bluuebunny/crossref_metadata_2025_split huggingface dataset:
Barriers to participation in research as perceived by undergraduate medical students: A cross-sectional study from Qassim.
Authors: Atta Elmannan Abeer Abuzeid , Alrebish Saleh , Alqarzai Rahaf Khalid , Alshubrmi Atheen Ahmad , Alammar Abdulrahman Yousef , Alsaeed Hamad Saleh 
Published: September 2022

Background: Medical students` engagement in research activities continues to be below the expectation. In this study we aimed to investigate students` views about research, and to identify the barriers preventing them from participation in research projects. Methods: A cross-sectional study was carried out in Qassim University. A total of 230 students were included. The perceptions of students were assessed using a 16-item questionnaire. The mean scores were compared between students using Mann-Whitney test .Factors associated with students` perception of research barriers were analyzed using four separate logistic regression models. Results: The overall response rate was 89.4%. The results indicate that the students generally possess a moderately positive attitude towards research with a mean score of 14.8±2.7 (range: 5-25). A substantial number of participants reported their willingness to take part in any research-related task (77.0%). However, the participants highly agreed that lack of time (70.4%), lack of supervision and guidance (72.6%), lack of research training and support (73.9%), and lack of research exposure and opportunities (75.2%) were major barriers to their participation in research .We found that students having lower CGPA ranks are almost three times more likely to indicate lack of time as a challenge (AOR: 2.94; 95% CI: 1.09,7.94; p.value=0.033). Overall, female students were more likely to report concerns about research training and availability of research opportunities, while male students were more likely to indicate lack of time and lack of supervision as research barriers. Conclusions: The barriers addressed in the current study —both discretely and cumulatively—are highly demotivating for students, and negatively affect their participation in research. Efforts should be invested to shift the focus from providing superficial research exposure to incorporating more in-depth and effective research training for undergraduate students
Broken Effects? How to Reduce False Positives in Panel Regressions
Authors: Li Xina , Wibbens Phebo D. 
Published: September 2022

Many published papers in the management field have used statistical methods that, according to the latest insights in econometrics, can lead to elevated rates of false positives: results that appear “significant,” whereas they are not. The question is how problematic these less robust econometric analyses are in practice for management research. This paper presents simulations and an empirical replication to investigate two widespread but now largely discredited practices in panel data analysis: nonclustered standard errors and random effects (RE). The simulations indicate that these two practices can lead to strongly elevated rates of false positives in typical empirical settings studied in management research. The often-advocated Hausman test does not always prevent false positives in RE regressions. Replication of a published regression that used RE and classic standard errors yields that many of the coefficients reported as significant in the original analysis become insignificant when using fixed effects and clustered standard errors, on a slightly different sample. Based on the findings in this paper, published results using nonclustered standard errors or RE estimates for panel data should be interpreted with great care, because the probability that they are false positives can be much larger than reported. Going forward, empirical researchers should cluster standard errors to account for serial correlation and use fixed rather than random effects to account for unobserved heterogeneity. Funding: X. Li received financial support from the Ian Potter ’93D PhD Award. Supplemental Material: The online appendix is available at https://doi.org/10.1287/stsc.2022.0172 .
Mid-IR spectroscopy of Er3+doped low-phonon CsCdCl3and CsPbCl3crystals
Authors: Brown Ei Ei , Fleischman Zackery D. , McKay Jason , Hommerich Uwe , Kabir Al Amin , Riggins Jazmine , Trivedi Sudhir , Dubinskii Mark 
Published: September 2022

The mid-IR spectroscopic properties ofEr3+doped low-phononCsCdCl3andCsPbCl3crystals grown by the Bridgman technique have been investigated. Using optical excitations at∼800nmand∼660nm, both crystals exhibited IR emissions at∼1.55,∼2.75,∼3.5, and∼4.5µmat room temperature. The mid-IR emission at 4.5 µm, originating from the4I9/2→4I11/2transition, showed a long emission lifetime of∼11.6msforEr3+dopedCsCdCl3, whereasEr3+dopedCsPbCl3exhibited a shorter lifetime of∼1.8ms. The measured emission lifetimes of the4I9/2state were nearly independent of the temperature, indicating a negligibly small nonradiative decay rate through multiphonon relaxation, as predicted by the energy-gap law for low-maximum-phonon energy hosts. The room temperature stimulated emission cross sections for the4I9/2→4I11/2transition inEr3+dopedCsCdCl3andCsPbCl3were determined to be∼0.14×10−20cm2and∼0.41×10−20cm2, respectively. The results of Judd–Ofelt analysis are presented and discussed.
Sources and rates of organic substrates in the production of pear Cascatense on quince ‘CP’
Authors: Verlindo Andricia , Biasi Luiz Antonio , Botelho Renato Vasconcelos , Müller Marcelo Marques Lopes 
Published: September 2022

The nutritional state of cultivated plants can be influenced, due to the poultry litter doses and basalt powder, thus affecting its proper growth. This work aimed to evaluate the nutritional efficiency of pear, cultivated in different poultry litter doses and basalt powder. The experiment was conducted in the orchard of the fruit growing sector of the Department of Agronomy at the Universidade Estadual do Centro-Oeste, Guarapuava- PR, in 2010, spaced 2.5 x 0.5 m, with the following treatments in the planting hole and reapplied in August of 2012: T1) without fertilization; T2) 2 kg of poultry litter; T3) 2 kg of poultry litter + 2 kg of basalt powder; T4) 4 kg of poultry litter; T5) 4 kg of poultry litter + 2 kg of basalt powder. Samples of the root system, and the shoot segmented in side branches and trunk were collected in January / 2014 (1,190 days) for chemical analysis of nutrient content and dry matter. With these results were calculated the indexes: absorption efficiency; transport efficiency and nutrient utilization efficiency. The treatment 4 kg of poultry litter, result in a higher absorption efficiency ratio for N, and higher utilization efficiency index for S. The transport efficiency suffered a little variation due to the used doses.
Predição de produção do abacaxizeiro ‘Vitória’ utilizando modelagem neurofuzzy e regressão linear
Authors: Oliveira da Silva Paula , Gustavo Fernandes Mesquita Frankley , Barbosa Vilela Guilherme , Facco Pegoraro Rodinei , Martins Maia Victor , Koiti Kondo Marcos 
Published: September 2022

Atualmente, a utilização de sistemas inteligentes híbridos que utilizam a combinação de técnicas de inteligência artificial como, por exemplo, redes neurais e lógica fuzzy, tem-se tornado comuns na elaboração de modelos complexos de simulação e estimar parâmetros desejados. O objetivo deste estudo foi desenvolver sistemas de inferência adaptativos neurofuzzy (ANFIS) para predizer a produção do abacaxizeiro ‘Vitória’ e realizar análise comparativa destes modelos com outro modelo de predição que utiliza aproximação quadrática. Os modelos de predição desenvolvidos calculam a massa fresca do fruto (MFFR) a partir da massa fresca da folha D (MFFD) e/ou diâmetro do talo (DT), medidos no momento da indução floral. Para a construção dos sistemas ANFIS foi utilizada a função genfisOptions da toolbox Neuro Fuzzy Designer do Matlab (Mathworks®- Neuro Fuzzy Designer, R2018a). Foram construídos sistemas ANFIS considerando cada uma dessas variáveis como entrada (DT e MFFD), isoladamente, e de forma combinada. O erro da simulação da produção foi calculado utilizando a raiz quadrada do erro médio quadrado (RMSE). Para todos os sistemas ANFIS construídos, o RMSE obtido foi menor que o valor produzido quando realizou-se a simulação por meio da regressão linear ou aproximação quadrática. O menor valor de RMSE foi obtido quando utilizou-se a combinação dos parâmetros MFFD e DT para construção do sistema ANFIS. Portanto, de acordo com este estudo, a utilização de modelagem neurofuzzy, mais especificadamente de sistemas ANFIS, para a predição de produção do abacaxizeiro ‘Vitória’ apresenta melhores resultados que a utilização de regressão linear ou aproximação quadrática.
Plant growth and yield of garlic (Allium sativum L.) under applications of liquid biofertilizers
Authors: Lana Regina Maria Quintão , Nunes Gontijo Luciana , Camargos de Oliveira Roberta , Martins Magela Mara Lúcia , Queiroz Luz José Magno , Camargo Reginaldo 
Published: September 2022

Garlic is a highly relevant vegetable crop from the food and medicinal point of view in the culture of different peoples around the world. The new discoveries of the active components present in the bulbs increase the demand and require that garlic’s production system meets the demands of the market in quantity and quality. The nutrition in vegetables is crucial for the production and protection of crops, and in the garlic crop it is usual practice to apply minerals via leaf application during the cycle. The use and benefits of organic sources associated with minerals in the garlic crop raise questions about the viability of the leaf application method in this crop. The objective of this study was to evaluate the effectiveness of biofertilizers containing humic acids applied via leaf application in the crop of garlic (Allium sativum) in relation to the control (absence of humic acid). There was no significant variation for the foliar application of biofertilizers for the development parameters (aerial part, root system and bulb formation) and garlic production classes. Biofertilizer 4 at the dose of 30 L ha-1 stood out compared to the Biofertilizers 2 and 3 for total productivity. The use of foliar biofertilizers with organic components associated with minerals can be considered an interesting alternative for the cultivation of garlic, especially if evaluated in the long term and considering the global benefits to the cultivation system.
Hedge and central pruning in a high-density pecan orchard in southern Brazil
Authors: Hellwig Cristiano Geremias , Martins Carlos Roberto , Vaz Lima Antonio Davi , Farias Barreto Caroline , Farias Medeiros Julio Cesar , Barbosa Malgarim Marcelo 
Published: September 2022

This study aimed at evaluating the influence of two pruning methods, as well as absence of pruning, on vegetative and productive development and in the quality of pecan fruits in a high-density orchard. The experiment was conducted with the cultivar Melhorada in a commercial pecan orchard in municipality of Santa Rosa, Rio Grande do Sul (RS), Brazil. The study was carried out between July 2018 and June 2020. In a randomized block design, the following treatments were applied: no pruning, hedge pruning and central pruning. Hedge pruning increased limb growth, while central pruning decreased the number of dry branches. Fruit production oscillated in the cycles. In the first, production was higher when central pruning was conducted. In the second cycle, it was higher in unpruned trees. Even though both pruning methods decreased the number of fruit with closed epicarps, they did not affect most variables of fruit quality. Therefore, results show that pruning methods promote vegetative development of pecan trees, reducing dry branches, but they are inconclusive regarding their production and have no significant effect on the main variables of their fruit quality. The evaluation and continuity of pruning for more cycles is important to obtain the most consistent results for indicating the best alternative for producers.
A modalidade de aplicação afeta a seletividade de herbicidas para a cultura do alho
Authors: Guerra Naiara , Dalla Costa Gabriel , Coratto Demartini Samyra , Radzinski Angela Sofia , Poeta Fermino Junior Paulo Cesar , Mendes de Oliveira Neto Antonio 
Published: September 2022

O principal método de controle de plantas daninhas na cultura do alho é o químico, contudo essa cultura é extremamente sensível à herbicidas, podendo sofrer injúrias e redução de produtividade dependendo dos produtos utilizados, modalidade de aplicação, dose, cultivar, dentre outros. Assim o objetivo do presente estudo foi avaliar a seletividade de herbicidas para a cultura do alho cultivar Chonan, aplicados em diferentes modalidades de aplicação. Para isso foi conduzido, em casa de vegetação, um experimento em delineamento inteiramente casualizado, com quatro repetições. O experimento contou com 16 tratamentos, dispostos em esquema fatorial 8 x 2. O primeiro fator é representado por uma testemunha sem herbicida e sete herbicidas (linuron, diuron, pendimethalin, s-metolachlor, oxyfluorfen, flumioxazin e oxydiazon), e o segundo fator pela modalidade de aplicação (pré-emergência ou pós emergência). Foi avaliado a fitointoxicação, taxa fotossintética, morfometria de estômatos, diâmetro de bulbos e produtividade da cultura do alho. As aplicações em pré-emergência foram mais seletivas em comparação com as de pós emergência. Os herbicidas linuron, diuron, s-metolachlor e oxadiazon aplicados na pré emergência e s-metolachlor, oxyfluorfen, flumioxazin e oxadiazon em pós-emergência não foram seletivos para o alho, cultivar Chonan. O pendimethalin foi o herbicida que apresentou a maior seletividade, independentemente da época de aplicação. Enquanto que oxyfluorfen e flumioxazin foram seletivos quando aplicados em pré-emergência e linuron e diuron em pós emergência do alho cultivar Chonan.
Linguistic Diversity on Center Stage: Rewriting Anthropology from the Margins of an MSI
Authors: Trinch Shonna , Cassidy Barbara , Suazo Bianca , Mallol Nunez Jadeline 
Published: September 2022

We explore the use of linguistic varieties other than standard American (and academic) English in academia and in general, and particularly in a college theater program called Seeing Rape. Seeing Rape aspires to bring anthropology to a broader public to eradicate sexualized violence on campus. We discuss the possibilities and challenges encountered in trying to center different languages and dialects at the college through our program.
KAJIAN KETELITIAN PENGUKURAN KERANGKA KONTROL VERTIKAL MENGGUNAKAN TOTAL STATION AKURASI SUDUT 1” DAN 5”
Authors: Prasidya Anindya Sricandra , Riyadi Gondang 
Published: September 2022

Pengukuran Kerangka Kontrol Vertikal (KKV) dalam pemetaan topografi pada dasarnya bisa dilaksanakan secara geometrik dengan sipat datar maupun secara trigonometrik memanfaatkan data sudut vertikal dan jarak menggunakan Total Station (TS). Pada pengukuran KKV dengan TS, khususnya pada rentang jarak-dekat, ukuran sudut menjadi hal yang sangat berpengaruh pada nilai beda tinggi yang dihasilkan. Oleh karena itu ketelitian pengukuran KKV dengan menggunakan TS berbagai spektrum akurasi sudut potensial untuk dikaji. Penelitian ini bertujuan untuk menentukan ketelitian hasil pengukuran KKV dengan TS akurasi sudut 1” dan 5” serta membandingkan ketelitian tersebut dengan nilai yang dianggap benar dari Digital Level. Penelitian ini memakai metode trigonometrik teknik resiprokal dalam pengukuran 12 pilar titik kontrol berbentuk loop. Data diolah dengan metode Bowditch dan Hitung Kuadrat Terkecil metode parameter, serta dengan uji-t dan uji-F. Hasil menunjukkan bahwa ketelitian KKV hasil dari TS 1” lebih teliti daripada hasil dari TS 5” dari sisi fΔh, simpangan baku, dan kelas JKV. Nilai H dan simpangan baku H hasil TS 1” memiliki kedekatan yang tinggi dengan nilai hasil dari Digital Level dibanding hasil dari TS 5” jika ditinjau dari uji statistik pada tingkat kepercayaan 95%. Dengan demikian, dapat disimpulkan bahwa semakin rendah akurasi sudut TS, maka semakin berkurang ketelitiannya dalam pengukuran KKV.
PEMANFAATAN INTERPRETASI HIBRIDA CITRA LANDSAT DALAM IDENTIFIKASI KERAPATAN BANGUNAN UNTUK PEMANTAUAN PERKEMBANGAN WILAYAH KOTA UNGARAN
Authors: Sukmono Abdi 
Published: September 2022

Kota Ungaran merupakan salah satu kota yang berkembang cukup pesat di wilayah Provinsi Jawa Tengah. Wilayah ini sangat berkembang sebagai perifer penyangga Kota Semarang. Perkembangan kota ungaran ini dapat dilihat dengan memantau perkembangan fisik Kota Ungaran, elemen fisik kota yang dapat dipantau salah satunya adalah kerapatan bangunan. Identifikasi kerapatan bangunan secara multitemporal dapat menunjukkan perkembangan wilayah suatu kota. Identifikasi kerapatan bangunan ini dapat menggunakan data citra satelit Landsat melalui metode interpretasi hibrida. Interpretasi hibrida merupakan kombinasi antara teknik interpretasi visual dan digital (tranformasi urban index). Interpretasi visual dilakukan dengan pemetaan lahan terbangun secara delianiasi blok. Sedangkan interpretasi digital dilakukan dengan teknik tranformasi urban index. Hasil interpretasi menunjukkan terjadinya peningkatan kerapatan bangunan periode 2009-2018. Kecepatan rata-rata perubahan luasan bangunan dari tahun 2009-2018 sebesar 43,83 Ha/pertahun. Arah perubahan kepadatan bangunan pada tahun 2009-2018 di Kecamatan Ungaran Timur dan Ungaran Barat mengarah dari timur ke barat, perubahan kepadatan bangunan banyak terjadi di daerah pusat kota sepanjang jalan utama dan daerah pinggiran perkotaan. Hasil identifikasi kerapatan bangunan dengan metode interpretasi hibrida ini dilakukan validasi dengan data pengukuran kerapatan bangunan lapangan. Hasil validasi menunjukkan ketelitian metode ini sebesar 89,78 %.
ANALISIS FISIK DAN LINGKUNGAN KESESUAIAN LAHAN UNTUK REKOMENDASI ARAHAN TATA RUANG KOTA MADIUN
Authors: Alina Aldea Noor 
Published: September 2022

Kota Madiun merupakan Kota yang ditetapkan sebagai pusat Wilayah Pengembangan (WP) Madiun dan sekitarnya serta pusat pertumbuhan Ekonomi Jawa Timur bagian barat. Arahan perencanaan inilah yang semakin mendorong munculnya perubahan penggunaan lahan dan pesatnya perkembangan Kota Madiun. Selain perkembangan di aspek ekonomi, Kota Madiun diharapkan tetap berupaya mempertahankan lahan baku sawahnya. Hal inilah yang mendasari perlunya ada analisa kembali terhadap kondisi fisik wilayah yang mempertimbangkan Daya Dukung Wilayah Kota Madiun sehingga dapat diberikan rekomendasi kesesuaian lahan yang tepat dalam perencanaan wilayah Kota Madiun. Berdasarkan hasil analisa kesesuaian lahan didapatkan hasil rekomendasi kesesuaian lahan di Kota Madiun adalah sebesar 121,982 Ha sebagai Kawasan Konservasi dan Jalur Hijau Pengaman, sebesar 489,718 Ha sebagai Kawasan Lahan Baku Pertanian, sebesar 482,376 Ha sebagai Kawasan Permukiman Perkotaan dengan Kepadatan Tinggi, dan 2543,551 Ha sebagai Kawasan Pusat Kota. Dengan perlunya perhatian terhadap daya dukung air di Kota Madiun yang mengalami defisit pada tahun 2040 berdasarkan hasil perhitungan daya dukung daya tampung wilayah.
PRA-KAJIAN DATA MULTIBEAM ECHOSOUNDER UNTUK PENDUGAAN SEDIMEN PERAIRAN DANGKAL
Authors: Sasmito Bandi , Firdaus Hana Sugiastu ,  Awaluddin Moehammad , Nugraha Arief Laila 
Published: September 2022

ABSTRAK Studi ini mengkaji tentang penggunaan data Echosounder Multibeam (MBES) untuk pendugaan sedimen perairan dangkal dengan wilayah studi Pantai Kartini Jepara. Sedimentasi merupakan salah satu proses yang terjadi disebabkan oleh alam dan aktivitas manusia yang berujung pada pengendapan. MBES digunakan untuk pemetaan seperti kolom air dan pemetaan backscatter. Nilai intensitas gelombang akustik yang dipancarkan dihubungkan dengan uji laboratorium sedimen, rentang kelas tertentu yang dihasilkan dari nilai intensitas gelombang akustik menunjukkan klasifikasi sedimen yang ada di dasar perairan dimana perbedaan klasifikasi dipengaruhi yang dipancarkan oleh instrumen, sehingga penyebaran sedimen dapat terpetakan di dasar perairan. Pra-studi ini melakukan kajian terhadap pengambilan data gelombang akustik dengan MBES dan pengambilan sampel sedimen yang kemudian dilakukan uji laboratorium untuk nantinya dilanjutkan pada pendugaan sedimen.Kata kunci: Nilai Intensitas Akustik, Multibeam Echosounder, Sedimen, Pantai ABSTRACT This study examines the use of Multibeam Echosounder (MBES) data to estimate shallow water sediment in the study area of Kartini Beach, Jepara. Sedimentation is a process that occurs due to nature and human activities that lead to deposition. MBES is used for mappings such as water column and backscatter mapping. The emitted acoustic wave intensity value is related to the sediment laboratory test, the range of a certain class resulting from the acoustic wave intensity value shows the classification of sediment in the bottom of the water where classification differences are influenced by the emission by the instrument, so that the distribution of sediment can be mapped on the bottom of the water This pre-study conducted a study on acoustic wave data collection using MBES and sediment sampling which was then carried out by laboratory tests to later proceed with sediment estimation. Keywords: Acoustic Intensity Value, Multibeam Echosounder, Sediment, Beach
PENGUKURAN LUAS METODE TERESTRIS MENGGUNAKAN ALAT UKUR GPS DAN METODE FOTOGRAMETRI MENGGUNAKAN FOTO UDARA UAV DI KOLAM RETENSI MUKTIHARJO KIDUL SEMARANG
Authors: Sudarsono Bambang , Sabri L M , Dinoto Tjiong Susilo 
Published: September 2022

Semarang merupakan ibukota Provinsi Jawa Tengah yang perkembangan kotanya sangat pesat. Selain itu Semarang juga merupakan pusat perdagangan dan bisnis, pusat pendidikan dan lain-lain. Di sisi lain karena kepadatan penduduknya tinggi, maka timbul berbagai masalah antara lain terdapat kawasan kumuh, kawasan terdampak genangan banjir air pasang (rob) dan lain-lain. Kemudian untuk menanggulangi banjir Pemerintah Pusat dan Pemerintah Daerah secara bersama-sama melakukan berbagai pembangunan prasarana fisik antara lain membangun Kolam Retensi yang terletak di wilayah Muktiharjo Kidul. Tujuan pembangunan Kolam Retensi adalah untuk menampung air ketika terjadi hujan besar di sekitar Muktiharjo Kidul, sehingga diharapkan dapat mengurangi banjir di sekitar wilayah kolam retensi. Pembangunan Kolam Retensi Muktiharjo Kidul sangat penting, oleh karena itu perlu dilakukan penelitian luas area yang akan digunakan untuk menghitung kemampuan daya tampung volume kolam retensi. Pengukuran luas dilakukan dengan metode terestris menggunakan alat ukur GPS dan metode fotogrametri menggunakan foto udara UAV. Data hasil perhitungan luas Kolam Retensi dapat digunakan untuk keperluan evaluasi terhadap pembangunan Kolam Retensi Muktiharjo Kidul. Dari hasil pengukuran menggunakan alat ukur GPS metode RTK luas Kolam Retensi sebesar 53.198 m2 , sedangkan dari hasil pengukuran dengan menggunakan data foto udara UAV diperoleh luas sebesar 53.196 m2. Berdasarkan hasil pengukuran tersebut, maka pengukuran luas menggunakan foto udara UAV hasilnya cukup bagus dan mendekati pengukuran dengan alat ukur GPS