The secretary problem for selecting one item so as to minimize its expected rank, based on observing the relative ranks only, is revisited. A simple suboptimal rule, which performs almost as well as the optimal rule, is given. The rule stops with the smallest i such that Ri ≤ ic/(n + 1 − i) for a given constant c, where Ri is the relative rank of the i observation, and n is the total number of ...

The most important open conjecture in the context of the matroid secretary problem claims the existence of an O(1)-competitive algorithm applicable to any matroid. Whereas this conjecture remains open, modified forms of it have been shown to be true, when assuming that the assignment of weights to the secretaries is not adversarial but uniformly at random [23, 20]. However, so far, no variant o...

At present, overseas and domestic eco-security early warning research is in the exploratory stage. This paper uses Kizilsu Kirghiz Autonomous Prefecture as the research object and constructs an evaluation index system based on the pressure-state-response (P-S-R) conceptual model. This study analyzes eco-security early warning in the study area using the granger causality test model, the entropy...

The VA Secretary occupies probably the most thankless job in Washington. On the one hand the Secretary is expected to seamlessly provide the plethora of benefits and services a grateful nation offers veterans who have sacrificed body and mind in military service, and to those who need transition services. On the other, the Secretary must strictly obey all laws and follow all Administration poli...

, 2 HOBBY LOBBY STORES, INC.; Mardel, Inc.; David Green; Barbara Green; Mart Green; Steve Green; Darsee Lett, Plaintiffs–Appellants, v. Kathleen SEBELIUS, in her official capacity as Secretary of the United States Department of Health and Human Services; United States Department of Health and Human Services; Hilda Solis, Secretary of the United States Department of Labor; United States Departme...

With the increasing awareness of sustainability, eco-design has been an important trend in the fashion industry. Many fashion brands such as Nike, Adidas, and The North Face have developed sustainable fashion by incorporating eco-design elements. Eco-design is an important part of sustainable supply chains. In this paper, we conducted a product line analysis of eco-designed products from a famo...

This paper investigates the potential for eco-certification to improve livelihoods and conserve biodiversity in tropical countries, using the example of a traditional rubber agroforestry practice in Indonesia. Eco-certification has the potential to allow farmers to generate revenue streams by marketing environmental benefits of their practices. However, in the years since eco-certification firs...

This paper presents a novel approach for object detection using a feature construction method called Evolution-COnstructed (ECO) features. Most other object recognition approaches rely on human experts to construct features. ECO features are automatically constructed by uniquely employing a standard genetic algorithm to discover series of transforms that are highly discriminative. Using ECO fea...

The Chinese Loess Plateau is suffering from severe soil erosion. The eco-environmental changes of the plateau have attracted considerable attentions both from scientists and local governments. Aiming at the regional features of eco-environment and main environmental problems of Linfen City, the synthetic evaluation index system including Organism Abundance index, Vegetation Cover index, Water D...

This problem is a generalization of the classical secretary problem in which numbers arrive on-line in random order and the goal is to select a number as large as possible. In the matroid secretary problem, there is a matroid with ground set E and independent sets I, and a weight function assigning a weight w(i) to each element i ∈ E. We wish to design an algorithm which the matroid (E, I) is g...