bluuebunny/crossref_metadata_2025 huggingface dataset:
Flow-Capture Location Model with Link Capacity Constraint Over a Mixed Traffic Network
Authors: Liu Ping , Cao Jinde , Luo Yiping , Guo Jianhua , Huang Wei
Published: July 2022

This paper constructs and settles a charging facility location problem with the link capacity constraint over a mixed traffic network. The reason for studying this problem is that link capacity constraint is mostly insufficient or missing in the studies of traditional user equilibrium models, thereby resulting in the ambiguous of the definition of road traffic network status. Adding capacity constraints to the road network is a compromise to enhance the reality of the traditional equilibrium model. In this paper, we provide a two-layer model for evaluating the efficiency of the charging facilities under the condition of considering the link capacity constraint. The upper level model in the proposed bi-level model is a nonlinear integer programming formulation, which aims to maximize the captured link flows of the battery electric vehicles. Moreover, the lower level model is a typical traffic equilibrium assignment model except that it contains the link capacity constraint and driving distance constraint of the electric vehicles over the mixed road network. Based on the Frank-Wolfe algorithm, a modified algorithm framework is adopted for solving the constructed problem, and finally, a numerical example is presented to verify the proposed model and solution algorithm.
Political and Legal Conditions of Marketing Activity of Businesses in the European Market
Authors: Komor Marcin
Published: July 2022

The article tackles the political and legal environment within the borders of the European Union (EU) member states. Determinants of the political and legal environment of the European market were identified on two levels: (1) the framework, i.e. supranational European political and legal conditions; (2) the classical political and legal environment of the EU member states. Afterwards, an analysis of individual factors of the political and legal environment in the aforementioned levels was performed. Four legal areas in the EU states were demonstrated: Roman, Anglo-Saxon, Germanic and mixed; three jurisdictional systems were identified: case law, continental and Scandinavian law; and the legal framework of the Union was found to consist of primary legislation, secondary legislation and adjudications of the Court of Justice of the EU. The problem of excessive duration of the administrative procedures, untimeliness and incomplete transposition of directives into the national law of the member states was discussed. It was also brought to attention that the diversity of laws and taxes is still a significant barrier to foreign operations of businesses in the EU internal market. It was also indicated that the integration of European law enables economic entities to perform marketing activities in the European market in the form of a representative office or a foreign branch without legal entity. Finally, it was stated that the factors of the political and legal environment are significantly unified in the supranational environment, while in the classical environment, there are some differences among the EU countries, but they allow for the use of unified marketing concepts, e.g. the concept of euromarketing.
Young Consumers Towards Smart Homes
Authors: Kolny Beata
Published: July 2022

Year after year, smart home systems continue to increase in popularity among consumer households. Consumption of smart home systems is also predicted to increase steeply in the coming years. Therefore, the article aims at assessing the attitude of young consumers towards a smart home and its devices. The article is based on primary and secondary sources of information. While primary information indicated the attitude of young consumers towards smart homes in their capacity as potential buyers, secondary information allowed for the definition of the issues discussed pertaining to smart homes and their devices. Using direct research, the online survey technique was employed on a sample of 588 consumers aged 18-34 years living in Poland in 2021. The respondents’ declarations showed that they intend using smart home services in the future, and that they thought using smart home devices would be enjoyable. In addition, respondents agreed with the statements that smart home devices are easy to use and valuable in everyday life, and that using smart home devices helps complete household chores faster. In their opinion, using a smart device at home can increase security and safety by detecting gas and smoke emissions and by creating an alert in the event of unauthorised home intrusion.
Causes of Suboptimal Preoxygenation Before Tracheal Intubation in Elective and Emergency Abdominal Surgery
Authors: Kauzonas Evaldas , Kalinauskaitė Miglė , Miškinytė Sigutė , Bubulytė Silvija , Kontrimavičiūtė Eglė
Published: July 2022

Optimal preoxygenation (PO) prior to tracheal intubation reduces the risk of arterial desaturation and prolongs the period of safe apnoea. The common methods of PO are mask ventilation with 100% O2 for 3–5 minutes or, alternatively, asking the patient to take eight deep breaths in a minute. Our study group conducted a prospective study to assess the impact of the most common risk factors on PO and to compare the efficiency of PO in patients undergoing elective and emergency abdominal surgery without premedication. PO was performed using mask ventilation with 6 l/min of 100% oxygen for 5 minutes. End-tidal oxygen (EtO2) was documented in 30-second increments. We found that optimal PO (EtO2 > 90%) was not achieved by almost half of the patients (46%) and that this was more common in the elective surgery group. Effective PO was not impacted by any of the evaluated risk factors for suboptimal oxygenation. Despite these findings, we believe that the identification of potential risk factors is crucial in the pre-anaesthesia stage, given the benefits of optimal PO.
Anaesthesia for Liver Transplantation
Authors: Zykute Dalia , Gelmanas Arūnas , Trepenaitis Darius , Macas Andrius
Published: July 2022

Since the first liver transplantation at the Kaunas Clinic of the Hospital of Lithuanian University of Health Sciences (LUHS), in 2000, many changes have been implemented and an increasing number of cases led to the development of expertise. The aim of this article was to summarise 12-years out of liver transplantation experience. Data was obtained retrospectively from inpatient medical records at the Hospital of LUHS, Kaunas Clinic. All cases of liver transplantations from November 2009 to September 2021 were included (n = 96). The median age of transplant recipients was 50 years (IQR 46–56). Two-thirds of recipients were male (n = 66, 69%). The mean Model for End-Stage Liver Disease (MELD) score was 23 (SD 6). The most common indication for liver transplantation was hepatitis C virus-related end-stage liver disease (n = 24, 25%). Immediate extubation was performed with a median of 63% of cases (IQR 14.3–75.7%). We further compared data between the early (November 2009 – December 2015) and late phases (January 2016 – September 2021) of experience: the number of liver transplantation cases increased by 66% from 36 to 60), MELD scores stayed similar (an average of 22 vs 24, p = 0.282), and mean intraoperative time did not change significantly (543 minutes vs 496 minutes, p = 0.078). Liver transplantation has been gaining momentum in Lithuania. Increasing experience enables our centre to meet an increasing demand for liver transplantations.
The Difference Between Traditional and Online Schooling on the Romanian Higher Education System During the COVID19 Pandemic. Case Study: Bucharest University of Economic Studies Students’ Perception Regarding the Effects of Online Education
Authors: Săseanu Andreea Simona , Boboc Cristina-Rodica , Toma Sorin George , Vasile Valentina
Published: July 2022

1) 2) Bucharest University of Economic Studies, Bucharest, Romania. 3) University of Bucharest, Romania. 4) Institute of National Economy, Bucharest, Romania
Efektivitas Pendirian Akademi Komunitas dalam Mendukung Masterplan Percepatan dan Perluasan Pembangunan Ekonomi Indonesia (MP3EI)
Authors: Ulumudin Ikhya
Published: July 2022

This study is aimed at figure out the suitability of study programs in the communityÂ college to the regionâ€™s potential and the level of interest of senior secondary school graduatesÂ in continuing to community college in order to support the Master Plan for the AccelerationÂ and Expansion of Indonesiaâ€™s Economic Development (MP3EI) program. The method usedÂ was survey, while the data and information were gathered through Focus Group DiscussionÂ and questionnaire. Result showed that, study programs in Community College of BlitarÂ were less suitable with the regionâ€™s potential, as they only represented the needs forÂ general workforce and senior secondary school graduates were more interested in continuingÂ their study to Blitar Community College.Â ABSTRAKÂ Penelitian ini bertujuan untuk mengetahui kesesuaian program studi padaÂ Akademi Komunitas (AK) terhadap potensi daerah dan mengetahui animo lulusan sekolahÂ menengah (SM) melanjutkan ke AK guna mendukung program Masterplan Percepatan danÂ Perluasan Pembangunan Ekonomi Indonesia (MP3EI). Metode penelitian yang digunakanÂ yaitu metode survei. Data dan informasi studi dikumpulkan melalui Focuss GroupÂ Discussion (FGD) dan penyebaran kuesioner. Simpulan dalam penelitian ini yaitu bahwaÂ program studi AK di Kota Blitar masih kurang sesuai dengan potensi daerah, karena programÂ studi hanya mewakili kebutuhan tenaga kerja secara umum saja dan AK Kota BlitarÂ mendapatkan animo yang cukup besar dari lulusan SM.
User friendly haptic tool for soccer fans with vision disabilities: Design and proof of concept
Authors:   Hellenic Mediterranean University, School of Engineering, Department of Electronic Engineering, Chania, Greece, Maravelakis Emmanuel , Konstantaras Antonios ,   Hellenic Mediterranean University, School of Engineering, Department of Electronic Engineering, Chania, Greece, Kyratsis Panagiotis ,   University of Western Macedonia, School of Engineering, Department of Product and Systems Design Engineering, Kozani, Greece, Bolanakis Nikolaos ,   Hellenic Mediterranean University, School of Engineering, Department of Electronic Engineering, Chania, Greece, Vidakis Nectarios ,   Hellenic Mediterranean University, School of Engineering Department of Mechanical Engineering, Iraklion, Greece, Petousis Markos ,   Hellenic Mediterranean University, School of Engineering Department of Mechanical Engineering, Iraklion, Greece, Kabassi Katerina ,   Ionian University, Faculty of Environment, Department of Environment, Zakynthos, Greece
Published: July 2022

Loss of eyesight inflicts multiple difficulties in everyday lives’ tasks affecting not just the visually impaired but also their loved ones. The sense of being depleted by the otherwise visually perceived satisfaction from attending various events becomes a burden not just in terms of joy but also in relation to accompanying parties. The aim of this research work was to provide a worthy perceived experience of attending a soccer match with the company of a friend, centered at the visually impaired person’s needs and perspective. The methodology developed was based on a holistic approach combining a number of creative tools, in order to explore, visualize and evaluate the proposed solutions, with advanced CAD modeling, rendering techniques and 3D printing technology for improved representation and prototyping of the final product. Evaluation via multi-criteria decisionma-ing casted the developed system as quite usable, suitable for assisting the visually impaired users in absorbing valuable information regarding the real time progress of a live soccer event using the selves-developed tac-tile interface. That way, visually impaired people are able to use the final product with a great deal of success and “feel the view” and the “time” in a variety of cases, allowing them to better enjoy attending an entertainment event, such as soccer, with the interactive company of a friend.
Identifikasi Bidang Gelincir Pemicu Longsor dengan Metode Geolistrik Resistivitas 2 Dimensi Daerah Wisata Bukit Chinangkiek, Kabupaten Solok, Sumatera Barat
Authors: Chaniago Akbar , Afdal Afdal
Published: July 2022

Telah dilakukan penelitian untuk menentukan bidang gelincir pada daerah Wisata Bukit Chinangkiek, Kabupaten Solok menggunakanÂ  metode geolistrik resistivitas dua dimensi konfigurasi Wenner-Schlumberger. Penelitian ini dilakukan pada 2 lintasan dengan panjang bentangan 80 meter menggunakan software Res2Dinv. Hasil pengolahan data berupa penampang bawah permukaan yang menunjukkan bahwa daerah penelitian diduga memiliki lapisan bidang gelincir berupa batuan gamping pada kedalaman 7-11 meter dengan nilai tahanan jenis berkisar 80-190 â„¦ dan ketebalan Â± 3 meter
Rancang Bangun Sistem Pengukuran Frekuensi Getaran Akustik Berbasis Directional Coupler Serat Optik
Authors: Lopa Reforma , Harmadi Harmadi
Published: July 2022

Telah dirancang sistem pengukuran frekuensi getaran akustik berbasis directional coupler serat optik. Pembuatan directional coupler dilakukan dengan mengupas coating dan cladding serat optik dan menggandengkan core nya. Sensor berbasis directional coupler serat optik yang dibuat dengan tiga variasi panjang kupasan dan dipilih berdasarkan nilai coupling ratio. Sistem pengukuran terdiri dari sumber cahaya dioda laser dengan panjang gelombang 532 nm, serat optik FD-620-10 terkopel, fotodioda OPT101 sebagai detektor, pre-amplifier BC547 sebagai pengkondisi sinyal, mikrokontroler Arduino UNO sebagai pengolah sinyal dan LCD sebagai output visual hasil pengukuran. Mikrokontroler Arduino UNO menghitung jumlah cacahan perubahan tegangan keluaran fotodioda OPT 101 yang telah dikondisikan pada rangkaian pre-amplifier. Tampilan pada LCD digunakan untuk mengukur frekuensi getaran akustik dengan mendeteksi perubahan tegangan keluaran fotodioda OPT101. Perubahan terjadi akibat pergeseran posisi sumber getaran terhadap serat optik. Sumber getaran berupa speaker piezoelektrik yang dibangkitkan dengan function generator. Pengujian dan analisis data menunjukkan bahwa sistem sensor mampu mengukur frekuensi getaran akustik pada rentang 100 Hz â€“ 40.000 Hz dengan ketelitian 99,65 %.
Rancang Bangun Prototipe Sistem Peringatan Dini Tanah Longsor Berbasis Potensiometer Geser dan Sensor Kelembaban Tanah dengan Keluaran Notifikasi SMS
Authors: Wahyuni Febi Dwi , Wildian Wildian
Published: July 2022

Tanah longsor adalah pergerakan massa tanah atau batuan menuruni lereng. Penelitian ini berfokus pada rancang-bangun prototipe sistem peringatan dini tanah longsor berbasis potensiometer geser dan sensor kelembaban tanah dengan keluaran berupa notifikasi peringatan. Pergerakan massa tanah dideteksi menggunakan potensiometer geser yang memiliki pergeseran maksimum 6 cm, sedangkan kelembaban tanah dideteksi menggunakan modul sensor YL-69. Data masukan kedua sensor diolah oleh modul mikrokontroler Arduino Uno dan hasilnya dikeluarkan dalam bentuk informasi peringatan yang ditampilkan di LCD dan juga SMS menggunakan modul GSM SIM800L. Hasil pengujian menunjukkan bahwa prototipe sistem memiliki resolusi keluaran sebesar 0,8883 V/cm dan mampu mendeteksi pergeseran dengan kesalahan rata-rata 0.217%. Kondisi yang dinotifikasi via SMS adalah â€œsiagaâ€ dan â€œbahayaâ€. Kondisi tanah yang terdiri dari dua lapisan (tanah liat di bagian bawah dan tanah gembur di atasnya), notifikasi â€œsiagaâ€ terkirim ketika terjadi pergeseran 4,68 cm dan kadar air tanah 65%, dan â€œbahayaâ€ pada pergeseran 5,06 cm dan kadar air tanah 62%.
Karakterisasi Arus-Tegangan Sensor Gas Hidrogen Dari Bahan Semikonduktor Heterokontak ZnO/SnO2 (TiO2)
Authors: Rosa Melia , Elvaswer Elvaswer
Published: July 2022

Penelitian ini bertujuan untuk menganalisi pengaruh penambahan doping TiO2pada bahan dasar hetero ZnO/SnO2 sebagai sensor gas hidrogen, terhadap karakteristik I-V, nilai sensitivitas, konduktivitas, selektivitas, waktu respon, dan karakterisasi XRD. Metode yang digunakan pada penelitian ini adalah metode solid state reaction berbentuk pelet dimana kalsinasi pada suhu 500Â°C selama 4 jam, penggerusan, kompaksi, dan proses sintering pada suhu 700Â°C selama 4 jam. Berdasarkan pengukuran karakteristik I-V diperoleh hasil bahwa bahan ZnO/SnO2 (6% mol TiO2) memiliki sensitivitas tertinggi yaitu 6,06 pada tegangan operasional 12 volt. Nilai selektivitas tertinggi diperoleh pada sampel ZnO/SnO2 (4% mol TiO2) yaitu 1,89 pada tegangan operasional 30 volt. Nilai konduktivitas tertinggi diperoleh padaÂ  sampel ZnO/SnO2 (6% mol TiO2) yaitu 9,81x 10-3 / Î©mÂ  pada lingkungan hidrogen. Sedangkan waktu respon sampel ZnO/SnO2 (8% mol TiO2) pada gas hidrogen yaitu 30 sekonÂ  dan untuk gas oksigen yaitu 36 sekon pada tegangan operasional 12 volt. Dari hasil XRD menujukkan bahwa sampel SnO2Â  didoping TiO2 Â mempunyai ukuran kristal lebih besar daripada sampel SnO2 tanpa doping. Campuran SnO2 didoping TiO2 telah terbentuk senyawa baru yaitu Sn2 (TiO4) yang ditandai dengan adanya puncak-puncak baru pada grafik.
Rancang Bangun Alat Deteksi Kebocoran Gas LPG serta Penanggulangan Kebakaran Menggunakan Sensor MQ2 dan Sensor Api Berbasis IoT
Authors: Aulia Ilma , Munasir Munasir
Published: July 2022

Penelitian ini bertujuan membuat alat deteksi kebocoran gas LPG serta penanggulangannya jika terjadi kebakaran. Pada pengoperasianya akan dibantu oleh Node MCU ESP8266 sebagai perangkat mikrokontroler untuk menjalankan berbagai macam perintah. Adaptor DC 12V sebagai penyedia sumber tenaga listrik untuk Node MCU ESP8266 dan adaptor 5V digunakan untuk penyedia sumber tenaga listrik untuk menghidupkan kipas dan water pump. Sensor MQ2 memiliki nilai presentase error rata-rata sebesar 0,63% dan sensor api dapat mendeteksi keberadaan api sampai jarak 70 cm. Ketika sensor MQ2 mendeteksi kadar gas lebih dari 100 ppm, maka sistem pengaman akan bekerja dengan cara menghidupkan kipas dan memberikan peringatan bahaya dengan cara menghidupkan buzzer. Ketika api terdeteksi oleh sensor api, maka sistem pengaman akan bekerja dengan cara menghidupkan water pump dan memberikan peringatan bahaya dengan cara menghidupkan buzzer. Setiap komponen yang telah dirangkai dapat berajalan dengan baik melalui pemrograman yang telah dibuat dan sistem berhasil mengirim informasi ke aplikasi Blynk saat terjadi perubahan kondisi yang terdeteksi sehingga aplikasi Blynk dapat menampilkan notifikasi pada smartphone ketika terdeteksi bahaya kebocoran gas dan bahaya kebakaran.Â
Visualisasi Scattering Cross Section Versus Scattering Angle Pada Hamburan Rutherford Atom Timbal dengan Matrix Laboratory
Authors: Supriadi Bambang , Nuraini Lailatul , Istighfarini Elma Tri , Lubna Lubna , Mardhiana Hana , Savana Bunga Aurel
Published: July 2022

Atom is the smallest component of a chemical element that cannot be changed chemically. The concept of the atom was put forward by several scientists, one of which was Rutherford. From the results of Rutherford's experiment, it is known that most of the alpha particles fired at a thin gold plate are transmitted or scattered with a small scattering angle. In this study, the effect of incident energy (E) on the scattering cross section (Ïƒ) and scattering angle (Î˜) will be simulated using Matrix Laboratory (MATLAB). Based on the results of the research that has been done, it can be concluded that in Rutherford scattering, the greater the scattering angle, the smaller the scattering cross section. This is shown in the graph generated in the Matrix Laboratory (MATLAB) simulation in the form of a decreasing exponential graph.
Analisis Nilai Suseptibilitas Magnetik Tanah Untuk Pendugaan Erosi di Daerah Sekitar Jalan Lintas Sungai Penuh-Tapan
Authors: Derajah Alawiah , Budiman Arif
Published: July 2022

Telah dilakukan penelitian untuk menentukan mineral pengontrol suseptibilitas magnetik dan pendugaan kedalaman dan luas daerah yang mengalami erosi melalui analisis nilai suseptibilitas magnetik sampel tanah di daerah sekitar Jalan Lintas Sungai Penuh-Tapan. Sampel tanah diambil dari dua lokasi yaitu daerah lereng dan daerah acuan yang berjarak 300 m dari daerah lereng. Pada daerah lereng sampel diambil pada lokasi seluas 3000 m2 yang terdiri dari 40 titik dengan variasi kedalaman pada masing-masing titik yaitu 10, 20, 30, 40, 50 dan 60 cm, sedangkan pada daerah acuan sampel diambil pada satu titik dengan variasi kedalaman yaitu 10, 20, 30, 40, 50, 60, 70, 80, 90 dan 100 cm. Pengukuran suseptibilitas magnetik sampel menggunakan Magnetic Suseptibility Meter dengan frekuensi rendah. Hasil pengukuran suseptibilitas magnetik sampel menunjukkan bahwa nilai suseptibilitas magnetik sampel bervariasi berkisar antara 63,1Ã—10-8 m3kg-1 sampai 964,4Ã—10-8 m3kg-1 untuk daerah lereng dan dari 802,8Ã—10-8 m3kg-1 sampai 921,5Ã—10-8 m3kg-1 untuk daerah acuan. Hasil penelitian menunjukkan sampel tanah pada daerah penelitian merupakan jenis tanah andosol dengan mineral pengontrol nilai suseptibilitas magnetiknya adalah ilmenit. Berdasarkan perbandingan nilai suseptibilitas magnetik sampel di daerah lereng dengan daerah acuan, diduga bahwa erosi telah terjadi hingga kedalaman 60 cm dan persentase luas daerah yang mengalami erosi adalah 36,6% (kedalaman 20 cm), 34,7% (kedalaman 40 cm) dan 28,7%.
Pengukuran Konsentrasi Gas Radon (222Rn) dan Thoron (220Rn) Menggunakan Detektor CR-39 Pada Rumah Penduduk Di Nagari Alam Pauh Duo, Solok Selatan
Authors: Pahrudin Pahrudin , Milvita Dian , Wahyudi Wahyudi
Published: July 2022

Telah dilakukan pengukuran konsentrasi gas radon (222Rn) dan gas thoron (220Rn) menggunakan metode pasif CR-39 pada rumah penduduk di Nagari Alam Pauh Duo, Kabupaten Solok Selatan. Pengukuran bertujuan untuk mengetahui dosis efektif yang diterima oleh penduduk di daerah tersebut. Pengukuran gas radon dan gas thoron dilakukan menggunakan 50 buah detektor CR-39 yang dipasang pada 3 lokasi selama 3 bulan. Hasil pengukuran konsentrasi gas radon terkecil yaitu 7 Â± 0,50 Bq/m3 sampai dengan yang terbesar yaitu 37 Â± 2,65 Bq/m3 dengan rata-rata 14 Â± 0,99 Bq/m3, sedangkan konsentrasi gas thoron yang terkecil yaitu 3 Â± 0,18 Bq/m3 dan yang terbesar yaitu 25 Â± 1,78 Bq/m3 dengan rata-rata 6,25 Â± 0,45 Bq/m3. Hasil konsentrasi gas radon dan gas thoron yang didapatkan masih di bawah batas yang direkomendasikan oleh UNSCEAR tahun 2008 yaitu 300 Bq/m3. Estimasi dosis efektif yang diterima penduduk akibat paparan gas radon dan gas thoron yaitu 0,94 mSv/tahun dan 0,63 mSv/tahun. Nilai dosis efektif yang didapatkan tidak melebihi ambang batas yang telah direkomendasikan oleh PERKA BAPETEN No. 4 pasal 23 ayat 1 tahun 2013 yaitu 1 mSv/tahun.
Implementasi Metode Deteksi Hujan Es Berbasis Data Radar Cuaca Menggunakan Algoritma Severe Hail Index (SHI)
Authors: Ali Abdullah , Saâ€™adah Umi
Published: July 2022

Metode Severe Hail Index (SHI) Â ini merupakan metode pendeteksian hujan es yang paling komprehensif dengan output berupa indeks probabilitas hujan es (pada setiap ukuran) dalam satuan Jm-1s-1, probabilitas severe hail dalam satuan %, dan prakiraan ukuran maksimum batu es yang mencapai permukaan dalam satuan milimeter. Penelitian ini bertujuan mengimplementasikan metode SHI sebagai detektor dan prediktor kejadian hujan es di Indonesia. Dari 13 kejadian hujan es diperoleh nilai maksimum indeks probabilitas hujan es untuk setiap ukuran sebesar 269 Jm-1s-1 dan nilai minimum 0 Jm-1s-1, nilai maksimum indeks probabilitas severe hail sebesar 64.4 % dan nilai minimum 0%, sedangkan nilai maksimum prakiraan ukuran maksimum batu es mencapai 63.76 mm dan minimum 8.25 mm. Simulasi dilakukan dengan membandingkan nilai SHI dengan WT yang kemudian digunakan untuk menentukan nilai POD (Possibility of Detection), CSI (Critical Succes Index), dan FAR (False Alarm Ratio). POD pada simulasi ini diperoleh nilai 0.307 dan 0.230, FAR 0.0, dan CSI 0.307. FAR bernilai 0.0 menunjukkan metode ini mempunyai tingkat kesalahan yang sangat kecil untuk mendeteksi atau memperdiksi adanya huajan es namun nilai POD masih tergolong rendah, sehingga metode ini juga cukup sulit untuk mendeteksi eksistenesi hail di lapangan. Hasil simulasi tersebut menunjukkan bahwa perlunya modifikasi pada perumusan WT untuk meningkatkan performa metode SHI dalam mendeteksi dan memprediksi kejadian hujan es.
Rancang Bangun Alat Praktikum Hukum Ohm Digital Berbasis Arduino Mega 2560
Authors: Prastia Andi , Harijanto Alex , Prastowo Sri Handono Budi
Published: July 2022

Alat praktikum di laboratorium fisika sebagian besar menggunakan alat-alat praktikum konvensional. Penelitian ini bertujuan untuk membuat rancang bangun alat praktikum hukum ohm digital berbasis Arduino Mega 2560. Metode penelitian yang digunakan adalah Research and Development dengan model Nieveen meliputi Preliminary Research, Prototyping Stage, dan Assesment Stage. Penelitian ini dilakukan sampai tahap Prototyping Stage. Hasil penelitian menunjukkan bahwa rancang bangun alat praktikum hukum ohm digital telah valid dan memiliki keunggulan dapat menampilkan hasil pengukuran resistansi, arus, dan tegangan secara real-time pada LCD dengan akurasi nilai error % (kesalahan) pengukuran sebesar -5,36% hingga 2,27% dan nilai koefisien determinasi Â R2 â‰¥ 0,9997 Â pada seluruh hasil kalibrasi.
Molecular phylogeny of Annonaceae species from Binh Chau-Phuoc Buu Nature Reserve based on two chloroplast gene regions
Authors: Nguyen Ngoc Duyen , Luu Thao Nguyen , Trinh Ngoc Nam , Le Van Son , Van Hong Thien
Published: July 2022

In this study, based on molecular biology techniques, the matK and trnL-F regions of ten Annonaceae species grown in Binh Chau-Phuoc Buu Nature Reserve, Vietnam were successfully amplified and sequenced for the first time. Along with other highly homologous DNA sequences from the GenBank database, the molecular phylogeny of ten studied species was also established. By using the alignment tool of NCBI database, the percentage of identity among sequences of studied species was also presented. The study aims to partially contribute to the further understanding of the evolutionary relationships among Annonaceae species.
Viaje mágico y espiritual a una tierra de manzanos
Authors:   Universitat de Valencia (España), Albert Rodrigo Maria
Published: July 2022

From the current context of contemporary spiritualities, we wanted to approach an emerging form of tourism known as spiritual or mystical. In order to do this we have focused on the most important European destination in spiritual milieu: Glastonbury. Based on a qualitative methodology, field observa‑ tions and in‑depth interviews, we got closer to both those who organize these kinds of trips and those who are interested in participating on them. The work presented here is based on a specific case: Sandra and Pablo; a couple of Spaniards who, for several years, have accompanied groups of spiritual seekers on their pilgrimage to this magical and sacred place, emphasizing that they are people from outside the tourism sector.
The world’s clearest view of stars is seen from the highest point of the Antarctic ice sheet
Authors: Ma Bin
Published: July 2022

The characteristics of an astronomical site limits the performance of telescopes. “Seeing”, the blurring of stellar images by atmospheric turbulence, is a key factor. Our measurements confirm that Dome A, the highest point on the Antarctic plateau, has the best seeing conditions on the earth. A telescope at Dome A could observe the universe both clearer and deeper than other ground telescopes.
Outcomes and efficiency of managing patients admitted for surgery for spinal metastases
Authors: Zanaty Ahmed , George K. Joshi
Published: July 2022

Background:

This study evaluated the current pathways for dealing with patients admitted for surgery to address spinal metastases.

Methods:

In this retrospective analysis (2016–2021), the following variables were studied admission, demographics, length of stay, critical care admission, hospital costs, primary cancer, and average survival.

Results:

There were 306 patients admitted from 2016 to 2021; 66 were planned admissions, 203 were emergency admissions, and 37 were day case admission. Patients averaged 65.4 years old. About 75% (203) were emergently admitted, while 25% (66) had planned elective admissions. Their respective lengths of stay were 16.5 versus 5.74 days. Interestingly, nearly half of the emergency admissions (46.3%) did not have surgery during that admission. The most common level for metastatic disease was the thoracic spine in both groups (53% in the elective vs. 62% emergency groups). The most common primary lesions included lung, breast, and prostate in both groups. The average survival in the emergency admission group was 9.1 months and the planned admission group was 13.07 months. Notably, the costs of emergent care were much higher than planned admissions.

Conclusion:

The pathway for spinal metastases is unique in that though there is a pathway for late-stage disease, there is not one for early disease. As a result, the majority of patients admitted for surgery for spinal metastases come in as an emergency rather than as a planned admission. Yet, close to half do not end up having surgery during that emergency admission to the spinal center. The cost of emergency care is significantly higher versus planned elective care for spinal metastatic disease. A service transformation is suggested to combat these problems with a pathway for managing all spinal metastases, rather than just metastatic spinal cord compression.
Short Review/Perspective on Adjacent Segment Disease (ASD) Following Cervical Fusion Versus Arthroplasty
Authors: Epstein Nancy E. , Agulnick Marc A.
Published: July 2022

Background:

Although the incidence of radiographic Adjacent Segment Disease (ASD) following anterior cervical diskectomy/fusion (ACDF) or cervical disc arthroplasty (CDA) typically ranges from 2-4%/year, reportedly fewer patients are symptomatic, and even fewer require secondary surgery.

Methods:

Multiple studies have documented a 2-4% incidence of radiographic ASD following either ACDF or CDA per year. However, fewer are symptomatic from ASD, and even fewer require additional surgery/reoperations.

Results:

In a meta-analysis (2016) involving 83 papers, the incidence of radiographic ASD per year was 2.79%, but symptomatic disease was present in just 1.43% of patients with only 0.24% requiring secondary surgery. In another study (2019) involving 38,149 patients undergoing ACDF, 2.9% (1092 patients; 0.62% per year) had radiographic ASD within an average of 4.66 postoperative years; the younger the patient at the index surgery, the higher the reoperation rate (i.e. < 40 years of age 4.56 X reoperations vs. <70 at 2.1 X reoperations). In a meta-analysis of 32 articles focusing on ASD 12–24 months following CDA, adjacent segment degeneration (ASDeg) occurred in 5.15% of patients, but adjacent segment disease (AS Dis) was noted in just 0.2%/ year. Further, AS degeneration occurred in 7.4% of patients after 1-level vs. 15.6% following 2 level fusions, confirming that CDA’s “motion-sparing” design did not produce the “anticipated” beneficial results.

Conclusion:

The incidence of radiographic ASD ranges from 2-4% per year for ACDF and CDA. Additionally, both demonstrate lesser frequencies of symptomatic ASD, and the need for secondary surgery. Further, doubling the frequency of ASD following 2 vs. 1-level CDA, should prompt surgeons to limit surgery to only essential levels.
Glass Ceiling Effect in What Men Want Movie (2019)
Authors: Safitri Dian Ari , Trisnawati Ririn Kurnia , Agustina Mia Fitria
Published: July 2022

The glass ceiling effect is a phenomenon that often happens in society but is still rarely addressed. It is because this phenomenon is oftentimes hard to notice since we are already used to it. However, this kind of issue is apparent in What Men Want (2019) movie. This current study aims to analyze the glass ceiling effect faced by the main character in the movie, Ali Davis. The method used to help analyze the data is a qualitative method by taking dialogues from the movie as the main data of this research. The result shows the aspects that indicate the glass ceiling effect in the movie are the employee promotion system, discrimination from male coworkers, and discrimination from a prospective client. Eventually, this study reveals that the glass ceiling effect still occurs in the modern era. Therefore, this current study suggests that companies have to be mindful when they set policies and a good understanding of gender equality among people in the workplace is also needed to minimize the similar cases.   
The Issue of Teachers’ Professional Competence and Pedagogical Competence in English Teaching- Learning Process
Authors: Billik Marthisa Olivia
Published: July 2022

The existence of development in the education field requires teachers to be able to act more than just a teacher who knows how to teach. To become an advanced teacher, a teacher should have good professional competence and pedagogical competence. However, there are still problems that hinder the teacher when conducted the teaching and learning process. The problems that appear in the English classroom are teachers’ professional competence and teachers’ pedagogical competence.

            This study aims to describe and explain teachers’ experience in dealing with their professional and pedagogical competence in teaching the English language. This is a qualitative study and used interview and observation as the instruments to collect the data from 3 teachers as the participant in SMA NegeriBenlutuSo’e - East Nusa Tenggara.
            The results of the study found that teachers’ low professional and pedagogical competence caused the teachers to have inadequate English teaching competence in teaching. It caused the teachers to teach the students with inappropriate learning materials, monotonous learning activities, and uncooperative assessment methods. The results of this study also recommend that teachers have high English language proficiency and teaching competence to be able to teach English in Senior High School.
Virtual Reality adoption in Indonesia higher Education from lecturer’s voice
Authors: Nur Dedi Rahman
Published: July 2022

Indonesia's development of information and communication technology has overgrown. This can be seen by users of smartphones, a variety of Indonesian blogs, facebook or other social media and internet users. Virtual Reality is one of the information and communication technologies which started to develop in Indonesia. For this study the exploratory design approach was used to investigate the perceptions of lecturers regarding the teaching and learning adoption of VR with some indicators the benefits, ease of use, Challenges to the Adoption and skill of VR, that VR has the potential to enrich with interactive simulations and stunning visuals that immerse students in authentic learning experiences also it can push the boundaries of the traditional classroom to be engaging, creative, and responsive to the needs of the student.
The Mechanics Accuracy of Students’ Writing
Authors: Yuliawati Lilik
Published: July 2022

In writing courses, the students tend to be more aware of technical errors in writing including the mechanics. Conversely, they tend to focus more on the idea or content of their writing when they produce papers to fulfill the assignment of non-writing courses. Whereas, the punctuation errors and misspelled words will make the meaning of the sentence ambiguous. This study aims to find out the degree of mechanics accuracy of students’ writings and what kind of mechanics mistakes mostly produced. The mechanics that were analyzed include punctuation, capitalization, spelling, italicization, and numbering of 65 writing assignments of three non-writing courses. The method used in this study was content analysis. The result of this study revealed that there were number of mechanics mistakes in students writing assignments, but those mistakes did not greatly affect readers’ understanding. The punctuation using of students’ writing assignments was 41% accurate; the capitalization using was 82% accurate; the spelling using was 83% accurate; the italicization using was 96% accurate; and the numbering using was 98% accurate.
DERIVATIONAL AFFIXATION ON THE STUDENT’S RECOUNT TEXT
Authors: Hasanah Nunur , Perdana Indra , Wihastyanang Wardani Dwi
Published: July 2022

Language is important in our life, especially for communication. Talking about language was certainly lead to the discussion of linguistic, such as morphology. In the morphology there is derivational and inflectional affixation. This thesis focused on analyzing derivational affixation applied in the students’ writing task to find out types of derivational affixation used by the students’ and how is derivational affixation processes in these types. Derivation is the ability to derive new words forms that important to become competence users of English. The researcher interested to analyze derivational affixation in writing skills which is a complicated skill with complete language component to be mastered, such as vocabulary. The researcher chooses writing text from the students because it is interesting to study whether the students’ writing text contain derivational affixation even though they have not received about the material formally. So, the object of this research is writing task produced by the XII-Bahasa students’ at MAN 2 Jombang conducted from the instruction to make a recount text shared through google form. This thesis using qualitative content analysis method. The result of this thesis analyzed according to the theory of Katamba (2006) and Booij (2007), then it shows that the researcher found two types of derivational affixation applied, namely prefixes and suffixes. This research support theory of Katamba (2006) stated that infixes rarely use in English. Then, types of derivational affixation applied on the students’ writing task categorized into their process of derive new words. Prefixes found consist of two kinds in derivational affixation process those are nominal affixation and adjectival affixation. Then, all kinds of derivational affixation process found in suffixes those are nominal affixation, verbal affixation, adjectival affixation and adverbial affixation. To conclude there is many types of derivational affixation applied in the student’s recount text.
Integrating Local Contents into Junior High School Student's English Learning Material
Authors: Hidayati Yeni Nurmala , Basuki Yudi
Published: July 2022

This study aimed at developing English local content material for seventh grade students of junior high school in SMPN 1 Trenggalek. Trenggalek local values were integrated into particular topics being addressed in the form of a textbook based on the 2013 curriculum.  The data were gained through interview, observation and questionnaire. The result revealed that the locally – based developed material was successful to fulfill Trenggalek local content. For teacher, it was applied easily to achieve contextual learning and promote students’ interests. For students, it motivated them and their interest in learning English better and improved their ability to talk about their own area and environment.
Precise Transfer of an Aluminium Atom: An Avenue to Aluminium Heterocycles
Authors: Zhang Xin , Wang Hongyu , Lan Xiaofang , Mei Yanbo , Liu Liu Leo
Published: July 2022

Synthetic chemistry targets building up molecular complexity using simple substrates through simple processes. We disclose an unprecedented Al-atom transfer strategy for the synthesis of aluminium heterocycles with high atom economy. This strategy involves an effective cycloaddition of a free carbazolyl-aluminylene with unsaturated hydrocarbons, followed by facile cleavage of the N-Al bond. The aluminylene formally behaves as an [Al+] cation transfer reagent in a two-step manner, and the only byproduct is a carbazolide salt that can be utilized to regenerate the aluminylene. The carbazolyl Al-heterocycles show unique luminescent properties, one of which exhibits dual emission. Our approach not only has a significant impact on the future design of single-atom addition reactions, but also paves the way for emissive materials based on Al-heterocycles.
Total Synthesis of Peshawaraquinone
Authors: de Castro Tomas , Huang David , Sumby Christopher , Lawrence Andrew , George Jonathan
Published: July 2022

A concise synthesis of a stereochemically complex meroterpenoid, peshawaraquinone, via the unsymmetrical dimerization of its achiral precursor, dehydro-alpha-lapachone, is reported. Enabled by reversible oxa-6pi-electrocyclizations of (2H)-pyran intermediates, the base-catalyzed dimerization sets up an intramolecular (3+2) cycloaddition, with the formation of six stereocenters during the cascade. Combining the synthesis and in situ dimerization of dehydro-alpha-lapachone allows a one-step total synthesis of peshawaraquinone from lawsone and prenal.
In vitro antioxidant and anticholinesterase activities of ethanolic turmeric crude
extract
Authors: Abbas S. , Latif S.M. , Muhamad I.I. , Hesan M.A. , Kormin F.
Published: July 2022

This study was aimed at exploring the antioxidant and anticholinesterase effect of
ethanolic turmeric crude extract. The antioxidant activity was determined by using the 1,1-
diphenyl-2-picrylhydrazyl (DPPH) free radical-scavenging activity, (2,2'-azino-bis(3-
ethylbenzothiazoline-6-sulfonic acid)) (ABTS) and ferric reducing antioxidant power
(FRAP) values. Ethanolic crude extract of turmeric showed good antioxidant and
anticholinesterase activities (% I); the activity was, 80.2±1.30%, 75.6±1.23% and
10.43±0.28% for ABTS, DPPH and FRAP, respectively, and 69.0±1.85% and
70.5±1.11% for AChE and BChE, respectively. However, the maximum% I for ABTS,
DPPH and FRAP, that is, 87.2±1.34%, 86.0±1.59% and 19.36±0.37 µg FSE, respectively,
were shown by positive control ascorbic acid, and for acetylcholinesterase (AChE) and
butyrylcholinesterase (BChE) inhibition, 86.69±1.24 and 89.3±1.01%, respectively, by
galanthamine. Turmeric provides a potential natural source of bioactive compounds and is
valuable to human health.
Drying kinetics and quality aspects of bitter gourd (Momordica charantia) dried
in a novel cabinet dryer
Authors: Yasmin S. , Hasan M. , Sohany M. , Sarker M.S.H.
Published: July 2022

An attempt was taken to investigate the effect of drying air temperature and slice thickness
on the drying kinetics and quality of bitter gourd (Momordica charantia) dried in a novel
cabinet dryer (HSTU Fruit and Vegetable Dryer). Fresh bitter gourd was sorted, cleaned,
and sliced at 4 mm, 6 mm, and 8 mm thickness. All the samples were blanched in boiling
water at 100°C for 3 mins. Then the slices with an initial moisture content of 96.47±0.6%
were dried, spreading as a thin layer in the trays of the cabinet dryer using three drying air
temperatures of 60, 70, and 80°C until the desired final moisture content (MC) of
4.66±0.4% was obtained. The results indicated that the shortest drying time (2.08 hrs) was
required by the sample of 4 mm thickness, which was dried at 80°C to reduce moisture
from 96.47±0.6% initial (wet basis, wb) to 4.66±0.4% final moisture (wb). The sample of
8 mm thickness dried at 60°C took the longest drying time (6.67 hrs). The higher drying
rate (34.32 gm H2O/min.cm2
) was noticed at a constant drying rate period in the case of a
6 mm thick slice at 70°C. Whereas a lower drying rate (9.29 gm H2O/min.cm2
) was
observed for drying 8 mm slices using 60°C air temperature. Even though, the effect of
blanching on drying characteristics of bitter gourd was not noticed so much, the drying
rate was found to be increased slightly of pretreated bitter gourd thus drying time was
shorter. A comparison on colour analysis of both fresh and blanched bitter gourd showed
that a 6 mm slice dried at 70°C was found better in retaining green colour than other
samples. The rehydration ratio (6.63±0.62) and the percentage of water uptake
(86.75±0.58) of rehydrated pretreated bitter gourd were also higher in a dried sample of 6
mm. Therefore, pretreated bitter gourd is suggested to dry quickly using 70oC in a cabinet
dryer slicing at 6 mm thickness to obtain a better quality dried product.
The effect of dual modification with annealing and Heat Moisture Treatment
(HMT) on physicochemical properties of jack bean starch (Canavalia ensiformis)
Authors: Ariyantoro A.R. , Fitriyani A. , Affandi D.R. , Muhammad D.R.A. , Yulviatun A. , Nishizu T.
Published: July 2022

In this study, the effect of the dual modification with annealing and Heat Moisture
Treatment (HMT) on the physicochemical properties of jack bean starch was investigated.
Native jack bean starch was modified by the annealing method with a moisture ratio of 1:2
and 1:3 at 50°C, 55°C, and 60°C for 24 hrs. Furthermore, the annealing method was
combined with HMT at 30% moisture at 110°C for 16 hrs. The results showed that the
dual modification process decreased the whiteness, amylose content, swelling power,
solubility, setback viscosity, and breakdown viscosity of the jack bean starch. On the
contrary, it led to an increase in the water adsorption, paste clarity, pasting temperature
and stability ratio of the starch. The stability ratio of native jack bean starch, the sample
treated by the single annealing, and the dual modification were 0.56, 0.62, and 0.86,
respectively, indicating that the sample treated with dual modification was more stable at
high temperature and shear stress. The dual modification did not affect the crystalline xray diffraction patterns. The findings emphasized the potential of using a dual
modification to alternate the characteristic of jack bean starch.
Pengembangan E-LKPD Materi Pertumbuhan dan Perkembangan Berorientasi Pendekatan Saintifik untuk Melatihkan Keterampilan Proses Sains
Authors: Windari Greatania Ines , Rahayu Yuni Sri , Dewi Sari Kusuma
Published: July 2022

Seiring bertambahnya jumlah pasien positif COVID-19 di Indonesia, Kemendikbud merekomendasikan agar melakukan program belajar dari rumah. Program ini telah dilaksanakan di berbagai jenjang pendidikan di Indonesia. Sebagai bagian dari adaptasi kebiasaan belajar baru di masa pandemi Covid-19, salah satu hal yang perlu untuk proses adaptasi dalam pembelajaran yaitu hadirnya bahan ajar online dengan media yang menarik dan mudah diakses peserta didik. Tujuan dari penelitian ini yaitu mengembangkan bahan ajar LKPD elektronik (E-LKPD) berorientasi pendekatan saintifik untuk melatihkan keterampilan proses sains pada materi pertumbuhan dan perkembangan yang layak berdasarkan validitas, kepraktisan, dan keefektifan. Metode pengembangan yang digunakan yaitu dengan 4D (Define, Design, Develop, dan Disseminate). Pengembangan E-LKPD ini untuk melihat validitas yang diperoleh dari hasil validasi dari para ahli; kepraktisan yang diperoleh dari data observasi keterlaksanaan dari para observer; keefektifan yang diperoleh dari data hasil belajar peserta didik kelas XII SMA Labschool Unesa 1 Surabaya yaitu melakukan pre-test dan post-test, dan data respon peserta didik. Teknik analisis data yang digunakan yaitu deskriptif kuantitatif. Penelitian pengembangan E-LKPD ini menghasilkan persentase validitas mencapai 94,75% sehingga dinyatakan sangat valid, persentase kepraktisan mencapai 98,3% sehingga dinyatakan sangat praktis, dan persentase keefektifan diantaranya yaitu ketuntasan tes keterampilan proses sains mencapai 100%, ketercapaian indikator keterampilan proses sains melalui pre-test dan post-test mencapai 92,4%, dan respon dari peserta didik mencapai 100%. Dengan demikian, dapat dinyatakan bahwa E-LKPD materi pertumbuhan dan perkembangan berorientasi pendekatan saintifik untuk melatihkan keterampilan proses sains layak untuk digunakan dalam pembelajaran berdasarkan validitas, kepraktisan, keefektifan.

Kata Kunci: E-LKPD, pendekatan saintifik, keterampilan proses sains, materi pertumbuhan dan perkembangan.