Hasil untuk "General works"

R. Lipsey, K. Lancaster

Maury A. Nation, Cindy A. Crusto, A. Wandersman et al.

Fengguo Wei, Sankardas Roy, Xinming Ou et al.

Mingsheng Long, Jianmin Wang, Guiguang Ding et al.

Domain transfer learning, which learns a target classifier using labeled data from a different distribution, has shown promising value in knowledge discovery yet still been a challenging problem. Most previous works designed adaptive classifiers by exploring two learning strategies independently: distribution adaptation and label propagation. In this paper, we propose a novel transfer learning framework, referred to as Adaptation Regularization based Transfer Learning (ARTL), to model them in a unified way based on the structural risk minimization principle and the regularization theory. Specifically, ARTL learns the adaptive classifier by simultaneously optimizing the structural risk functional, the joint distribution matching between domains, and the manifold consistency underlying marginal distribution. Based on the framework, we propose two novel methods using Regularized Least Squares (RLS) and Support Vector Machines (SVMs), respectively, and use the Representer theorem in reproducing kernel Hilbert space to derive corresponding solutions. Comprehensive experiments verify that ARTL can significantly outperform state-of-the-art learning methods on several public text and image datasets.

Mauro Marino-Jiménez, Norma Sánchez-Chávez, Yenny Rivero-Fortón et al.

Student performance, disciplinary innovation and teaching methodology occupy the main concerns of educational research. Therefore, there is a greater interest in gamification strategies, where digital tools facilitate the development of competitive activities and strengthening of learning. One example of this idea is the use of video games created for non-educational purposes, where disciplinary strategies and/or social skills can be developed. In this paper, the game Among Us is used to develop an educational experience at higher education. Its use helps to develop a methodology for the identification and analysis of fallacies, according to their recurrency and effectiveness. The result of this learning experience led to a greater comprehension about the use of fallacies, favorable perceptions about the use of games for educational experience, and a deeper reflection about social intelligence in the students.

Shujuan Ding, Ying Ruan, Lei Dou

In recent years, the essential roles of digital payment have gradually emerged. However, current research on digital payment adoption models rarely incorporates the outcomes of digital payment, and it also gives less consideration to rural residents. Considering these two issues as a research gap, this article establishes a unified digital payment use and credit availability model by extending the UTAUT2 framework in two aspects and applying it to China’s rural residents. The first extension is to add credit availability as an outcome variable of digital payment use. The second is to add two factors important to farmers, perceived riskiness and innovativeness, as constructs. Structural equation modeling is employed to analyze data collected from nearly 500 Chinese rural residents. The results show that almost 90% of rural residents have used digital payment. However, only a low proportion use it for many purposes or frequently. Rural residents’ digital payment use can increase credit availability. Performance expectancy, effort expectancy, social influence, price value, and innovativeness significantly and positively affect digital payment intention and behavior, thereby indirectly improving credit availability. However, the perceived risk does not influence digital payment adoption, possibly due to effective protective behaviors. In addition to the indirect effect, the results show that innovativeness also has a direct impact on credit availability. JEL Classification : M15, G21.

Carlos Cabanzo, Favio Cala Vitery, Ingrid Fonseca

This study aims to analyze the influence of the discourse of international organizations on university social responsibility (USR), from international organizations, in the policy and management frameworks of the State University System in Colombia. Then, we reviewed institutional documents of global and regional organizations, as well as educational policy documents from higher education institutions. Using Atlas Ti. 23 software, our findings indicate that universities adopt the models proposed by international organizations with different approaches. The policy and management frameworks, aligned with François Vallaeys’“impact” perspective, emphasize the importance of tangible results. Seven of the universities studied articulate a well-defined USR policy, with most integrating it into extension and outreach processes. We conclude that USR should be related to education, initiative integration, management, research, organizational culture, and management indicators. We recommend further studies on how USR policies are integrated in higher education institutions.

Shahid Mahmood, Asifa Iqbal, Amel Ali Alhussan et al.

Abstract This study investigates the pivotal role of political stability, good governance, and institutional support in achieving Sustainable Development Goals (SDGs) 7, 11, and 12 in Pakistan, an emerging economy. SDG 7 deals with affordable, reliable, sustainable and modern energy for all, SDG 11 deals with sustainable cities and communities and SDGs 12 promotes sustainable consumption and production patterns. The data was collected using a quantitative method from various sources, including the Ministry of Planning, Development and Special Initiatives, the Ministry of Climate Change, the Pakistan Institute of Development Economics, and various NGOs involved in issues such as renewable energy, sustainable cities, and responsible consumption. The collected data was analyzed by using SMART PLS. This study concludes that political stability serves as the foundation for achieving sustainable development goals. It has been observed that the implementation of good governance, which includes principles of transparency, accountability, and public participation, significantly enhances the effectiveness of policies aimed at achieving these SDGs. More specifically, sufficient financial resources and appropriate physical infrastructure are identified as key factors in addressing challenges related to Pakistan’s sustainable development goals. Policymakers should also prioritize investments in sustainable infrastructure projects that align with SDGs 7, 11, and 12, such as investing in renewable energy sources, sustainable urban development, and promoting responsible consumption and production practices.

Tulay Ilhan-Nas, Aysegul Saglam, Tarhan Okan et al.

Industry 4.0, whose effects have been more and more noticeable in recent years, and the digital change it brings call for a new educational model that aligns university instructional processes and curricula with the demands of business. This approach, known as University 4.0, intends to promote more technology-based applications, the power of innovation, the training of skilled specialists to satisfy industrial needs, and the development of competences that can achieve multidisciplinary projects. It is of utmost importance to adapt late-industrializing nations’ educational systems, such as Turkey’s, to this change process. The aim of this research, which takes the Turkish context as a reference, is to reveal how the curricula and educational processes of business schools should be shaped with a perspective that takes into account the human resources requirements of industry 4.0. A decision-making technique that integrates QFD, Delphi, and DEMATEL methods was employed in the study. The results clearly show that the most important expectation for social stakeholders is to provide university-industry cooperation. However, some of the most pressing problems include applied learning through collaborative educational experiences, teamwork skills, changing roles and competencies of academics. The findings point out that the educational activities of business schools must be linked with industry expectations through technology-based training activities and teamwork.

Luca Ciotti

It has been proposed that the flat rotation curves observed at large radii in disk galaxies can be interpreted as an effect of General Relativity (GR) instead of the presence of dark matter (DM) halos in Newtonian gravity. In Ciotti (2022) the problem is rigorously explored in the special setting of the weak-field, low-velocity gravitomagnetic limit of GR. The rotation curves are obtained for purely baryonic disk models with realistic density profiles, and compared with the predictions of Newtonian gravity for the same disks, in absence of DM. The rotation curves are indistinguishable, with percentual GR corrections at all radii of the order of $\approx 10^{-6}$ or less, so that DM halos are required in gravitomagnetism as in Newtonian gravity. From a more general point of view, a list of the most urgent problems that must be addressed by any proposed GR-based alternative to the existence of DM, is given.

L. Vygotsky, R. Rieber, A. S. Carton

Mohamed Alsharnouby, Furkan Alaca, Sonia Chiasson

Angelien Meggersee, Sevias Guvuriro

Small mining towns are often single-industry towns that turn to ghost towns or face negative socio-economic impacts upon mine closure. This study qualitatively explores the roles that mining companies and other key stakeholders (should) play in the development of local economies of the small mining communities to bring about economic sustainability, employing a constant comparative analysis. A small mining town in South Africa is the case study. Legislative and policy frameworks were scrutinized for their effectiveness in promoting economic sustainability. In-depth interviews with key stakeholders were carried out. Key factors limiting the effective implementation of developmental strategies were also explored. The study finds that weak community involvement, lack of trust, poor collaboration, poor municipal capacity, and legislation and policy flaws impact economic sustainability. Sustainable local economic development efforts are reported though. However, such efforts are insufficient because of the legislation and policy frameworks that are promoting short-term growth. Also, the town’s overdependence on the mining company, local government not optimally fulfilling their roles and responsibilities, and minimal community members’ participation on local economic development are other hindrances. However, the fact that the mining company and local municipality do acknowledge the shortcomings in their efforts towards promoting economic sustainability is a promise in minimizing the socio-economic effects of mine closures.

Haihua Yu, Zhiyi Zhuo, Jing Zhang

Based on the Internet Finance development index developed by Peking University in investigating 31 provinces, we use social network analysis to investigate the spatial correlation and influencing factors of the Internet Finance of China’s provinces. The research shows that the spatial correlation of Internet Finance of China’s provinces has significant characteristics of a regional gradient. The correlation among their correlation is moderate, more closely related, smooth, or weak. All provinces gather to form four plates; they play their respective functional advantages and have different statuses, functions, and roles. The differences between provinces in industrial structure, degree of marketization, infrastructure, degree of informatization, and geographical distance significantly affect the spatial correlation of Internet finance development in China, and the degree of influence decreases in turn. Our results might positively affect policymakers in promoting the coordinated development of regional Internet finance in China.

General Ozochiawaeze

Direct imaging methods recover the presence, position, and shape of the unknown obstacles in time-harmonic inverse scattering without a priori knowledge of either the physical properties or the number of disconnected components of the scatterer, i.e., on the boundary condition. However, most of these methods require multi-static data and only obtain partial information about the obstacle. These qualitative methods are based on constructing indicator functions defined on the domain of interest, which help determine whether a spatial point or point source lies inside or outside the scatterer. This paper explains the main themes of each of these methods, with emphasis on highlighting the advantages and limitations of each scheme. Additionally, we will classify each method and describe how some of these methods are closely related to each other.

N. V. Krishnendu, Frank Ohme

The detections of gravitational-wave (GW) signals from compact binary coalescence by ground-based detectors have opened up the era of GW astronomy. These observations provide opportunities to test Einstein's general theory of relativity at the strong-field regime. Here we give a brief overview of the various GW-based tests of General Relativity (GR) performed by the LIGO-Virgo collaboration on the detected GW events to date. After providing details for the tests performed in four categories, we discuss the prospects for each test in the context of future GW detectors. The four categories of tests include the consistency tests, parametrized tests for GW generation and propagation, tests for the merger remnant properties, and GW polarization tests.

F. Rousset, Katharina Schratz

We introduce a new general framework for the approximation of evolution equations at low regularity and develop a new class of schemes for a wide range of equations under lower regularity assumptions than classical methods require. In contrast to previous works, our new framework allows a unified practical formulation and the construction of the new schemes does not rely on any Fourier based expansions. This allows us for the first time to overcome the severe restriction to periodic boundary conditions, to embed in the same framework parabolic and dispersive equations and to handle nonlinearities that are not polynomial. In particular, as our new formalism does no longer require periodicity of the problem, one may couple the new time discretisation technique not only with spectral methods, but rather with various spatial discretisations. We apply our general theory to the time discretization of various concrete PDEs, such as the nonlinear heat equation, the nonlinear Schr\"odinger equation, the complex Ginzburg-Landau equation, the half wave and Klein--Gordon equations, set in $\Omega \subset \mathbb{R}^d$, $d \leq 3$ with suitable boundary conditions.

Peter Robinson, R. Ramesh

The General Purpose Atomic Crosschain Transaction protocol allows composable programming across multiple Ethereum blockchains. It allows for inter-contract and inter-blockchain function calls that are both synchronous and atomic: if one part fails, the whole call execution tree of function calls is rolled back. The protocol operates on existing Ethereum blockchains without modification. It works for both public permissioned and consortium blockchains. This paper describes the protocol, analyses it in terms of Gas usage and Finalised Block Periods for three scenarios: reading a value from one blockchain to another, writing a value from one blockchain to another, and a trade finance system involving five contracts on five blockchains with a complex call execution tree, and provides an initial security analysis that shows that the protocol has Safety and Liveness properties.

C. Anderson, Kevin Zhan, M. Boyd et al.

Background: The review was carried out to inform the evaluation of the clinical pharmacists in general practice pilot scheme, a world leading initiative to improve health care delivery in England. Around 500 pharmacists are already working in general practice as part of the pilot, launched in July 2015. Objectives: The review attempts to explain the how pharmacists working in general practice is being implemented in the UK and beyond, what works well, what does not work so well and everything in‐between. Methods: This realist review was conducted to the RAMESES standards. Studies were identified by searching three databases, Medline, Embase and Scopus. Additional papers were gathered from reference lists, Google searches and via the find similar citations feature. Results: A total of 83 papers and articles were initially identified from Medline (19), Embase (31) and Scopus (32). With close reading, the final review consisted of 43 papers relating to 38 studies. Most of the research was undertaken in the field of pharmacy practice and over half of the studies investigated the perspectives of different stakeholders using questionnaires or qualitative methods. Conclusion: The pharmacist working in general practice is still a relatively new concept and further more in‐depth research is still required. However, from this small number of studies, the common barriers and facilitators to the implementation can be identified. The review also lists mechanisms that will be needed to ensure the effective implementation of this initiative.

USM ADMIN

MONEDELE OLANDEZE ÎN PRINCIPATUL MOLDOVEI (1711-1859)1 Absența unei monede naționale în Principatul Moldovei a permis pătrunderea diverselor tipuri de monede străine în acest spațiu. Importanța monedelor olandeze în Principatul Moldovei pe parcursul secolelor XVIII și XIX este una esențială, fapt confirmat atât de sursele scrise, cât și de descoperirile monetare. Atestarea monedelor olandeze sub formă de descoperiri monetare, pe o zonă extinsă a Principatului Moldovei, dar și menționarea lor în diferite surse scrise, confirmă răspândirea și importanța monedei olandeze în circulația monetară din acest teritoriu. Prezența talerului și a ducatului în circulația monetară a fost atât de semnificativă, încât se va produce situația în care aceste monede, deși internaționale, vor deține rolul de monede oficiale. Cuvinte-cheie: Principatul Moldovei, monedă, circulaţie monetară, tezaur, taler, ducat.