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In order to reduce avoidably lengthy duration required to test highly reliable products under usage stress, accelerated life test sampling plans (ALTSPs) are employed. This paper aims to build a decision model for obtaining optimal sampling plan under accelerated life test setting using Type-I hybrid censoring scheme for products covered under warranty.

The primary decision model proposed in this paper determines ALTSP by minimizing the relevant costs involved. To arrive at the decision model, the Fisher information matrix for Type-I hybrid censoring scheme under accelerated life test setting is derived. The optimal solution is attained by utilizing appropriate techniques following a nonlinear constrained optimization approach. As a special case, ALTSP for Type-I censoring is obtained using the same approach. ALTSP under Type-I hybrid censoring using the variance minimization approach is also derived.

On comparing the optimal results obtained using the above mentioned approaches, it is found that the cost minimization approach does better in reducing the total cost incurred. Results also show that the proposed ALTSP model under cost function setting has considerably lower expected testing time. Interesting findings from the sensitivity analysis conducted using a newly introduced failure dataset pertaining to locomotive controls are highlighted.

The research introduces a model to design optimum ALTSP for Type-I hybrid censoring scheme. The practical viability of the model makes it valuable for real-life situations. The practical application of the proposed model is exemplified using a real-life case.

Children experience toxic stress if there is pronounced activation of their stress-response systems, in situations in which they do not have stable caregiving. Due to their exposure to multiple poverty-related risks, African American children may be more susceptible to exposure to toxic stress. Toxic stress affects young children’s brain and neurophysiologic functioning, which leads to a wide range of deleterious health, developmental, and mental health outcomes. Given the benefits of early care and education (ECE) for African American young children, ECE may represent a compensating experience for this group of children, and promote their positive development.

The overall goal of science is to build a valid and reliable body of knowledge about the functioning of the world and how applying that knowledge can change it. As personnel and human resources management researchers, we aim to contribute to the respective bodies of knowledge to provide both employers and employees with a workable foundation to help with those problems they are confronted with. However, what research on research has consistently demonstrated is that the scientific endeavor possesses existential issues including a substantial lack of (a) solid theory, (b) replicability, (c) reproducibility, (d) proper and generalizable samples, (e) sufficient quality control (i.e., peer review), (f) robust and trustworthy statistical results, (g) availability of research, and (h) sufficient practical implications. In this chapter, we first sing a song of sorrow regarding the current state of the social sciences in general and personnel and human resources management specifically. Then, we investigate potential grievances that might have led to it (i.e., questionable research practices, misplaced incentives), only to end with a verse of hope by outlining an avenue for betterment (i.e., open science and policy changes at multiple levels).

This study aims to systematically review a total of 513 papers using experimental methods in hospitality and tourism research and then proposed new recommendations to address approaches that have been confusingly adopted or ignored in the current literature.

An extensive literature review was conducted. Together with critiques on previous studies, four recommendations were proposed to help carry out future experimental studies using more rigorous and exact approaches.

Multiple experimental studies can provide stronger evidence for theoretical arguments. Demonstration of the theoretical underlying mechanism using evidence based on mediation and moderating methods is required. The adoption of complementary methods can mitigate the generic weaknesses of experimental methods. In addition, enhancement of the realism of experiments is required to obtain stronger empirical evidence with internal and external validity.

This study proposes four constructive recommendations which help researchers to conduct future experimental design studies correctly. Valid and exact research outcomes can help practitioners to carry out new useful marketing strategies.

After reviewing 513 previous papers that used experimental design in the hospitality and tourism fields, this study proposes four new recommendations to facilitate a better understanding of experimental design. The original and innovative nature of this study will help future investigations to adopt more accurate statistical approaches.

This paper examines the communication modalities on Twitter to broadcast content to citizens and measures the effectiveness of the posted content in activating the citizens’ political participation proposing an retweetability rate.

Through content analysis of the European Commissioners’ posts, this paper identifies the most used communication modalities to broadcast content to the citizens. A retweetability rate is proposed to measure the effectiveness of the posted content in activating the political citizens’ engagement. The methodology is applied to the tweets posted by European Commissioners, who are currently facing democracy legitimation issues and Euroscepticism.

Empirical results show that Twitter is not fully used yet as a citizen engagement tool. However, the paper highlights the potentiality of Twitter to broadcast contents of value and build a relationship of citizens and institutions.

Measuring citizen engagement based on the posted messages can help the institutions to evaluate the effectiveness of the posted social media content. Moreover, the paper gives suggestions regarding how governments might implement social media content capable of fostering a dialogic communication with citizens.

A measurement of citizen engagement permits the identification of which kinds of public communication stimulate the engagement and favor a closer bond between citizens and public institutions.

I survey applications of Markov switching models to the asset pricing and portfolio choice literatures. In particular, I discuss the potential that Markov switching models have to fit financial time series and at the same time provide powerful tools to test hypotheses formulated in the light of financial theories, and to generate positive economic value, as measured by risk-adjusted performances, in dynamic asset allocation applications. The chapter also reviews the role of Markov switching dynamics in modern asset pricing models in which the no-arbitrage principle is used to characterize the properties of the fundamental pricing measure in the presence of regimes.

This paper aims to identify user-centred facilities performance attributes of higher education buildings and how they can be used to evaluate individual learning spaces. These attributes are then consolidated for developing a post-occupancy evaluation (POE) framework in this context.

A systematic review of the literature on the POE of higher education buildings is conducted.

This study identifies 36 facility performance attributes in higher education buildings, which can be categorised into four dimensions: ambient; spatial; technology; and building support and services requirements. These facility performance attributes need to meet user requirements to achieve satisfactory feedback. It is also important to note that user requirements differ from one learning space to another; thus, it is essential to consider the characteristics of individual learning spaces.

The proposed evaluation framework is context-based and may not be suitable to evaluate other types of buildings. It may be further extended and enhanced to meet other facility management evaluation needs.

The POE framework developed in this research can be used to generate facilities management analytic to inform future design and improve existing higher education facilities.

This research has developed a holistic POE framework tool to meet user requirements in higher education buildings.

The authors present an exploratory study on the effectiveness of in-store marketing communication appeals via digital signage applying the construal level theory (CLT) in a field experiment. According to this theory, the authors hypothesize that shoppers will on the one hand respond more favorably to messages focusing on the desirability of the offering, when they are further distanced from the actual purchase decision. On the other hand, the authors expect more favorable responses toward messages containing feasibility appeals, positioned closer by to the purchase decision. The purpose of this paper is to determine appropriate location-based content for in-store proximity marketing.

A field experiment was conducted in a Belgian coffee bar, examining temporal distance effects in a natural retail/service environment. A 2×2 between-subjects experimental design is implemented (i.e. low vs high temporal distance×concrete/cost vs abstract/brand-oriented appeal), examining the impact on marketing communication effectiveness.

Overall, the authors find some initial support for CLT on effectiveness measures regarding purchase intentions and actual purchase, but not in terms of self-reported noticing of the screen and the ad, nor in terms of (un)aided ad recall.

This experiment is a pilot study and such finds itself confronted with a limited number of observations.

The study is among the first to examine how message content (beyond price promotion) can be adapted to in-store locations.

Due to discontent arising from the application of Modernism's totalitarian and homogenising logic to house design, recent research has concentrated on differences between cultures, societies and ethnic groups to the extent that today's students of architecture have difficulty finding sources which point to any universally valid values and preferences adopted by contemporary populations. In this study seventeen major design principles stemming from man-environment relationships, such as privacy, territoriality, personal space, backstage behaviour, orientation, and so on, as deduced from Turkish traditional houses, are investigated in terms of similarities among cultures. Samples of contemporary houses are selected from Turkey and elsewhere. Between local and international house designs full matches are depicted and verified by way of statistical analyses across fourteen items, such as living space subdivisions for guests and family, indirect access to the house (modulation), multi-purpose living space subdivisions (hierarchical living space), individualized bathrooms in bedrooms, independent family rooms, semi-closed spaces on the first floor, larger fenestration on upper floors as opposed to opacity of ground floors, segregated garden space, powerful demarcation of the garden space, orientation toward the house's own territory, bathrooms being situated in night time domains, differentiated status of spaces, multiple uses for stair landings (such as for hiding places for goods). Only three items showed some variance: closed balconies on upper floors were local, and semi-open spaces on ground floors were international tendencies. The practice of allowing direct access from the main entrance to a vertical circulation area was also predominantly a local choice.