Mobility in Student Data Systems

2017 ◽  
Author(s):  
Ron Avi Astor ◽  
Linda Jacobson ◽  
Stephanie L. Wrabel ◽  
Rami Benbenishty ◽  
Diana Pineda
Keyword(s):  
Current Data ◽  
Data Systems ◽  
Homeless Students ◽  
New School ◽  
Student Data ◽  
Mobile Students ◽  
Definition Of ◽  
Additional Support ◽  
Changing Schools

For schools to be more proactive about addressing the needs of transitioning students and families, it’s important that district officials have a good sense of how often students are changing schools, who these students are, where they’re coming from, and where they’re going. Currently, there is wide variation in how states handle mobility in their student data systems. While some states have a specific definition of mobility, there are also differences in those definitions. By law, states track migrant and homeless students, but not all flag other groups of students that are likely to be mobile, such as military-connected students or those in foster care. Another complication is that when students move, schools do not mark the reason for the transition. Without knowing the reason for the change, all mobile students are lumped into one category— movers. But, as the previous chapter showed, the circumstances surrounding a move can affect students in different ways and have implications for how schools respond. If a move is proactive, for example, the family and the child may feel less stress and the student might feel more positive about the experience. If the change into a new school is reactive—caused perhaps by a difficult financial situation or leaving a negative situation at another school— the student and parents might feel more anxiety about the new school and need additional support and friendship during that time. Current data systems and the information they provide make it very difficult for researchers to separate the effect of the school move from the effect of the circumstances surrounding the move. These are important distinctions for educators to consider. Data systems do allow for researchers and practitioners to understand if a student moved during the summer or during the academic year. The timing of moves may be suggestive of the type of move a student is making; proactive moves may be more likely to occur in the summer months when learning will not be disrupted. Mid-year moves may have a proactive element, such as families moving for a better job, but they may also be reactive in nature, such as a loss of housing.

scholarly journals A numerical fit of analytical to simulated density profiles in dark matter haloes

2005 ◽  
pp. 13-32 ◽  
Author(s):  
R. Caimmi ◽  
C. Marmo ◽  
T. Valentinuzzi
Keyword(s):  
High Resolution ◽  
Density Profile ◽  
Geometrical Parameters ◽  
Density Profiles ◽  
Mean Values ◽  
Geometrical Properties ◽  
Best Fitting ◽  
Definition Of ◽  
Additional Support ◽  
Open Question

Analytical and geometrical properties of generalized power-law (GPL) density profiles are investigated in detail. In particular, a one-to-one correspondence is found between mathematical parameters (a scaling radius, r0, a scaling density, ?0, and three exponents, ?, ?, ?), and geometrical parameters (the coordinates of the intersection of the asymptotes, xC, yC, and three vertical intercepts, b, b?, b?, related to the curve and the asymptotes, respectively): (r0,?0,?,?,?) ? (xC,yC,b,b?,b?). Then GPL density profiles are compared with simulated dark haloes (SDH) density profiles, and nonlinear least-absolute values and least-squares fits involving the above mentioned five parameters (RFSM5 method) are prescribed. More specifically, the sum of absolute values or squares of absolute logarithmic residuals, Ri=log?SDH(ri) ? log?GPL(ri), is evaluated on 10 points making a 5dimension hypergrid, through a few iterations. The size is progressively reduced around a fiducial minimum, and superpositions on nodes of earlier hypergrids are avoided. An application is made to a sample of 17 SDHs on the scale of cluster of galaxies, within a flat ?CDM cosmological model (Rasia et al. 2004). In dealing with the mean SDH density profile, a virial radius, Rvir, averaged over the whole sample, is assigned, which allows the calculation of the remaining parameters. Using a RFSM5 method provides a better fit with respect to other methods. The geometrical parameters, averaged over the whole sample of best fitting GPL density profiles, yield (?, ?, ?) ? (0.6,3.1,1.0), to be compared with (?, ?, ?) = (1,3,1), i.e. the NFW density profile (Navarro et al. 1995, 1996, 1997), (?, ?, ?) = (1.5,3, 1.5) (Moore et al. 1998, 1999), (?, ?, ?) = (1,2.5,1) (Rasia et al. 2004); and, in addition, ? ? 1.5 (Hiotelis 2003), deduced from the application of a RFSM5 method, but using a different definition of scaled radius, or concentration; and ? ? 1.21.3 deduced from more recent high-resolution simulations (Diemand et al. 2004, Reed et al. 2005). No evident correlation is found between SDH dynamical state (relaxed or merging) and asymptotic inner slope of the fitting logarithmic density profile or (for SDH comparable virial masses) scaled radius. Mean values and standard deviations of some parameters are calculated, and in particular the decimal logarithm of the scaled radius, ?vir, reads < log?vir >= 0.74 and ?slog?vir = 0.150.17, consistent with previous results related to NFW density profiles. It provides additional support to the idea, that NFW density profiles may be considered as a convenient way to parametrize SDH density profiles, without implying that it necessarily produces the best possible fit (Bullock et al. 2001). A certain degree of degeneracy is found in fitting GPL to SDH density profiles. If it is intrinsic to the RFSM5 method or it could be reduced by the next generation of high-resolution simulations, still remains an open question. .

Petrophysical Rocks: Electrofacies and Lithofacies

2014 ◽  
Author(s):  
John H. Doveton
Keyword(s):  
Particle Size ◽  
Physical Properties ◽  
Sedimentary Rocks ◽  
Well Control ◽  
The Core ◽  
Lateral Extent ◽  
Petrophysical Logs ◽  
Definition Of

Many years ago, the classification of sedimentary rocks was largely descriptive and relied primarily on petrographic methods for composition and granulometry for particle size. The compositional aspect broadly matches the goals of the previous chapter in estimating mineral content from petrophysical logs. With the development of sedimentology, sedimentary rocks were now considered in terms of the depositional environment in which they originated. Uniformitarianism, the doctrine that the present is the key to the past, linked the formation of sediments in the modern day to their ancient lithified equivalents. Classification was now structured in terms of genesis and formalized in the concept of “facies.” A widely quoted definition of facies was given by Reading (1978) who stated, “A facies should ideally be a distinctive rock that forms under certain conditions of sedimentation reflecting a particular process or environment.” This concept identifies facies as process products which, when lithified in the subsurface, form genetic units that can be correlated with well control to establish the geological architecture of a field. The matching of facies with modern depositional analogs means that dimensional measures, such as shape and lateral extent, can be used to condition reasonable geomodels, particularly when well control is sparse or nonuniform. Most wells are logged rather than cored, so that the identification of facies in cores usually provides only a modicum of information to characterize the architecture of an entire field. Consequently, many studies have been made to predict lithofacies from log measurements in order to augment core observations in the development of a satisfactory geomodel that describes the structure of genetic layers across a field. The term “electrofacies” was introduced by Serra and Abbott (1980) as a way to characterize collective associations of log responses that are linked with geological attributes. They defined electrofacies to be “the set of log responses which characterizes a bed and permits it to be distinguished from the others.” Electrofacies are clearly determined by geology, because physical properties of rocks. The intent of electrofacies identification is generally to match them with lithofacies identified in the core or an outcrop.

Functionalism and Stratification, Socio-Cultural Evolution and Revolution

2016 ◽  
pp. 107-130
Keyword(s):  
Middle Ages ◽  
Cultural Evolution ◽  
A Priori ◽  
Human Beings ◽  
Ibn Khaldun ◽  
Ex Nihilo ◽  
Definition Of ◽  
And Function ◽  
Political Economic

In the previous chapter we argued that the conception of creatio ex nihilo is the determinant of hierarchy and stratification in Judaism and Christianity; Islam teaches that God created divisions as a way for human beings to recognize each other. The metaphysical origin of sociality and the reality of tribal and clan structure are reflected in the Islamic conception of community, gamaat; on a larger scale it is called ummah. Members in Islamic ummah are set apart from non-Muslims. This is dissimilar to the ancient Judaic racial and ethnic symbiosis which came to be known as the “chosen people,” an early manifestation of stratification in monotheistic religions. Among the Muslim scholars of the Middle Ages, Ibn Khaldun approached the objective foundations of sociality, attending to an implicit conception of stratification by appropriating detached observational methods to explain the rise and fall of dynasties. Principally, his work demonstrates the possibility of synthetically a posteriori, based on his personal experience and analytical a priori by which he asserted that the rise and fall are part of the definition of all dynasties. However, since Ibn Khaldun's day, our notion of the objects of structure and function of societies requires that we distinguish many variables in order to understand Islamic societies – particularly the way that their stratification systems are affected by globalization, or their transition toward, or their opposition to modernity. Using geometry metaphorically, it is true that we have departed from Euclidian theorems with the advent of various geometries. Yet Euclidian geometry still has many functions, a point that amplifies the intersections of both Euclidian and non-Euclidian geometries. Notwithstanding the various intersections among political, economic, religious, cultural and social matrices that provide multiple logics to understand the operations of societies, the Khaldunic notion of rise and fall has survived to this day.

scholarly journals Electoral contention and violence (ECAV): A new dataset

2019 ◽  
Vol 56 (5) ◽  
pp. 714-723 ◽  
Author(s):  
Ursula Daxecker ◽  
Elio Amicarelli ◽  
Alexander Jung
Keyword(s):  
Cote D'ivoire ◽  
Electoral Competition ◽  
Current Data ◽  
National Elections ◽  
Data Limitations ◽  
Disaggregated Data ◽  
State Actors ◽  
Definition Of ◽  
Cross National ◽  
Violent Events

Recent elections in Afghanistan, Bangladesh, Côte d’Ivoire, Egypt, Iraq, Kenya, Nigeria, and Pakistan have displayed substantial contestation and violence. A growing literature explores the causes and consequences of electoral contention and violence, but researchers lack comprehensive, disaggregated data establishing a substantive link between elections and violence. The Electoral Contention and Violence (ECAV) dataset conceptualizes electoral contention as nonviolent or violent events of contestation by state or non-state actors related to national elections. The data contain more than 18,000 events of election-related contention covering 136 countries holding competitive national elections between 1990 and 2012. This article describes the scope of ECAV, presents the project’s definition of electoral contention and the variables included, and outlines the coding procedure. We then compare ECAV to other datasets on electoral contention. Cross-national and subnational analyses of electoral competition and violence show that the data are useful for assessing the global and subnational implications of existing theories. ECAV addresses current data limitations by focusing on election-related contention, by using clear criteria to determine whether events are election-related, and by identifying the timing, geocoded location, and actors involved.

Enhancing Teaching With Effective Data Mining Protocols

2019 ◽  
Vol 47 (4) ◽  
pp. 500-512 ◽  
Author(s):  
Li-Ling Chen
Keyword(s):  
Data Mining ◽  
Middle School ◽  
Middle School Teachers ◽  
Data Systems ◽  
School Teachers ◽  
Student Data

Various data systems have been long and pervasively used in schools to collect student data. However, very few educators are able to apply their collected data to improve their teaching. The purpose of this article is to investigate how middle school teachers adapt data mining protocols to enhance their teaching and to improve their students’ learning. Results of the research indicates that most of the middle school teachers use data systems to enter their students’ data under the school requirements and only 20% of the teachers actually retrieve collected data from the system and analyze the data for intervention purpose.

scholarly journals New ideas about the pathogenesis of osteoarthritis, the role of metabolic disorders

2019 ◽  
Vol 16 (2) ◽  
pp. 75-82 ◽  
Author(s):  
Lyudmila I. Alekseeva
Keyword(s):  
Metabolic Syndrome ◽  
Musculoskeletal Diseases ◽  
Clinical Manifestations ◽  
Pain Syndrome ◽  
Functional Condition ◽  
Current Data ◽  
Rapid Progression ◽  
Open Label ◽  
The Metabolic Syndrome ◽  
Definition Of

The article highlights the current data on the prevalence and pathogenesis of osteoarthritis (OA), presents a new definition of the disease, research results on the heterogeneity of OA, its relationship with obesity and metabolic syndrome. Obesity is one of the main factors in the development and more rapid progression of OA, and the presence of metabolic syndrome not only increases the risk of developing the disease, but also determines its severity. It is noted that with an increase of the components of the metabolic syndrome, the severity of OA increases. Therefore, hyperuricemia is associated with the presence of osteophytes and the progression of osteoarthritis, hyperglycemia - with the severity of the clinical manifestations and radiological progression. Much attention is given to the treatment of patients with OA and The European Society for Clinical and Economic Aspects of Osteoporosis, Osteoarthritis and Musculoskeletal Diseases (ESCEO) recommendations for the treatment of knee joints OA updated in 2019. In which for the first time a symptomatic slow-acting drugs for osteoarthritis (SYSADOAs) are assigned as the basis in the treatment of OA. The data on the effectiveness of some drugs from this group are presented. The glycosaminoglycan-peptide complex, which contains pharmacologically high-quality chondroitin sulfate when administered intramuscularly, has a significant effect on the symptoms, and in case of continued use, slows the progression of OA. The multicenter open-label prospective study of diacerein in patients with knee-joint OA combined with metabolic syndrome showed that during therapy pain syndrome and stiffness are reduced, and functional condition of the joints and quality of life of patients improves quickly and significantly. In addition, the positive effect of the drug on some components of the metabolic syndrome was demonstrated: a significant decrease in body mass index, low density lipoproteins, triglycerides, glucose and uric acid.

scholarly journals Conservation tourism as a strategy to promote the conservation of biodiversity among BRICS countries

2021 ◽  
Vol 14 (3) ◽  
Author(s):  
Oldemar de Oliveira Carvalho-Junior ◽  
Minal Desai
Keyword(s):  
Current Data ◽  
Environmental Research ◽  
Current Status ◽  
Brics Countries ◽  
The Social ◽  
Survival And Growth ◽  
The Difference ◽  
Research And Education ◽  
Definition Of ◽  
Available Information

This work aims to discuss tourism among BRICS members, especially between Brazil and India, considering the pandemic caused by COVID-19 and how tourism can help overcome this crisis, promoting biodiversity conservation among member countries. Historical and current data from official international sources, in Brazil and India's government, were obtained and analyzed to create an overview of the current status of tourism among BRICS countries. India represents only 15% of the total tourists who come to Brazil. In Santa Catarina, an important tourist destination in southern Brazil, in 2018, only 56 tourists came from Russia, 39 from China, 32 from India, and 25 from South Africa. As a consequence of COVID-19, tourism will likely have to reinvent itself or, at least, be aware of other windows of opportunity for its survival and growth. As a result, experiential tourism, such as conservation tourism, is expected to consolidate more strongly. Conservation tourism, an innovative proposal, can be defined as the tourism segment that uses natural and cultural heritage, through a socio-environmental research project, with the participation of ecovolunteers, promoting the social entrepreneurship of the communities involved, focused on the experience and learning in protected areas, contributing to their planning, use, sustainability, and conservation, with social responsibility. The difference between conservation tourism and ecotourism is that conservation tourism generates information, unlike ecotourism, which uses available information. This type of tourism, conservation, and community base, with research and education bias, can represent an essential agenda of approximation between the BRICS countries. The definition of a cooperation agenda can be fundamental to promote conservation tourism while helping to protect biodiversity, generating jobs, and being a source of income for the communities involved.

A Review of Data Governance Definitions and Emerging Perspectives

2020 ◽  
Vol 1 (2) ◽  
pp. 30-47
Author(s):  
Uma G. Gupta ◽  
San Cannon
Keyword(s):  
Cross Section ◽  
Text Analysis ◽  
Professional Associations ◽  
Current Data ◽  
Data Governance ◽  
Organizational Mission ◽  
Basic Principles ◽  
Universal Definition ◽  
Definition Of

The field of data governance is emerging globally. Although there is yet no universal definition of the field, the issue of data governance is important to governments, industries, institutions, and professionals across disciplines. This paper summarizes findings from a review of 50 data governance definitions from a cross-section of industries, institutions, and professional associations. Text analysis reveals varying definitions and levels of specificity, focus, and attitudes towards basic principles of control or prescription. Organizational culture is an additional factor likely reflected in semantics shaping the definitions. The paper makes recommendations for developing and designing definitions that are meaningfully aligned to the organization's mission and diverse stakeholders. The main contributions of the paper are 1) comprehensive summary of data governance definitions across industries; 2) role of specificity, focus, and attitudes underlying control; 3) framework to customize data governance definition to align with current data maturity and organizational mission and culture.

scholarly journals Current and Foreseen Tungsten Production in Portugal, and the Need of Safeguarding the Access to Relevant Known Resources

Resources ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 64
Author(s):  
António Mateus ◽  
Catarina Lopes ◽  
Luís Martins ◽  
Mário Abel Gonçalves
Keyword(s):  
Land Use Planning ◽  
Mineral Exploration ◽  
Political Factors ◽  
Time Period ◽  
Future Supply ◽  
Joint Interpretation ◽  
Future Potential ◽  
Definition Of ◽  
Additional Support

The economic and strategic importance of tungsten is widely recognized, but several concerns exist on its stable future supply. Portugal is one of the main tungsten producers in Europe, having generated ≈121 kt of contained tungsten in mineral concentrates from 1910 to 2020, i.e., ≈3.3% of the global production documented for the same time period. Since the early nineties, tungsten mining in Portugal is confined to the Panasqueira deposit which accounts for 79% of the country reserves (≈5.4 kt). However, according to the performed Generalized Verhulst and Richards curve-fitting forecasts, there is a significant future potential for increasing production in Portugal due to the low (<2%) depletion rates of the remaining known tungsten resources (≈141 kt). This projected growth is not necessarily guaranteed, depending on many unpredictable economic, technological, and political factors, besides appropriate social consents. Even so, a prudent land-use planning oriented to long-term needs should avoid the sterilization of the most relevant tungsten resources so far identified in the country. These are resources of “public importance”, as objectively demonstrated with a weighed multi-dimensional (geological, economic, environmental, and social) approach. Safeguarding the access to these resources does not implicate more than ≈6% of the Portugal mainland territory. The joint interpretation of results independently gathered for tungsten production forecasts and for the definition of areas hosting tungsten resources of public importance, provides additional support to political decisions on the urgent need to reconcile mineral exploration surveys and mining with other land uses.

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