Trust and Experience in Online Auctions

This paper aims to shed light on the complexities and difficulties in predicting the effects of trust and the experience of online auction participants on bid levels in online auctions. To provide some insights into learning by bidders, a field study was conducted first to examine auction and bidder characteristics from eBay auctions of rare coins. We proposed that such learning is partly because of institutional-based trust. Data were then gathered from 453 participants in an online experiment and survey, and a structural equation model was used to analyze the results. This paper reveals that experience has a nonmonotonic effect on the levels of online auction bids. Contrary to previous research on traditional auctions, as online auction bidders gain more experience, their level of institutional-based trust increases and leads to higher bid levels. Data also show that both a bidder’s selling and bidding experiences increase bid levels, with the selling experience having a somewhat stronger effect. This paper offers an in-depth study that examines the effects of experience and learning and bid levels in online auctions. We postulate this learning is because of institutional-based trust. Although personal trust in sellers has received a significant amount of research attention, this paper addresses an important gap in the literature by focusing on institutional-based trust

On the energy momentum dispersion in the lattice regularization

For a free scalar boson field and for U(1) gauge theory finite volume (infrared) and other corrections to the energy-momentum dispersion in the lattice regularization are investigated calculating energy eigenstates from the fall off behavior of two-point correlation functions. For small lattices the squared dispersion energy defined by $E_{\rm dis}^2=E_{\vec{k}}^2-E_0^2-4\sum_{i=1}^{d-1}\sin(k_i/2)^2$ is in both cases negative ($d$ is the Euclidean space-time dimension and $E_{\vec{k}}$ the energy of momentum $\vec{k}$ eigenstates). Observation of $E_{\rm dis}^2=0$ has been an accepted method to demonstrate the existence of a massless photon ($E_0=0$) in 4D lattice gauge theory, which we supplement here by a study of its finite size corrections. A surprise from the lattice regularization of the free field is that infrared corrections do {\it not} eliminate a difference between the groundstate energy $E_0$ and the mass parameter $M$ of the free scalar lattice action. Instead, the relation $E_0=\cosh^{-1} (1+M^2/2)$ is derived independently of the spatial lattice size.Comment: 9 pages, 2 figures. Parts of the paper have been rewritten and expanded to clarify the result

Perubahan pemanfaatan dan pengelolaan sumber daya alam di daerah penyangga

Usaha pembangunan nasional yang makin ditingkatkan adalah suatu usaha yang berencana untuk meningkatkan taraf kesejahte raan hidup dan kehidupan warga masyarakat Indonesia . Usaha pembangunan semacam ini pada dasarnya bukanlah usaha yang mudah diterapkan. Berbagai persoalan dan kesulitan yang muncul dan dihadapi dalam penerapan pembangunan ini, antara lain berkaitan erat dengan kemajemukan masyarakat di Indonesia. Kemajemukan masyarakat Indonesia yang antara lain ditandai oleh keanekaragaman suku bangsa dengan berbagai budayanya merupakan kekayaan nasional yang perlu mendapat perhatian khusus. Kekayaan ini mencakup wujud-wujud kebudayaan yang didukung oleh masyarakatnya. Setiap suku bangsa memiliki nilai-nilai budaya khas yang membedakanjati diri mereka dari suku bangsa lain . Perbedaan ini akan nyata dalam gagasan-gagasan dengan hasil-hasil karya yang akhirnya dituangkan lewat interaksi antar individu. clan antarkelompok

How nascent occupations construct a mandate: the case of service designers' ethos

In this paper, we study the way that nascent occupations constructing an occupational mandate invoke not only skills and expertise or a new technology to distinguish themselves from other occupations, but also their values. We studied service design, an emerging occupation whose practitioners aim to understand customers and help organizations develop new or improved services and customer experiences, translate those into feasible solutions, and implement them. Practitioners enacted their values in their daily work activities through a set of material practices, such as shadowing customers or front-line staff, conducting interviews in the service context, or creating “journey maps” of a service user’s experience. The role of values in the construction of an occupational mandate is particularly salient for occupations such as service design, which cannot solely rely on skills and technical expertise as sources of differentiation. We show how service designers differentiated themselves from other competing occupations by highlighting how their values make their work practices unique. Both values and work practices, what service designers call their ethos, were essential to enable service designers to define the proper conduct and modes of thinking characteristic of their occupational mandate

Trends in the abundance and distribution of anchovy and sardine on the South African continental shelf in the 1990s, deduced from acoustic surveys

The South African pelagic resources have been monitored acoustically since 1983. The results of these surveys are currently used to determine catch limits for anchovy Engraulis capensis and sardine Sardinops sagax. Twomain surveys are conducted annually, in winter to determine the strength of the year’s recruitment and in summer to estimate the size of the adult stock. The results of the surveys conducted between 1990 and 1997 are presented and discussed in the context of the time-series of stock abundance. Distribution patterns, size structure and biomass levels are related to general trends in the life-history strategies of anchovy and sardine, as well as the major environmental features in the southern Benguela in the 1990s. The biomass of adult anchovy appears to be driven largely by the strength of the early recruitment, corresponding to fish spawned in the first half of the summer spawning season. The biomass of adult sardine, however, is better explained on the basis of the biomass of 2-year-old and older fish in the previous year’s survey. Anchovy tend to move east with age, whereassardine appear to move both north, along the south African west coast, and east with increasing age

Adults Using Long Term Services and Supports: Population and Service Use Trends in Maine, SFY 2016

All of us have likely either used, will use, or know someone who uses long term services and support (LTSS). They enable us to live with dignity and as much independence as possible and offer us the opportunity to remain involved and productive in our communities. The need for LTSS can arise suddenly after injury or illness or a life-long condition. But how ever the need arises, the impact is the same—services such as personal care, work support, home health care, and residential care provide not just for individual health and comfort, but also for interaction, inclusion, and engagement with each other. While many of us have provided help with daily living for our family and friends or have relied on our own family ourselves, there are times when formal support from professional caregivers is necessary. Private health insurance and Medicare do not typically cover extended LTSS, leaving payment for services up to the individual. Medicaid, known as MaineCare in this state, on the other hand, does cover this type of care for adults meeting financial and medical eligibility requirements. This chartbook describes the MaineCare LTSS available to adult members, the number of members who used them in state fiscal year 2016, and the amount of spending on these services as a proportion of all spending on adult MaineCare members. In addition, this book provides demographic trends regarding Maine’s older adults; Census estimates on poverty, housing, and employment among Maine’s adults with disabilities; characteristics of Maine adults using nursing, residential care, or home and community based services; and an analysis of MaineCare spending and service utilization among adults using different types of LTSS. The information on the services available, the trends in use, and the dollars spent on them presents a snapshot of the LTSS system in State fiscal year 2016, and it can help us plan for the system we want for ourselves and our family and friends in the future

Iteratively reweighted compressive sensing based algorithm for spectrum cartography in cognitive radio networks

© 2014 IEEE. Spectrum cartography is the process of constructing a map showing Radio Frequency signal strength over a finite geographical area. In our previous work we formulated spectrum cartography as a compressive sensing problem and we illustrated how cartography can be used in the context of discovering spectrum holes in space that can be exploited locally in cognitive radio networks. This paper investigates the performance of compressive sensing based approach to cartography in a fading environment where realtime channel estimation is not feasible. To accommodate for lack of channel information we take an iterative approach. We extend the well-known iteratively reweighted ℓ1 minimisation approach by exploiting spatial correlation between two points in space. We evaluate the performance in an urban environment where Rayleigh fading is prominent. Our numerical results show a significant improvement in the probability of accurately making a spectrum sensing decision, in comparison to the well-known weighted approach and the traditional compressive sensing based method

Excitonic ferromagnetism in the hexaborides

A ferromagnet with a small spontaneous moment but with a high Curie temperature can be obtained by doping an excitonic insulator made from a spin triplet exciton condensate. Such a condensate can occur in a semimetal with a small overlap or a semiconductor with a small bandgap. We propose that it is responsible for the unexpected ferromagnetism in the doped hexaboride material Ca_{1-x}La_xB_6.Comment: 4 pages, 3 figure

High-temperature magnetic anomaly in the Kitaev hyperhoneycomb compound β-Li2IrO3

We report the existence of a high-temperature magnetic anomaly in the three-dimensional Kitaev candidate material, β-Li2IrO3. Signatures of the anomaly appear in magnetization, heat capacity, and muon spin relaxation measurements. The onset coincides with a reordering of the principal axes of magnetization, which is thought to be connected to the onset of Kitaev-like correlations in the system. The anomaly also shows magnetic hysteresis with a spatially anisotropic magnitude that follows the spin-anisotropic exchange anisotropy of the underlying Kitaev Hamiltonian. We discuss possible scenarios for a bulk and impurity origin