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When tooth substance has been lost either by decay or accidental trauma it should be restored aesthetically and functionally to maintain the patient's oral health. Restorative procedures involve removing caries (decayed tooth substance) of the hard outer enamel and softer inner dentine layer. This is achieved by means of burrs and other dental cutting instruments. The shape of the cavity produced must provide retention for the restorative material and prevent further weakening of the tooth leading to possible cuspal fractures. Materials in common use include porcelain, gold, silver‐tin amalgam and various polymers. The decision as to which material to use in any given situation depends on several factors:

Individuals who spend a large percentage of their incomes on consumption are perceived to prefer risks. Since entrepreneurs are well recognized as risk-takers, this chapter investigates whether consumption propensity is associated with entrepreneurship. Using micro-level data from Chinese Household Income Project, we find that households with a higher income–consumption ratio on average have a higher preference for risk-seeking, while they have a lower probability to be entrepreneurs. However, households who have higher consumption–income ratio and are in the top 10% of the wealth distribution are more likely to embark on entrepreneurship. In addition, we find that in-system connection (relationship with government-related units) decreases the likelihood of starting new business, while out-system connection (relationship with market units) increases it. These findings suggest that in an imperfect financial market, start-up finance and connections play important roles for entrepreneurship.

This study investigates the formal/informal employment earnings gap in Turkey. We focus on the earnings differentials that can be explained by observable characteristics and unobservable time-invariant individual heterogeneity. We first, estimate the standard Mincer earnings equations using ordinary least squares (OLS), controlling for individual, household, and job characteristics. Next we use, panel data and the quantile regression (QR) techniques in order to account for unobserved factors which might affect the earnings and the intrinsic heterogeneity within formal and informal sectors. OLS results confirm the existence of an informal sector penalty almost half of which is explained by observable variables. We find that formal-salaried workers are paid significantly higher than their informal counterparts and of the self-employed confirming the heterogeneity within the informal employment. QR results show that pay differentials are not uniform along the earnings distribution. In contrast to the mainstream literature which views informal self-employment as the upper-tier and wage-employment as the lower-tier, we find that self-employment corresponds to the lower-tier in the Turkish labor market. Finally, fixed effects estimation indicates that unobserved individual characteristics combined with controls for observable characteristics explain the pay differentials between formal and informal employment entirely in the total and the female sample. However, informal sector penalty persists in the male sample.

This paper, the first one to use individual-level Turkish panel data, examines the labor market transitions in Turkey along the formal/informal employment divide. The purpose of this paper is to contribute to the limited body of empirical evidence available on mobility and informality in the Turkish labor market.

Toward this end, the authors use Turkish income and Living Conditions Survey panel data for 2006, 2007, 2008 and 2009 to compute the Markov transition probabilities of individuals moving across six different labor market states: formal-salaried (FS), informal-salaried, formal self-employed, informal self-employed, unemployed and inactive. In order to examine the nature of mobility patterns in more detail, the authors then estimate six multinomial logit models individually for each transition adopting a number of individual and employment characteristics as explanatory variables.

The authors find evidence that mobility patterns are fairly similar across different time spans, the probability of remaining in initial state is higher than the probability of transition into another state for all the labor market states, except for unemployment, there is only very limited mobility into the FS state. Gender, education and sector of economic activity are observed to display significant effects on mobility patterns. The results reveal several relationships between the covariates and likelihood of variant transitions.

This study provides a comprehensive and detailed diagnosis of the Turkish labor market. The market is observed to display a rather static structure throughout the period considered. The results indicate that a well recognition of underlying dynamics may help policy makers to produce various effective tools for addressing informality.

First study to analyze labor market mobility across formal/informal sectors using newly available panel data.

Based on unique data the authors analyze the Rwandan non-farm employment expansion in rural areas and its relation to agricultural productivity. The purpose of this paper is to analyze the factors that determine off-farm work hours in Rwanda, and how farmers’ off-farm employment affects agricultural output. Since production efficiency may depend on off-farm work and off-farm work depend on production efficiency (Lien et al., 2010), both production and off-farm work are endogenous. While controlling for endogeneity, the authors investigate the relationship between off-farm work and agricultural production.

In this paper the authors use a unique panel data set spanning over 26 years originating from household surveys conducted in the northwest and densely populated districts of Rwanda. Econometric estimations are based on a random effects two-stage Tobit model to control for endogeneity.

The study confirms theoretical and empirical findings from other developing countries that off-farm employment is one of the essential conditions for having an economically viable agricultural business and vice versa.

The study is carried out in only one district of Rwanda. Even though most rural areas in Rwanda have similar features the findings cannot necessarily be generalized for the entire country of Rwanda. As in any study, the raw data set suffer from a number of shortcomings which cannot be fully eliminated by the econometric estimation, but this is a new data set which has the best data available for this research question in Rwanda.

The authors can conclude that there are synergy effects of investing government resources into both on-farm and off-farm employment expansions. Thus, in Rwanda on-farm investments can actually partly contribute to a future natural smooth transformation to more off-farm total output and productivity and vice versa. Though there are still limited off-farm employment opportunities in the studied area, there are considerable potentials to generate income and increase agricultural production through the purchase of additional inputs.

The findings imply that a favorable business climate for off-farm businesses creates spill-over effects which enhance the smallholder farmers’ opportunities to survive, generate wealth, create employment and in effect reduce poverty.

From the best of the authors’ knowledge, similar studies have not been conducted in Rwanda, nor elsewhere with this type of data set. The findings provide original insights regarding off-farm and agricultural relationships in rural areas under dense population pressure. The results provide some indications that off-farm employment in developing countries (such as Rwanda) is one of the essential conditions for having an economically viable agricultural business and vice versa. The second wave of data was collected by the authors and was used solely for the purpose of this paper.

The purpose of this paper is to investigate the current state of the single European labor market (SELM), its related risks and opportunities, and identify useful measures for reaching the goal of increased European labor mobility.

The authors conducted an online survey among European labor market experts (IZA research and policy fellows) on the current state of the SELM, its determinants, and the role of the Great Recession. The authors evaluate the data using descriptive and regression-based methods.

The experts agree on the SELM’s importance, especially for larger economic welfare, but are not convinced that it has been achieved. To enhance labor mobility across Europe, the respondents identify key factors such as recognizing professional qualifications more efficiently, harmonizing social security systems, and knowing several languages. Moreover, at least 50 percent of the respondents consider positive attitudes – by policy makers and citizens alike – toward free mobility to be important to enhance labor mobility.

The IZA Expert Opinion Survey presents a unique opportunity to learn how numerous experts think about the important issue of European labor market integration and moreover constitutes a valuable extension to public opinion surveys on related topics. This survey’s findings provide a sophisticated basis for a discussion about policy options regarding the SELM.

In the first part, the author sums up general features of his model of holographic associative memory, consisting of a short‐time component and the associative layer, bearer of permanent records, realized as changes of synaptic weights according to a suitable algorithm. In living systems, some means are necessary to safeguard the memory from overflooding with irrelevant information. It is shown that the selection of biologically important patterns and events may be based upon the system of pre‐determined unconditioned reflexes. One possible way of introducing this principle is by allowing the unconditioned stimulus to activate the mechanism of synaptic changes so that the preceding event, still kept in the short‐time memory, may be recorded permanently, while other patterns and events occurring in the inactivated state are remembered only after numerous repetitions.

Knowledge management (KM) is widely adopted by organisations to improve their performance and make informed decisions. Prior research has confirmed that Information Systems (IS) play a critical role in effective KM. The purpose of this study is to examine the existing literature on the role of cloud-based KM systems (C-KMS) in small- and medium-sized enterprise (SMEs) by understanding its impact on the five KM processes: knowledge acquisition, creation, storage, sharing and usage.

This study conducted a systematic literature review by examining 133 journal articles and 24 conference papers from 2010 to 2021 on the role of cloud computing in KM for SMEs.

This study revealed that there are numerous empirical analyses on KM processes and tools in SMEs; however, only few studies demonstrate how the whole gamut of KM processes can adopt cloud computing in SMEs. Therefore, SMEs are ineffective at KM with limited IS intervention. This paper offers a proposition on how C-KMS can impact all five KM process, thereby increasing its effectiveness of KM in SMEs. This study analysed the benefits of C-KMS that brings to SMEs in terms of availability, scalability, reliability, security and cost.

This systematic review is restricted to certain databases (ScienceDirect, Sage journals, Scopus and Emerald Insight) and specific IS conference proceedings to source articles. The selection of search criteria and time frame is based on this study’s assessment and choice. This study adds value to our understanding of the role of KM in SMEs, and it reinforces the role of cloud computing in effectively managing knowledge in SMEs. The proposal of C-KMS for the enhancement of KM has significant implications for SMEs to effectively use knowledge for their survival and superior performance.

This study suggests three practical implications. First, adopting and using C-KMS provide a strong foundation to manage knowledge for SMEs in a cost-effective way. Second, C-KMS improves the effectiveness of KM by increasing availability of knowledge artifacts, which in turn aids SMEs’ growth. Third, C-KMS is useful to codify SME’s knowledge, and accordingly supports employees to acquire and use knowledge based on their requirements.

This study discussed C-KMS with contemporary social issues, such as the COVID-19 pandemic challenges for SMEs and demonstrated how C-KMS can support SMEs to handle such crises by managing knowledge effectively.

This research highlights the importance of the implementation of a C-KMS for the enhancement of KM in SMEs. The review provides empirical evidence on the challenges faced by SMEs regarding KM, as they often only have enough resources to focus on a single KM process, predominantly knowledge sharing. Consequently, a holistic approach to KM cannot be realised by SMEs. In this context, the findings of this study offer theoretical and practical insights into the role of cloud computing by addressing the challenges of KM in SMEs.

This research study focuses on investigating the seismic performance of non-straight beams in steel structures and exploring the mechanism by which plastic hinges are formed within these beams. The findings contribute to the understanding of their behaviour under seismic loads and offer insights into their potential for enhancing the lateral resistance of the structure. The abstract of the study highlights the significance of corners in structural plans, where non-coaxial columns, diagonal elements or beams deviating from a straight path are commonly observed. Typically, these non-straight beams are connected to the columns using pinned connections, despite their unknown seismic behaviour. Recognizing the importance of generating plastic hinges in special moment resisting frames and the lack of previous research on the involvement of these non-straight beams, this study aims to address this knowledge gap.

This study examines the seismic behaviour and plastic hinge formation of non-straight beams in steel structures. Non-straight beams are beams that connect non-coaxial columns and diagonal elements, or deviate from a linear path. They are usually pinned to the columns, and their seismic contribution is unknown. A critical case with a 12-m non-straight beam is analysed using Abaqus software. Different models are created with varying cross-section shapes and connection types between the non-straight beams. The models are subjected to lateral monotonic and cyclic loads in one direction. The results show that non-straight beams increase the lateral stiffness, strength and energy dissipation of the models compared to disconnected beams that act as two cantilevers.

The analysis results reveal several key findings. The inclusion of non-straight beams in the models leads to increased lateral stiffness, strength and energy dissipation compared to the scenario where the beams are disconnected and act as two cantilever beams. Plastic hinges are formed at both ends of the non-straight beam when a 3% drift is reached, contributing to energy damping and introducing plasticity into the structure. These results strongly suggest that non-straight beams play a significant role in enhancing the lateral resistance of the system. Based on the seismic analysis results, this study recommends the utilization of non-straight beams in special moment frames due to the formation of plastic hinges within these beams and their effective participation in resisting lateral seismic loads. This research fills a critical gap in understanding the behaviour of non-straight beams and provides valuable insights for structural engineers involved in the design and analysis of steel structures.

The authors believe that this research will greatly contribute to the knowledge and understanding of the seismic performance of non-straight beams in steel structures.