bluuebunny/crossref_metadata_2025_split huggingface dataset:
Aptitud combinatoria general y específica de maíces normales y de alta calidad de proteína
Authors: Manjarrez Salgado Margarito , Palemón Alberto Francisco , Gómez Montiel Noel Orlando , Espinosa Calderón Alejandro , Rodríguez Herrera Sergio A. , Damián Nava Agustín , Hernández Castro Elías , Cruz Lagunas Blas 
Published: February 2018

Los caracteres agronómicos y sus componentes genéticos son indicadores de la calidad de semillas; además, son factores importantes para estudiar las características del germoplasma en un programa de mejoramiento. Se analizaron los efectos de aptitud combinatoria general (ACG) y específica (ACE) y el tipo de acción génica de caracteres agronómicos de la semilla de maíz (Zea mays L.) normal y de alta calidad de proteína. El material genético consistió de 10 líneas endogámicas de maíz: cuatro de grano normal y seis de alta calidad de proteína. Se analizaron las variables: días a floración masculina y femenina, altura de planta y mazorca, calificación de planta y mazorca, y rendimiento de grano. Los resultados mostraron variación significativa entre genotipos (p≤ 0.01) en los efectos de ACG y ACE para todas las variables agronómicas. Se identificaron líneas como: T-44, B-41, LT-155, T-45 y CML-144 C, con valores mayores de ACG, siendo 0.6379, 0.4592, 0.3286, 0.2945 y 0.3382 t ha-1, respectivamente, para rendimiento de grano. Además, se identificaron materiales sobresalientes con base a su ACE las cruzas 4 * 8 (B-41 * CML-144), 1 * 5 (T-45 * CLQ-6203), y 2 * 7 (T-44 * CML-142), con valores estimados de ACE para rendimiento de grano de 1.0875, 0.9544 y 0.7591 t ha-1, respectivamente. El tipo de acción génica aditiva fue la que predominó en los caracteres agronómicos.
PENGARUH ASIMILASI DATA PENGINDERAAN JAUH (RADAR DAN SATELIT) PADA PREDIKSI CUACA NUMERIK UNTUK ESTIMASI CURAH HUJAN (IMPACT OF REMOTE SENSING DATA ASSIMILATION (RADAR AND SATELLITE) ON NUMERICAL WEATHER PREDICTION FOR RAINFALL ESTIMATION)
Authors: Paski Jaka A. I. 
Published: February 2018

One of the main problems in numerical weather modeling was the inaccuracy of initial condition data (initial conditions). This study reinforced the influence of assimilation of remote sensing observation data on initial conditions for predictive numerical rainfall in BMKG radar area Tangerang (Province of Banten and DKI Jakarta) on January 24, 2016. The procedure applied to rainfall forecast was the Weather Research and Forecasting model (WRF) with a down-to-down multi-nesting technique from Global Forecast System (GFS) output, the model was assimilated to radar and satellite image observation data using WRF Data Assimilation (WRFDA) 3DVAR system. Data was used as preliminary data from surface observation data, EEC C-Band radar data, AMSU-A satellite sensor data and MHS sensors. The analysis was done qualitatively by looking at the measurement scale. Observation data was used to know rainfall data. The results of the study showed that producing rainfall predictions with different assimilation of data produced different predictions. In general, there were improvements in the rainfall predictions with assimilation of satellite data was showing the best results. Abstrak Salah satu masalah utama pada pemodelan cuaca numerik adalah ketidak-akuratan data kondisi awal (initial condition). Penelitian ini menguji pengaruh asimilasi data observasi penginderaan jauh pada kondisi awal untuk prediksi numerik curah hujan di wilayah cakupan radar cuaca BMKG Tangerang (Provinsi Banten dan DKI Jakarta) pada 24 Januari 2016. Prosedur yang diterapkan pada prakiraan curah hujan adalah model Weather Research and Forecasting (WRF) dengan teknik multi-nesting yang di-downscale dari keluaran Global Forecast System (GFS), model ini diasimilasikan dengan data hasil observasi citra radar dan satelit menggunakan WRF Data Assimilation (WRFDA) sistem 3DVAR. Data yang digunakan sebagai kondisi awal berasal dari data observasi permukaan, data C-Band radar EEC, data satelit sensor AMSU-A dan sensor MHS. Analisis dilakukan secara kualitatif dengan melihat nilai prediksi spasial distribusi hujan terhadap data observasi GSMaP serta metode bias curah hujan antara model dan observasi digunakan untuk mengevaluasi pengaruh data asimilasi untuk prediksi curah hujan. Hasil penelitian yang diperoleh menunjukkan prediksi curah hujan dengan asimilasi data yang berbeda menghasilkan prediksi yang juga berbeda. Secara umum, asimilasi data penginderaan jauh memberikan perbaikan hasil prediksi estimasi curah hujan di mana asimilasi menggunakan data satelit menunjukan hasil yang paling baik.
PENERAPAN ALGORITMA SPECTRAL ANGLE MAPPER (SAM) UNTUK KLASIFIKASI LAMUN MENGGUNAKAN CITRA SATELIT WORLDVIEW-2
Authors: Aziizah Nunung Noer , Siregar Vincentius Paulus , Agus Syamsul Bahri 
Published: February 2018

Remote sensing technology has been developed for monitoring and identification of coastal environment and resources, such as seagrasses. In Indonesia, particularly seagrass mapping spectrometer utilizing spectral library has not been done. This study aimed to determine the spectral signature based in situ measurement and image analysis, analyze the implementation of the algorithm Spectral Angle Mapper (SAM) and test accuracy in mapping seagrass to species level based on spectral libraries. Research conducted in seagrass Tunda Island, Banten. Satellite imagery used is WorldView-2 and the seagrass spectral reflectance was measured using a spectrometer USB4000. SAM classification algorithm utilizing spectral libraries and classify objects in a single pixel can be homogeneous. Classification results in the form of class Enhalus acoroides, Cymodocea rotundata, Thalassia hemprichii, and Halophila ovalis. The resulting accuracy of 35.6%. The area of each class is 0.8 hectares for the class Cymodocea rotundata, 2.79 hectares for Enhalus acoroides, class Thalassia hemprichii 3.7 hectares, and 3.5 hectares for Halophila ovalis. Classification of seagrass to species level yet produce good accuracy. Seagrass area with a variety of species and number of channels on a multispectral satellite image is assumed to be the cause of the low value of accuracy. AbstrakPemanfaatan teknologi satelit penginderaan jauh (remote sensing) sangat berkembang untuk identifikasi dan memantau sumberdaya alam wilayah pesisir, seperti lamun. Di Indonesia khususnya pemetaan lamun memanfaatkan pustaka spektral dari spektrometer belum banyak dilakukan. Penelitian ini bertujuan untuk mengetahui besaran spektral lamun berdasarkan pengukuran in situ dan analisis citra satelit, memetakan lamun hingga tingkat spesies berdasarkan pustaka spektral pengukuran in situ dengan penerapan algoritma SAM dan menguji tingkat akurasinya. Penelitian dilaksanakan di ekosistem lamun Pulau Tunda, Banten. Citra satelit yang digunakan adalah WorldView-2 dan reflektansi spektral lamun diukur menggunakan spektrometer USB4000. Algoritma klasifikasi SAM memanfaatkan pustaka spektral dan mengkelaskan obyek dalam satu piksel secara homogen. Hasil klasifikasi berupa kelas lamun Enhalus acoroides, Cymodocea rotundata, Thalassia Hemprichi, dan Halophila ovalis. Akurasi yang dihasilkan sebesar 35.6 %. Luas area masing-masing kelas adalah 0.8 Ha untuk kelas Cymodocea rotundata, 2.79 Ha untuk kelas Enhalus acoroides, 3,7 Ha kelas Thalassia hemprichii, dan 3.5 Ha untuk Halophila ovalis. Klasifikasi lamun hingga tingkat spesies belum menghasilkan akurasi yang baik. Area lamun dengan jenis yang beragam dan jumlah saluran pada citra satelit multispektral diasumsikan menjadi penyebab rendahnya nilai akurasi.
MODEL PELAKSANAAN DISEMINASI INFORMASI PENGINDERAAN JAUH BERBASIS TEKNOLOGI TERBUKA
Authors: Sarno . 
Published: February 2018

National Earth Observation System at the Remote Sensing Application Center organize the functions of remote sensing information dissemination to the user. Space Law Number 21 of 2013 Article 22, Paragraph 1, mandates that the use of data and dissemination of remote sensing information shall be based on the guidelines set by the Institution. This research aims to analyze reference implementation of remote sensing information dissemination. The method used in this study is prototyping with an open technology. Stages of research include the identification of technology components and evaluation of the general architecture to simplify the development, design models and implementation of the system by reforming, repeatedly testing and integration of open source software. The results showed that the model or reference implementation has been successfully implemented and tested through prototypes. Application of the prototype into a fully operational system can be developed at low cost and user friendly interface. Abstrak Sistem Pemantauan Bumi Nasional di Pusat Pemanfaatan Penginderaan Jauh menyelenggarakan fungsi diseminasi informasi penginderaan jauh untuk pengguna. Undang-undang Keantariksaan Nomor 21 Tahun 2013 Pasal 22 Ayat 1, mengamanatkan bahwa pemanfaatan data dan diseminasi informasi penginderaan jauh wajib dilakukan berdasarkan pedoman yang ditetapkan oleh Lembaga. Penelitian ini bertujuan untuk menganalisis model pelaksanaan diseminasi informasi penginderaan jauh. Metode yang digunakan dalam penelitian ini adalah purwarupa dengan teknologi terbuka. Tahapan penelitian meliputi identifikasi komponen teknologi dan evaluasi arsitektur umum untuk mempermudah dalam pengembangan, perancangan model dan implementasi sistem dengan melakukan pembaruan, pengujian secara berulang dan pengintegrasian perangkat lunak sumber terbuka. Hasil penelitian menunjukkan bahwa model telah berhasil diimplementasikan dan dilakukan pengujian melalui purwarupa. Penerapan purwarupa menjadi sistem yang beroperasi secara penuh dapat dikembangkan dengan biaya murah dan antarmuka yang ramah.
Kebersyukuran dan Kebermaknaan Hidup pada Penderita Jantung Koroner
Authors: Maulidah Izanatul Laily 
Published: February 2018

Penelitian ini bertujuan untuk mengetahui hubungan kebersyukuran dan kebermaknaan hidup pada penderita jantung koroner di Poliklinik Penyakit Dalam RSUD Hj. Anna Lasmanah Banjarnegara. Jumlah partisipan dalam penelitian ini yaitu 65 pasien.Alat pengumpulan data menggunakan skala kebersyukuran dan skala kebermaknaan hidup. Dari uji validitas, diperoleh koefisien validitas skala kebersyukuran bergerak dari 0,252 sampai 0,508 dengan rtabel = 0,244, sementara validitas skala kebermaknaan hidup bergerak dari 0,322 sampai 0,496 dengan rtabel = 0,244. Hasil uji reliabilitas skala kebersyukuran diperoleh nilai sebesar 0,879 dan skala kebermaknaan hidup sebesar 0,890.Analisis data dalam penelitian ini menggunakan teknik analisis regresi linier sederhana. Hasil uji hipotesis menunjukkan rhitung sebesar 0,726 dan rtabel 0,244 p sebesar 0,000 dengan taraf kepercayaan 99% (α = 0,01), hal ini menunjukkan bahwa rhitung>rtabel (0,726>0,244) maka arah hubungan adalah positif. Dimana semakin tinggi kebersyukuran maka semakin tinggi kebermaknaan hidupnya, begitu juga sebaliknya jika semakin rendah kebersyukuran maka akan semakin rendah pula kebermaknaan hidupnya. Sumbangan efektif variabel kebersyukuran adalah sebesar 52,7% terhadap kebermaknaan hidup, sementara 47,3% merupakan sumbangan efektif dari faktor lain yang tidak diteliti. Kata Kunci : Kebersyukuran, Kebermaknaan Hidup, Penderita Jantung Koroner
Reduced Gray Matter Volume of the Thalamus and Hippocampal Region in Elderly Healthy Adults with no Impact of APOE ɛ4: A Longitudinal Voxel-Based Morphometry Study
Authors: Squarzoni Paula , Duran Fabio Luis Souza , Busatto Geraldo F. , Alves Tania Correa Toledo de Ferraz 
Published: February 2018

Background: Many cross-sectional voxel-based morphometry (VBM) investigations have shown significant inverse correlations between chronological age and gray matter (GM) volume in several brain regions in healthy humans. However, few VBM studies have documented GM decrements in the healthy elderly with repeated MRI measurements obtained in the same subjects. Also, the extent to which the APOE ɛ4 allele influences longitudinal findings of GM reduction in the healthy elderly is unclear. Objective: Verify whether regional GM changes are associated with significant decrements in cognitive performance taking in account the presence of the APOE ɛ4 allele. Methods: Using structural MRI datasets acquired in 55 cognitively intact elderly subjects at two time-points separated by approximately three years, we searched for voxels showing significant GM reductions taking into account differences in APOE genotype. Results: We found global GM reductions as well as regional GM decrements in the right thalamus and left parahippocampal gyrus ( p < 0.05, family-wise error corrected for multiple comparisons over the whole brain). These findings were not affected by APOE ɛ4. Conclusions: Irrespective of APOE ɛ4, longitudinal VBM analyses show that the hippocampal region and thalamus are critical sites where GM shrinkage is greater than the degree of global volume reduction in healthy elderly subjects.
Interactions between Atrial Fibrillation, Cardiovascular Risk Factors, and ApoE Genotype in Promoting Cognitive Decline in Patients with Alzheimer’s Disease: A Prospective Cohort Study
Authors: Falsetti Lorenzo , Viticchi Giovanna , Buratti Laura , Grigioni Francesco , Capucci Alessandro , Silvestrini Mauro 
Published: February 2018

Background: An association between non-valvular atrial fibrillation (NVAF) and cognitive impairment has been hypothesized. Objective: We sought to evaluate whether and how permanent NVAF (pNVAF) is associated with progression of cognitive impairment in patients with Alzheimer’s disease (AD) in the presence of vascular or genetic risk factors. Methods: 310 consecutive patients affected by mild-moderate AD were included and followed for a 24-month period. At the end of the follow-up, based on the results of the neuropsychological evaluation patients were classified as stable or deteriorated to severe AD. Clinical history, therapy, time in therapeutic range for anticoagulation, Framingham cardiovascular risk profile (FCRP), CHA2DS2-VASc score, Mini-Mental State Examination (MMSE), ApoE genotype, brain CT-scan, carotid ultrasound, and ECG were collected. Binary logistic and path analysis were adopted to assess relationships between pNVAF, ApoE, and cognitive outcome. Results: Despite anticoagulant therapy, pNVAF was associated with lower entry MMSE, higher mean intima-media thickness (mIMT) and higher FCRP. Among patients carrying ApoE ɛ4 allele and affected by pNVAF, the lowest MMSE (14.90±7.62) and the highest mIMT (1.16±0.17 mm) and FCRP (26.24±3.96) values were detected. In this group, the risk of cognitive deterioration reached the highest probability. pNVAF was associated with an increased cognitive deterioration in subjects with high FCRP, CHA2DS2-VASc, or mIMT. Conclusions: pNVAF seems to identify AD patients with a significant atherosclerotic burden and reduced cognitive performances. The interaction between pNVAF and ApoE ɛ4 genotype, especially with aggregated risk factors and an advanced stage of vascular damage is associated with higher risk of fast cognitive deterioration.
Visit-To-Visit Blood Pressure Variability and the Risk of Dementia in Older People
Authors: van Middelaar Tessa , van Dalen Jan W. , van Gool Willem A. , van den Born Bert-Jan H. , van Vught Lonneke A. , Moll van Charante Eric P. , Richard Edo 
Published: February 2018

Background: High visit-to-visit variability (VVV) in blood pressure (BP) is associated with cerebrovascular lesions on neuroimaging. Objective: Our primary objective was to investigate whether VVV is associated with incident all-cause dementia. As a secondary objective, we studied the association of VVV with cognitive decline and cardiovascular disease (CVD). Methods: We included community-dwelling people (age 70–78 year) from the ‘Prevention of Dementia by Intensive Vascular Care’ (preDIVA) trial with three to five 2-yearly BP measurements during 6–8 years follow-up. VVV was defined using coefficient of variation (CV; SD/mean×100). Cognitive decline was assessed using the Mini-Mental State Examination (MMSE). Incident CVD was defined as myocardial infarction or stroke. We used a Cox proportional hazard regression and mixed-effects model adjusted for sociodemographic factors and cardiovascular risk factors. Results: In 2,305 participants (aged 74.2±2.5), mean systolic BP over all available visits was 150.1 mmHg (SD 13.6), yielding a CV of 9.0. After 6.4 years (SD 0.8) follow-up, 110 (4.8%) participants developed dementia and 140 (6.1%) CVD. Higher VVV was not associated with increased risk of dementia (hazard ratio [HR] 1.00 per point CV increase; 95% confidence interval [CI] 0.96–1.05), although the highest quartile of VVV was associated with stronger decline in MMSE ( β –0.09, 95% CI –0.17 to –0.01). Higher VVV was associated with incident CVD (HR 1.07; 95% CI 1.04–1.11). Conclusion: In our study among older people, high VVV is not associated with incident all-cause dementia. It is associated with decline in MMSE and incident CVD.
Homocysteine and Cerebral Atrophy: The Epidemiology of Dementia in Singapore Study
Authors: Tan Bryce , Venketasubramanian Narayanaswamy , Vrooman Henri , Cheng Ching-Yu , Wong Tien Yin , Ikram Mohammad Kamran , Chen Christopher , Hilal Saima 
Published: February 2018

Background: Plasma homocysteine levels are increasingly studied as a potential risk factor for dementia. Elevated homocysteine levels have been linked with gray and white matter volume reduction among individuals with mild cognitive impairment and Alzheimer’s disease. However, the effects of homocysteine on brain changes in preclinical stages of dementia remain unexplored. Objective: To examine the association of elevated homocysteine levels with markers of neurodegeneration, i.e., white and gray matter volume in an elderly population. Methods: The study included 768 participants (mean age: 69.6±6.5 years, 51.3% women) from the Epidemiology of Dementia In Singapore study. Participants underwent a brain MRI scan and blood tests. Serum homocysteine was measured using competitive immunoassay. Cortical thickness and subcortical structural volume were quantified using FreeSurfer whereas white matter volume was quantified using a previous validated method. Results: Higher homocysteine levels were significantly associated with decreased global white matter volume [mean difference ( β) in volume (ml) per micromole per liter ( μmol/l) increase in homocysteine levels: – 0.555, 95% Confidence Interval (CI): – 0.873; – 0.237], decreased parietal cortical thickness [ β in thickness ( μm) per μmol/l increase in homocysteine levels:– 1.429, 95% CI: – 2.781; – 0.077], and smaller volumes of the thalamus [ β: – 0.017, 95% CI: – 0.026; – 0.008], brainstem [ β: – 0.037, 95% CI: – 0.058; – 0.016], and accumbens [ β: – 0.004, 95% CI: – 0.006; – 0.002]. Conclusion: Higher homocysteine levels were associated with cerebral atrophy. Further studies are required to assess whether lowering plasma homocysteine levels may prevent neurodegenerative changes or delay progression of clinical symptoms before the development of dementia.
The Role of Verb Fluency in the Detection of Early Cognitive Impairment in Alzheimer’s Disease
Authors: Alegret Montserrat , Peretó Mar , Pérez Alba , Valero Sergi , Espinosa Ana , Ortega Gemma , Hernández Isabel , Mauleón Ana , Rosende-Roca Maitée , Vargas Liliana , Rodríguez-Gómez Octavio , Abdelnour Carla , Berthier Marcelo L. , Bak Thomas H. , Ruíz Agustín , Tárraga Lluís , Boada Mercè 
Published: February 2018

Background: Verb fluency (VF) is the less commonly used fluency test, despite several studies suggesting its potential as a neuropsychological assessment tool. Objective: To investigate the presence of VF deficits in mild cognitive impairment (MCI) and mild Alzheimer’s disease (AD) dementia; to assess the usefulness of VF in the detection of cognitively healthy (CH) people who will convert to MCI, and from MCI to dementia; and to establish the VF cut-offs useful in the cognitive assessment of Spanish population. Methods: 568 CH, 885 MCI, and 367 mild AD dementia individuals were administered the VF test and a complete neuropsychological battery. Longitudinal analyses were performed in 231 CH and 667 MCI subjects to search for VF predictors of diagnosis conversion. Results: A worsening on VF performance from CH, MCI to AD dementia groups was found. Lower performances on VF were significantly related to conversion from CH to MCI/MCI to dementia. When the effect of time to conversion was analyzed, a significant effect of VF was found on the faster conversion from CH to MCI, but not from MCI to dementia. Moreover, VF cut-off scores and sensitivity/specificity values were calculated for 6 conditions (3 age ranges by 2 educational levels). Conclusion: The VF test may be a useful tool for the differential diagnosis of cognitive failure in the elderly. Since VF deficits seem to take place in early stages of the disease, it is a suitable neuropsychological tool for the detection not only of CH people who will convert to MCI, but also from MCI to dementia.
Designing an Internet-Based Multidomain Intervention for the Prevention of Cardiovascular Disease and Cognitive Impairment in Older Adults: The HATICE Trial
Authors: Barbera Mariagnese , Mangialasche Francesca , Jongstra Susan , Guillemont Juliette , Ngandu Tiia , Beishuizen Cathrien , Coley Nicola , Brayne Carol , Andrieu Sandrine , Richard Edo , Soininen Hilkka , Kivipelto Miia ,   for the HATICE study group
Published: February 2018

Background: Many dementia and cardiovascular disease (CVD) cases in older adults are attributable to modifiable vascular and lifestyle-related risk factors, providing opportunities for prevention. In the Healthy Aging Through Internet Counselling in the Elderly (HATICE) randomized controlled trial, an internet-based multidomain intervention is being tested to improve the cardiovascular risk (CVR) profile of older adults. Objective: To design a multidomain intervention to improve CVR, based on the guidelines for CVR management, and administered through a coach-supported, interactive, platform to over 2500 community-dwellers aged 65+ in three European countries. Methods: A comparative analysis of national and European guidelines for primary and secondary CVD prevention was performed. Results were used to define the content of the intervention. Results: The intervention design focused on promoting awareness and self-management of hypertension, dyslipidemia, diabetes mellitus, and overweight, and supporting smoking cessation, physical activity, and healthy diet. Overall, available guidelines lacked specific recommendations for CVR management in older adults. The comparative analysis of the guidelines showed general consistency for lifestyle-related recommendations. Key differences, identified mostly in methods used to assess the overall CVR, did not hamper the intervention design. Minor country-specific adaptations were implemented to maximize the intervention feasibility in each country. Conclusion: Despite differences in CVR management within the countries considered, it was possible to design and implement the HATICE multidomain intervention. The study can help define preventative strategies for dementia and CVD that are applicable internationally.