bluuebunny/crossref_metadata_2025 huggingface dataset:
Peran Adversity Quotient Peserta Didik Kelas VIII SMP Tipe Climber dalam Pemecahan Masalah Matematis di Masa Pandemi Covid-19
Authors: Kusumastuti Tiara , Nuriadin Ishaq
Published: August 2021

Pada saat ini virus covid-19 sedang menggemparkan dunia. Semenjak virus ini menyebar hampir ke seluruh dunia, pemerintah memberikan kebijakan bagi seluruh sekolah untuk melakukan pembelajaran secara daring. Penelitian ini bertujuan untuk menganalisis peran adversity quotient peserta didik kelas VIII SMP tipe climber dalam pemecahan masalah matematis di masa pandemi covid-19. Sampel dalam penelitian ini adalah kelas VIII-B di SMP Taman Harapan 1 Bekasi. Instrumen yang digunakan dalam penelitian ini berupa tes kemampuan pemecahan masalah matematis dan angket AQ. Hasil penelitian menunjukkan bahwa terdapat 15 peserta didik dengan AQ tipe climber sedangkan 5 peserta didik lainnya memiliki AQ tipe camper. Hasil penelitian menunjukkan bahwa peserta didik yang memiliki AQ tipe climber terkadang melakukan kesalahan kecil dan mengalami kesulitan saat memecahkan masalah matematis meskipun begitu peserta didik dengan AQ tipe climber tetap berusaha untuk menyelesaikan masalah pada soal dengan baik dan mampu memenuhi semua indikator pemecahan masalah. Sehingga AQ tipe climber berperan dalam pemecahan masalah matematis peserta didik.
Analisis Kemampuan Pemahaman Konsep Mahasiswa dalam Menyelesaikan Soal Persamaan Diferensial Ditinjau dari Gaya Kognitif
Authors: Tsurayya Ayu , Ningrum Nurjanah Kurnia
Published: August 2021

Pemahaman konsep merupakan kemampuan dasar yang harus dimiliki mahasiswa sebelum menyelesaikan suatu permasalahan matematika. Artikel ini bertujuan untuk mendeskripsikan kemampuan pemahaman konsep mahasiswa dalam menyelesaikan soal persamaan diferensial ditinjau dari gaya kognitif. Penelitian ini dilakukan di FKIP Universitas Muhammadiyah Prof. Dr. Hamka dengan subjek penelitian 36 mahasiswa pendidikan matematika semester 4 yang sedang mengikuti mata kuliah persamaan diferensial. Metode penelitian menggunakan pendekatan deskriptif kualitatif. Data dikumpulkan melalui tes dan wawancara. Instrumen tes yang pertama yaitu menggunakan tes GEFT (Group Embedded Figure Test) dan tes pemahaman konsep. Dimana hasil penelitian ini persentase kemampuan pemahaman konsep secara keseluruhan 46,50% dimana masih tergolong rendah. Dalam tingkat pemahaman konsepnya, kategori tinggi 25%, kategori sedang 61,11% dan kategori rendah 13,89%. Jika dilihat perindikator presentase pencapaian yang sudah mencapai baik untuk indikator I1, I3 dan I4 dan indikator I2, I5, I6 dan I7 masih dalam kategori rendah. Kemampuan pemahaman konsep kategori tinggi terdapat pada gaya kognitif FI baik FIK maupun FIL, kategori sedang dan rendah dimiliki gaya kognitif FIL sampai FDL.
Pengembangan Video Pembelajaran Materi Kubus dan Balok untuk Meningkatkan Pemahaman Konsep Matematis Peserta Didik
Authors: Rofilah Surur , Tsurayya Ayu
Published: August 2021

Peserta didik di Indonesia mengalami kesulitan dalam memahami suatu konsep, penerapan konsep, dan keterampilan dalam mengerjakan soal pada kubus dan balok. Untuk mempermudah peserta didik dalam memahami suatu konsep, perlu menggunakan suatu media pembelajaran. Salah satunya menggunakan video pembelajaran. Penelitian ini bertujuan untuk mengembangkan video pembelajaran yang dapat meningkatkan pemahaman konsep matematis peserta didik dan untuk mengetahui kelayakan video pembelajaran yang digunakan dalam materi kubus dan balok. Jenis penelitian ini yaitu penelitian pengembangan dengan menggunakan model 4-D. Hasil penelitian yaitu menghasilkan video pembelajaran materi kubus dan balok untuk meningkatkan pemahaman konsep matematis peserta didik dan hasil validasi kelayakan video pembelajaran materi kubus dan balok oleh ahli materi memperoleh penilaian dengan persentase 88% berkategori baik, sedangkan oleh ahli media memperoleh penilaian dengan persentase sebesar 89% berkategori baik. Dapat disimpulkan bahwa video pembelajaran materi kubus dan balok efektif digunakan sebagai media pembelajaran yang mampu meningkatkan pemahaman konsep matematis peserta didik karena efektifitas video pembelajaran materi kubus dan balok dalam uji coba kelompok kecil memperoleh persentase sebesar 87% berkategori baik.  Sedangkan dalam uji coba kelompok besar memperoleh persentase 50% sebelum menggunakan video pembelajaran dan 78% setelah menggunakan video pembelajaran.
Keefektifan Model Pembelajaran Problem Based Learning dan Problem Solving Terhadap Kemampuan Berpikir Kritis Matematika Siswa Kelas V
Authors: Prayoga Aji , Setyaningtyas Eunice Widyanti
Published: August 2021

Penelitian ini digunakan guna melihat efektivitas model pembelajaran Problem Based Learning dan Problem-solving ditinjau dari kemampuan berpikir kritis siswa kelas 5 SD. Subjek dari penelitian ini ialah siswa kelas 5 di Sekolah Dasar Negeri Pakis 1 dengan jumlah siswa di kelas parallel A dan B 41 siswa, 20 di kelas 5A dan 20 di kelas 5B. teknik yang digunakan untuk mengumpulkan data ialah observasi dan tes. Penelitian ini dilakukan dengan menggunakan instrumen RPP Problem Based Learning dan Problem-solving serta menggunakan instrumen kemampuan berpikir kritis siswa. Analisis data yang digunakan dalam penelitian ini ialah analisis deskripsi kuantitatif sebagai uji prasyarat, uji T dan uji N-Gain. Hasil pengujian hipotesis, dengan uji t-sig (2-tailed) di peroleh 0,000 < 0,05 dengan thitung 6.942 maka H0 ditolak dapat di artikan bahwa terdapat perbedaan yang segnifikan terhadap kemampuan berpikir kritis matematika. Hal tersebut juga dikuatkan dengan meningkatnya kemampuan berpikir kritis siswa kelas 5A yang diberikan perlakuan menggunakan model pembelajaran Problem Based Learning dengan rata-rata skor awal yang di peroleh 69,60 meningkat menjadi 87,35 sedangkan di kelas 5B yang diberikan perlakuan menggunakan model pembelajaran Problem-solving perolehan skor awal 65,75 hanya meningkat menjadi 79,20. Hal tersebut menunjukkan bahwa model Problem Based Learning lebih efektif dibandingkan dengan model Problem-solving dilihat dari kemampuan berpikir kritis matematika.
SARS-CoV-2 may affect the immune response via direct inhibition of T cell receptor: Mechanistic hypothesis and rationale
Authors: Sigalov Alexander B
Published: August 2021

During co-evolution with their hosts, many viruses have evolved a membrane fusion mechanism to facilitate host cell entry. Examples include human immunodeficiency virus type 1 (HIV-1) and severe acute respiratory syndrome coronaviruses 1 and 2 (SARS-CoV-1 and SARS-CoV-2). These viruses can also infect immune cells (e.g., T cells), providing one of the possible mechanisms for the T cell lymphopenia observed in patients with these infections. Previously, we hypothesized and confirmed in vivo that like HIV-1, SARS-CoV-1 can use its fusion domain not only to enter the T cell but also to directly inhibit T cell receptor signaling. Here, based on the analysis of available structural and clinical data, we hypothesize that SARS-CoV-2 may use a similar "disarm the alarm" strategy to suppress immune responses. We also discuss the implications of this hypothesis for better understanding coronavirus disease 2019 (COVID-19) pathology, developing effective COVID-19 vaccines and improving clinical outcomes for COVID-19 patients.
Analisis Laporan Keuangan Berdasarkan Rasio Likuiditas Pada PT. Bank Perkreditan Rakyat Batang Kapas
Authors: Cintia Ilvi , Marlius Doni
Published: August 2021

This study was conducted to determine the level of profitability in PT. BPR Batang Kapas which includes Cash Ratio (CR), Quick Ratio (QR) and Loan to Deposit Ratio (LDR). This research is quantitative, where this quantitative method analyzes the calculation of the liquidity ratio at PT. BPR Batang Kapas. This study uses the financial statements of PT. BPR Batang Kapas for the 2017-2019 financial year. The type of data used is secondary data in the form of company financial performance data which includes data on Chas Ratio (CR), Quick Ratio (QR) and Loan to Deposit Ratio (LDR). Where the Cash Ratio (CR) of PT. BPR Batang Kapasin 2017-2019 is in a healthy position, namely at >=4,05% position. For Quick Ratio (QR) PT. BPR Batang Kapas in 2017-2019 are in a healthy position or it can be said that the bank is able to bear its short-term burden with criteria >100%. While for Loan to Deposit Ratio (LDR) PT. BPR Batang Kapas 2017 and 2018 the bank is said to be healthy, because it is in a 75% < LDR ≤ 85%, but in 2019 it shows that the bank is said to be quite healthy, because it is in the 85% < LDR ≤ 100% position.
SEKTOR UNGGULAN DI ERA PANDEMI COVID 19 WILAYAH REGIONAL SUMATERA
Authors: Aji Maulana Malik Sebdo , Nasriyah Nuri
Published: August 2021

The Sumatra region is the region with the second largest contribution after Java Island,which experienced a smaller contraction compared to the national figure. The Sumatraregion has the opportunity to increase its contribution to the Indonesian economy. Thepurpose of this study was to analyze the leading sectors in the Sumatra region. The dataanalysis method used is Location Quotient analysis. The results showed that the Sumatraregion in general has advantages in the agricultural and mining sectors. Almost all provincesin the Sumatra region have a competitive advantage in the agricultural sector (only RiauIslands Province which does not have a competitive advantage in the agricultural sector).Only three provinces have a competitive advantage in the manufacturing sector. The threeprovinces are Riau Province, Bangka Belitung Islands Province and Riau Islands Province. Thisshows that the processing industry in the Sumatra region has not yet developed or is stillinferior to other regions.
Analisis Rasio Profitabilitas PT. Bank Perkreditan Rakyat Lengayang Cabang Surantih
Authors: Syawia Annisa Aziza , Marlius Doni
Published: August 2021

The purpose of this study was to determine how the profitability ratio at PT. BPR Lengayang Cabang Surantih. The research method used is quantitative data analysis method, where this quantitative method analyzes the calculation of the Bank's profitability level. The type of data used is secondary data obtained from reports from the Financial Services Authority and BPR Publication Reports for the 2017-2019 period. The results of this study indicate that the level of ROA (1.5%) according to BI standards is still in the very good category, so that banks can operate properly in using and utilizing their assets to generate profits. The level of ROE (23%) indicates that the bank's ability to generate net income is unhealthy. While the NPM level (51%) is in the very poor category, banks are below the average rating of BI, so they have not operated well in generating net profit.
IMPLEMENTASI MARKETING MIX PADA SITUS ONLINE Rumah123.com
Authors: JurnalBukitPengharapan
Published: August 2021

Tujuan penelitian adalah menghasilkan suatu Implementasi Marketing Mix Pada Situs Online Rumah123.ComUntuk Menghadapi Persaingan Usaha. Analisis kualitatif mengamati secara langsung keadaan sistem pemasarandan analisis kuantitatif digunakan untuk melihat sebaran margin pemasaran. Implimentasi strategi 7 PS(komunikasi, marketing, akuntabilitas) dalam mengembangkan jejaring kemitraan menuju lembaga yang mandirisecara bertahap atau serentak namun berkelanjutan, sehingga strategi marketing (komponen product, price,promotion, place, people, process, physical evidence) dapat mengembangkan jejaring kemitraan menujuperusahaan yang berkualitas. Di Rumah123.com dalam setiap pelaksanaan proses dari menjalankan bisnisnyamemiliki PIC disetiap part dari proses tersebut sehingga dlam setiap prosesnya dapat dimonitor mengutamakankepuasan dan kesuksesan dari agent/customer
The Magnitude of the Impact of HIV on the Human Beings in the World’s Richest Country, America: The Misery of African Americans
Authors: Abdi Muse
Published: August 2021

Disproportionate rates of HIV infection among African Americans is an increasing concern inthe United States. The purpose of this study is to investigate the effect of HIV preventionprograms on African Americans and social determinants fueling HIV-related risk behaviors.Using literature, this study analyzed the incidences of HIV infection among African Americansin the United States and the effectiveness of the prevention programs. African Americansstruggle with mass incarceration, drugs, stigma, criminalization, and lack of economicopportunities, which contribute to the HIV-related risk behaviors. The existing traditionalprevention programs in place are not working for African Americans. Tailored and culturallyrelevant programs should be designed and implemented. Further studies are needed to establishthe causal relationships and develop preventive measures.
Empowering Families Through Research-Based Museum Exhibits on Child Development: Impacts on Parents and Implications for Researcher- Museum Partnerships
Authors: Niebaum Jesse C , Michaelson Laura Elizabeth , Brenkert Sarah , Dostart Grace Lois , Munakata Yuko
Published: August 2021

Increased recognition of the need to study child development in more naturalistic contexts has led to the formation of partnerships between researchers and museums. Researcher- museum partnerships provide researchers access to families and more naturalistic contexts within which to study child development. Although benefits for researchers are well established, benefits for the museum or visitors are less clear. To investigate potential benefits of research exhibits for parents, we compared the impact of a research toy exhibit and permanent museum exhibits at a children’s museum. Although parents reported that their children had less fun at the research exhibit, parents learned more at the research exhibit and reported that the research exhibit raised more questions and had greater relevance to them compared with permanent exhibits. Parents were also more likely to apply ideas from the research exhibit into their daily life compared with permanent exhibits. Our findings support unique benefits for research exhibits for parents and indicate a need to showcase potential learning opportunities for visitors in future research-museum partnerships.
The Polymath Questionnaire: A Correlational Study between Polymath Belief, Self-Efficacy, and Personality
Authors: Fernandes Shannon John
Published: August 2021

This study attempts to explore the idea of a ‘polymath’ and treats education and learning as an end in itself, rather than a means. The paper focuses on the relationship between polymath beliefs, a sub-type of self-efficacy, i.e. the extent to which an individual finds themselves to be competent to carry out the different tasks in several areas. The major distinction between self-efficacy as an umbrella term and the Polymath Belief is that the latter focuses on one’s perceptions in more than one areas, while the former isn’t particularly dependent on the number of fields/areas pursued. The Polymath Questionnaire was constructed to assess polymath belief, which was correlated with Openness and Self-Efficacy. The study found significant positive correlations. The paper concludes with a discussion on the merits and limitations of the study, and scope for further research.
EarlyBird Technical Manual
Authors: Gaab Nadine , Petscher Yaacov
Published: August 2021

Technical documentation of research design, data collection, analysis, and results associated with the Early Bird Dyslexia Risk and Early Literacy Risk Screener.
Review of “ Scientific History: Experiments in History and Politics from the Bolshevik Revolution to the End of the Cold War” by Elena Aronova
Authors: Klein Ursula
Published: August 2021

Book Review of “ Scientific History: Experiments in History and Politics from the Bolshevik Revolution to the End of the Cold War” by Elena Aronova
How COVID-19 has Impacted American Attitudes Toward China: A Study on Twitter
Authors: Cook Gavin G. , Huang Junming , Xie Yu
Published: August 2021

Past research has studied social determinants of attitudes toward foreign countries. Confounded by potential endogeneity biases due to unobserved factors or reverse causality, the causal impact of these factors on public opinion is usually difficult to establish. Using social media data, we leverage the suddenness of the COVID-19 pandemic to examine whether a major global event has causally changed American views of another country. We collate a database of more than 297 million posts on the social media platform Twitter about China or COVID-19 up to June 2020, and we treat tweeting about COVID-19 as a proxy for individual awareness of COVID-19. Using regression discontinuity and difference-in-difference estimation, we find that awareness of COVID-19 causes a sharp rise in anti-China attitudes. Our work has implications for understanding how self-interest affects policy preference and how Americans view migrant communities.
Biking Where Black: Connecting Transportation Planning and Infrastructure to Disproportionate Policing
Authors: Barajas Jesus
Published: August 2021

This study asks whether deficiencies in transportation are associated with disproportionate policing in Chicago using the case of cycling. I examine how the number of bicycle citations issued per street segment are influenced by the availability of bicycle facilities and street characteristics, controlling for crash incidence, police presence, and neighborhood characteristics. Tickets were issued 8 times more often per capita in majority Black tracts and 3 times more often in majority Latino tracts compared to majority white tracts. More tickets were issued on major streets, but up to 85% fewer were issued when those streets had bike facilities, which were less prevalent in Black and Latino neighborhoods. Tickets were not associated with bicycle injury-crashes and inversely associated with vehicle injury-crashes. Infrastructure inequities compound the effects of racially-biased policing in the context of transportation safety strategies. Remedies include the removal of traffic enforcement from safe systems strategies and equitable investment in cycling.
Uso da gamificação no Ensino de Química
Authors: Rocha Amanda Chelly da , Neto João dos Santos Cabral
Published: August 2021

Neste trabalho, propõe-se o jogo intitulado Q_Quiz, desenvolvido por meio da ferramenta App Inventor para o ensino e aprendizagem dos números quânticos no ensino de Química de alunos do 1° ano do ensino médio, no qual se aborda o processo de evolução dos modelos atômicos. Como objetivo, buscou-se investigar o uso do aplicativo na aprendizagem de conceitos fundamentais no ensino de Química, tendo a gamificação como referência no uso de jogos no processo de aprendizagem. A partir da relação entre a construção dos modelos atômicos e o surgimento dos números quânticos – relação pouco usada nas aulas de Química do ensino médio – o Q_Quiz é um jogo de perguntas e respostas, desenvolvido para smartphones, composto por três fases: a evolução dos modelos atômicos, modelo de Bohr e números quânticos. A distribuição final de pontos obtidos pelos participantes mostra que o jogo é promissor, tanto para a legitimação dos conhecimentos já existentes quanto para a aprendizagem em si.
Combined Hysteroscopy and Laparoscopy in the Evaluation of Patients with Recurrent Pregnancy Loss
Authors: Khameneh Maryam Khayyat
Published: August 2021

Introduction: To determine the relative frequency of gynecological pathologies in patients with recurrent pregnancy loss using combined hysteroscopy and laparoscopy, and to evaluate the potential of this combined strategy in the diagnosis of coexisting pathologies. Methods: Over 6 years, in a large referral infertility clinic and research centre in Tehran, 80 women with the diagnosis of recurrent pregnancy loss underwent hysteroscopy and laparoscopy. Results: Forty nine (61.3%) women had 3 episodes of miscarriage, 9 (11.3%) had 4 occurrence of pregnancy loss and 14 (17.5%) patients had experienced 5 abortions. Also, there were 4 (5%), 2 (2.5%) and 2 (2.5%) participants with 6, 7 and 8 miscarriages, respectively. Thirteen women (16.2%) had normal hysteroscopy, and in 52 (65%) participant's laparoscopy did not reveal abnormal findings. Septate uterus and submucous myomas together, comprised 62 (77.5%) of the recognized pathologies in hysteroscopy. Of the 28 abnormalities found in laparoscopy, 12 (43%) was endometriosis (15% overall) and the others were, pelvic and abdominal adhesions. Conclusion: Combined laparoscopy and hysteroscopy yields more satisfactory diagnostic results compared with hysteroscopy alone. Septate uterus, submucous myomas and endometriosis were common findings in patients with recurrent miscarriage. Especially, patients with recurrent pregnancy loss should be examined for the coexistence of endometriosis
Peanut Response to Flumioxazin and S-Metolachlor Under High Moisture Conditions
Authors: Basinger N.T. , Randell T.M. , Prostko E.P.
Published: August 2021

Georgia produces nearly 51% of the United States peanut (Arachis hypogaea L.) crop. To combat and prevent weed infestations, herbicide programs containing flumioxazin and S-metolachlor are often applied preemergence (PRE). Despite herbicide effectiveness for weed control, peanut injury following heavy rainfall can be problematic. The objective of this study was to evaluate the impact of injury from flumioxazin and S-metolachlor after simulated heavy rainfall events on peanut growth and yield. Plots were planted at the University of Georgia Ponder Research Farm located near Ty Ty, Georgia using conventional tillage practices and twin-row spacing. Treatments included PRE applications of flumioxazin at 0, 0.11 and 0.22 kg ai/ha alone or in combination with S-metolachlor at 0, 1.07, 1.40, 2.80 kg ai/ha and were applied using a CO2-pressurized backpack sprayer. Irrigation and rainfall were ≥20 cm in the 30 days after planting (DAP) to simulate heavy rainfalls. Flumioxazin at 0.22 kg ai/ha caused the greatest visual injury (>60%) and most whole-plant fresh weight/m reductions at 21 DAP compared to other treatments. Peanut density was not impacted by flumioxazin or S-metolachlor. Neither flumioxazin nor S-metolachlor affected J-rooting. Yield was not reduced by any rate of flumioxazin. However, S-metolachlor at 2.80 kg/ha, (2.6X field rate), reduced yields by 8.9% compared to plots where no S-metolachlor or recommended field rates were applied.
O marketing de guerrilha como ferramenta estratégica: uma análise da aplicabilidade em empresas de micro e pequeno porte em tempos de pandemia
Authors: Manoel João Ramos  , Paulo César da Silva Ilha  , Cleiton Rodrigo Hansel  , Alan Gabriel Kappes Camargo  , Daiane Thaís Krindges
Published: August 2021

Este estudo apresenta uma análise das estratégias de marketing de guerrilha utilizadas em ações mercadológicas pelas micro e pequenas empresas do varejo de vestuário instaladas no município de Mercedes-PR, em plena pandemia do COVID-19, sendo estudado o período de março a julho de 2020. A metodologia utilizada foi de cunho exploratório, com amostragem de 88% das empresas do setor. Utilizou-se como técnica de levantamento dos dados a pesquisa tipo Survey com a aplicação de questionário via Google Forms®. Embora exista vasta literatura sobre as diversas vantagens das ações de marketing de guerrilha, especialmente para empresas menores ou com pouca verba publicitária, pois este tipo de marketing exige um menor volume de recursos financeiros e não exige níveis elevados criatividade e conhecimento para criar ações inteligentes e gerar bons resultados, observa-se que a maior parte das empresas pesquisadas (66%) não fazem o uso dessa estratégia, tornando-se mais vulnerável, principalmente em tempos de crise, quando os recursos financeiros se tornam mais escassos,, demandando maior criatividade
A sustentabilidade urbana e a legislação para regularização fundiária no Brasil
Authors: SCHAFER ANDRESSA , Albuquerque Simone Gasperin de
Published: August 2021

O artigo apresenta um estudo sobre a Sustentabilidade Urbana como um meio da Regularização Fundiária. Inicialmente busca-se conceituar e definir a Regularização Fundiária no Ordenamento Jurídico Brasileiro. A problemática discorre sobre a possibilidade ou não do uso da legislação contemporânea sobre Regularização Fundiária ser um mecanismo para implementar a sustentabilidade urbana. A pesquisa analisa a Lei nº. 13.465/2017 e os seus requisitos. Examinam-se os institutos Jurídicos que podem e devem ser utilizados na Regularização Fundiária Urbana, segundo os dispositivos legais. Reflete-se ainda, a efetividade da Regularização Fundiária Urbana no que concerne ao direito à moradia. Observa-se que, para a efetividade do instituto em tela, é preciso que se trabalhe a Regularização Fundiária Urbana em conjunto com outros institutos. Conclui-se pela necessidade de integração da regularização fundiária para a manutenção de um meio ambiente sustentável, já que imprescindíveis para o futuro das próximas gerações. Este trabalho utiliza o método indutivo e o procedimento de pesquisa bibliográfico e documental
Decisão de compra do consumidor na ótica do neuromarketing e na era da conectividade contínua
Authors: Aquino Davi Manoel Krube , Cechett Rodrigo André
Published: August 2021

A conectividade das comunicações e interações está cada vez mais ininterrupta nos moldes da sociedade atual, onde a tomada de decisão de compra dos consumidores recebe grande influência de diversificadas estratégias de marketing, baseadas, principalmente, nos estudos de neuromarketing. O objetivo deste artigo é trazer um entendimento amplificado dos principais fatores que influenciam o consumidor na tomada de decisão de compra, buscando entender com maior clareza seu comportamento e os processos envolvidos nas decisões de compra. Para cumprir com este objetivo, foi conduzida uma pesquisa exploratória a partir da coleta de informações em referências bibliográficas
Cultivation of Organics in Controlled Environment Greenhouse
Authors: Omer Abdeen
Published: August 2021

A greenhouse is essentially an enclosed structure, which traps the short wavelength solar radiation and stores the long wavelength thermal radiation to create a favourable microclimate for higher productivity. The sun’s radiation incident on the greenhouse has two parts: direct radiation and an associated diffuse sky radiation. The diffuse part is not focused by the lenses and goes right through Frensel lenses onto the surface of the absorbers. This energy is absorbed and transformed into heat, which is then transported via the liquid medium in copper pipes to the water (heat) storage tanks or, if used, open fish tanks. In this way, an optimal temperature for both plant cultivation and fish production can be maintained. Stable plant growth conditions are light, temperature and air humidity. Light for the photosynthesis of plants comes from the diffuse radiation, which is without substantial fluctuations and variation throughout most of the day. The air temperature inside the greenhouse is one of the factors that have an influence on the precocity of production. The selective collector acts in a more perceptible way on extreme air temperatures inside the greenhouse. Hence, the system makes it possible to avoid the excessive deviation of the temperature inside the greenhouse and provides a favourable microclimate for the precocity of the culture. Sediment and some associated water from the sediment traps are used as organic fertiliser for the plant cultivation. The present trend in greenhouse cultivation is to extend the crop production season in order to maximise use of the equipment and increase annual productivity and profitability. However, in many Mediterranean greenhouses, such practices are limited because the improper cooling methods (mainly natural or forced ventilation) used do not provide the desired micro-climatic condition during the summer of a composite climate. Also, some of these greenhouses have been built where the meteorological conditions require some heating during the winter, particularly at night. The worst scenario is during the winter months when relatively large difference in temperature between day and night occurs. However, overheating of the greenhouse during the day is common, even in winter, requiring ventilation of the structure. Hence, several techniques have been proposed for the storage of the solar energy received by the greenhouse during the day and its use to heat the structure at night. Reviews of such techniques are presented in this article. Air or water can be used for heat transport. The circulating water is heated during the day via two processes. The water absorbs part of the infrared radiation of the solar spectrum. Since the water is transparent in the visible region, they do not compete with the plants that need it. Alternatively, the water exchanges heat with the greenhouse air through the walls. At night, if the greenhouse temperature goes down below a specified value, the water begins to circulate acting as heat transfer surfaces heating the air in the greenhouse.
Use of the Frailty Tools Fi Mds and Fi Rockwood to Predict Outcomes of Inpatient Rehabilitation after Proximal Hip Fracture
Authors: Naschitz Jochanan
Published: August 2021

Background Among factors which affect the outcome of rehabilitation after hip fracture, the role of pre-fracture frailty has not been defined. Objective To assess the impact of frailty on rehabilitation outcome in elderly persons with proximal hip fracture. Setting Geriatric rehabilitation center. Design Retrospective observational study. Subjects Forty consecutive patients with proximal hip fracture. Methods The following parameters were calculated: FI-MDS frailty index, Rockwood Clinical Frailty Scale (FI Rockwood), Functional Independence Measure (FIM) on discharge, absolute functional gain (ΔFIM), length of stay (LOS), and FIM gain per day (ΔFIM/LOS). FIM discharge ≥90 and motor FIM discharge >58 indicated success in rehabilitation. Results There were 31 women and 9 men, mean age 80 years. The mean pre-fracture FI MDS was 10 points (SD 5.8) out of 58 possible, the mean FI Rockwood score was 3 (SD 1.7) out of 7 possible. The mean admission FIM was 76.6 (SD 16), the mean discharge FIM was 92.7 (SD 19.3), mean LOS 22.5 days (SD 9.7), mean ΔFIM/LOS 0.8 (SD 0.6). Pre-fracture frailty was associated with worse outcome of rehabilitation: FI MDS predicted discharge FIM ≥90 with OR 0.86, p 0.012; FI Rockwood predicted discharge FIM ≥90 with OR 0.68, p 0.027; FI MDS predicted discharge motor FIM >58 with OR 0.91, p 0.07; FI Rockwood predicted discharge motor FIM >58 with OR 0.71, p 0.027. Conclusions Though pre-fracture frailty correlated with FIM on discharge, neither frailty tool was specific enough to predict success in rehabilitation and the necessary length of rehabilitation. Translating frailty scores in tools adequate for clinical decision making remains an aim for future studies.
Potensi Pemanfaatan Ulang Sampah Plastik Menjadi Eco-Paving Block
Authors: Hasaya Haudi , Masrida Reni
Published: August 2021

Eco-paving block is a product used for construction consisting of sand and plastic mixes. In order to produce eco-paving blocks, the mixture of sand and concrete was substituted in part with sand and plastics. In order to properly mix plastics to create eco-paving blocks, a plastic smelter was used to generate heat and melt the plastic materials. The plastic material types used in this case was PETE or PETE, which has the characteristics of being flexible and high adhesive properties; along with ABS which can stand pressures. Based on the tests conducted with the plastic smelter using PET, ABS, and the combination of PET and ABS, the most promising result was shown with the combination of PET and ABS. This combination required 8 minutes 21 seconds for the plastics to become fully melted, and a temperature of 278oC. The combination of PET and ABS resulted in a mixture of plastics with strong adhesive properties and durability. This product could potentially be developed into eco-paving blocks. Additional studies regarding the optimum dosage combinations of PET and ABS plastics in eco-paving blocks can potentially be established in order to further optimize the usage of these plastics in eco-paving blocks.
OEE, Literature Review Tinjauan Literatur Secara Sistematik Tentang Overall Equipment Effectiveness (OEE) di Industri Manufaktur dan Jasa
Authors: Atikno Welly , Purba Humiras Hardi
Published: August 2021

Overall equipment effectiveness (OEE) is a performance evaluation method used to measure industrial equipment productivity as a key performance indicator. This literature study aims to identify, categorize, and synthesize research related to the application, study and analysis of OEE in various industrial fields. The literature review was carried out systematically, structured and directed manner on 35 journals in Asia in the last eight years. Covering OEE's core characteristics and synergizing the strengths of the improvement framework, this study will provide a systematic guide to OEE practitioners in implementing improvements that can be used to identify areas for future development and as a reference for further research.
Implementasi Metode KPI dalam Industri: Kajian Literatur
Authors: Manurung Hasiholan , Purba Humiras Hardi
Published: August 2021

lndikator kinerja utama (KPI) banyak digunakan dalam sistem perusahaan yang berkembang dan maju. KPI digunakan untuk mengukur parameter dasar yang mencirikan fungsi organisasi. Pengukuran efisiensi produksi terlepas dari pilihan metode optimasi, elemen kunci dari metodologi penulis dalam merancang sistem produksi. Indikator kinerja utama (KPI) biasanya digunakan di industri untuk mendukung pengambilan keputusan dan memprioritaskan pekerjaan di seluruh portofolio. KPI memiliki penilaian yang sangat obyektif terkait dengan rekomendasi keputusan yang harus diambil dalam memajukan organisasi agar dapat mencapai tujuan yang telah digariskan pada bagian sebelumnya dan berhasil menginformasikan. Dalam jurnal review ini tertulis pandangan penggunaan KPI di berbagai bidang industri tidak hanya bersifat besar tetapi juga menilai tingkat kepuasan dalam suatu profesi atau tindakan yang biasa dilakukan dalam organisasi. Dari sini dapat disimpulkan pentingnya penilaian yang sistematis dan obyektif untuk meningkatkan kinerja dan hasil dalam suatu kegiatan.
PELATIHAN SOSIAL MEDIA FOR MARKETING DI DUSUN PENDEM
Authors: Zani Yelly Febrina , Ilmi Nurul
Published: August 2021

Dusun pendem memiliki potensi hasil alam & sumber daya manusia (SDM) yang mumpuni. Adanya hasil alam seperti susu sapi dan jahe dapat dijadikan sebuah produk yang dapat dipasarkan keluar daerah. Sumber daya lainnya seperti adanya paraffin atau bahan dasar dari lilin yang ada di Dusun tersebut juga dapat diproduksi. Selain itu, pengaplikasian lampu LED untuk mainan anak-anak juga akan menambah potensi masyarakat. Beragam sumber daya tersebut dapat di pasarkan tanpa menggunakan biaya. Dengan adanya teknologi yang semakin melaju pesat, tidak menutup kemungkinan untuk memajukan dusun Pendem dengan mengenalkan produk-produknya. Sosial media merupakan trik untuk bisa mengenalkannya. Salah satu situs jejaring sosial yang paling terkenal dan banyak digunakan saat ini adalah Facebook. Facebook adalah situs jejaring sosial yang sedang populer saat ini. Salah satu keunggulan yang dimiliki oleh facebook dan jarang dimiliki oleh situs jejaring sosial lain adalah beragamnya aplikasi yang dapat memanjakan pengguna, baik yang dikembangkan oleh pihak internal maupun eksternal facebook. Sehingga media sosial facebook dapat dimanfaatkan untuk memasarkan segala jenis produk yang ada dan bisa menjadi pendapatan tambahan untuk dusun tersebut.
Penyuluhan Penggolongan dan Pengolahan Sampah di Lingkungan RW 16 Blok E Perum Puri Harapan
Authors: Spalanzani Widya , Yuniawati Ratna Diah
Published: August 2021

Sampah merupakan masalah yang masih belum bisa teratasi dengan baik. Mulai dari pengumpulan, pengolahan, penggolongan dan lainnya. Oleh karena itu, sebagai manusia selalu dituntut untuk sadar diri dan bertanggung jawab atas sampahnya. Salah satu perumahan yang masih banyak masyarakat atau warganya belum mengetahui tentang penggolongan dan pengelolaan sampah yaitu Perum Puri Harapan Blok E RW 6. Terlihat dari adanya saluran pembuangan air yang sangat kotor. Masih terdapat banyak sampah disana. Warganya membuang sembarang dan tidak memperhatikan sampah jenis apa yang dibuang. Padahal jika diperhatikan, sampah itu terdiri dari tiga jenis golongan (organik, anorganik dan Bahan Berbahaya dan Beracun) dengan cara pengelolaan yang berbeda. Jika dibuang sembarang dan tidak dikelola dengan baik maka akan terjadi penumpukan besar-besaran. Sehingga dapat menimbulkan banyak dampak negatif seperti polusi udara, polusi air, bibit penyakit dan banyak lagi.  Penyuluhan ini dilakukan secara deskriptif yaitu membuat penyuluhan atau sosialisasi dengan cara penyampaian fakta-fakta secara sistematis mengenai penggolongan dan pengelolaan sampah. Tujuannya agar menyadarkan masyarakat akan pentingnya penggolongan sampah dan melakukan pembersihan areanya.
Pemberdayaan Santri Kreatif dan Wirausaha melalui Pemanfaatan Limbah Kayu menjadi Kerajinan
Authors: Diah Yuniawati Ratna , Amalia Muti Asri
Published: August 2021

The students in the Al Arghob Hidayatus Salafiyah Islamic Boarding School environment mostly come from a rural environment, which may affect them in terms of knowledge, mindset, and their way of thinking tends to be said to be lacking. This is exacerbated by the level of creativity that is not honed and the mindset of most students who tend to choose quickly to get married after completing their education at Pondok Pesantren, they forget to prepare for their future such as pursuing a career that can be useful to support their household life. One of the programs implemented at the Al-Arghob Hidayatus Salafiyah Islamic Boarding School is the Empowerment of Creative Students and Entrepreneurs through the Utilization of Wood Waste into Crafts. There are several objectives in implementing this program, namely to broaden students' knowledge regarding the potential of wood waste, to create quality, creative and innovative students; and lastly to encourage and motivate students to be enthusiastic in entrepreneurship. The result of this program is that students have a sense of enthusiasm in participating in these activities and help students to be more creative in entrepreneurship.
Pelatihan Penerapan Manajemen Organisasi pada Yayasan Darul Iman Taman Narogong Indah Bekasi
Authors: Saputra Yayan
Published: August 2021

Darul Iman Foundation is one of the community organizations that is oriented towards the development of Islamic da'wah located in the Taman Narogong Indah Bekasi Residence. In managing the objectives of the activities the foundation forms several fields of activity, namely Al Iman Mosque Prosperity Council (DKM), Social and Community Sector, Business and Fund Development Sector, Facilities Development and Development Sector, Development and IT Training Sector. Most of the existing organizational resources are not well integrated and the implementation of management functions cannot be carried out in all lines of the organization. So that the existing work programs that have been implemented so far have not reflected the vision and mission of the foundation. Therefore, it is necessary to hold implementation of organizational management training to provide understanding and encourage good and measurable organizational awareness at the Darul Iman Foundation. Also attended by the Al Iman Mosque Youth Association (IPMI). Pre-test and post-test results in the organization's management deployment training show that further mentoring is needed to the Darul Faith Foundation of Beautiful Narogong Park of Bekasi. Because participants are not yet familiar with the system of implementing integrated, structured, and well-systemed organizational management, given that when training is still in the limit of simulation in solving case studies. So that it requires further direction in the implementation of the overall training material that has been provided.
Analysis of a method for measuring deposit impedance parameters using charge amplifier and lock-in voltmeter
Authors: Wiśniewski Dariusz Robert
Published: August 2021

Parameters such as capacitance and conductivity are measured to describe the properties of a medium, including its moisture content. These methods do not deliver highly accurate results in materials that are characterized by low homogeneity, varied porosity, high conductivity and high water content. This study proposes a more accurate method for estimating the parameters of any medium. In the experimental setup, a charge amplifier and a phase-sensitive voltmeter were applied to determine resistance and capacitance parameters of a medium based on the signals received by the measuring system. The proposed method can be applied to non-homogeneous media containing both dielectric and conductive materials. The described measuring system is composed of two flat electrodes whose size can be adapted to the dimensions of the analyzed medium. A method for processing the sensing signal to determine the impedance characteristics of a medium with the use of a phase-sensitive voltmeter was described. The measuring system was modeled in Matlab/Simulink, and the results were discussed.
Design of a motion system for 3D printed snakebot
Authors: Mateja Krzysztof , Panfil Wawrzyniec
Published: August 2021

This article presents the results of work related to design, analysis and selection of the electric motors, servos and elements of motion system for 3D printed snakebot. Electric motors and servos had to meet a number of requirements like dimensions, torque, RPM. The drivetrain allowed to drive the snakebot and rotate system allowed to torsional movement between adjacent robot modules. CAD model and analysis allowed to select the proper elements of drivetrain and rotate system. We built test stands and after verification we built the prototype. Next step after building the robot was to carry out tests to verify the mobility of the snake robot. We checked, among others, movement of servos in different planes, snakebot speed, driving at angle (up and down).
Carrot irrigation: problems and prospects
Authors:   Russian Scientific Research Institute of Land Improvement Problems, Babichev A. N. , Gurina I. V. ,   Russian Scientific Research Institute of Land Improvement Problems
Published: August 2021

Purpose: to study modern approaches to the determination of irrigation regimes and water consumption for carrots during sprinkler irrigation. Discussion. Carrot is a vegetable crop in demand in the modern food market. In Russia, no more than 1–1.5 million tons of carrot root crops are currently cultivated, which covers the country's needs only by 70–80 %. The rest is replenished through imports. Under modern conditions, the increase of the vegetable crops yield, including carrots, is impossible without irrigation. Numerous studies confirm that, along with biological characteristics, climatic and other factors, irrigation affects the carrot yield, significantly increasing it in comparison with rainfed. The analysis of the recent research made it possible to note that the most common method of carrot crops watering is sprinkling. However, this requires significant volumes of irrigation water, and therefore, water-saving irrigation modes are in demand under modern conditions. It is known that the optimal soil water regime on carrot crops is formed when the moisture content is maintained at least 75–80 % HB. The critical period for moisture provision is from the carrots sowing to the appearance of their shoots, as well as the periods of the greatest frondescence and intensive root formation. Conclusions. Water regime management is achieved by irrigation differentiation by the plant growth and development phases, soil moisture regimes, as well as the depth of the wetted layer. The use of this methodological approach helps to reduce the total water consumption, to increase the efficiency of moisture use by crops. Using computational approaches to determine the elements of water balance, which make it possible to control the water regime of carrot crops is promising.
Analysis of water scarcity and the use of reclaimed land in the Southern Federal District
Authors:   Russian Scientific Research Institute of Land Improvement Problems, Kuzmitchev A. А. , Ryzhakov A. N. ,   Russian Scientific Research Institute of Land Improvement Problems, Martynov D. V. ,   Russian Scientific Research Institute of Land Improvement Problems
Published: August 2021

Purpose: to analyze water resources scarcity, information on the availability of reclaimed lands and their actual use. Materials and methods: the analysis of the use and distribution of water resources was carried out on the basis of actual data obtained for the period 2016–2020 on land reclamation departments of the Southern Federal District (SFD). The change in the area of actually watered lands and data on the planned and actual water withdrawal in general and for irrigation needs were assessed in comparison with the data for the previous 5 years. Results: the natural shortage of river flow led to a low reservoirs storage and a decrease in the limits of water withdrawal from water sources. The smallest water deficit was observed in 2020 in the river Volga basin (13.4 %), and the largest one – in the main reservoirs of the rivers Don and Kuban (82.6 and 100 %, respectively). The largest total water intake is observed in Kubanmeliovodkhoz and Rostovmeliovodkhoz (Kuban and Rostov Reclamation Water Sector Departments). Their total volume is 4,720.08 million cubic meters, or 74 % of the total withdrawal for all departments of the Southern Federal District (52 and 22 %, respectively). The largest volume of water for irrigation (2.3 and 0.72 cubic km), among the subjects of the Southern Federal District and the largest number of irrigated areas (154.6 and 49.8 thousand hectares) are concentrated in these regions as well. However, the most favorable situation for irrigation has developed in Volgograd Meliovodkhoz (Reclamation Water Sector) Department (the volume of water for irrigation increased by 17 %, irrigated areas – by 12 %) and Adygeya meliovodkhoz (Reclamation Water Sector) Department (the volume of water for irrigation increased by 5 %, and irrigated areas by 36 %). And the most tense situation is in Rostov region. Conclusions: despite the prevailing natural and climatic conditions in spring – summer 2020, which were characterized by high average daily temperatures and lack of precipitation for four months or more, all obligations for irrigation water supply were met in full.