collective models
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Materials ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 139
Author(s):  
Monika Słupska ◽  
Ewa Syguła ◽  
Piotr Komarnicki ◽  
Wiesław Szulczewski ◽  
Roman Stopa

From the producers’ point of view, there is no universal and quick method to predict bruise area when dropping an apple from a certain height onto a certain type of substrate. In this study the authors presented a very simple method to estimate bruise volume based on drop height and substrate material. Three varieties of apples were selected for the study: Idared, Golden Delicious, and Jonagold. Their weight, turgor, moisture, and sugar content were measured to determine morphological differences. In the next step, fruit bruise volumes were determined after a free fall test from a height of 10 to 150 mm in 10 mm increments. Based on the results of the research, linear regression models were performed to predict bruise volume on the basis of the drop height and type of substrate on which the fruit was dropped. Wood and concrete represented the stiffest substrates and it was expected that wood would respond more subtly during the free fall test. Meanwhile, wood appeared to react almost identically to concrete. Corrugated cardboard minimized bruising at the lowest discharge heights, but as the drop height increased, the cardboard degraded and the apple bruising level reached the results as for wood and concrete. Contrary to cardboard, the foam protected apples from bruising up to a drop height of 50 mm and absorbed kinetic energy up to the highest drop heights. Idared proved to be the most resistant to damage, while Golden Delicious was medium and Jonagold was least resistant to damage. Numerical models are a practical tool to quickly estimate bruise volume with an accuracy of about 75% for collective models (including all cultivars dropped on each of the given substrate) and 93% for separate models (including single cultivar dropped on each of the given substrate).


2021 ◽  
Vol 66 (12) ◽  
pp. 1013
Author(s):  
S.N. Abood ◽  
A.A. Al-Rawi ◽  
L.A. Najam ◽  
F.M. Al-Jomaily

Mixed-symmetry states of 92Zr and 94Mo isotopes are investigated with the use of the collective models, Interacting Boson Model-2 (IBM-2) and Quasiparticle Phonon Model (QPM). The energy spectra and electromagnetic transition rates for these isotopes are calculated. The results of IBM-2 and QPM are compared with available experimental data. We have obtained a satisfactory agreement, and IBM-2 gives a better description. In these isotopes, we observe a few states having a mixed symmetry such as 2+2, 2+3, 3+1, and 1+s. It is found that these isotopes have a vibrational shape corresponding to the U(5) symmetry.


2021 ◽  
Vol 1 ◽  
Author(s):  
Steven D. Brown ◽  
Paula Reavey

Abstract In this paper, we consider changes to memorial practices for mental health service users during the asylum period of the mid-nineteenth up to the end of the twentieth century and into the twenty-first century. The closing of large asylums in the UK has been largely welcomed by professionals and service-users alike, but their closure has led to a decrease in continuous and consistent care for those with enduring mental health challenges. Temporary and time-limited mental health services, largely dedicated to crisis management and risk reduction have failed to enable memory practices outside the therapy room. This is an unusual case of privatised memories being favoured over collective memorial activity. We argue that the collectivisation of service user memories, especially in institutions containing large numbers of long-stay patients, would benefit both staff and patients. The benefit would be in the development of awareness of how service users make sense of their past in relation to their present stay in hospital, how they might connect with others in similar positions and how they may connect with the world and others upon future release. This seems to us central to a project of recovery and yet is rarely practised in any mental health institution in the UK, despite being central to other forms of care provision, such as elderly and children's care services. We offer some suggestions on how collective models of memory in mental health might assist in this project of recovery and create greater visibility between past, present and future imaginings.


2021 ◽  
Author(s):  
Olivier Bargain ◽  
Guy Lacroix ◽  
Luca Tiberti

Abstract Welfare analyses conducted by policy practitioners around the world usually rely on equivalised or per-capita expenditures and ignore the extent of within-household inequality. Recent advances in the estimation of collective models suggest ways to retrieve the complete sharing process within families using homogeneity assumptions (typically preference stability upon exclusive goods across individuals or household types) and the observation of exclusive goods. So far, the prediction of these models has not been validated, essentially because intrahousehold allocation is seldom observed. We provide such a validation by leveraging a unique dataset from Bangladesh, which contains information on the fully individualised expenditures of each family member. We also test the core assumption (efficiency) and homogeneity assumptions used for identification. It turns out that the collective model predicts individual resources reasonably well when using clothing, i.e., one of the rare goods commonly assignable to male, female and children in standard expenditure surveys. It also allows identifying poor individuals in non-poor households while the traditional approach understates poverty among the poorest individuals.


Author(s):  
Tolstoguzov Oleg Viktorovich ◽  
Belykh Anastasia Dmitrievna

Realization of a modernization agenda requires improvement of competencies and intellectualization of territorial development of the management system in conditions of increasing uncertainty of the management situation and systemic risks. The purpose of our study was to analyze a spatial distribution of an intellectual potential of regions and propose a conclusion about leveling of risks from gaps in the economic space. We consider the following competencies as a basis of a potential that determines intellectualization of the management system. This is the ability to train personnel of HSQ and create and promote innovations. The factor analysis was used as a tool. The following conclusion was made: it is necessary to pay attention to development of national scientific schools because the education system is a basis for a formation of the competence economy. Moreover, it is necessary to stimulate development of the entire system of knowledge reproduction, and the entire space without gaps. The pandemic forced active development of digital platforms, transferring many spheres of public life. Opportunities for creating “the network intelligence” have increased. The need to improve competencies has increased, including development of a digital environment. It is possible to eliminate systemic risks that have arisen due to the gap in the economic space by strengthening collaborations based on digital platforms and forming “the network intelligence”. The basic element of knowledge reproduction is training of qualified personnel at the university education system. Therefore, it is necessary to continue strengthening the integration and form collective models of the innovation process.


2021 ◽  
Vol 13 (8) ◽  
pp. 1544
Author(s):  
Tang-Huang Lin ◽  
Si-Chee Tsay ◽  
Wei-Hung Lien ◽  
Neng-Huei Lin ◽  
Ta-Chih Hsiao

Quantifying aerosol compositions (e.g., type, loading) from remotely sensed measurements by spaceborne, suborbital and ground-based platforms is a challenging task. In this study, the first and second-order spectral derivatives of aerosol optical depth (AOD) with respect to wavelength are explored to determine the partitions of the major components of aerosols based on the spectral dependence of their particle optical size and complex refractive index. With theoretical simulations from the Second Simulation of a Satellite Signal in the Solar Spectrum (6S) model, AOD spectral derivatives are characterized for collective models of aerosol types, such as mineral dust (DS) particles, biomass-burning (BB) aerosols and anthropogenic pollutants (AP), as well as stretching out to the mixtures among them. Based on the intrinsic values from normalized spectral derivatives, referenced as the Normalized Derivative Aerosol Index (NDAI), a unique pattern is clearly exhibited for bounding the major aerosol components; in turn, fractions of the total AOD (fAOD) for major aerosol components can be extracted. The subtlety of this NDAI method is examined by using measurements of typical aerosol cases identified carefully by the ground-based Aerosol Robotic Network (AERONET) sun–sky spectroradiometer. The results may be highly practicable for quantifying fAOD among mixed-type aerosols by means of the normalized AOD spectral derivatives.


Author(s):  
Anthony Mitchell ◽  
Martin Rich

This paper reviews approaches to teaching research methods and the effectiveness of the student supervisor relationship in managing research projects. Corporate scandal, changes in society, the emergence of online technologies and a need to reduce teaching costs have all led business schools to change their curriculum including how research methods are taught and undergraduate and postgraduate projects supervised. Management research, and the manner in which research methods are both taught and practiced continue to make a key contribution and play a significant role in the partnership between academia and practice. Virtual learning has been helpful in a better understanding of research methods, developing critical thinking and understanding issues in more depth that are briefly covered in class. Researchers have found that the blending learning approach and use of computer‑mediated discourse supported a collaborative learning approach and resulted in more active and reflective learners (Altinay and Paraskevas, 2007). Despite this positive example, the use of technology for learning has generally been limited to supplementing face to face learning (Thomas and Thomas, 2012). The class is increasingly culturally diverse, students more mobile while academics may be Anglo‑centric and westernised. Supervision needs to be responsive to the changing needs and ambitions of the student; to move away from a dyadic relationship between supervisor and student, and emphasise the importance of collaborative learning environments and collective models of supervision (Malfroy, 2005). Literature reviewing three related research questions is presented. Questions remain as to whether changes are driven by a need to reduce cost or improve pedagogy. Data collection has started with undergraduate business students through pilot surveys and interviews to gain an improved understanding of the trends, initiatives and best practice. A further paper will explore in more detail postgraduate business students. At a time when some schools are moving more content on‑line and seeking new forms of assessment so there is a need to ensure that management research continues to fulfil a contribution towards intellectual and practical understanding. Corona virus has made this need more urgent.


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