A construction of pooling designs with surprisingly high degree of error correction

It is well-known that many famous pooling designs are constructed from mathematical structures by the "containment matrix" method. In this paper, we propose another method and obtain a family of pooling designs with surprisingly high degree of error correction based on a finite set. Given the numbers of items and pools, the error-tolerant property of our designs is much better than that of Macula's designs when the size of the set is large enough

Pooling designs with surprisingly high degree of error correction in a finite vector space

Pooling designs are standard experimental tools in many biotechnical applications. It is well-known that all famous pooling designs are constructed from mathematical structures by the "containment matrix" method. In particular, Macula's designs (resp. Ngo and Du's designs) are constructed by the containment relation of subsets (resp. subspaces) in a finite set (resp. vector space). Recently, we generalized Macula's designs and obtained a family of pooling designs with more high degree of error correction by subsets in a finite set. In this paper, as a generalization of Ngo and Du's designs, we study the corresponding problems in a finite vector space and obtain a family of pooling designs with surprisingly high degree of error correction. Our designs and Ngo and Du's designs have the same number of items and pools, respectively, but the error-tolerant property is much better than that of Ngo and Du's designs, which was given by D'yachkov et al. \cite{DF}, when the dimension of the space is large enough

Pooling spaces associated with finite geometry

AbstractMotivated by the works of Ngo and Du [H. Ngo, D. Du, A survey on combinatorial group testing algorithms with applications to DNA library screening, DIMACS Series in Discrete Mathematics and Theoretical Computer Science 55 (2000) 171–182], the notion of pooling spaces was introduced [T. Huang, C. Weng, Pooling spaces and non-adaptive pooling designs, Discrete Mathematics 282 (2004) 163–169] for a systematic way of constructing pooling designs; note that geometric lattices are among pooling spaces. This paper attempts to draw possible connections from finite geometry and distance regular graphs to pooling spaces: including the projective spaces, the affine spaces, the attenuated spaces, and a few families of geometric lattices associated with the orbits of subspaces under finite classical groups, and associated with d-bounded distance-regular graphs

The paradox of surprise: empirical evidence about surprising gifts received and given by close relations

Purpose This study aims to explore surprising gifts received and given by close relations to identify the variables involved in creating surprising gifts. The analysis of the viewpoints of the giver and the recipient, reflecting their profiles, leads to recommendations for retailers. Design/methodology/approach An exploratory, small-scale, open-ended questionnaire (48 respondents) produces 43 (38) accounts of surprising gifts given (received), informed further by in-depth interviews (eight informants, both givers and recipients of surprising gifts). Findings This study identifies and elaborates on the variables (why, when, what, where, who and how, and their combinations) that define surprising gift giving, from both giver and recipient perspectives. The findings indicate a paradox: even if givers or recipients prefer a surprising gift, they might give or wish for an unsurprising gift to avoid disappointment. Research limitations/implications Further research should confirm the findings using representative samples. Moreover, gender differences in surprising gift giving should be investigated further. Finally, the exact characteristics and properties that make common objects potential candidates for successful surprising gifts should be studied further. Practical implications The discussion has relevant implications for manufacturers and retailers. For example, if recipients are surprised, happy and satisfied, they likely exhibit higher brand recall. The recipient’s (happy versus not happy) emotions also have spillover effects on the giver’s. Thus, retailers should provide assistance in the store and advertise their salespeople as experts who can offer advice about selecting appropriate gifts. The exact characteristics and properties that make common objects potential candidates for successful surprising gifts should be studied further. Originality/value The systematic account of all six variables, not previously analyzed in the literature, provides rich insights into surprising gift giving. The discussion of the study of givers and recipients supplements these insights

Goals and Psychological Accounting

We model how people formulate and evaluate goals to overcome self-control problems. People often attempt to regulate their behavior by evaluating goal-related outcomes separately (in narrow psychological accounts) rather than jointly (in a broad account). To explain this evidence, our theory of endogenous narrow or broad psychological accounts combines insights from the literatures on goals and mental accounting with models of expectations-based reference-dependent preferences. By formulating goals the individual creates expectations that induce reference points for task outcomes. These goal-induced reference points make substandard performance psychologically painful and motivate the individual to stick to his goals. How strong the commitment to goals is depends on the type of psychological account. We provide conditions when it is optimal to evaluate goals in narrow accounts. The key intuition is that broad accounts make decisions or risks in different tasks substitutes and thereby create incentives to deviate from goals. Model extensions explore the robustness of our results to different timing assumptions and goal and account revision.quasi-hyperbolic discounting, reference-dependent preferences, loss aversion, self-control, mental accounting, goals

A potter's oil-spot Marx

This thesis will represent a body of work that consists of ten, six-pound bowls thrown on the wheel and glazed using a cone 6 oil-spot base glaze, cover glaze one, and cover glaze two. Oil-spot glaze decoration originated in Northern China during the Song Dynasty. The name “oil-spot” refers to the high iron content of a glaze or clay slips that when fired in oxidation, produces large and small spots of iron on the surface. My goal is to produce a variety of size spots, specific colors surrounding the spot, and designs produced using glaze application techniques such as layering and waxing. This thesis will be successful based on the ability to reproduce these goals and designs from firing to firing. Most of the research and literature available today on oil-spot glazing represents the relationship between iron and an oxidation firing atmosphere at stoneware temperatures. Those temperatures range from 2,300° to 2,400° (F) using wood as the heat source (or more recently gas). My aesthetic intention is to develop a body of knowledge about cone 6 oil-spot glazes using midrange firing temperatures (2232° F) in an electric kiln

Nature tales: a narrative journey through nature

This project emphasizes habitat and trail design, habitat restoration, and environmental education, through the lens of narrative storytelling, in order to understand the role of narratives in ecological education and park design. The project site is seventy-five acres of land, adjacent to the White River and immediately west of Potter’s Bridge Park in Noblesville, Indiana. Fifty acres of this land was restored from existing agricultural land. A narrative nature park provides a stimulating way to learn about and become immersed in nature by using environmentally based short stories, which have been written and abstracted into outdoor spaces for the park. Nature Tales examines how to create a more engaging and impactful nature park as well as how to develop effective environmental education. To better understand how to create an immersive narrative design, research was conducted on topics such as ecological issues in Hamilton County, educational trends, storytelling methods, and park design strategies. From this conceptual designs exploring how to implement the stories were created before a final masterplan design. This project resulted in the creation of a masterplan, site restoration, and site-specific design for the proposed park space. Four seasonal based short stories were developed as the base framework that the park design was based on. Four trails were then developed to follow with story motifs and educational aspects throughout. Through the narrative story and engaging educational aspects, this project examined creating meaningful connections to nature to inspire environmental stewardship.College of Architecture and PlanningThesis (B. Arch.

ベイジアン認知ランキング方法と消費者データ解析及び分子生物情報学への応用

筑波大学 (University of Tsukuba)201