A particular class of continuous-time stochastic growth models

This paper generalizes to uncertaintly the neoclassical one-sector model by transforming the basic differential equation on the capital labor ratio into a “stochastic” differential equation. The capital-labor ratio and related economic variables become random variables whose probability distributions vary with time, and the paper is focused on the existence of a steady state denfined by the (probabilistic) stationarity of these variables. An application of the results is given for a specific example with a Cobb-Douglas production function and uncertainty on the saving coefficient, the labor-force rate of growth, and the capital depreciation rate.     

Stability analysis of an effluent charge and the ‘polluters pay’ principle

In a pure exchange economy with two private commodities and one collective externality, a non-tâtonnement process is formulated, which yields a rule for adjusting an effluent charge of the Pigovian type from the level zero (at a laissez-faire equilibrium) up to a level that sustains an optimum. Besides convergence (Theorem 3) and monotonous decrease of the externality (Theorem 2) along a continuous path of price equilibria (Theorem 1), the paper analyses the distributional implications of alternative redistribution schemes for the proceeds of the charge. Various interpretations of the ‘polluters pay’ principle are discussed in conjunction with property rights.     

Using Causal Mapping with Group Support Systems to Elicit an Understanding of Failure in Complex Projects: Some Implications for Organizational Research

This paper reflects upon the use of causal mapping supported by a Group Support System (GSS) in a particular legal setting. The mapping method and GSS tool was used for the forensic analysis of eight major engineering and construction projects where the contractor intended to claim significant compensation (typically in excess of $20m). Necessarily detailed records were kept of every aspect of the analyses and processes adopted. This paper is an examination and reflection upon analysis of these records, with particular attention to the process. The task of capturing the way in which participants (witnesses) in a project ‘make sense’ of a cost and time overrun is an important aspect of forensic analysis as they have an experience based perspective, that has often involved dealing with high levels of complexity as projects move from planned order through to what they describe as “absolute chaos”. In addition the requirement to account for, and be held responsible for, behaviors that that may in retrospect be seen as incompetent raises interesting issues in determining the validity of the data capture and analyses. Moreover, participants’ views regarding the complex causality of outcomes, reflected in the causal map, are tested through the use of a simulation model replicating the causal map. The implications of this approach as a research method for undertaking organizational research are thus considered by drawing upon experiences of using the approach to develop the case for litigation in several disruption and delay claims. In particular the paper addresses the issues related to defensiveness of participants, anonymity, accessing multiple perspectives in a group setting, organizational learning and the ‘changing of mind’ of participants, and developing an organizational memory.     

GSS for Multi-Organizational Collaboration: Reflections on Process and Content

Multi-organizational collaboration has become the norm for modern organizations as they seek to survive and prosper in increasingly turbulent times. These collaborations can take many forms, but face problems due to different management styles, different cultures, and different operating modes of the participant organizations. These differences usually cause difficulties for the multi-organizational teams that are set up to make the collaboration operational. Group Support Systems (GSSs) is one possible way of supporting these multi-organization collaboration teams (MCTs). This paper builds and describes a conceptual framework that highlights the critical characteristics of these teams and how GSS might support their activities. The framework is based on a detailed analysis of three case studies using three different GSSs.     

The Difficult but Necessary Task of Developing a Specific Project Team Research Agenda

Project teams are central to organizations everywhere; however, there is a knowledge gap between project management scholars on the one hand and organizational behavior and industrial–organizational (OB/IO) scholars on the other. This gap seriously impedes the advancement of knowledge, because scholars from both fields have not leveraged each other's considerable knowledge and might be relying on outdated models and evidence to study project team phenomena, manage project teams, or develop university curricula. A call is made for interdisciplinary research projects devoted specifically to developing a research agenda on project teams.     

Workers’ tenure and firm productivity: New evidence from matched employer-employee panel data

Using rich longitudinal matched employer-employee data on Belgian firms, we explore the impact of workers’ tenure on firm productivity. To do so, we estimate production functions augmented with firm-level measures of tenure. We deal with the endogeneity of standard inputs and tenure, which arises from unobserved firm heterogeneity and reverse causality, by applying a modified version of Ackerberg et al.’s (2015) control function method, which explicitly removes firm fixed effects. Consistently with recent theoretical predictions, our analyses point to positive, but decreasing, returns to tenure. We also find that the impact differs widely across several firm dimensions. Tenure is particularly beneficial for productivity in contexts characterized by a certain degree of routineness and low job complexity. Along the same lines, our findings indicate that tenure exerts stronger positive impacts in industrial and capital-intensive firms, as well as in firms less reliant on ICT-intensive and knowledge-intensive processes.     

COLLECTIVELY GARDENING THE URBAN PUBLIC SPACE IN MEXICO CITY: When Informal Practices Interact with the State

In recent years, a growing number of citizen-led gardens have appeared in the urban public spaces of large cities across the world. While many of these projects are initially launched informally without any support from the state, they gradually become integrated into the social fabric of the city. To understand the evolution of the formal–informal boundaries of the practice, we argue that we should be paying attention to the specific institutional contexts that frame gardeners’ interactions with public authorities. Drawing from a study of citizen-led gardens in Mexico City, we show that informal urban gardening becomes a disconnected-from-the-state practice. On the one hand, the Mexico City government has shown a growing interest in regulating urban agriculture. On the other hand, gardeners are increasingly trying to find their own ways to formalize and perennate their practice. We suggest that this disconnection between gardeners and the state is best explained by the weakness of the institutional context in which their interactions take place. A top-down policymaking process, along with the incapacity and unwillingness of the multi-leveled city government to implement policies effectively, reinforces norms of mistrust and generates low expectations among gardeners as they interact with local authorities.     

Empowering health care consumers in the era of Internet of Things

The Internet of Things (IoT) is emerging as a significant development in information technology that aims to link the digital world with the real world to improve human life. IoT refers to digital tools collecting data and providing hyper-personalized information to its users. With the rapid integration of the IoT in the healthcare sector (HIoT), it has been presumed that HIoT devices have an empowering effect on patients; however, this has yet to be investigated. Furthermore, the literature reveals a lack of consistency regarding the definition of patient empowerment. This study aims to fill these gaps and investigates whether HIoT systems increase user empowerment for individuals suffering from chronic illnesses. It also examines how empowerment is defined for HIoT users. To answer these two research questions, we conducted a qualitative research study consisting of 20 semi-structured, in-depth interviews carried out with individuals suffering from Type 1 diabetes (T1D). The interviews were transcribed and content analysis was conducted on the data. The study enabled us to examine whether and how the HIoT triggered empowerment for patients suffering from T1D. Findings reveal four main dimensions of empowerment for HIoT users: (1) self-efficacy, (2) patient control, (3) knowledge development and (4) participation in the decision-making process along with the doctor. Results also highlight that participants feel empowered by personal acceptance of living with their health condition and social support. In addition, the analysis led to the identification of the barriers which need to be overcome to ensure that HloT systems improve patient empowerment.