Our goal in this note is to sketch a proof of a conjecture made by Kreweras [1] in a paper published in this journal. A poset on an n-set is said to be tiered with height h if every element belongs to a maximal chain with exactly h elements. It is easy to visualize these posets in terms of their Hasse diagrams. The elements can be arranged in tiers with the minimal elements in the first tier an...

With the massive increase in wireless data traffic in recent years, multi-tier wireless networks have been deployed to provide much higher capacities and coverage. However, heterogeneity of wireless networks bring new challenges for interference analysis and coordination due to spatial randomly distributed transmitters. In this paper, we present a distancedependent interference alignment (IA) a...

Defect tracking using computational intelligence methods is used to predict software readiness in this study. By comparing predicted number of faults and number of faults discovered in testing, software managers can decide whether the software are ready to be released or not. Our predictive models can predict: (i) the number of faults (defects), (ii) the amount of code changes required to corre...

Diffuse malignant peritoneal mesothelioma (MPeM) is rare and arises from peritoneal serosal surfaces. Although it shares similar histomorphology with its counterpart, malignant pleural mesothelioma, etiologies, clinical courses, and therapies differ. Nuclear grading and level of mitoses have been correlated with prognosis in malignant pleural mesothelioma with epithelioid subtype. Whether nucle...

Microservers are resource-rich sensor network nodes that perform complex tasks such as image processing, database query processing, localization, and target classification. While microservers can accomplish complex tasks, the required resources come at the cost of increased power consumption. To address this problem, a number of embedded platforms have employed a tiered architecture. Each tier ...

Shuttle-based compact systems are new automated multi-deep unit-load storage systems with lifts that promise both low operational cost and large volume flexibility. In this paper, we develop novel queuing network models to estimate the performance of both single-tier and multi-tier shuttle-based compact systems. Each tier is modeled as a multi-class semiopen queuing network, whereas the vertica...

Enterprise Database Management Systems (DBMS) often run on computers with dedicated storage systems. Their data access requests need to go through two tiers of cache, i.e., a database bufferpool and a storage server cache, before reaching the storage media, e.g., disk platters. A tremendous amount of work has been done to improve the performance of the first-tier cache, i.e., the database buffe...

Local electricity generation is one of the key challenges of technology for developing regions. Although we were driven by the need to power rural connectivity solutions, the solar controller described here makes sense for any remote ICT project with power needs up to about 100W, which includes most home solar systems, as well as single PC projects, such as kiosks. The intended use of this boar...

Current leadership election algorithms do not explicitly plan for the failure of the leader, and thus must do system wide elections each time a leader fails. To this end we propose an algorithm that removes the need for system wide elections after a leadership failure. Our technique has an initial system wide election to elect a leader, and after the leader is confirmed chooses subordinates wit...

The next generation Internet needs to support multiple diverse application contexts. In this paper, we present Internet 3.0, a diversified, multi-tier architecture for the next generation Internet. Unlike the current Internet, Internet 3.0 defines a new set of primitives that allows diverse applications to compose and optimize their specific contexts over resources belonging to multiple ownersh...