Książki na temat „Group decision making – graphic methods”

This chapter discusses the notion that the mass media influence political attitudes and behaviors by activating group identities and thus stoking group conflicts. Three domains of influence are examined: (1) group cues altering perceptions of group members by changing beliefs, stereotypes, or attitudes; (2) mass media altering the salience of preexisting beliefs and stereotypes; and (3) group cues triggering emotions that lead to changes in information processing and the willingness to take political risks. The chapter argues that while mass media effects are often subtle and require sophisticated methods to detect, they can under certain circumstances powerfully influence information processing and decision making.

Project teams are the rule rather than the exception in today's organizations. But thanks to the pressure of performance goals, conflicting agendas, and political jockeying, few teams make superior decisions consistently. Instead, team members communicate poorly or not at all, avoid provocative discussion, occasionally stab each other in the back, or in many other ways forget that their job is to make decisions that lead the company forward. Jana Kemp, an authority on team decision making, saves the day by offering tested methods and tools team members and their leaders can use to ratchet up the performance level. That not only makes team projects more successful—it makes work fun. Kemp argues that the way to make good decisions is to have an expansive group conversation that leads to sound decisions and swift execution. Sounds simple, but in most organizations, making a decision and seeing it through can become an exercise in frustration for managers and employees alike. At one end of the spectrum are command-and-control decisions, proclaimed from on-high and implemented through the ranks. Without input or buy-in from those affected by the decision, this approach can lead to resentment and backlash. At the other end are purely collaborative, consensus decisions that often lead to inoffensive, weak choices and sub-par results.

Applying strategic approaches to both interest groups as amici curiae and state supreme court justices, Comparato investigates the influence of judicial retention methods and the ballot initiative on their behaivor. The results demonstrate that they behave strategically, attempting to achieve their goals within the confines of the institutional setting. What impact do state-level institutions have on the behavior of state supreme court justices and interest groups participating as amici curiae in those courts? Specifically, is the information provided by interest groups conditioned on the judicial retention system, or whether the state uses the ballot initiative, and does that information impact the decision-making process of the justices? Comparato answers these questions by employing strategic theories of judicial and group behavior, with groups motivated by the attainment of policy and group maintenance, and state supreme court justices motivated by policy and the continued maintenance of their position on the court. He argues that the information provided in amicus curiae briefs allows both groups and state supreme court justices to achieve their respective goals. In order to answer these questions, Comparto analyzes litigant and amicus curiae briefs as well as judicial decisions from seven state supreme courts to evaluate the effects of state-level institutions on the types of information provided to state supreme court justices, and how those justices respond to that information. The results suggest that interest groups do behave strategically, providing information to justices that they believe will be useful in helping the justices retain their seats on the court and achieve their desired policy outcomes. There is also support for the expectation that the information provided by litigants and amici, as well as the retention method, have a direct impact on the decision-making of justices.

Accidental hypothermia is defined as a core temperature of <35°C and is uncommon. It may present in any age group at any time of the year. Hypothermia may be primary, where the cold injury is the major pathology, or secondary where patients develop hypothermia incidental to another illness. Since the severely cold patient may be in cardiac arrest, areflexic, and in coma, decision making regarding treatment, its initiation, and continuation, may be difficult. Hypothermia is classified into mild (33–35°C), moderate (28–33°C) and severe (<28°C), but these are not distinct clinical syndromes. A more recent classification into stages has emerged from alpine medicine along with a treatment algorithm based on it. Many pathophysiogical changes are due to reduced enzyme action. Clinical features include changes in higher cerebral functions with bizarre behaviour progressing to coma. In the circulation initial tachycardia and hypertension (‘cold stress’) are replaced, as the patient cools, with worsening hypotension and bradycardia and, eventually, ventricular fibrillation and asystole. Rewarming methods are classified as passive or active and the latter subdivided into external, core, and extracorporeal. Active warming should be considered for patients with a temperature of 32°C or lower. Peritoneal lavage has the advantage of warming the liver directly and also the heart through the diaphragm. Cardiopulmonary bypass is the extracorporeal method with most experience, but the advent of extracorporeal membrane oxygenation has the advantage of portability.

A lively, personalized account incorporating objective analysis and solid information accumulated over 42 years, this book presents a graphic picture of the construction industry from an insider's point of view. The volume focuses on the culture of construction workers, the management style of contractors, and the structural and organizational nature of the industry. It considers such unique features of construction as its craft-oriented technology, decentralized decision-making by workers on the job site, and non-bureaucratic methods of field supervision. Using the research of others, government publications, and his own intimate experience in the industry, the author provides an insightful view of a unique industry in modern America. The book opens with an overview of the industry, illustrating how construction is organized, the craft breakdown, and the cultural values of the crafts. It then considers such topics as workers' job satisfaction, craft organization of the work, and the dangerous nature of construction. Separate chapters are devoted to women construction workers, a recent phenomenon in the industry, and to minorities and the role of affirmative action. In conclusion, the book argues that construction is significant both as a major industry and as a model for organizing work to produce worker satisfaction.

Hard coal mining is characterised by features that pose numerous challenges to its current operations and cause strategic and operational problems in planning its development. The most important of these include the high capital intensity of mining investment projects and the dynamically changing environment in which the sector operates, while the long-term role of the sector is dependent on factors originating at both national and international level. At the same time, the conditions for coal mining are deteriorating, the resources more readily available in active mines are being exhausted, mining depths are increasing, temperature levels in pits are rising, transport routes for staff and materials are getting longer, effective working time is decreasing, natural hazards are increasing, and seams with an increasing content of waste rock are being mined. The mining industry is currently in a very difficult situation, both in technical (mining) and economic terms. It cannot be ignored, however, that the difficult financial situation of Polish mining companies is largely exacerbated by their high operating costs. The cost of obtaining coal and its price are two key elements that determine the level of efficiency of Polish mines. This situation could be improved by streamlining the planning processes. This would involve striving for production planning that is as predictable as possible and, on the other hand, economically efficient. In this respect, it is helpful to plan the production from operating longwalls with full awareness of the complexity of geological and mining conditions and the resulting economic consequences. The constraints on increasing the efficiency of the mining process are due to the technical potential of the mining process, organisational factors and, above all, geological and mining conditions. The main objective of the monograph is to identify relations between geological and mining parameters and the level of longwall mining costs, and their daily output. In view of the above, it was assumed that it was possible to present the relationship between the costs of longwall mining and the daily coal output from a longwall as a function of onerous geological and mining factors. The monograph presents two models of onerous geological and mining conditions, including natural hazards, deposit (seam) parameters, mining (technical) parameters and environmental factors. The models were used to calculate two onerousness indicators, Wue and WUt, which synthetically define the level of impact of onerous geological and mining conditions on the mining process in relation to: —— operating costs at longwall faces – indicator WUe, —— daily longwall mining output – indicator WUt. In the next research step, the analysis of direct relationships of selected geological and mining factors with longwall costs and the mining output level was conducted. For this purpose, two statistical models were built for the following dependent variables: unit operating cost (Model 1) and daily longwall mining output (Model 2). The models served two additional sub-objectives: interpretation of the influence of independent variables on dependent variables and point forecasting. The models were also used for forecasting purposes. Statistical models were built on the basis of historical production results of selected seven Polish mines. On the basis of variability of geological and mining conditions at 120 longwalls, the influence of individual parameters on longwall mining between 2010 and 2019 was determined. The identified relationships made it possible to formulate numerical forecast of unit production cost and daily longwall mining output in relation to the level of expected onerousness. The projection period was assumed to be 2020–2030. On this basis, an opinion was formulated on the forecast of the expected unit production costs and the output of the 259 longwalls planned to be mined at these mines. A procedure scheme was developed using the following methods: 1) Analytic Hierarchy Process (AHP) – mathematical multi-criteria decision-making method, 2) comparative multivariate analysis, 3) regression analysis, 4) Monte Carlo simulation. The utilitarian purpose of the monograph is to provide the research community with the concept of building models that can be used to solve real decision-making problems during longwall planning in hard coal mines. The layout of the monograph, consisting of an introduction, eight main sections and a conclusion, follows the objectives set out above. Section One presents the methodology used to assess the impact of onerous geological and mining conditions on the mining process. Multi-Criteria Decision Analysis (MCDA) is reviewed and basic definitions used in the following part of the paper are introduced. The section includes a description of AHP which was used in the presented analysis. Individual factors resulting from natural hazards, from the geological structure of the deposit (seam), from limitations caused by technical requirements, from the impact of mining on the environment, which affect the mining process, are described exhaustively in Section Two. Sections Three and Four present the construction of two hierarchical models of geological and mining conditions onerousness: the first in the context of extraction costs and the second in relation to daily longwall mining. The procedure for valuing the importance of their components by a group of experts (pairwise comparison of criteria and sub-criteria on the basis of Saaty’s 9-point comparison scale) is presented. The AHP method is very sensitive to even small changes in the value of the comparison matrix. In order to determine the stability of the valuation of both onerousness models, a sensitivity analysis was carried out, which is described in detail in Section Five. Section Six is devoted to the issue of constructing aggregate indices, WUe and WUt, which synthetically measure the impact of onerous geological and mining conditions on the mining process in individual longwalls and allow for a linear ordering of longwalls according to increasing levels of onerousness. Section Seven opens the research part of the work, which analyses the results of the developed models and indicators in individual mines. A detailed analysis is presented of the assessment of the impact of onerous mining conditions on mining costs in selected seams of the analysed mines, and in the case of the impact of onerous mining on daily longwall mining output, the variability of this process in individual fields (lots) of the mines is characterised. Section Eight presents the regression equations for the dependence of the costs and level of extraction on the aggregated onerousness indicators, WUe and WUt. The regression models f(KJC_N) and f(W) developed in this way are used to forecast the unit mining costs and daily output of the designed longwalls in the context of diversified geological and mining conditions. The use of regression models is of great practical importance. It makes it possible to approximate unit costs and daily output for newly designed longwall workings. The use of this knowledge may significantly improve the quality of planning processes and the effectiveness of the mining process.