bluuebunny/crossref_metadata_2025 huggingface dataset:
ANALISIS FAKTOR YANG MEMPENGARUHI TINGKAT PENGANGGURAN DI KOTA TARAKAN
Authors: Hasbi Hasbi , Palungan Pither
Published: October 2021

Tujuan penelitian ini adalah untuk mengetahui pengaruh upah, inflasi, pertumbuhan ekonomi dan pertumbuhan penduduk terhadapa tingkat penganguran di Kota Tarakan selama priode 2007-2016. Dengan data yang di peroleh dari Dinas Ketenagakerjaan dan perindustria, Badan Pusat Statistik (BPS) Kota Tarakan. Permasalahan yang diangkat dalam penulisan ini adalah Analisis Mengenai upah, inflasi, pertumbuhan ekonomi dan pertumbuhan penduduk apakah berpengaruh terhadap tingkat Pengangguran di Kota Tarakan secara Parsial dan simultan. Tujuan dari penelitian ini adalah untuk mengetahui seberapa besar pengaruh upah, inflasi, pertumbuhan ekonomi dan pertumbuhan penduduk terhadap tingkat pengangguran di Kota Tarakan secara Parsial dan simultan. Alat analisis yang digunakan dalam penelitian ini adalah Analisis Regresi Linear Berganda dengan bantuan Program Statistical Package Forsocial Sciense (SPSS) Versi 16.0 Hasil penelitian secara parsial bahwa tingkat upah, inflasi, pertumbuhan ekonomi dan pertumbuhan penduduk berpengaruh signifikan terhadapa tingkat pengagguran di Kota tarakan. Sedangkan hasil dari penelitian secara simultan hanya variabel upah yang berpengaruh signifikan terhadap tingkat pengagguran di Kota Tarakan, sedangkan variabel inflasi, perumbuhan ekonomi dan pertumbuhan penduduk tidak berpengaruh signifikan terhadapa tingkat pengangguran di Kota Tarakan. Di mana koefisiensi regresi upah terhadap tingkat pengagguran 49,68% koefisiensi regresi inflasi terhadap tingkat pengagguran 3,3%, koefisiensi regresi pertumbuhan ekonomi terhadap tingkat pengagguran 21,6% dan koefisiensi regresi pertumbuhan ekonomi terhadap tingkat pengagguran 11,6%.
analisis strategi pengembangan dan uji kelayakan usaha kecil menengah amplang ikan di kota tarakan
Authors: Anwar Syaiful , Narmiana Narmiana
Published: October 2021

Abstrak : Penelitian ini bertujuan untuk mengetahui strategi dan analisis yang digunakan dalam pengembangan usaha amplang ikan di Kota Tarakan. Jenis penelitian ini yaitu penelitian deskriptif dengan menggunakan pendekatan kualitatif dan kuantitatif. Populasi dalam penelitian ini adalah seluruh pengusaha amplang yang ada di kota Tarakan baik terdaftar di dinas yang terkait maupun tidak. Adapun populasi penelitian ini berjmlah 14 orang dengan pengambilan sampel menggunakan teknik sampel  jenuh atau teknik sampel sensus dimana semua populasi dijadikan sampel, dan data penelitian ini menggunakan data primer dan data sekunder.  Berdasarkan hasil penelitian ini diketahui bahwa kelayakan finansial dilihat dari BCR (Benefit Cost of Ratio) sebesar 1.03, NPV (Net Present Value) sebesar 172.927.700,60, FRR (Financial Rate of Return) sebesar 98,51%, PBP (Pay Back Period) sebesar 1,02 dan BEP (Break Even Point) dasar harga unit sebanyk 15,000 bungkus dan dasar harga penjualan sebesar Rp18.000.000. Berdasarkan kriteria kelayakan yang telah ditentukan dapat dikatakan bahwa UKM amplang ikan di Kota Tarakan layak untuk di operasionalkan. Sedangkan tahapan analisis yang dilakukan yaitu dengan melihat kondisi internal dan eksternal perusahaan dengan cara analisis situasi dengan kata lain yaitu analisis SWOT, dengan melalui tahapan IFE (Internal Faktor Evaluation), EFE (Eksternal Faktor Evaluation), diagram SWOT dan Matriks SWOT. Hasil analisis data menunjukkan bahwa strategi yang digunakan yaitu strategi Agresif atau strategi SO (strength-Opportunity).
IDENTIFIKASI DAN STRATEGI PENGUATAN KEARIFAN LOKAL USAHATANI PADI SAWAH TADAH HUJAN DI DESA LONG MIDANG
Authors: Hendris Hendris , Sirait Sudirman
Published: October 2021

AbstractFor their food needs, the people in Long Midang Village still apply traditional values or local wisdom in the utilization and processing of rice cultivation, especially rainfed lowland rice. This research aims to identify local wisdom that has existed and still being maintained, knowing the factors that cause local wisdom to be maintained or abandoned, and formulating strategies to maintain local wisdom. This study uses a qualitative descriptive analysis method and SWOT analysis tool, data obtained through in-depth interviews. The results showed there are 38 local wisdoms in Long Midang Village, 22 local wisdoms are retained while 16 local wisdoms are removed, the factors that cause local wisdom have been maintained are the availability of organic fertilizers, the use of cheaper traditional tools, land preservation and respect for ancestral heritage. The factors that cause local wisdom have been abandoned are changes in insight/knowledge and more efficient modern technology. Strategies to strengthen local wisdom using aggressive strategies (S-O) namely increasing the use of buffalo in cultivating land as a cost-effective and environmentally friendly local wisdom as well as maintaining mutual cooperation wisdom. Key words: Local Wisdom, Rainfed Rice, SWOTAbstrakDalam memenuhi kebutuhan pangannya, masyarakat di Desa Long Midang masih memegang kuat nilai-nilai tradisi adat atau kearifan lokal yaitu dalam pemanfaatan dan pengolahan budidaya padi khususnya padi sawah tadah hujan. Penelitian ini bertujuan untuk mengidentifikasi kearifan lokal yang pernah ada dan yang masih dipertahankan, mengetahui faktor-faktor yang menyebabkan kearifan lokal terus dipertahankan atau ditinggalkan, dan merumuskan strategi dalam mempertahankan kearifan lokal. Penelitian ini menggunakan metode analisis deskriptif kualitatif dan alat analisis SWOT, data diperoleh melalui wawancara mendalam. Hasil penelitian menunjukkan kearifan lokal di Desa Long Midang berjumlah 38, kearifan lokal yang dipertahankan sebanyak 22 sedangkan kearifan lokal yang ditinggalkan sebanyak 16, faktor-faktor penyebab kearifan lokal di pertahankan adalah tersedianya pupuk organik, penggunaan alat-alat tradisional yang lebih murah, kelestarian lahan dan penghargaan terhadap warisan leluhur. Faktor-faktor penyebab kearifan lokal ditinggalkan adalah perubahan wawasan/pengetahuan dan perkembangan teknologi modern yang lebih efisien. Strategi penguatan kearifan lokal menggunakan strategi agresif (S-O) yaitu meningkatkan penggunaan kerbau dalam pengolahan lahan sebagai salah satu kearifan lokal yang hemat biaya dan ramah lingkungan serta mempertahankan kearifan gotong royong.Kata kunci: Kearifan Lokal, Sawah Tadah Hujan, SWOT
Kajian Faktor-Faktor yang Berhubungan dengan Kelelahan Pengemudi Saat Mudik
Authors: Kholid Ahmad
Published: October 2021

Mudik merupakan proses migrasi dan juga simbol kultur yang terjadi pada masyarakat Indonesia. Dari esensi sosiologisnya, tradisi mudik ini berhubungan dengan terjadinya interaksi sosial. Mudik juga erat kaitannya dengan aspek kekeluargaan, di mana mudik ini juga mempengaruhi biaya psikis seseorang yang telah lama jauh dari sanak saudara. Kelelahan akibat sering kali diartikan sebagai menurunnya efisiensi, performans kerja dan berkurangnya kekuatan / ketahanan fisik tubuh untuk terus melanjutkan yang harus dilakukan. Faktor yang paling banyak menyebabkan kelelahan adalah kurang tidur, kualitas tidur yang buruk termasuk jam internal tubuh. Disamping faktor-faktor umum ini, perpanjangan waktu mengemudi (time-on-task), terutama jika pengemudi tidak mengambil waktu istirahat yang cukup. Tujuan penelitian, secara umum adalah untuk hubungan antara umur, jenis kendaraan, durasi mengemudi, kondisi fisik, waktu istirahat, status gizi / IMT dengan terjadinya kelelahan pada pengemudi / pemudik. Jenis penelitian ini kuantitatif observasional untuk mengetahui kelelahan akibat mudik pada pengemudi pada rute jarak jauh dengan menggunakan metode cross sectional. Hasil penelitian pada variabel faktor didapatkan, faktor umur nilai (p = 0,320), jenis kendaraan (p = 0,248), durasi mengemudi (p= 0,016), kondisi fisik (p = 0,049), waktu istirahat (p= 0,021), status gisi / IMT (p= 0,010). Saran penelitian, keberadaan tol Jakarta – Cipali yang sangat panjang mencapai 364 KM, diharapkan perlu adanya  kerjasama lintas sector adanya klinik pratama setiap rest area sepanjang waktu, dan khususnya pada saat liburan panjang hari besar / hari raya terutama lebaran perlu adanya tim kesehatan mobile sepanjang jalur rawan (tidak hanya pos kesehatan) guna mengantisipasi kejadian musibah seperti halnya lebaran 2016 sebelumnya.
PISA Untuk Siswa Indonesia
Authors: Hawa Anni Malihatul , Putra Lisa Virdinarti
Published: October 2021

Penelitian ini bertujuan untuk mendeskripsikan hasil kemampuan siswa menyelesaikan soal matematika bertipe PISA yakni dari level 1 hingga level 6. Penelitian ini dilakukan dengan menggunakan metode kualitatif dengan teknik observasi, wawancara dan tes. Variabel dari penelitian ini yaitu kemampuan siswa menyelesaikan soal matematika bertipe PISA. Penelitian ini merupakan pengembangan penelitian sebelumnya. Penelitian ini dilaksanakan di SMP Negeri 1 Ungaran dalam waktu 9 bulan. Dengan sumber data adalah siswa-siswi kelas IXC dengan jumlah 35 siswa. Temuan dari penelitian ini yaitu menunjukkan bahwa kemampuan siswa dalam penguasaan konten, proses dan konteks hanya masih pada level 3 saja terlihat peningkatan yang siknifikan yakni dari pertemuan 1 level I 78%, level II 53%, level III 35%, hingga terlihat pada peningkatan  pertemuan ke 4 yakni level I 95%, level II 80%, level III 78%. Oleh karena itu dapat disimpulkan bahwa kemampuan siswa dalam menyelesaikan soal matematika bertipe PISA dapat meningkat jika dilakukan tes secara berkala dengan meminimalisir segala faktor-faktor penghambat siswa dalam menyelesaikan soal matematika bertipe PISA.
Pengaruh Model Pembelajaran Picture And Picture Berbantuan Media Permainan Roda Keberuntungan Terhadap Aktivitas Dan Hasil Belajar Pada Konsep Daur Hidup Hewan Siswa Kelas IV
Authors: Shafira Alda , Rosayanti Feny , Baedowi Sunan
Published: October 2021

ABSTRACTInfluence Of Learning Model Picture And Picture Assisted Media Respective Wheel Games To Activity And Learning Results On The Concept Of Animal Life Cycle Students Of  Class IV This research is motivated by low learning activities that affect student learning outcomes and ultimately student learning outcomes do not reach KKM. This study aims to determine how much influence the model of learning picture and picture assisted media game wheel of luck to the activity and student learning outcomes on science subjects class IV SDN Sendangmulyo 02 Semarang. The form of this research is quantitative research with Quasi Experimental Design design with Non-equivalent Control Group Design design. Sampling technique used is Nonprobability. The population of this study is all students of class IV SDN Sendangmulyo 02 Semarang. Data collection techniques in this study using documentation, observation, tests and interviews. Data analysis techniques consist of normality test, homogeneity test, completeness test and t test. Data analysis using t test obtained result 4,452 bigger than t table that is 1,990. The result of the research shows that the use of picture and picture learning model with the media of wheel of lucky game has an effect on the activity and the result of learning of fourth grade students of SDN Sendangmulyo 02 Semarang on the concept of animal life cycle. Keywords: Picture and Picture Model, Lucky Wheel, Activity and Learning Outcomes. ABSTRAKPenelitian ini dilatarbelakangi oleh rendahnya aktivitas belajar yang mempengaruhi hasil belajar siswa dan akhirnya hasil belajar siswa tidak mencapai KKM. Penelitian ini bertujuan untuk mengetahui seberapa besar pengaruh model pembelajaran picture and picture berbantuan media permainan roda keberuntungan terhadap aktivitas dan hasil belajar siswa pada mata pelajaran IPA kelas IV SDN Sendangmulyo 02 Semarang. Bentuk penelitian ini adalah penelitian kuantitatif dengan desain Quasi Experimental Design dengan bentuk desain Non-equivalent Control Group Design. Teknik sampling yang digunakan yaitu Nonprobability. Populasi penelitian ini adalah seluruh siswa kelas IV SDN Sendangmulyo 02 Semarang. Teknik pengumpulan data dalam  penelitian ini menggunakan dokumentasi, observasi, tes dan wawancara. Teknik analisis data terdiri dari uji normalitas, uji homogenitas, uji ketuntasan belajar dan uji t. Analisis data menggunakan uji t diperoleh hasil 4,452 lebih besar dari t tabel yaitu 1,990. Hasil penelitian menunjukkan bahwa penggunaan model pembelajaran picture and picture berbantuan media permainan roda keberuntungan berpengaruh terhadap aktivitas dan hasil belajar siswa kelas IV SDN Sendangmulyo 02 Semarang pada konsep daur hidup hewan.Kata kunci: Model Picture and Picture, Roda keberuntungan, Aktivitas dan Hasil Belajar.
Peran Media Utama Citaku Terhadap Kertampilan Berfikir Peserta Didik Kelas IV SD
Authors: Fahrozi Irgi Ahmad , Khoiri Nur , Purnamasari Iin
Published: October 2021

Education using the 2013 curriculum must be able to improve students' skills and values that apply in society. Critical thinking skills, among others, that must be possessed by students to support students' thinking and self-development. For this reason the need for innovation and good creativity from the teacher so that students get the goals that have been designed in learning. In learning, teachers usually still use conventional learning systems and are not added to the media. These impacts cause students to be unenthusiastic, enthusiastic about learning and even result in actual skills emerge and will increase students' potential to sink. Therefore teachers must design and create media to improve students' critical thinking skills. These media UTAMA CITAKU media which have a role in improving students' critical thinking skills.
Estudio cinético de la hidrogenólisis de tiofeno sobre un catalizador comercial de cobalto-molibdeno-alúmina
Authors:   , Aulmann Miguel Ángel
Published: October 2021

En este trabajo se ha realizado el estudio cinético, a escala de laboratorio, de la hidrogenólisis de tiofeno sobre un catalizador comercial de cobalto-molibdeno-alúmina. Las determinaciones experimentales se llevaron a cabo en condiciones de presión atmosférica y a temperaturas comprendidas entre 323 y 425°C.
Inseguridad Alimentaria y el uso de las Despensas en el Periurbano de Nuevo México. Caso de Estudio Silver City
Authors: Schramski Sam
Published: October 2021

Se trata de un estudio sobre la inseguridad alimentaria en un área periurbana del suroeste de Nuevo México (EE. UU.), en la ciudad de Silver City. A través de una metodología mixta, cuantitativa y cualitativa con el uso de cuestionarios se encontró que la región muestra inseguridad alimentaria y pobreza, esto es confirmado por los altos índices del uso de cupones de alimentos y el uso de la despensa de alimentos. Se concluye que las organizaciones que operan estas despensas a menudo son organizaciones sin fines de lucro mismas que llenan un vacío en los servicios ausentes provistos por el gobierno de los Estados Unidos. Particularmente estos entornos son importantes ya que se pueden observar y analizar patrones y cambios en el bienestar social estadounidense, en especial en la relación con la mitigación de la inseguridad alimentaria.
REFLEKSI TERHADAP META-ISU DALAM PEMBELAJARAN SEJARAH MATEMATIKA DENGAN TUGAS PROYEK
Authors: Umah Ulumul
Published: October 2021

Penelitian ini bertujuan untuk mendeskripsikan aktivitas pembelajaran dan refleksi mahasiswa terhadap meta-isu dalam matakuliah Sejarah Matematika dengan tugas proyek di Program Studi Matematika Unipdu Jombang. Pendekatan kualitatif digunakan dalam penelitian ini. Subjek penelitian ini adalah mahasiswa semester  ke-3 Tahun Akademik 2014/2015 yang sedang mengikuti matakuliah sejarah matematika di Program Studi Matematika Unipdu Jombang. Pengambilan data dilakukan melalui observasi, dokumentasi, dan wawancara. Aktivitas dalam pembelajaran Sejarah Matematika dengan tugas proyek pada mahasiswa Program Studi S1 Matematika Unipdu Jombang yaitu meliputi mengkaji literatur, menulis hasil kajian literatur dan mempresentasikannya, memilih topik proyek, menghasilkan produk, dan mempresentasikan produk. Hambatan pada pembelajaran yaitu kurang optimalnya aktivitas mengkaji literatur. Hasil penelitian menunjukkan bahwa berdasarkan refleksi terhadap meta-isu, tingkat interdisipliner mahasiswa yaitu pada crossdisciplinarity merujuk pada taksonomi Jantsch.
Predicting Growth Rate of Students’ Achievement in Mathematics Using Mathematical Growth Model
Authors: Obasi Chinedu , Ugo Chima
Published: October 2021

Students’ mathematics achievements in secondary school have an influential effect on their performance in university and their future careers. There are numerous innovative teaching strategies which are promising and have shown to improve students’ achievement in mathematics; one will wonder if there will be corresponding achievement growth in mathematics. Therefore, this paper predicts growth rate of students’ achievement in mathematics using mathematical growth model. A developmental survey design was employed where students’ WAEC mathematics achievement results from 1991-2016 were collected from the Development Division, West African Examination Council (WAEC) Lagos, Nigeria. The Logistic growth mathematical model was used to compute predicted achievement growth rate. The Statistical Package for Social Sciences (SPSS) was also used to plot the graph of the achievement data from 1991 to 2016. The result indicates that the predicted growth rate of students’ achievement in mathematics is approximately increased by 25.3% per year. This shows a weak upward trend in predicted rate of achievement at credit level and consequently indicates unsteady sustainability in mathematics achievement as well as economic growth. It is recommended among others that there should be investigation into factors responsible for the weak and unsteady achievement growth in WAEC general mathematics in Nigeria. Also, effective teaching and learning of mathematics at all levels of schooling should be ensured by all concerned in other to sustain the achievement growth in the subject.
Peningkatan Kemampuan Penalaran Matematis Siswa Melalui Problem Posing Ditinjau Dari Tahap Perkembangan Kognitif Siswa
Authors: Romsih Oom , Yuhana Yuyu , Nindiasari Hepsi
Published: October 2021

Penelitian ini bertujuan untuk melihat pengaruh penggunaan pendekatan pembelajaran problem posing dalam meningkatkan kemampuan penalaran matematis siswa ditinjau dari tahap perkembangan kognitif siswa. Penelitian ini menggunakan metode quasi eksperimen dengan dua kelas yang dijadikan sampel penelitian. Data kemampuan penalaran matematis dan tahap perkembangan kognitif siswa diperoleh melalui tes kemampuan penalaran matematis dan Tes Of Logical Thinking (TOLT). Data yang dihasilkan dianalisis untuk dilihat perbedaan rerata dari ketiga tahap kognitif pada kelas yang dijadikan sampel penelitian.Hasil penelitian menunjukan bahwa pada tahap perkembangan kognitif formal tidak terdapat perbedaan rerata kemampuan penalaran matematis, sedangkan pada tahap perkembangan kognitif transisi dan konkret menunjukkan terdapat perbedaan rerata penalaran matematis antara siswa yang menggunakan pendekatan problem posing dengan siswa yang menggunakan pendekatan saintifik. DOI: https://doi.org/10.31235/osf.io/gu387
Identifikasi Standarisasi Laboratorium IPA di Salah Satu MTs Jember
Authors: Ismiyanti Neny , Windasari Riva , M. S Andika , H.M Vivin , Aziz Abdul
Published: October 2021

Laboratorium sekolah yang baik harus memenuhi kelengkapan peralatan dan memperhatikan fasilitas penunjang sebagaimana yang ditetapkan oleh Permendiknas No. 24 Tahun 2007 tentang standarisasi laboratorium. Tujuan penelitian ini adalah untuk mengidentifikasi kelayakan dan optimalisasi laboratorium IPA yang terdapat di salah satu MTs yang ada di Kabupaten Jember. Penelitiaan ini berjenis  peneltian deskriptif kualitatif. Sumber data yang digunakan berasal dari hasil wawancara. Sumber data primer adalah salah satu guru yang ada di MTs X dan sumber data sekunder berasal dari berbagai artikel jurnal nasional. Teknik pengumpulan data menggunakan teknik wawancara bebas terpimpin. Hasil wawancara menginformasikan bahwa kegiatan praktikum yang dilaksanakan di salah satu sekolah MTs Jember masih belum terlaksana dengan baik. Peralatan yang terdapat di laboratorium MTs X bisa dikatakan lengkap, termasuk ketersediaan KIT fisika. Dari hasil data yang diperolah dapat disimpulkan bahwa laboratorium yang terdapat disekolah tersebut kurang dioptimalkan dengan baik karena beberapa hal seperti guru yang mengajar di salah satu MTs X bukan berasal dari background bidang studi IPA, kemudian sulitnya mendapatkan perizinan dari pihak yayasan untuk menggunakan laboratorium karena takut alat-alat laboratorium menjadi rusak.
Kata Kunci : laboratorium, pembelajaran IPA, praktikum
A good school laboratory must meet the completeness of equipment and pay attention to supporting facilities as stipulated by Permendiknas No. 24 of 2007 concerning laboratory standardization. The purpose of this study was to identify the feasibility and optimization of the science laboratory in one of the MTs in Jember Regency. This research is a qualitative descriptive research. The source of the data used comes from the results of interviews. The primary data source is one of the teachers in MTs X and the secondary data sources are from various national journal articles. Data collection techniques using guided free interview techniques. The results of the interview informed that the practicum activities carried out in one of the MTs Jember schools were still not carried out properly. The equipment in the MTs X laboratory can be said to be complete, including the availability of a physics KIT. From the results of the data obtained, it can be concluded that the laboratory in the school is not optimized properly because several things, such as the teacher who teaches at one MTs X is not from a science background, then it is difficult to get permission from the foundation to use the laboratory for fear of tools. -Laboratory equipment is damaged.
Keywords: science learning, laboratory, practicum.
CELLULOSE NANOMATERIALS IN TEXTILE APPLICATIONS
Authors: KRAUSE BIERHALZ ANDREA CRISTIANE
Published: October 2021

Nanocellulose (NCC) has attracted increasing attention for use in several applications owing to its impressive strength-to-weight ratio, ease of functionalization, and apparent biocompatibility. In the nanocomposite textile field, NCC has exhibited outstanding potential for reinforced fibers, especially fibers processed by solution spinning. Continuous NCC fibers with high modulus and strength can be obtained, while preserving the cellulose I crystal structure. Owing to the various possibilities of surface modification, NCC is an efficient adsorbent of cationic and anionic textile dyes, as it reaches maximum removal capacities comparable to those of commercial adsorbents. In dyeing, NCC contributes in improving dye fixation and reducing the consumption of chemicals and water. In this review, recent studies on the applications of NCC in the textile field are discussed. The main methods, advances and limitations, regarding the NCC applications for fiber reinforcement of water-soluble and insoluble materials, dye removal and textile finishing, are presented.
COMPARISON OF PROPERTIES OF CELLULOSE NANOMATERIALS OBTAINED FROM SUNFLOWER STALKS
Authors: DURMAZ EKREM , ATES SAIM
Published: October 2021

This study aimed to investigate the usability of sunflower stalks, which is one of the most significant agricultural residues in Turkey, in the production of cellulose nanomaterials (CNMs). Cellulose nanofibrils (CNFs) and cellulose nanocrystals (CNCs) were produced by using a grinding method and acid hydrolysis, respectively. The average width and length of CNCs were found as 13.91 ± 3.09 nm and 60.44 ± 21.06 nm, respectively. Besides, the average width of CNFs was determined as 15.03 ± 3.68 nm. The crystallinity index of CNFs and CNCs was determined as 82.64% and 83.09%, respectively. Although the main thermal degradation stage of CNCs started at higher temperature than that of CNFs, the latter were more stable than CNCs at high temperatures. Furthermore, the chemical bonds in the raw material, bleached fiber, CNCs and CNFs were investigated with FTIR analysis. Consequently, it was seen that sunflower stalks can be a suitable raw material for the production of CNMs.
Thermoluminescence properties of Ca2B2O5:Dy ceramics for neutron measurement
Authors: Komiya Hajime , Kawamura Ichiro , Kawamoto Hiroki , Fujimoto Yutaka , Koshimizu Masanori , Okada Go , Koba Yusuke , Wakabayashi Genichiro , Asai Keisuke
Published: October 2021

To develop thermoluminescent materials for neutron detection, 10B-enriched and 11B-enriched Ca2B2O5:Dy were prepared and their thermoluminescence (TL) properties were investigated after irradiation with X-rays, He ions and thermal neutrons. The TL of these materials was induced by X-rays and He ions and sensitivities to radiation are independent of the boron isotopes in the host materials. On the contrary, the TL intensity of the 10B-enriched sample was significantly higher than that of the 11B-enriched sample after irradiation with thermal neutrons. The high sensitivity to neutrons in the TL of the 10B-enriched sample is attributed to γ-rays and charged particles generated from 10B(n, α)7Li and 10B(n, α)7Li* reactions. In the neutron fluence range of the measurements (3.0 × 105 to 108 neutrons cm−2), the TL intensities attributed to 10B(n, α)7Li and 10B(n, α)7Li* reactions against thermal neutron fluence showed good linearity. In terms of detectable fluence, the new TL materials are more sensitive to neutrons than some existing Dy-containing TL materials.
Advancements in MEMS technology for medical applications: microneedles and miniaturized sensors
Authors: Shikida Mitsuhiro , Hasegawa Yoshihiro , Farisi Muhammad Salman Al , Matsushima Miyoko , Kawabe Tsutomu
Published: October 2021

Since their early stages of development, micro-electro-mechanical systems (MEMS) have shown potential for breakthroughs in the fabrication of medical tools. The miniaturization of various devices using MEMS technology has enabled minimally invasive treatments and in situ measurements. In this paper, we introduce two advancements in MEMS applications in the medical field: (1) microneedle devices for brain activity evaluation, a transdermal drug delivery system, and biological fluid sampling; and (2) miniaturized MEMS sensors for monitoring the conditions inside blood vessels and respiratory organs. In addition, we provide a summary of MEMS sensors used in developing new drugs, detecting vital signs, and other applications.
Pretesa a o pretesa di? Nulla a (che) pretendere o nulla da pretendere?
Authors: De Roberto Elisa
Published: October 2021

Alcuni lettori ci chiedono se sia corretto l’uso della preposizione a in dipendenza del sostantivo pretesa (“pretesa alla correttezza”, “pretesa all’esame della domanda”); altri ci sottopongono la locuzione “nulla a pretendere” o “nulla a che pretendere”, propria del linguaggio giuridico: non si dovrebbe dire o scrive “nulla da pretendere”? Infine un lettore esprime dubbi sulla correttezza di espressioni come “gli pretendi (qualcosa)” .
Роль репозитариев данных и проблемы этики их использования
Authors: Тихонова Елена Викторовна , Шленская Наталия Марковна
Published: October 2021

Репозитарии становятся обязательным элементом для научных школ и институтов, потому что они выполняют и  расширяют функции институтских библиотек, а также потому, что институты видят преимущества формирования электронных архивов. Репозитарии дают возможности для совместного и повторного анализа данных исследований, объединение данных для метаанализа. Анализируются аспекты, которые способствуют и препятствуют распространению данных, среди них недоверие к данным, неправомерное использование данных другими исследователями.
Physical Layer Security in Multi-hop Cooperative Wireless Relaying
Authors: Hatamnia Sajad , Morafah Mahdi , Lin Bill
Published: October 2021

In the last decade, multi-hop cooperation has evolved bringing several advantages including coverage
improvement, more reliability of wireless links, and power consumption reduction. Still, its application
has raised several challenges, such as the need for secure transmission at each hop, algorithms to
perform relay selection and the accurate models to facilitate performance analysis. This paper addresses
the problem of physical layer (PHY) security in a multi-hop wireless cooperative network, where
communication at each hop is assisted by multiple relays forming a cluster, each cluster being surrounded
by multiple eavesdroppers which together may tap transmissions from both the source and the relays. The
main focus of the study is on analyzing the benefits of various relay selection schemes for protecting the
source-destination transmission against the eavesdroppers, which can collude and combine information
via diversity combining techniques. To be specific, four relay selection schemes, which differ in the
way they employ available measures link quality, are considered to deliver the source information to
the destination via a decode-and-forward (DF) strategy. To evaluate the security performance of the
multi-hop cooperative link in the presence of colluding eavesdroppers, we derive novel closed-form
analytical expressions for the secrecy outage probability (SOP) with consideration of special cases of
practical interest.
Using the Implicit Association Test to address Healthcare Disparities in Minority Patients: Initiating the Discussion in Orthopedic Surgery
Authors: Molly Hulbert  , Brittany DeClouette  , Dikran Nalbandian  , Charla Fischer
Published: October 2021

Healthcare disparities have become a notable topic of research in the last decade. Within Orthopedic Surgery, and more specifically, spine surgery, minority patients experience these disparities via increased lengths of stay, higher 30-day hospital readmission rates, and poor patient reported outcomes. One possible cause for these disparities is the implicit biases held by these patients’ physicians. The aim of this study is to assess the current state of implicit racial biases amongst orthopedic surgeons at various stages of training. To do this, 4th year medical students, majority applying into orthopedic surgery, as well as Orthopedic Surgery residents and attendings at an urban academic medical center were provided an anonymous, voluntary survey to document the results of an online Implicit Association Test specifically focusing on race. Our results demonstrated that medical students and residents mirror the general population with an inherent preference for white over black people. Attendings differed significantly from the general population with little to no preference for either race. While there are various hypotheses for these findings, the results suggest that there is a strong need for further research surrounding implicit bias and healthcare disparities in orthopedic surgery among both future and current physicians. With a better understanding of how to shift these biases, achieving equity in patient care can become a more attainable goal.
E-Commerce accompanied by Errand Mechanism for User Convenience
Authors:   Department of Information Technology, Laxmi Institute of Technology, Sarigam, Valsad, Gujarat, India, Maheshbhai Patel Venci , Shaileshbhai Patel Nehal ,   Department of Information Technology, Laxmi Institute of Technology, Sarigam, Valsad, Gujarat, India, Mohanlal Prajapati Viral ,   Department of Information Technology, Laxmi Institute of Technology, Sarigam, Valsad, Gujarat, India
Published: October 2021

Nowadays many families are dealing with the problem of fast and energy-saving delivery of groceries. Also, they can't purchase products from different sellers of their choice in a single buy. Thus, to overcome these problems, we are going to make an application called "SAHAYAK-Simplicity of life". It is providing solutions based on vocal for local and errand methods. SAHAYAK is trying to connect local vendors & buyers on a single platform and to implement an errand method for any normal person who wants to deliver their nearest ones' ordered products can deliver. They earn credit points for such delivery which can be helpful for them in their future shopping. In SAHAYAK, the customer has a choice to select various products from their selected vendors and pay for them all together, the system will request those items to the respective sellers and collect & deliver them all together. Easy process to buy the groceries which customers want, don’t have to pay extra or pay differently at all places.
Improved mechanical and electrochemical properties of PVDF/PEO/LiClO4 based solid polymer electrolyte by using TiO2 and MgO nanoparticles
Authors:   Department of Physics, Bhagwant University AjmerSikar road, Ajmer, Rajasthan, India., Ponam Ponam , Singh Parshuram ,   Department of Physics, Bhagwant University AjmerSikar road, Ajmer, Rajasthan, India.
Published: October 2021

The poly (vinylidene fluoride) PVDF and poly (ethylene oxide) PEO-based solid polymer electrolytes are gaining popularity due to their good electrochemical and mechanical characteristics. In the present work the polymer electrolyte is prepared by taking 80% PVDF, 20% PEO, and 20% LiClO4 through rigorous mixing. Further, the properties of PVDF/PEO/LiClO4 based electrolyte are improved by adding TiO2 and MgO nanoparticles in different proportions. The results show that the addition of TiO2 and MgO nanoparticles has a significant effect on the electrochemical characteristics and mechanical properties of the electrolyte. The maximum current onset potential of 4.97 V is observed with a 4% concentration of TiO2 nanoparticles. Also, the mechanical properties such as ultimate stress and failure stress are increased with the addition of nanoparticles. The ionic conductivity of the electrolyte first increases with an increase in the concentration of nanoparticles but it starts decreasing after 2% concentration.
Environment sustainability practices in bangladeshi cement industries
Authors:   Department of Civil Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 UPM, Serdang, Malaysia, Sabuz Md Zahid Hasan , Faizal Muhammad ,   Department of Civil Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 UPM, Serdang, Malaysia, Khairuzzaman Md ,   Department of Civil Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 UPM, Serdang, Malaysia, Hasin Tanjim ,   Department of Landscape Architect, Faculty of Design & Architecture, Universiti Putra Malaysia, 43400 UPM, Serdang, Malaysia, Raju Matiur Rahman ,   Department of Civil Engineering, Faculty of Science & Engineering, City University Bangladesh, Dhaka-1215
Published: October 2021

Cement industries are responsible for huge amount of air pollution, which is harmful for the relevant workers health. According to a new questionnaire-based study, Bangladesh's cement industry has limited opportunities to follow green manufacturing practices. The aim of this paper is to investigate the situation of group wise environmental sustainability practices in Bangladesh, with the goal of assisting cement manufacturers in Bangladesh to improve their environmental sustainability practices in their manufacturing processes. In this paper, a comparison of cement manufacturers across Bangladesh's three major divisions was presented. It has been discovered that a large number of employees from these three departments are unaware of environmental concerns and sustainable industrial activities. Just 53% of the respondents are aware of the environmental concerns surrounding cement production and their customers are the primary sources of such knowledge. Furthermore, only 42% of respondents used the ISO 14000 environmental quality control scheme, despite the fact that 53% of respondents used some kind of green manufacturing. Moreover, the causes for non-adoption as well as environmental factors affecting sustainable industrial practices have been identified and established. The lack of financial resources, lack of understanding and information about environmental issues, lack of demand from customers and stakeholders are the reasons why such practices have not been adopted. In order to follow green production methods, it is essential to use environmentally friendly cement materials, recycled-fiber packaging, biodegradable packaging and environmentally friendly waste management systems and technologies.
Aluminum Composite Materials Providing Extended Service Life
Authors: Kurganova Yulia A. , Kolmakov Alexey G. , Kurganov Sergey V.
Published: October 2021

Hardness and tribotechnical characteristics were investigated under conditions of dry sliding friction on steel obtained by liquid-phase mixing of Aluminum-Matrix Composite (AMC) materials based on aluminum alloys AK12, D16, V124, AL9, AL25, reinforced with silicon carbide SiC particles with a size of 28 μm with a content of 5, 10 or 15% by volume. AMC performed better than matrix alloys and the commonly used antifriction aluminum alloy AOM 2-1. The dry friction coefficient was 1.5-3 times lower on average, and the volumetric wear rate was 5-9 times lower. An increase in the content of SiC particles in the composite from 5 to 20 vol.%. As a rule, leads to an improvement in the tribotechnical characteristics. The composites obtained have shown a sufficiently high operational suitability for work in friction units with steels both in dry friction and in friction with lubrication.
Muerte Súbita Cardíaca en Atletas. Conocimiento e importancia del tamizaje
Authors: Meza Musa Arianne , Tercero Muxi Estuardo
Published: October 2021

Introducción: La muerte súbita de atletas jóvenes competitivos continúa causando impacto no solamente entre el público y la comunidad atleta, sino también entre la médica. Estas muertes han sido reportadas con un aumento en su frecuencia tanto en los Estados Unidos, como en los países latinos y Europeos. Estos eventos han causado gran impacto, han dado lugar a una mayor discusión e investigación entre las asociaciones médicas para su prevención. En Guatemala aun no existe un tamizaje a seguir. Objetivos. El objetivo del estudio fue determinar que tanto existe conocimiento del tema entre los deportistas de alto nivel, y que tanto conocen sobre su propio riesgo de padecer del evento. Métodos: Estudio de tipo descriptivo, con técnicas cualitativas y cuantitativas de tipo transversal de 217 atletas de la CDAG. Resultados: Existe evidencia estadísticamente significativa que más del 50% de los atletas no conocen sobre su riesgo personal (con intervalo de 95% de confianza), y que más del 50% tiene un nivel de conocimiento adecuado respecto al tema. Conclusiones: Entre los atletas estudiados hay individuos con factores de riesgo importantes de evento súbito cardiovascular y sin embargo realizan ejercicio extenuante sin tener una evaluación de rutina. Es necesario fortalecer la evaluación médica en los atletas competitivos guatemaltecos y crear más conciencia del tema.
Albian-Turonian stage boundaries and subdivisions in the western Portuguese Basin, with special emphasis on the Cenomanian-Turonian boundary in the ammonite facies and rudist facies
Authors: Berthou Pierre-Yves
Published: October 2021

The precise chronostratigraphy from the Aptian-Albian boundary to the upper Cenomanian has been established mainly on the distribution of large benthic Foraminifera and dinocysts. Ammonites are rare, and nannofossils and planktonic Foraminifera are absent. In this study species with well-known stratigrap- hic ranges were used and, where possible, reference is made to sequences dated with ammonites. The upper Cenomanian, the Cenomanian-Turonian boundary and the lower Turonian were studied first in the ammonite facies, where Choffat at the turn of the century described different species of Vascoceras. The type sections contain Cenomanian ammonites (Euomphaloceras, Calycoceras and Pseudocalycoceras. Vascoceras ex gr. gamai appears in the Cenomanian Metoicoceras geslinianum Zone. Above this zone, Spathites (Jeanrogericeras) subconciliatus marks the Neocardioceras juddii Zone, here placed in the uppermost Cenomanian. Thus, the lower Turonian is marked by the appearance of Fagesia superstes and F. thevestensis. The different sections in the rudist facies and ammonite facies are correlated. Only Radiolites peroni seems to appear in the lower Turonian. The presence of Durania arnaudi in the Turonian depends on the assignment of the Neocardioceras juddii Zone to the uppermost Cenomanian. Only the lower part of the Turonian has been identified in Portugal. The stratigraphy of the coarse sandstones which separate the lower Turonian from the Coniacian horizon with Hemitissotia ceadourensis, is poorly known.
Some possible boundary-stratotypes for the base of the Cenomanian and Turonian Stages
Authors: Hancock J. M.
Published: October 2021

Historical definitions of stages are inadequate for the standards of precision in stratigraphy now required. The base of the Cenomanian is best defined by the base of the Zone of Hypoturri/ites schneegansi with a boundary-stratotype north of Djebel Hameima in Tunisia. The Lower Cenomanian Graysonites fauna is Tethyan and probably failed to migrate to boreal regions. The base of the Turonian is best defined by the appearance of the main development of the inoceramid Mytiloides as represented by M. opa/ensis Kauffman non Bose. This coincides with the base of the ammonite Zone of Pseudaspidoceras flexuosum. Possible localities for the boundary-stratotype are in south-west Texas; the most suitable is probably in Calvert Canyon.
Ammonite faunas and the 'standard zones' of the Cenomanian to Maastrichtian Stages in their type areas, with some proposals for the definition of the stage boundaries by ammonites.
Authors: Kennedy W. J.
Published: October 2021

The 'standard zones' of the Cenomanian to Maastrichtian Stages as applied to the western European region are critically evaluated, and their development within the type areas of these stages is reviewed. Proposals for defining the bases of the Upper Cretaceous stages worldwide using ammonites are: Cenomanian: appearance of Hypoturrilites Dubourdieu, 1953 or Neostlingoceras Klinger & Kennedy, 1978; Turonian: appearance of Pseudaspidoceras flexuosum Powell, 1963; Coniacian: appearance of Forresteria (Harleites) petrocoriensis (Coquand, 1859); Santonian: appearance of Texanites species; Cam­panian: appearance of either Placenticeras bidorsatum (Roemer, 1841), Submortoniceras Spath, 1921, or on the basis of evolutionary changes within the Scaphites hippocrepis (De Kay, 1827) lineage; Maastrich­tian: appearance of Pachydiscus neubergicus (Von Hauer, 1858).
Albian Stage and Substage boundaries
Authors: Owen H. G.
Published: October 2021

The base of the Albian Stage has been defined in the European province at the earliest appearance of the ammonite Leymeriella ('Proleymeriella') schrammeni anterior Brinkmann, the earliest member of the important 'mid-Cretaceous' ammonite superfamily Acanthocerataceae. A type section in the Harz fore­deep region of northern Germany has been proposed. A certain amount of intra-provincial variation in the ammonite fauna around this boundary is known in the European province. This does not provide insuperable difficulties, however, in the recognition of late Aptian and early Albian ages in the various lithological sequence􀀧 within this province. Leymeriella is generally unknown in the Canadian-Russian Arctic province, but the association of a Leymeriella of schrammeni Subzone age with a Freboldiceras in north Greenland, provides a useful correlation of these largely disparate provincial ammonite faunas. Correlation with the Gondwanan province is less certain at present. The length of Albian time (14-15.5 Ma) has led to the recommendation that Substage boundaries should be defined for the Middle and Upper Albian. The Subzone of Lyelliceras lyelli provides a good base for the Middle Albian, one that can be recognized in both the European and Gondwanan provinces. The base of the Upper Albian is marked by Dipoloceras cristatum an ammonite which is also of widespread occurrence in both of these provinces. The occurrence of the Arctic province ammonite Pseudogastroplites in the cristatum Subzone provides a good marker for correlation of this province with the European and Gondwanan provinces.
Assessing the inhibitory properties of a latent inhibitor in flavor-aversion learning
Authors: Liberal Unai , Rodríguez Gabriel , Hall Geoffrey
Published: October 2021

In Experiment 1, rats received 16 nonreinforced trials of exposure to a flavor (A) that was subsequently used as the conditioned stimulus in flavor-aversion conditioning. In the critical condition, Flavor A was presented in compound with a different novel flavor on each of the eight daily trials. This treatment produced latent inhibition, in that this preexposure retarded conditioning just as did 16 trials with A alone. Rats in the control conditions, given no preexposure or exposure just to the sequence of novel flavors, learned readily. Experiment 2 examined the effects of these forms of preexposure on performance on a summation test, in which Flavor A was presented in compound with a separately conditioned flavor (X). The preexposure procedure in which A was presented along with novel flavors rendered A effective in inhibiting the response conditioned to X on that test. The conclusion, that this form of training can establish the target stimulus as a conditioned inhibitor, is predicted by the account of latent inhibition put forward by Hall and Rodríguez (2010) which proposes that the latent inhibition effect is a consequence both of a reduction in the associability of the stimulus and of a process of inhibitory associative learning that opposes the initial expectation that a novel event will be followed by some consequence.
La visualización y percepción geométrica del Principio de Cavalieri con el apoyo de GeoGebra 3D
Authors: Sousa Renata Teófilo de , Ferreira de Azevedo Italândia , Vieira Alves Francisco Régis
Published: October 2021

Este trabajo presenta los resultados de la aplicación de una secuencia didáctica orientada a construir conocimiento sobre el Principio de Cavalieri, con el aporte de la aplicación GeoGebra en su versión de aplicación para smartphones - Calculadora 3D. Para este estudio, se utilizaron como base conceptual la Teoría de las situaciones didácticas (TSD) de Guy Brousseau y la Teoría de las categorías del razonamiento intuitivo de Efraim Fischbein. El objetivo de este trabajo fue presentar una secuencia didáctica que pueda sustentar un aprendizaje efectivo del Principio de Cavalieri de GeoGebra, como una forma de asistir al estudiante en la construcción del razonamiento geométrico, a través de la visualización, percepción e intuición. Las reuniones se realizaron de forma remota, debido al escenario pandémico COVID-19. La solicitud se llevó a cabo con estudiantes de segundo año de secundaria de una escuela pública de educación vocacional ubicada en Fortaleza - CE. En resumen, se señala que el TSD y las categorías intuitivas asociadas a GeoGebra tienen un gran potencial para estimular la evolución del pensamiento geométrico del alumno, a través del desarrollo de la percepción, la intuición y la visualización geométrica.
An umbrella review of systematic reviews of β-hydroxy-β-methyl butyrate (HMB) supplementation in promoting skeletal muscle mass and function in aging and clinical practice
Authors:   McMaster University, Phillips Stuart , Lau Kyle , D'Souza Alysha , Nunes Everson
Published: October 2021

Review question / Objective: An umbrella review of systematic reviews of the use of β-hydroxy-β-methyl butyrate (HMB) supplementation in promoting skeletal muscle mass and function in aging and clinical practice. Condition being studied: Muscle mass (and various proxies thereof), strength, and physical function. Information sources: Pubmed, Web of Science, Embase.
Erstnachweis von Anisodactylus signatus
(Panzer, 1797 (Coleoptera: Carabidae) in Schleswig-Holstein
Authors: Hoffmann Hannes
Published: October 2021

Anisodactylus signatus (Panzer, 1797) konnte erstmals für Schleswig-Holstein
nachgewiesen werden. Das Weibchen wurde auf einer Blühfläche nördlich von
Neumünster mit Bodenfallen gefangen. Es werden Angaben zum Fundort, Ver-
breitung und Habitatansprüchen geliefert.