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This paper aims to introduce a novel method for the analysis of open cell porous components fabricated by laser-based powder bed metal additive manufacturing (AM) for the purpose of quality control. This method uses photogrammetric analysis, the extraction of geometric information from an image through the use of algorithms. By applying this technique to porous AM components, a rapid, low-cost inspection of geometric properties such as material thickness and pore size is achieved. Such measurements take on greater importance, as the production of porous additive manufactured orthopaedic devices increases in number, causing other, slower and more expensive methods of analysis to become impractical.

Here the development of the photogrammetric method is discussed and compared to standard techniques including scanning electron microscopy, micro computed tomography scanning and the recently developed focus variation (FV) imaging. The system is also validated against test graticules and simple wire geometries of known size, prior to the more complex orthopaedic structures.

The photogrammetric method shows an ability to analyse the variability in build fidelity of AM porous structures for use in inspection purposes to compare component properties. While measured values for material thickness and pore size differed from those of other techniques, the new photogrammetric technique demonstrated a low deviation when repeating measurements, and was able to analyse components at a much faster rate and lower cost than the competing systems, with less requirement for specific expertise or training.

The advantages demonstrated by the image-based technique described indicate the system to be suitable for implementation as a means of in-line process control for quality and inspection applications, particularly for high-volume production where existing methods would be impractical.

Understanding farmers’ perceptions of how the climate is changing is vital to anticipating its impacts. Farmers are known to take appropriate steps to adapt only when they perceive change to be taking place. This study aims to analyse how African indigenous vegetable (AIV) farmers perceive climate change in three different agro-climatic zones (ACZs) in Kenya, identify the main differences in historical seasonal and annual rainfall and temperature trends between the zones, discuss differences in farmers’ perceptions and historical trends and analyse the impact of these perceived changes and trends on yields, weeds, pests and disease infestation of AIVs.

Data collection was undertaken in focus group discussions (FGD) (N = 211) and during interviews with individual farmers (N = 269). The Mann–Kendall test and regression were applied for trend analysis of time series data (1980-2014). Analysis of variance and least significant difference were used to test for differences in mean rainfall data, while a chi-square test examined the association between farmer perceptions and ACZs. Coefficient of variation expressed as a percentage was used to show variability in mean annual and seasonal rainfall between the zones.

Farmers perceived that higher temperatures, decreased rainfall, late onset and early retreat of rain, erratic rainfall patterns and frequent dry spells were increasing the incidences of droughts and floods. The chi-square results showed a significant relationship between some of these perceptions and ACZs. Meteorological data provided some evidence to support farmers’ perceptions of changing rainfall. No trend was detected in mean annual rainfall, but a significant increase was recorded in the semi-humid zone. A decreasing maximum temperature was noted in the semi-humid zone, but otherwise, an overall increase was detected. There were highly significant differences in mean annual rainfall between the zones. Farmers perceived reduced yields and changes in pest infestation and diseases in some AIVs to be prevalent in the dry season. This study’s findings provide a basis for local and timely institutional changes, which could certainly help in reducing the adverse effects of climate change.

This is an original research paper and the historical trends, farmers’ perceptions and effects of climate change on AIV production documented in this paper may also be representative of other ACZs in Kenya.

The purpose of this paper is to explore the influence of project management offices (PMO) in non-governmental organizations (NGOs), in fundraising linked to projects, under the theoretical lens of the resource-based view.

Through a longitudinal analysis ex post facto study in a non-profit civil association, the authors examined by Mann-Whitney’s U tests the results before (2003-2008) and after (2009-2014) PMO implementation, to check if the office moderated the relationship between project management and fundraising for projects.

Mann-Whitney’s U tests showed that PMO had, in those periods, a statistically significant influence in increasing the number of projects and decreasing the mean value of their budgets (p-value<0.05).

Despite the wide range of studies on the contribution of PMOs to internal project management, there is a lack of empirical evidence on their moderation capacity, especially in NGOs. To fill this research gap, this study investigates the moderating role of PMO in NGOs, by examining their performance on fundraising processes, to contribute to a better understanding of potential PMO effects, particularly as a moderator of the relationship between project management and projects’ fundraising.

Reality breakdowns generate reflexivity and awareness of the constructed nature of social reality. These pivotal moments can motivate institutional inhabitants to either modify their social worlds or reaffirm the status quo. Thus, reality breakdowns are the initial points at which actors can conceive of new possibilities for institutional arrangements and initiate change processes to realize them. Studying reality breakdowns enables scholars to understand not just how institutional change occurs, but also why it does or does not do so. In this paper, we investigate how institutional inhabitants responded to a reality breakdown that occurred during our ethnography of collegial governance in a large North American university that was undergoing a strategic change initiative. Our findings suggest that there is a consequential process following reality breakdowns whereby institutional inhabitants construct the severity of these events. In our context, institutional inhabitants first attempted to restore order to their social world by reaffirming the status quo; when their efforts failed, they began to formulate alternative possibilities. Simultaneously, they engaged in a distributed sensemaking process whereby they diminished and reoriented necessary changes, ultimately inhibiting the formulation of these new possibilities. Our findings confirm reality breakdowns and institutional awareness as potential drivers of institutional change and complicate our understanding of antecedent microprocesses that may forestall the initiation of change efforts.

This study analyzes what type of influencer – microcelebrity or microinfluencer – is best suited to promoting healthy food brands and how that influence depends on consumers’ healthy lifestyles.

An empirical study with a real healthy food brand was developed in which three real influencers from Instagram collaborated and posted a story showing the company’s products. A total of 148 individuals participated in the study. The proposed model was tested using the PROCESS macro.

Drawing on the celebrity endorsement literature and the meaning transfer model, this study proposes that microcelebrities’ and microinfluencers’ influence on consumers’ perception and behavior in terms of post relevance, brand attitude and purchase intention toward healthy food brands depends on the consumers’ healthy lifestyle. Thus, microcelebrities have more influence on individuals with unhealthy lifestyles, while microinfluencers have more influence on individuals that pursue a healthy lifestyle.

It is one of the first studies to examine the different roles of microinfluencers versus microcelebrities in promoting consumers’ attitudes and behaviors toward healthy food brands. In addition, this is one of the few studies to show a higher effect of microcelebrities over microinfluencers.

本研究擬探討是哪類型的網絡名人 - 微名人或微素人- 最為適合去推廣健康食品商標; 研究亦擬探討這些網絡名人的影響會如何取決於消費者健康的生活方式。

研究人員設計了一個觀察研究, 他們安排三位真實的即時電報(lnstagram) 網路紅人一起合作, 各人分別在自己的平台上發帖, 內容是關於一間公司產品的故事。研究參與者共148人, 研究人員使用 PROCESS macro 來測試他們建議的模型。

研究人員使用有關名人代言的文獻和意義遷移模型, 並以此提出一個建議: 消費者健康的生活方式會決定微名人和微素人會如何影響消費者的看法和行為, 這是就帖子相關性、品牌態度和購買保健食品品牌的打算而言的。研究人員從而發現, 微名人對選擇過不良生活方式的人的影響會較大, 而微素人則對追求健康生活方式的人的影響會較大。

本研究為首個研究, 去探討微素人在推動消費者對保健食品品牌的態度和行為上所扮演不同的角色; 而且, 本研究證實了微名人的影響比微素人的更大, 而找到這研究結果的學術研究為數不多。