bazı ürünlerin ekilen alan ve üretim miktarı verilerinin analizi yapılmıştır. 2001 yılından 2020 yılına kadar olan periyot incelenmiş ve bu süreçte yapılan hukuki düzenlemelerin ne parçalanmayı önlemede ne de üretimi ve ekilen alanı artırmada etkin çözümler sunmadığı tespit edilmiştir. Çalışma alanında çiftçilerle yapılan anket çalışmasında çiftçilerin parçalı mülkiyete dair görüşleri ve yaşadıkları sorunlar tespit edilmiş ve betimsel analiz yöntemi ile yorumlanmıştır. Bu bağlamda devletin müdahalesi zorunlu görünmektedir; toplulaştırma çalıştırmalarına önem verilmekle birlikte, hisse toplamı yeter gelirli tarımsal arazi büyüklüğünü sağlamayan hissedarların hisseleri uygulama öncesi taşınmaz değeri üzerinden kamulaştırılarak hazineye aktarılmalı ve sonrasında bölgedeki çiftçilere öncelik vermek kaydıyla satışa ve kiralamaya sunulmalıdır. Ayrıca tarımsal arazilere ilişkin hukuki düzenlemelerin de oldukça dağınık olduğu görülmektedir. Bu nedenle daha bütüncül ve anlaşılabilir hukuki düzenlemelere ihtiyaç duyulmaktadır.
Efficiency of composted vinasse in the production of basil (Ocimum basilicum L.) under greenhouse conditions
Authors: TAVALI İsmail Emrah , YALÇIN ELİDEMİR Ayşe , ÇINAR Ahu , AŞIKLI Safiye , ÇINAR Orçun , KARADENİZ YAVUZ Feyza , UYAR Serkan
Published: August 2021

The aim of this study was to determine the effectiveness of vinasse, which is known to be a good source of organic matter and potassium in the production of an aromatic plant. In this context, the vinasse, which is a food industry waste, was composted and applied to the soil alone and mixed with chemical fertilizers in different doses [Only chemical fertilization-control (C), vinasse compost 0.5 t ha-1 (VC-0.5), vinasse compost 0.5 t ha-1 + chemical fertilization 0.5 t ha-1 (VC-0.5+CF), vinasse compost 1 t ha-1 (VC-1), vinasse compost 1 t ha-1 + chemical fertilization 1 t ha-1 (VC-1+CF)] and thus, basil (Ocimum basilicum L.) was produced under greenhouse conditions. Plants were harvested three times in a row when they reached the flowering period. Morphological (number of branches, flower spike height, plant height, fresh weight), agronomic (green herb/drug yield, dry weight) and technological (essential oil ratio, essential oil composition, color value) parameters were examined in the harvested samples. According to the results obtained; while the highest fresh weight, green herb yield and dry weight were obtained by VC+CF, the highest essential oil ratio in the plant was observed in VC. The striking point here is that these results were obtained with 0.5 t ha-1 application rate of the compost. The findings obtained from this study reveal that the compost can be used in basil cultivation together with chemical fertilization.
The population dynamic of honeydew moth [Cryptoblabes gnidiella Mill. (Lepidoptera: Pyralidae)] in vineyard in Antalya
Authors: KEÇECİ Mehmet
Published: August 2021

The present study was conducted to determine some biological criteria such as the first appearance of adults, peak date, and a number of generation for controlling honeydew moth in vineyard in Antalya province, Turkey during 2014 and 2015. In this study, the adult population was determined by pheromone traps and larval population was observed by counting the larvae on the grape clusters. It was determined that the pest adults were first seen in mid-April; however, the population was at very low levels until mid-June. It was demonstrated that the adult population of the pest could generate 4 peaks in June, July, August and September-October. The study results showed that the pest could be important in coastal vineyards. Besides, it has been showed that the effective temperatures sum based on the degree day model that was proposed in the literature could be employed to determine the honeydew moth adult and larval populations in vineyards.
Mevsimlik gezici tarım işçiliğinde tarım aracılığının rolü: Giresun ili fındık örneği
Authors: YILMAZ Merve , SAYIN Cengiz , BOZOĞLU Mehmet
Published: August 2021

Türkiye’de tarım sektöründe, mevsimlik tarım işçilerinin istihdamında tarım aracıları önemli rol oynamaktadır. Tarım aracısı, işveren ve işçi ilişkileri ‘’Tarımda İş Aracılığı Yönetmeliği’’ ile düzenlenmiştir. Yönetmeliğe göre tarım aracısı; tarımda iş ve işçi bulma aracılığı görevini yapmak üzere izin verilen gerçek veya tüzel kişilerdir. Bu çalışmanın amacı; fındık tarımında faaliyet gösteren tarım aracılarının çalışma şekillerini, tarım aracısı-işçi-işveren ilişkilerini ortaya koymak ve ilişkileri düzenleyecek öneriler geliştirmektir. Bu çalışmanın ana materyali; 2015 yılında Giresun ili Merkez, Bulancak, Tirebolu ve Espiye ilçelerinde, kartopu örnekleme yöntemiyle belirlenmiş 29 adet mevsimlik gezici tarım işçisi ve 47 adet işveren ile yüz yüze görüşmeye dayalı anketlerden elde edilmiştir. Araştırma bulgularına göre; tarım aracıları, fındık işçilerinin günlük yevmiyesi üzerinden %5-10 arasında değişen oranlarda ücret almaktadır. Ancak ücretin işçiden tahsis edilmesi mevcut yönetmelik hükümlerine uymamaktadır. Mevsimlik gezici işçiler, iş bulma ve ücret garantisi olduğu için tarım aracısı ile çalışmayı tercih etmektedir. Bu bakımdan tarımsal istihdama katkısı önem taşımaktadır. Tarım aracılığı sistemi, sadece mevsimlik işçiler için değil aynı zamanda işverenler için de önem arz etmektedir. Ancak uygulamada; aracı, işçi ve işveren arasındaki ilişkilerde aksaklıklar olup, bunlar genellikle aracıların denetim eksikliğinden kaynaklanmaktadır. Mevcut tarım aracılığı sisteminin yasal yapılanması, ihtiyacı karşılayacak düzeyde olmasına karşın, uygulamanın daha etkin denetlenmesi ile sorunlar önemli ölçüde çözülebilecektir.
Kuzey Kıbrıs Türk Cumhuriyeti’nde kullanılan damla sulama sistemlerinde tıkanıklık düzeyi ve performans değerlendirmesi
Authors: TEKİN Servet , GÜMÜŞSOY Hale , BOZOĞLU Gülşah
Published: August 2021

Çalışma, damla sulama sistemlerinin performans ve tıkanıklık düzeylerini belirlenmesi amacıyla 2018 yılında Kuzey Kıbrıs Türk Cumhuriyeti (KKTC) ilçeleri olan Güzelyurt, Lefkoşa 3, Girne, İskele ve Gazimağusa bölgelerinde toplam 17 üreticiye ait tarımsal işletmelerde yürütülmüştür. Yapılan çalışma geniş kapsamlı olup ada genelinde damla sulama sistemini kullanan üreticiler örnek alan olarak belirlenmiştir. Çalışmada bölgeler; Güzelyurt “GY”, Lefkoşa “L”, Gazimağusa “GM”, Girne “G” ve İskele “İ” simgeleri ile gösterilmiş ve üretici ismi (1, 2, 3 ve 4) rakamla ifade edilerek konular oluşturulmuştur. Çalışma bölgesinde ki üreticilere ait damlatıcı yapım farklılık katsayısı değerleri çok düşük ve istenmeyen sınır değerlerinin altında çıkmıştır. Çalışmada damlatıcı türdeşlik değeri en düşük %60.2 ile GM4 üreticisinde, en yüksek değer %89.1 ile G1 üreticisinde elde edilirken, en düşük istatistiksel damlatıcı üniformite değeri %49.5 ile GM1 ve en yüksek %89.1 ile GY1 üreticindeki damla sisteminden elde edilmiştir. Çalışmada bölgelerindeki üreticiler sulama kaynağı olarak Güzelyurt akiferini kullanmaktadır. Güzelyurt akiferi bölgesine düşen yağış miktarının düşük olması, yöredeki çiftçilerin aşırı akiferden su çekmesi ve denizden akifere tuz taşınımlarının artması akifer suyunun tuzlanmasına neden olmaktadır. Bölgede damla yönteminde akiferden suyun kalitesinin düşük ve denetim birimindeki arıtma fitrelerinin arıtmada yetersiz olmasından dolayı sistemini performansını etkilediği ve tıkanmalara neden olduğu belirlenmiştir.
İzmir ilinde özel bir işletmede yetiştirilen simental ineklerde somatik hücre sayısı, süt verimi ve bileşenleri arasındaki ilişkiler
Authors: ÖNAL Ahmet Refik , ÖZKAN Mahmut , TUNA Yahya Tuncay
Published: August 2021

Araştırmada Simental ırkı sığırlardan elde edilen çiğ sütlerin bileşenleri ile SHS ve GOSV üzerine ay, laktasyon sırası ve mevsimin etkisi ile SHS ve ilgili özellikler arasındaki ilişkilerin belirlenmesi amaçlanmıştır. Çalışma 50 baş sağmal kapasiteye sahip bir işletmede yürütülmüştür. İşletmede aylara göre ortalama sağmal hayvan sayısı 34.12 baştır. Sütlerin yağ, protein, kuru madde, laktoz içerikleri ile somatik hücre sayıları (SHS) belirlenmiştir. Çiğ süt örneklerinin yıl boyu yağ, protein, kuru madde ve laktoz içerikleri sırasıyla %3.72, %3.45, %13.55 ve %4.74 olarak bulunmuştur. Ortalama SHS ve günlük ortalama süt verimi (GOSV) sırasıyla 192x103 hücre ml-1 ve 30.89 l gün-1 olduğu tespit edilmiştir. En yüksek SHS içeriği 4. laktasyon ve en düşük SHS içeriği 1. laktasyondaki hayvanlardan elde edilen sütlere ait olduğu tespit edilmiştir. Mevsime göre SHS ve GOSV hariç diğer tüm gruplarda istatistik fark belirlenmiştir (P<0.01). Mevsime göre en yüksek yağ içeriğinin kış ve ilkbahar en düşük yağ içeriğinin sonbahar ve yaz mevsimlerinde ait olduğu belirlenmiştir. Laktasyon sırasına göre SHS ile GOSV arasında 4. laktasyon sırası hariç, diğer laktasyon gruplarında negatif yönlü bir ilişki olduğu, bu ilişkinin 2. laktasyonda önemli olduğu belirlenmiştir (P<0.01). Laktasyon sırasına göre genel olarak SHS ile süt yağ, protein ve kuru madde içerikleri arasında pozitif yönde korelasyonlar dikkati çekmektedir. Mevsime göre SHS ile GOSV arasında kış mevsimi hariç negatif yönlü ve ilkbahar mevsimi için bu ilişkinin önemli olduğu gözlenmiştir (P<0.01). Mevsime bağlı olarak SHS ile yağ, protein ve kuru madde arasındaki ilişkiler pozitif yönlü ve istatistiki olarak anlamlı bulunmuştur (P<0.01).