bluuebunny/crossref_metadata_2025_split huggingface dataset:
An analysis of a priori and empirical solar radiation pressure models for GPS satellites
Authors: Chang Xiao , Männel Benjamin , Schuh Harald 
Published: May 2021

Abstract. Among the different non-conservative forces acting on GPS satellites, solar radiation pressure (SRP) has the greatest influence and inappropriate modeling of it can introduce an acceleration with the order of 1 × 10−7 m s−2. There are a variety of empirical, analytical, and hybrid empirical-physical models to describe the SRP effect. Among them, the empirical model developed at the Center for Orbit Determination in Europe (CODE) and analytical models based on a box-wing prototype, namely box-shape bus with solar panels, are widely used in the International GNSS Service (IGS) community. To investigate the effects of different a priori SRP models on top of empirical parameterization, two sets of parameters based on the Empirical CODE Orbit Model (ECOM) and two a priori models including the analytical box-wing model and the empirical GPS Solar Pressure Model (GSPM) are tested for the different GPS satellites. Orbit comparison of different SRP scenarios shows that: (1) the two parameterizations of ECOM perform differently for Block IIA and IIR/IIR-M satellites but lead to fewer differences for Block IIF satellites in terms of orbit difference pattern. The 3D RMS of orbit difference of two parameterizations are 25, 30 and 21 mm for each block type. (2) Adoption of a priori model or change of the ECOM parameterization mainly lead to orbit differences varying with both elevation of the Sun w.r.t. the orbit plane and the satellites' argument of latitude w.r.t. the noon point, which is supposed to be related to the special geometry and attitude of every block type. These differences are especially obvious in radial direction. Analysis of estimated parameters of ECOM indicates that (3) the GSPM.04 performs better than box-wing model to describe the main constant solar radiation. It is found (4) that the asymmetry of estimated ECOM parameters in B direction (i.e., the direction completing the orthogonal system with D direction and satellite's solar panel axes), observed for three Block IIR satellites, causes corresponding asymmetrical orbit differences in radial direction when reduced ECOM parameters are used. This does not apply to the extended ECOM parameterization tested in this study, which indicates the insufficiency of reduced ECOM to parameterize asymmetrical satellites.
Acetochlor degradation by a mixed culture of P. fluorescens KT3 and B. subtilis 2M6E immobilized in alginate
Authors: Ha Danh Duc , Nguyen Thi Oanh , Ha Huynh Hong Vu 
Published: May 2021

In this study, the acetochlor degradation by two microbial isolates, P. fluorescens KT3 and B. subtilis 2M6E, was determined. The immobilization of the bacterial mixture in alginate beads resulted in higher degradation rates compared to their free cells. The addition of glycerol as a cryoprotectant reducing adverse effects in long-term storage. After storing at 4oC for three months, the cell survivals of free cell with and without the cryoprotectant were 43.0 ± 6.1% and 57.3 ± 5.9%, while data for immobilized bacteria were 64.0 ± 5.3% and 77.6 ± 4.0%, respectively. These results prove that the immobilization of bacteria in alginate and the addition of glycerol can be applied for storing bacteria in a long-term period.
ASSESSING ANALYTICS MATURITY LEVEL IN THE INDONESIAN TAX ADMINISTRATION: THE CASE OF COMPLIANCE RISK MANAGEMENT
Authors: Prastuti Gitarani , Lasmin  
Published: May 2021

Using Grossman (2018)’s Analytic Process Maturity Model (APMM) Framework, we examine the maturity level of advanced analytics development related to taxpayer compliance management in the Indonesian Tax Administration, Directorate General of Taxes (DGT). The framework helps to indicate room for improvement within revenue bodies to allow the organisation to become more analytics-driven in dealing with the COVID-19 crisis and in the future.
The results suggest that the organisation has reached a maturity level of 4.43 and capable of applying from enterprise-wide data analytics. To establish an analytics-driven organisation, remedial works are required to upgrade the current maturity level. Revenue authorities that have similarities in the economic background, compliance structure, and maturity level could acquire valuable lessons from Indonesia’s experience that could be considered in the further development of advanced analytics within taxpayer compliance management.
Een kijkje achter de schermen: een kwalitatieve studie over het ontstaan van cybercriminele carrières
Authors: Matthijsse Sifra , van der Wagen Wytske , van ’t Zand Elina , Fischer Tamar 
Published: May 2021

A look behind-the-screens: a qualitative study on the initiation of cybercriminal careers
This qualitative study examines how criminal careers in cybercrime start and can be explained. Based on offender and expert interviews, the authors conclude that traditional factors linked with the initiation, such as a maturity gap (for juvenile offenders) and opportunism (for adult offenders), in combination with different types of (online) disinhibition – social, technical, situational and psychological – can explain the start of a criminal career. Features of the digital context appear to play a major role in the development of a criminal career and this requires more online supervision and education about – among other things – legal alternatives and the risks and boundaries of the online environment.
Dynamic Performance of Sailing Cruiser by Full-Scale Sea Tests
Authors: Masuyama Yutaka , Nakamura lchiro , Tatano Hisayoshi , Takagi Ken 
Published: May 2021

The sailing performance of a 10.6m-LOA cruiser was evaluated by sea test and the results were compared with calculated values and numerical simulations. The sea test was carried out to examine the steady sailing performance as well as the dynamic performance which includes the motion in waves and tacking maneuverability of the boat. The sailing state parameters at the steady condition were compared with the results of the velocity prediction program, and the results were in good agreement.
The motion of the boat in waves was assessed in conjunction with wave measurements using a throw-in type wave meter. These data were analyzed by means of spectral analysis. The results indicated the sail damping effect on the rolling motion quantitatively. The tacking motion of the boat was also investigated. The trajectory of the boat was measured using differential GPS receivers, and these results were compared with the numerical simulation. The simulation showed good agreement with the sea test data.
The Partnership for America's Cup Technology: An Overview
Authors: Gretzky James A. , Marshall John K. 
Published: May 2021

A discussion is presented on the organization and operation of the Partnership for America's Cup Technology (PACT). Founded in February 1990 when individual American syndicates were unable to fund productive research and design programs, PACT's mission was to help the U.S. America's Cup Defense overcome the technical lead held by several foreign challengers in the new International America's Cup Class (IACC). PACT was to conduct cooperative technology development projects relevant to IACC yacht design to support all U.S. syndicates competing to defend the America's Cup.
PACT had four major programs: gathering site specific environmental data; testing parametric series of hulls or appendages with associated improvements in testing methods; developing Computational Fluid Dynamics tools benchmarked by suitable experiments; developing and maintaining VPP centered design evaluation software.
Since PACT was not involved in design itself, American syndicates maintained their own proprietary high level design programs. In areas where syndicates did not have comparable research programs, PACTs work was integrated into the syndicate design process and often played a role in their final designs. When PACT programs overlapped existing syndicate research, PACT provided a valuable second opinion.
Planning and conducting PACT research was a team effort involving syndicate representatives and independent researchers. Regularly scheduled meetings and formal reports were used to distribute information to the American Syndicates.
Entrepreneurship Development of Rural Women through Value Added Dairy Products
Authors: Dahiya Rajesh , Rani Santosh , Kaushik Sushma 
Published: May 2021

The most important trend of development in agriculture is increasing diversification of rural economy. Contribution of agriculture sector to total GDP of state is 26 Percent. Whereas livestock sector is contributing around 38 percent of Agriculture GDP (at current prices). Today dairy enterprise is practiced by 70 million rural households in India. Milk products generate cash income to farmers almost on daily basis, unlike other crops. Clean milk production by adopting the appropriate practices is urgent need to boost dairy industry and to meet obligations under Food Safety and standard Act, 2006. In Haryana, livestock production is more of women oriented, so their production potential can be enhanced through technical know how and support. Keeping in mind the contribution of women, the present study was undertaken in Hisar district of Haryana. 50 rural women of self help groups of Mangali and Muklan Villages (25 each) were selected purposively who were member of self help group from last one year, having need and interest in dairy farming and having at least two milch animals. A well planned five days training at CCSHAU Hisar, visit to dairy co-operatives, kit of mineral mixture and literature was provided to the participants. Knowledge gap reduction was found highest for paneer preparation 87.81 percent. For all three components, training effectiveness index ranged between 74.28% to 94.66% which shows that trainees perceived the intervention very useful and well covered. Overall training effectiveness index was 80.94 %. Highest perceived feasibility Index was found for Cultural compatibility (97.33%), followed by Physical compatibility practicability (93.33), Low initial cost (90.66%), Trial ability (88.00%) and Visibility of results (86.66%). Lowest perceived feasibility index was found for Cognitive simplicity 54.66 percent.
Alleviation of Salt-Induced Adverse Effects on Gas Exchange, Photosynthetic Pigments Content and Chloroplast Ultrastructure in Gerbera Jamesonii L. by Exogenous Salicylic Acid Application
Authors: Kumara Kapila , Ampitiyawatta A. D. , Padmaperuma Adithya , Beneragama Chalinda , Ping Xia Yi 
Published: May 2021

Aims: The effects of exogenously applied salicylic acid (SA) on gas exchange characteristics, photosynthetic pigments and chloroplast ultrastructure were investigated in gerbera at their reproductive stage under salt-stressed conditions.
Methodology: A pot experiment was conducted under glasshouse conditions at the Zhejiang University, Hangzhou, China, (30° N/120° E) between February 2008 and March 2009.Plants, pretreated with foliar applications of 0, 0.5, and 1.0 mmoldm-3 SA at the onset of flower initiation were irrigated with 100 mmoldm-3NaCl(aq) for two weeks, starting after three days from the SA pretreatment. Control did not receive either NaCl or SA.Photosynthetic rate, gas exchange, photosynthetic pigments content and chloroplast ultrastructure were investigated against treatments. All data were subjected to analysis of variance (ANOVA) and Generalized Linear Model (GLM) using SAS statistical software. Pearson’s correlation test was carried out to study the relationships among the parameters. The means were compared using Duncan’s multiple range test (DMRT). For all the tests, P< .05 was considered statistically significant.
Results: Salt stress adversely affected the gas exchange characteristics, photosynthetic pigment contents and chloroplast ultrastructure. SA application significantly increased the net photosynthesis, stomatal conductivity, intra-cellular CO2 content and transpiration rate but decreased the stomatal limitation, compared to those of untreated salt-stressed plants. Further, the enhanced photosynthetic pigment contents and notably undamaged chloroplast ultrastructure were evident of the ameliorative effects of SA on photosynthetic system under salt stress. Of the two concentrations tested, 0.5 mmoldm-3 SA concentration seemed to have greater effect throughout the experiment showing no significant variation from control in some attributes (chlorophyll contents and chloroplast ultrastructure).
Conclusion: Responses of plants pretreated with SA spraying and significant correlation among them plausibly suggest SA-induced enhancement of photosynthetic system as another target for conferring salt tolerance in crop plants.
Genetic Characterization of Domestic Apple Varieties from Tuzla Canton, BiH
Authors: Salkić Ensar , Salkic Besim , Hercegovac Amela , Avdić Aldijana , Dorić Azra , Imširović Emir 
Published: May 2021

Aims: The basic precondition for apple breeding is the genetic diversity of varieties, which implies a large number of different, positive genes that enable adaptation to different weather conditions, resistance to new diseases and pests. One of the reliable sources of genetic diversity are indigenous varieties of Bosnia and Herzegovina. Their genetic identification is the first step in a process that has as its ultimate goal the collection of genetic material. The main goal of this research is to analyze the genetic variability of five indigenous varieties of apple in Tuzla Canton, Bosnia and Herzegovina in terms of contributing to the management of conservation and expansion of existing genetic resources, spreading this material through registered nurseries.
Study Design: The research included fiveautochthonous apple varieties: "Ovčji nos“ “Dobrić“, "Šarenika“, "Rančica“ and "Petrovača“.
Place and Duration of Study: Samples of young leaves were collected at the site of Donji Moranjci, City of Srebrenik,Tuzla Canton, Bosnia and Herzegovina in the spring of 2019.
Methodology: In order to determine the genetic diversity of five indigenous apple varieties were genotyped ten SSR(Simple Sequence Repeats) markers.
Results: No cases of synonyms or homonyms were found within the analyzed set.The results of the study indicate a pronounced differentiation, ie all five examined varieties represent unique genotypes.
Conclusion: The examined sets of genotypes possess significant genetic variability, which is important especially when we consider that a relatively small number of samples have been analyzed.
Pattern of Cancer in Irrua Specialist Teaching Hospital
Authors: Owobu Clifford Ikhuoria , Azeke Akhator Terence , Ideiyenmin Victor Valentine , Enegbuya Orume , Owobu Adaugo Chizoma , Isoa Ehioze Matthew , Tagar Esteem , Ozah Ehiremhen , Igbe Alex Payim , Eifediyi Reuben , Odike Maxy 
Published: May 2021

Aims: To reveal the pattern and trend of cancer in a predominantly rural population in Nigeria and compare the findings with those of earlier researches across the world.
Study Design: A descriptive retrospective analysis of all cancer cases seen among surgical specimens in Irrua Specialist Teaching Hospital. The cancer cases are classified according to the organ/tissue involved and the data obtained were analysed using SPSS (version 25).
Place and Duration of Study: The Department of Anatomic Pathology, Irrua Specialist Teaching Hospital, Nigeria; between January 2011 and December 2020.
Results: A total of 9,058 histologic samples were reviewed out of which 1,474 (16.27%) were cancer cases. The yearly number of cancer cases increased from 85 in 2011, to 258 over the next 10-year study period. At variance with WHO 2020 GLOBOCAN worldwide estimates, the common cancer types seen in this study (both sexes combined) were prostate cancer, breast cancer, cervical cancer, colorectal cancer and non-melanoma skin cancer, in decreasing frequencies. The peak age of occurrence was the 7th decade while the mean age was 54.21 years, and the gender-specific mean ages for males and females were 59.92 years and 49.44 years respectively. The male to female ratio was 1:1.2 and males are more likely to be diagnosed of cancer approximately 10 years later than their female counterparts.
Conclusion: Many of the findings in this study are similar to those of previous researches across the country. It is our hope that the findings in this study would contribute to national data and be found useful in efforts to build a more inclusive and robust national system of cancer registration.
Results of a randomized double‐blind study evaluating luvadaxistat in adults with Friedreich ataxia
Authors: Wang Hao , Norton Jonathan , Xu Lin , DeMartinis Nicholas , Sen Rohini , Shah Ankit , Farmer Jennifer , Lynch David 
Published: May 2021

AbstractObjectivesFriedreich ataxia (FRDA) is a rare disorder with progressive neurodegeneration and cardiomyopathy. Luvadaxistat (also known as TAK‐831; NBI‐1065844), an inhibitor of the enzyme d‐amino acid oxidase, has demonstrated beneficial effects in preclinical models relevant to FRDA. This phase 2, randomized, double‐blind, placebo‐controlled, parallel‐arm study evaluated the efficacy and safety of oral luvadaxistat in adults with FRDA.MethodsAdult patients with FRDA were randomized 2:1:2 to placebo, luvadaxistat 75 mg twice daily (BID), or luvadaxistat 300 mg BID for 12 weeks. The primary endpoint changed from baseline at week 12 on the inverse of the time to complete the nine‐hole peg test (9‐HPT−1), a performance‐based measure of the function of the upper extremities and manual dexterity. Comparisons between luvadaxistat and placebo were made using a mixed model for repeated measures.ResultsOf 67 randomized patients, 63 (94%) completed the study. For the primary endpoint, there was no statistically significant difference in change from baseline on the 9‐HPT−1 (seconds−1) at week 12 between placebo (0.00029) and luvadaxistat 75 mg BID (−0.00031) or luvadaxistat 300 mg BID (−0.00059); least squares mean differences versus placebo (standard error) were −0.00054 (0.000746) for the 75 mg dose and −0.00069 (0.000616) for the 300 mg dose. Luvadaxistat was safe and well tolerated; the majority of reported adverse events were mild in intensity.InterpretationLuvadaxistat was safe and well tolerated in this cohort of adults with FRDA; however, it did not demonstrate efficacy as a treatment for this condition.
AXHg3P2S8 (A = Rb, Cs; X = Cl, Br): New Excellent Infrared Nonlinear Optical Materials with Mixed‐Anion Chalcohalide Groups of Trigonal Planar [HgS2X]3− and Tetrahedral [HgS3X]5−
Authors: Xing Wenhao , Tang Chunlan , Wang Naizheng , Li Chunxiao , Uykur Ece , Wu Jieyun , Lin Zheshuai , Yao Jiyong , Yin Wenlong , Kang Bin 
Published: May 2021

AbstractA series of nonlinear optical (NLO) chalcohalides AXHg3P2S8 (A = Rb, Cs; X = Cl, Br), which contain various Hg‐based building units including mixed‐anion trigonal planar [HgS2X]3− and tetrahedral [HgS3X]5−, are successfully synthesized. These compounds display good water resistance, wide infrared transparent region (0.42–17 µm), high laser‐induced damage thresholds (4.5–6 × AgGaS2), and strong phase‐matchable second harmonic generation (SHG) response close to AgGaS2. The mixed‐anion chalcohalide groups serving as functional building units in NLO materials are studied for the first time and proven to be very effective. This work opens a new avenue for new NLO material design to achieve the balance between strong SHG efficiency and large bandgap.
Flowers of Apocynaceae in amber from the early Eocene of India
Authors: Singh Hukam , Judd Walter S. , Samant Bandana , Agnihotri Priya , Grimaldi David A. , Manchester Steven R. 
Published: May 2021

PremiseEarly Eocene ambers of the Cambay lignite in Gujarat, India, are well known for their diverse insect fauna and dispersed pollen, but the included flowers have received limited attention. The fossil record of Apocynaceae is relatively poor, and the distinctive floral characters of this family have not been recognized in the fossil record before.MethodsRemains of tiny flowers in amber were studied by micro‐CT scanning, reflected light, and epifluorescence microscopy.ResultsFlowers of Maryendressantha succinifera gen. et. sp. n. have actinomorphic, pentamerous, tubular corollas 2.2–2.3 mm wide, and 1.7–2.1 mm deep with sinistrorse aestivation and androecia consisting of a whorl of five stamens attached by short filaments to the lower half of the corolla tube. Anthers are ovate, rounded basally and apically tapered with their connectives convergent with one another in a conical configuration. The pollen is globose, psilate, tricolporate, and very small (10–11 µm). The combined characters indicate a position within the grade known as subfamily Rauvolfioideae.ConclusionsThese fossils, as the oldest remains of Rauvolfioids, complement the fossil records of Apocynoid and Asclepioid fossil seeds from other regions, demonstrating that the Apocynaceae were well established by the early Eocene, mostly consistent with prior divergence estimates for the phylogeny of this family. Potential pollinators, also preserved in the Cambay amber, include mosquitos, gnats, small moths, and stingless bees.
The Longitudinal Early‐onset Alzheimer's Disease Study (LEADS): Framework and methodology
Authors: Apostolova Liana G. , Aisen Paul , Eloyan Ani , Fagan Anne , Fargo Keith N. , Foroud Tatiana , Gatsonis Constantine , Grinberg Lea T. , Jack Clifford R. , Kramer Joel , Koeppe Robert , Kukull Walter A. , Murray Melissa E. , Nudelman Kelly , Rumbaugh Malia , Toga Arthur , Vemuri Prashanthi , Trullinger Amy , Iaccarino Leonardo , Day Gregory S. , Graff‐Radford Neill R. , Honig Lawrence S. , Jones David T. , Masdeu Joseph , Mendez Mario , Musiek Erik , Onyike Chiadi U. , Rogalski Emily , Salloway Steve , Wolk David A. , Wingo Thomas S. , Carrillo Maria C. , Dickerson Bradford C. , Rabinovici Gil D. ,   the LEADS Consortium
Published: May 2021

AbstractPatients with early‐onset Alzheimer's disease (EOAD) are commonly excluded from large‐scale observational and therapeutic studies due to their young age, atypical presentation, or absence of pathogenic mutations. The goals of the Longitudinal EOAD Study (LEADS) are to (1) define the clinical, imaging, and fluid biomarker characteristics of EOAD; (2) develop sensitive cognitive and biomarker measures for future clinical and research use; and (3) establish a trial‐ready network. LEADS will follow 400 amyloid beta (Aβ)‐positive EOAD, 200 Aβ‐negative EOnonAD that meet National Institute on Aging–Alzheimer's Association (NIA‐AA) criteria for mild cognitive impairment (MCI) or AD dementia, and 100 age‐matched controls. Participants will undergo clinical and cognitive assessments, magnetic resonance imaging (MRI), [18F]Florbetaben and [18F]Flortaucipir positron emission tomography (PET), lumbar puncture, and blood draw for DNA, RNA, plasma, serum and peripheral blood mononuclear cells, and post‐mortem assessment. To develop more effective AD treatments, scientists need to understand the genetic, biological, and clinical processes involved in EOAD. LEADS will develop a public resource that will enable future planning and implementation of EOAD clinical trials.