Unresolved States Research Articles

Disabled Children, Maltreatment and Attachment

Two bodies of literature on children with disabilities are identified and described. One recognizes an association between disability and maltreatment. The other finds an association between children with a disability and insecure attachments. The present paper seeks a theoretical integration between these two research traditions. The model generated examines the dynamics that affect a child with a disability’s attachment classification and risk of being maltreated in terms of a transaction between both parental and child factors. In the case of children with certain types of disability, unresolved parental states of mind with respect to attachment are seen as a risk factor for maltreatment. Implications for prevention, support and treatment are considered.

Positron annihilation lifetime studies of SrTiO3crystal and ceramic materials

Positron annihilation lifetime spectroscopy (PALS) measurements on high density ceramic SrTiO 3 are reported and compared to measurements on single crystal substrates. PALS has specific sensitivity to vacancy-related defects as these are traps for positrons; the lifetime of vacancy trapped positrons is increased with respect to those that annihilate from the perfect lattice. Positrons are found to be saturation trapped at vacancy defects in the ceramic samples, with over 90% annihilating with a lifetime of ∼175 ps, and the remainder annihilating with a lifetime in the 270-3 10 ps range consistent with A-site or larger open volume sites. The dominant component at ∼175 ps may represent a single vacancy trap, or it may be the average of one or more unresolved lifetime states.

Expanding the concept of unresolved mental states: Hostile/Helpless states of mind on the Adult Attachment Interview are associated with disrupted mother–infant communication and infant disorganization

In a recent meta-analysis, only 53% of disorganized infants were predicted by parental Unresolved states of mind on the Adult Attachment Interview (AAI). The goal of this study was to identify additional predictors of infant disorganization on the AAI by developing and validating an interview-wide coding system for Hostile/Helpless (H/H) parental states of mind with respect to attachment. Maternal AAls were collected from 45 low-income mothers with high rates of childhood trauma when their children were age 7; Strange Situation assessments had been collected at 18 months of age. AAIs were independently coded using both the Main and Goldwyn coding system and newly developed codes for H/H states of mind. Results indicated that the H/H coding system displayed discriminant validity in that it did not overlap substantially with the Unresolved, Cannot Classify, or Fearfully Preoccupied by Traumatic Events categories in the Main and Goldwyn coding system. Second, H/H states of mind accounted for variance in disorganized infant behavior not associated with the Unresolved classification. Third, H/H states of mind were significantly related to maternal disrupted affective communication as coded by the Atypical Maternal Behavior Instrument for Assessment and Classification coding system, and maternal disrupted communication mediated the relations between H/H states of mind and infant disorganization.

Electronic properties of (2 x 1) and c(4 x 2) domains on Ge(001) studied by scanning tunneling spectroscopy.

The surface electronic structure of Ge(001) was studied by scanning tunneling spectroscopy. The measured surface densities of states unequivocally reveal the presence of a metallic state on the (2 x 1) domains, which is absent on the c(4 x 2) domains. This metallic state, so far observed only in integral measurements, is attributed to the flip-flopping dimers that constitute the (2 x 1) domains. Our data also reveal a set of previously unresolved surface states, in perfect agreement with published theoretical predictions.

L dependence of dielectronic recombination from a continuum of finite bandwidth in a static electric field

It should be possible to separate experimentally the contributions to dielectronic recombination (DR) of energetically unresolved intermediate autoionizing Rydberg nl states using electric fields. This notion is based on two essential ideas. First, electric fields enhance the DR rate by Stark-mixing low-l states with high autoionization rates with high-l states with low autoionization rates. Second, the field at which an l state becomes Stark mixed is determined by its quantum defect, a known function of l. Consequently, the electric-field dependence of the DR rate should reflect the l dependence of the autoionization rates and thus the contributions of the zero-field nl states to the DR rate. This notion cannot be tested experimentally by examining true DR. However, it can be tested by studying DR from a continuum of finite bandwidth (CFB), for in this case the intermediate Rydberg nl states are restricted to a single value of l. Specifically, we have examined the electric-field dependence of DR from two CFB's, the Ba 6p{sub 3/2}11d and 6p{sub 3/2}8g states. In these two cases the intermediate autoionizing Rydberg states are restricted to the Ba 6p{sub 1/2}nd and 6p{sub 1/2}ng states (l=2 and 4), which have quantum defects of 0.25 and 0.02, respectively.more » For the same n they are Stark mixed at fields differing by an order of magnitude. We show experimentally that enhancement of the DR rate occurs at fields differing by a factor of 10 for nd and ng states of the same n, as expected, confirming that the field dependence of DR can be used to extract information about the contributions of energetically unresolved l states to the zero-field DR rate.« less

Factors associated with the unresolved classification of the Adult Attachment Interview in women who have suffered stillbirth.

The "unresolved" state of mind with respect to loss or trauma as assessed in the Adult Attachment Interview is common in clinical and forensic groups, as well as in mothers whose infants are classified as disorganized in their attachment relationship to them. However, questions remain about what the unresolved state represents and what factors predict the unresolved state. This case controlled study reports on 64 women who had suffered stillbirth and who were pregnant with their next child. The study explores attachment, psychiatric, and social factors associated with the unresolved state or higher unresolved scores with respect to stillbirth. Women who had experienced stillbirth were more likely to be unresolved than control women. Although a similar number of stillbirth and control women had experienced childhood trauma, only women who had experienced stillbirth were unresolved with respect to this trauma, suggesting the unresolved state may be evoked or reevoked by subsequent traumatic loss. Higher unresolved scores in relation to stillbirth were predicted by childhood trauma, poor support from family after the loss, and having a funeral for the infant. The results are discussed in terms of the woman's sense of being causal in the loss.

Mechanisms of inflammation: the good, the bad and the ugly.

To the general public, the term, inflammation, is associated with pain, swelling, fever and a general sense of unease ranging from mere nuisance to debilitating illness. Under normal circumstances, the process of inflammation is actually a protective response designed to ward off invasion of the person by pathogens such as bacteria, viruses and/or parasites. The immune system of higher mammals (e.g. humans) is comprised of two distinct, arms, termed the innate and the adaptive systems. While these two components play unique roles in controlling pathogens, each relies, in some part, upon the effective function of the other in order to efficiently eliminate invading microorganisms. There are however situations in which this complex system is unable to properly function leading to unresolved infections and/or chronic states of inflammation. This review will summarize the basic mechanisms involved in the inflammatory process as well as discuss some of the key mediators and modulators of this process.

Childhood experiences of trauma and loss have different relations to maternal unresolved and Hostile-Helpless states of mind on the AAI

This study of 45 high-risk mothers and infants examined the current indirect effects model of intergenerational transmission of disorganized attachment, which posits that maternal childhood experiences of loss or trauma contribute to maternal states of mind on the AAI which in turn contribute to infant disorganization. The severity of experiences of both abuse and loss were examined in relation to both Unresolved states of mind and Hostile-Helpless states of mind on the AAI and to infant disorganization at both 12 and 18 months. Neither the experience of parental death in childhood nor the severity of abuse in childhood was related to Unresolved states of mind on the AAI. Instead, an Unresolved state of mind and the experience of parental death contributed independently and additively to the prediction of infant disorganization at 12 months. At 18 months, an indirect effects model was supported in relation to Hostile-Helpless but not Unresolved states of mind, in that severity of trauma had no direct relation to infant disorganization but severity of trauma was related to Hostile-Helpless states of mind which in turn predicted infant disorganization. Unresolved states of mind and experiences of parental loss did not add to prediction of disorganization at 18 months. The findings suggest that the influence of maternal trauma on infant attachment may become more prominent at 18 months as the infant makes the transition to toddlerhood. The results also suggest that a more complex etiologic model may be needed of the aspects of early experience that contribute to adult Unresolved states of mind on the AAI.

Adult Attachment Interview and Psychoanalytic Perspective: A Single Case Study

In this single case study we present a female patient diagnosed with a narcissistic personality disorder and a borderline organization. The interplay between attachment and psychoanalytic perspective will be focused. The analyst describes his impressions of the initial interview with the patient and essential steps during treatment. The patient was interviewed with the Adult Attachment Interview and classified as “insecure preoccupied” with an “unresolved state of mind” concerning loss and abuse. The analyst was asked to comment the AAI's essential characteristics of this patient. We discuss converging and diverging aspects of clinical and attachment interpretation in this single case.

Clinical and functional assessment after anticoagulant therapy of acute deep vein thrombosis involving the lower limb.

We assessed the clinical status after anticoagulant therapy in acute deep vein thrombosis (DVT) involving the lower limbs. Between 1994 and 2001, 139 patients suffering from acute DVT were treated with heparin therapy followed by oral anticoagulant therapy. The coagulation factor assay was done prior to any anticoagulation therapy. The duplex scan was checked serially. The mean follow-up periods was 32 +/- 19 months. There were 32 (23.0%)cases of protein C deficiency, 12 (8.6%) cases of protein S deficiency, 13 (9.4%) cases of AT-III deficiency and 11 (7.9%) cases of abnormal plasminogen level. Fourteen cases had coagulation factor abnormalities within the family. The initial lung scan showed 29 (20.9%) cases with high, 13 (9.4%) cases with intermediate and 70 (50.4%) cases with a low probability of pulmonary embolism (PE) developing. During the follow-up periods, there were 3 cases of non-fatal PE documented with chest CT scan. The patients were divided according to the extent of the thrombus; Group I (38 cases) was limited to the infrainguinal deep vein, Group II (70 cases) extended to the iliac vein and Group III (9 cases) extended to the vena cava. Partial lysis occurred in 20/35/3 (52.6/50.0/33.3%) cases and no change in 10/24/6 (26.3/ 34.3/ 66.7%) cases in Groups I/ II/ III, respectively. Deep vein valvular reflux occurred in 15/25/5 (39.5/35.7/55.6%) cases in Groups I/ II/ III, respectively. With anticoagulation therapy, most of the thrombi remained in unresolved states and there was a high rate of deep vein valvular reflux. However, there was no serious complications which affected the patients' quality of life.

Your feelings or mine? Projective identification in a context of counselling families living with multiple sclerosis

Melanie Klein's concept of projective identification is now in common use by counsellors and psychotherapists. Julia Segal describes her own hypothesis about the way it works as well as her use of it in her practice, working as a counsellor for people with multiple sclerosis, members of their families and professionals working with them. When a person cannot bear to feel an emotional state they can evoke the feeling in someone else, not only a therapist or counsellor but also others within the family. Segal describes the way powerful emotions can be evoked in the counsellor; in particular the feeling that a certain idea cannot be shared with a client. She also describes working with clients who are on the receiving end of such projected feelings, sometimes evoked by illness within the family. She also points out that unresolved emotional states suffered in childhood can leave adults unable to bear certain feelings. If the feelings threaten to re-emerge in adulthood, perhaps triggered by their own children reaching a certain age, parents sometimes attempt to rid themselves of the emotional state by projective identification and in the process, evoke a version of the feelings in their own children. This may, for example, exert pressure on parents to divorce just as their own children reach the age they were when they themselves lost a parent.

Gamow-Teller transitions from 58Ni to discrete states of 58Cu

Under the assumption that isospin is a good quantum number, symmetry is expected for the transitions from the ground states of T = 1, T z = ±1 nuclei to the common excited states of the T z = 0 nucleus situated between the two nuclei. The symmetry can be studied by comparing the strengths of Gamow-Teller (GT) transitions obtained from a (p, n)-type charge-exchange reaction on a target nucleus with T z = 1 with those from the β-decay of the T z = - 1 nucleus. The A = 58 system is the heaviest for which such a comparison is possible. As a part of the symmetry study, we measured the GT transitions from 58Ni (T z = 1) to 58Cu (T z = 0) by using the zero-degree (3 He, t) reaction at 150 MeV/nucleon. With the achieved resolution of 50 keV, many hitherto unresolved GT states have been identified. The GT transition strengths were obtained for states up to 8 MeV excitation, i.e., near to the Q window limitation ( Q EC = 9.37 MeV) of the β-decay from 58Zn (T z = - 1) to 58Cu. The strength distribution is compared with that from shell-model calculations.

Inhomogeneous broadening in quantum dots with ternary aluminum alloys

We study how the optical properties of InAs self-assembled quantum dots (QDs) grown on GaAs substrate are affected when using AlGaAs barriers to increase the carrier confinement. The inhomogeneous broadening of the QD ensemble is found to increase when ternary aluminum alloys are used next to or within the QDs. By growing thin GaAs spacers to separate the QDs from the AlGaAs barriers, we obtain QD ensembles which exhibit little photoluminescence quenching and well-defined excited states up to room temperature. Postgrowth rapid thermal annealing is then used to intermix these InAs/GaAs/AlGaAs QDs and diffuse the Al towards the QDs. In contrast with QDs having thick binary GaAs barriers, the inhomogeneous broadening of QDs with nearby AlGaAs barriers is not decreased with intermixing, leading to unresolved excited state peaks when the interdiffusion length becomes comparable to the GaAs spacer thickness.

Observation of polarization in bottomonium production at square root of s = 38.8 GeV.

We present a measurement of the polarization observed for bottomonium states produced in p-Cu collisions at square root of s = 38.8 GeV. The angular distribution of the decay dimuons of the Upsilon(1S) state shows no polarization at small values of the fractional longitudinal momentum x(F) and transverse momentum p(T) but significant positive transverse production polarization for either p(T)>1.8 GeV/c or for x(F)>0.35. The Upsilon(2S+3S) (unresolved) states show a large transverse production polarization at all values of x(F) and p(T) measured. These observations challenge NRQCD calculations of the polarization expected in the hadronic production of bottomonium states.

On the way from thermal multifragmentation to dynamical disintegration

The strong-interaction shifts ϵ and broadenings Γ of the 2p levels in antiprotonic hydrogen and deuterium have been measured for the first time with a crystal spectrometer. In hydrogen, the 23P0 hyperfine state could be resolved from the three close-lying states 23P2, 21P1, and 23P1. The hadronic shift was determined to be ϵ23P0=+139±28 meV (attractive). The value found for Γ23P0=120±25 meV is much larger than the spin-averaged 2p-level broadening Γ̄bal2p as determined from earlier experiments measuring the intensity balance. The average shift of the three unresolved states is consistent with zero and a mean broadening of Γ̄2(3P2,1P1,3P1)=38±9 meV was measured. In deuterium, the spin-averaged hadronic shift and broadening were found to be ϵ̄2p=−243±26 meV (repulsive) and Γ̄2p=489±30 meV.

Balmer α transitions in antiprotonic hydrogen and deuterium

The strong-interaction shifts ϵ and broadenings Γ of the 2p levels in antiprotonic hydrogen and deuterium have been measured for the first time with a crystal spectrometer. In hydrogen, the 2 3 P 0 hyperfine state could be resolved from the three close-lying states 2 3 P 2 , 2 1 P 1 , and 2 3 P 1 . The hadronic shift was determined to be ϵ 2 3 P 0 =+139±28 meV (attractive). The value found for Γ 2 3 P 0 =120±25 meV is much larger than the spin-averaged 2p-level broadening Γ ̄ bal 2p as determined from earlier experiments measuring the intensity balance. The average shift of the three unresolved states is consistent with zero and a mean broadening of Γ ̄ 2( 3P 2, 1P 1, 3P 1) =38±9 meV was measured. In deuterium, the spin-averaged hadronic shift and broadening were found to be ϵ ̄ 2p =−243±26 meV (repulsive) and Γ ̄ 2p =489±30 meV.

Frightening maternal behaviour, unresolved loss, and disorganized infant attachment: A pilot-study

We investigated frightening (threatening, frightened, or dissociated) maternal behaviour as the proposed explanation of the association between maternal unresolved state of mind regarding loss and disorganized infant attachment (Main and Hesse, 1990). We established frightening maternal behaviour can be identified in home observations, even in a lowrisk sample (n = 12), and was predicted at the trend level by unresolved maternal loss.

Designing True-up Mechanisms to Recover Transition Costs

Cost-recovery and true-up mechanisms may be the last unresolved transition-costs dilemma facing state policymakers. Two mechanisms that allow for a 100 percent adjustment for changes in exogenous factors are a good place to start.

Chipping away at the mountain: Disabled students' experience of higher education

Within the context of marketisation and managerialism, this article discusses the effects of recent attempts to dismantle the barriers encountered by disabled students in higher education. Exploring statistics compiled by the Scottish Higher Education Funding Council and drawing on recent Scottish small-scale studies (Baron et al, 1996; Brown et al, 1997; Hall & Tinklin, 1998), it is suggested that although disabled students now have a greater presence in higher education, nonetheless many barriers to full participation remain, and indeed may be reinforced by some initiatives intended to widen access. The article supports Clarke & Newman's contention (1997) that an effect of new managerialism is to sidestep important social, cultural and political problems, leaving these in an unresolved state to be tackled by less powerful people when they encounter them in practice. The barriers met by disabled students are structural in nature, but in the dominant liberal equal opportunities approach means that these are seen by policy makers in individualised and medical terms and therefore the solutions proposed are often inadequate. Initiatives to widen access, rooted in the liberal belief that change will come about through appealing to individual goodwill, have failed to take into account the intensification of labour within higher education and have therefore achieved only limited success.

Time-Resolved Coherent Photoelectron Spectroscopy of Quantized Electronic States on Metal Surfaces

Time-resolved two-photon photoemission in combination with the coherent excitation of several quantum states was used to study the ultrafast electron dynamics of image-potential states on metal surfaces. For a (100) surface of copper, the spectroscopy of quantum beats made previously unresolved high-order states (quantum number n ≥ 4) experimentally accessible. By exciting electrons close to the vacuum level, electron wave packets could be created and detected that described the quasi-classical periodic motion of weakly bound electrons. They traveled more than 200 Å away from the surface and oscillated back and forth with a period of 800 femtoseconds.