Mapping the Title IX Iceberg: Sexual Harassment (Mostly) in Graduate School by College Faculty

Asistimos en los últimos años a un cambio en la forma de competir de las empresas. Frente a una visión individual y aislada de la competencia, se impone actualmente la responsabilidad colectiva en el marco de relaciones y redes de empresas. Desde esta perspectiva, la relación inter-organizacional se constituye en un instrumento de la firma para incrementar su dotación de competencias, y a esto puede contribuir de forma decisiva la implementación en la relación de mecanismos de transferencia de conocimiento. En este estudio desarrollamos, en primer lugar, una escala de medición del uso de mecanismos para transferir conocimiento en relaciones inter-organizacionales, distinguiéndose entre directivas explícitas, rutinas explícitas y rutinas tácitas. En segundo lugar, presentamos y contrastamos empíricamente un conjunto de hipótesis acerca de los efectos de uso de mecanismos de transferencia de conocimiento sobre el desempeño de la firma receptora. Los resultados indican que la utilización de mecanismos para transferencia de conocimiento contribuye a mejorar el desempeño de la firma receptora, si bien con efectos distintos según el tipo genérico de mecanismos de transferencia de conocimiento utilizado. Implicaciones para la emergente teoría de la ventaja competitiva inter-organizacional y la gestión de las empresas son también presentadas al final del artículo.(resumo em espanol)Asistimos en los últimos años a un cambio en la forma de competir de las empresas. Frente a una visión individual y aislada de la competencia, se impone actualmente la responsabilidad colectiva en el marco de relaciones y redes de empresas. Desde esta perspectiva, la relación inter-organizacional se constituye en un instrumento de la firma para incrementar su dotación de competencias, y a esto puede contribuir de forma decisiva la implementación en la relación de mecanismos de transferencia de conocimiento. En este estudio desarrollamos, en primer lugar, una escala de medición del uso de mecanismos para transferir conocimiento en relaciones inter-organizacionales, distinguiéndose entre directivas explícitas, rutinas explícitas y rutinas tácitas. En segundo lugar, presentamos y contrastamos empíricamente un conjunto de hipótesis acerca de los efectos de uso de mecanismos de transferencia de conocimiento sobre el desempeño de la firma receptora. Los resultados indican que la utilización de mecanismos para transferencia de conocimiento contribuye a mejorar el desempeño de la firma receptora, si bien con efectos distintos según el tipo genérico de mecanismos de transferencia de conocimiento utilizado. Implicaciones para la emergente teoría de la ventaja competitiva inter-organizacional y la gestión de las empresas son también presentadas al final del artículo.Last years have been marked by a radical change in how firms do compete. The traditional vision of individual competition has been substituted by the relational paradigm of competing in the context of interfirm relationships and networks. From this perspective, the firm would increase its resources endowment establishing relationships with other firms, and the use of mechanisms to transfer knowledge from one firm to the other would make a significant contribution to this. In this study we, first, develop a scale to measure the use of knowledge-transfer mechanisms in inter-organisational relationships considering three generic types: explicit directives, explicit routines, and tacit routines. Second, some hypothesis about the effects of knowledge-transfer mechanisms on the target’s firm are presented and empirically tested. Results indicate a positive effect, though with disparities among the different generic types of mechanisms analysed. Implications for the emerging theory of competitive advantage in inter-organisational relationships and managerial implications are presented at the end of the article

A Systematic Look at a Serial Problem: Sexual Harassment of Students by University Faculty

One in ten female graduate students at major research universities report being sexually harassed by a faculty member. Many universities face intense media scrutiny regarding faculty sexual harassment, and whether women are being harassed out of academic careers in scientific disciplines is currently a subject of significant public debate. However, to date, scholarship in this area is significantly constrained. Surveys cannot entirely mesh with the legal/policy definition of sexual harassment. Policymakers want to know about serial (repeat) sexual harassers, where answers provided by student surveys are least satisfactory. Strict confidentiality restrictions block most campus sexual harassment cases from public view. Taking advantage of recent advances in data availability, this Article represents the most comprehensive effort to inventory and analyze actual faculty sexual harassment cases. This review includes over 300 cases obtained from: (1) media reports; (2) federal civil rights investigations by the U.S. Departments of Education and Justice; (3) lawsuits by students alleging sexual harassment; and (4) lawsuits by tenure-track faculty fired for sexual harassment. It also situates this review within the available and most relevant social science literature on sexual harassment and violence in education and the workplace, as well as on methodological limitations of litigated case data, which tend to contain a higher concentration of high-severity cases compared to a random sample. Two key findings emerged from the data. First, contrary to popular assumptions, faculty sexual harassers are not engaged primarily in verbal behavior. Rather, most of the cases reviewed for this study (53%) involved faculty alleged to have engaged in unwelcome physical contact dominated by groping, sexual assault, and domestic abuse-like behaviors. Second, more than half (53%) of cases involved professors allegedly engaged in serial sexual harassment. Thus, this study adds to our understanding of sexual harassment in the university setting and informs a number of related policy and legal questions including academic freedom, prevention, sanctions, and the so-called “pass-the-harasser” phenomenon of serial sexual harassers relocating to new university positions

A method for handlebars ballast calculation in order to reduce vibrations transmissibility in walk behind tractors

Walk behind tractors have some advantages over other agricultural machines, such as the cheapness and the easy to use, however the driver is exposed to high level of vibrations transmitted from handles to hand-arm system and to shoulders. The vibrations induce discomfort and early fatigue to the operator. In order to control the vibration transmissibility, a ballast mass may be added to the handles. Even if the determination of the appropriate ballast mass is a critical point in the handle design. The aim of this research was to study the influence of the handle mass modification, on the dynamic structure behaviour. Modal frequencies and subsequent transmissibility calculated by using an analytical approach and a finite elements model, were compared. A good agreement between the results obtained by the two methods was found (average percentage difference calculated on natural frequencies equal to 5.8\ub13.8%). Power tillers are made generally by small or medium-small size manufacturers that have difficulties in dealing with finite element codes or modal analysis techniques. As a consequence, the proposed analytical method could be used to find the optimal ballast mass in a simple and economic way, without experimental tests or complex finite element codes. A specific and very simple software or spreadsheet, developed on the base of the analytical method here discussed, could effectively to help the manufacturers in the handlebar design phase. The choice of the correct elastic mount, the dimensioning of the guide members and the ballast mass could be considerably simplified

Plausible fluorescent Ly-alpha emitters around the z=3.1 QSO0420-388

We report the results of a survey for fluorescent Ly-alpha emission carried out in the field surrounding the z=3.1 quasar QSO0420-388 using the FORS2 instrument on the VLT. We first review the properties expected for fluorescent Ly-alpha emitters, compared with those of other non-fluorescent Ly-alpha emitters. Our observational search detected 13 Ly-alpha sources sparsely sampling a volume of ~14000 comoving Mpc^3 around the quasar. The properties of these in terms of i) the line equivalent width, ii) the line profile and iii) the value of the surface brightness related to the distance from the quasar, all suggest that several of these may be plausibly fluorescent. Moreover, their number is in good agreement with the expectation from theoretical models. One of the best candidates for fluorescence is sufficiently far behind QSO0420-388 that it would imply that the quasar has been active for (at least) ~60 Myrs. Further studies on such objects will give information about proto-galactic clouds and on the radiative history (and beaming) of the high-redshift quasars.Comment: 10 pages, 4 figures.Update to match the version published on ApJ 657, 135, 2007 March

MUSE-inspired view of the quasar Q2059-360, its Lyman alpha blob, and its neighborhood

The radio-quiet quasar Q2059-360 at redshift $z=3.08$ is known to be close to a small Lyman $\alpha$ blob (LAB) and to be absorbed by a proximate damped Ly$\alpha$ (PDLA) system. Here, we present the Multi Unit Spectroscopic Explorer (MUSE) integral field spectroscopy follow-up of this quasi-stellar object (QSO). Our primary goal is to characterize this LAB in detail by mapping it both spatially and spectrally using the Ly$\alpha$ line, and by looking for high-ionization lines to constrain the emission mechanism. Combining the high sensitivity of the MUSE integral field spectrograph mounted on the Yepun telescope at ESO-VLT with the natural coronagraph provided by the PDLA, we map the LAB down to the QSO position, after robust subtraction of QSO light in the spectral domain. In addition to confirming earlier results for the small bright component of the LAB, we unveil a faint filamentary emission protruding to the south over about 80 pkpc (physical kpc); this results in a total size of about 120 pkpc. We derive the velocity field of the LAB (assuming no transfer effects) and map the Ly$\alpha$ line width. Upper limits are set to the flux of the N V $\lambda 1238-1242$, C IV $\lambda 1548-1551$, He II $\lambda 1640$, and C III] $\lambda 1548-1551$ lines. We have discovered two probable Ly$\alpha$ emitters at the same redshift as the LAB and at projected distances of 265 kpc and 207 kpc from the QSO; their Ly$\alpha$ luminosities might well be enhanced by the QSO radiation. We also find an emission line galaxy at $z=0.33$ near the line of sight to the QSO. This LAB shares the same general characteristics as the 17 others surrounding radio-quiet QSOs presented previously. However, there are indications that it may be centered on the PDLA galaxy rather than on the QSO.Comment: Accepted for publication in Astronomy & Astrophysics; 16 pages, 19 figure

Fluorescent Ly-alpha emission from the high-redshift intergalactic medium

We combine a high-resolution hydro-simulation of the LambdaCDM cosmology with two radiative transfer schemes (for continuum and line radiation) to predict the properties, spectra and spatial distribution of fluorescent Ly-alpha emission at z~3. We focus on line radiation produced by recombinations in the dense intergalactic medium ionized by UV photons. In particular, we consider both a uniform background and the case where gas clouds are illuminated by a nearby quasar. We find that the emission from optically thick regions is substantially less than predicted from the widely used static, plane-parallel model. The effects induced by a realistic velocity field and by the complex geometric structure of the emitting regions are discussed in detail. We make predictions for the expected brightness and size distributions of the fluorescent sources.Our results account for recent null detections and can be used to plan new observational campaigns both in the field (to measure the intensity of the diffuse UV background) and in the proximity of bright quasars (to understand the origin of high colum-density absorbers).Comment: 15 pages, 12 figures, accepted for publication in Ap

Probing the end of reionization with the near zones of z ≳ 6 QSOs

QSO near zones are an important probe of the ionization state of the intergalactic medium (IGM) at z ∼ 6-7, at the end of reionization. We present here high-resolution cosmological 3D radiative transfer simulations of QSO environments for a wide range of host halo masses, 1010-12.5 M⊙. Our simulated near zones reproduce both the overall decrease of observed near-zone sizes at 6 7 QSOs will provide important constraints on the evolution of the neutral hydrogen fraction and thus on how late reionization end