Present Position Research Articles

Paleomagnetic Data Bearing on the Origin of the Supra‐ Subduction Zone Ophiolites in Southeast Anatolia and the Progressive Closure of the Neotethys Ocean in the Eastern Mediterranean

AbstractThe Late Cretaceous supra‐subduction zone (SSZ) ophiolites in SE Anatolia form two parallel belts: the northern ophiolitic belt, which was emplaced onto the Tauride platform and a second southern belt emplaced on the Arabian platform. There are controversial hypotheses about the geometry and tectonic process of these ophiolites, which are still not well understood. Here, we test three alternative tectonic models for; (a) One single ocean which is defined by the İzmir‐Ankara‐Erzincan Ocean; (b) A southern branch of the Neotethys Ocean; (c) Two separate oceanic basins, which are the Berit Ocean and the South Neotethys Ocean. We present paleomagnetic results from 161 sites focusing on the sheeted dyke complex, cumulate gabbros, extrusive and sedimentary sequences of the Upper Cretaceous ophiolites in the SE Anatolian region. We also sampled the unconformable cover units from Middle Eocene and Miocene sedimentary rocks to distinguish emplacement related tectonic rotations from post‐emplacement tectonic rotations. Our data indicate that the southern ophiolites (Hatay ophiolite, cumulate gabbro + lava) were formed at a paleolatitude of and those of the northern ophiolites (Göksun, İspendere, Guleman ophiolite, cumulate gabbro + lava) were formed at a paleolatitude of . We hypothesize that the northern ophiolites were derived from the Ocean in a NW‐SE directed subduction zone between the Taurides and the Bitlis Pütürge massif, while the southern ophiolites, in contrast, were formed in the South Neotethys Ocean in a NNW‐SSE directed subduction zone farther northeast of the Taurides. Both the ophiolites reached their present position during Late Cretaceous to Middle Miocene, affected by rigid‐block rotations almost in counterclockwise sense.

The Limitations of Building Circular Economies in the EU Considering Present Structural Indicators: Country Cases

This paper summarises the essence of circular economy, as a desired future position of economies for building sustainability. Next it introduces indicators, which can measure the position of economies along the way to becoming circular. Based on the indicators the paper compares the situation of a few European Union (EU) countries in terms of their present development position for these indicators. In conclusion, the paper calls attention to the great differences among the examined countries, and suggests strategic actions to narrow down development gaps.

Professional development: a mixed methods study of Masters of Public Health alumni

IntroductionWe examined the perceptions of the Master of Public Health (MPH) degree graduates regarding their personal competencies, job performance and professional development using a mixed method, explanatory sequential design.MethodsA cross-sectional, self-administered questionnaire of the Haifa School of Public Health alumni who graduated between 2005 and 2022 was disseminated to 849 graduates between March and June 2022, from which 127 responded (response rate: 14.90%). This was followed by 24 in-depth interviews with alumni from the same sample (conducted between November 2022 and March 2023).ResultsThe sample included 74.8% of females with a mean age of 40.7 years, 35% of alumni agreed that the MPH degree helped them attain a promotion in their present position (in rank or salary), and 63.8% felt that the degree helped them improve their job performance and contribute to their current workplace. Most (80.3%) alumni reported not changing jobs after graduation. The interview themes revealed that the MPH contributed to their personal and professional lives, provided them with a holistic view of public health and health systems, and improved their in-depth scientific skills. The main reported barriers to professional development included missing core competencies, low salaries, and a lack of information regarding suitable jobs. Surprisingly, an MPH was not a requirement for some public health sector jobs. Alumni reported that the MPH degree contributed to improving many graduates’ careers and satisfaction levels and to build their leadership competencies in public health.DiscussionThere seems to be a lack of coordination between the academic curriculum and the jobs available for alumni, hindering better alumni professional development. Regular discussions, information sharing, and curriculum refinements between MPH program leaders and health sector leaders might help address many of the concerns of MPH degree graduates.

Tectono-stratigraphy, formation and emplacement ages of the Beyşehir-Hoyran Nappes in the south of the Sultan Dağları (Isparta, SW Türkiye)

The Beyşehir-Hoyran Nappes (BHN), in the south of Sultan Dağları, consist of ophiolite, mélange and nappe slices of different lithologies and ages belonging to the oceanic crust and related rocks, which originated from the northern Neotethys and were thrusted southwards over the Taurus Platform. These nappes, namely the Marmaris ophiolite nappe, the Gülbahar nappe and the Domuzdağ nappe, are represented by three tectonically related nappe-slices that extend as a narrow NW-SE trending belt to the south of the Sultan Dağları. The Marmaris ophiolite nappe (Upper Cretaceous) is formed by three subunits namely the Marmaris ophiolite, the Kızılcadağ mélange and the Yenicekale metamorphics. Hornblende minerals from amphibolites of the Yenicekale metamorphic rock unit yielded a 40Ar-39Ar age of 93.9±0.34 Ma (Cenomanian-Turonian boundary). Besides, late Triassic to early Jurassic ages were obtained from the deep marine sedimentary rocks of the Gülbahar nappe based on the radiolarian assemblages. Paleontological and radiometric ages obtained from this study show that the formation of the BHN should began in the Turonian and ended in the Late Maastrichtian. The nappes, on the other hand, were emplaced over southern Sultan Dağları in the early-middle Paleocene and reached their present position as a result of late Eocene movements.

A slide into obscurity? The current state of histology education in Australian and Aotearoa New Zealand medical curricula in 2022-2023.

Australia and Aotearoa New Zealand (AANZ) medical schools have been impacted by curricular changes and the introduction of virtual microscopy (VM). No survey has explicitly described the outcome of these events on histology education in AANZ. This study provides a cross-sectional overview of histology education in accredited medical schools across AANZ in 2022-2023. Responses were received from 83% (19/23) of Australian medical schools, and 50% (1/2) of medical schools in Aotearoa New Zealand. VM, either exclusively (42%) or combined with traditional microscopy (37%), emerged as the preferred mode for delivering histology education. Common instructional methods included face-to-face lectures (26%) and synchronous online live lectures (26%). A significant proportion (84%) of educators supplemented resources with virtual microscopy websites. Integration of histology education was prevalent (79%), primarily with pathology (32%) or gross anatomy (26%). On average, medical students in the region spent a maximum of 21 ± 17 h in face-to-face histology laboratories throughout their degree. Histology education was predominantly taught by academics with a PhD degree. This study also examined the similarities and differences in histology education between AANZ and the global landscape. Through this examination, the present study positions AANZ within the broader context of histology education worldwide discusses key factors impacting histology education, and advocates for action to mitigate a looming shortage of pathologists in AANZ. In light of these findings, AANZ medical schools should integrate histology and pathology, establish a core curriculum, and promote flexible teaching modalities.

From 100 MHz to 10 GHz: Unveiling the spectral evolution of the X-shaped radio galaxy in Abell 3670

Context. X-shaped radio galaxies (XRGs) are characterised by two pairs of misaligned lobes: active lobes hosting radio jets and the wings. None of the formation mechanisms proposed thus far are able to exhaustively reproduce the diverse features observed among XRGs. Emerging evidence has proposed the existence of sub-populations of XRGs forming via different processes. Aims. The brightest cluster galaxy (BCG) in Abell 3670 (A3670) is a dumbbell system hosting the XRG MRC 2011-298. The morphological and spectral properties of this interesting XRG were first characterised based on Karl G. Jansky Very Large Array (JVLA) data at 1–10 GHz. In the present work, we follow up on MRC 2011-298 with the upgraded Giant Metrewave Radio Telescope (uGMRT) at 120–800 MHz to further constrain its properties and origin. Methods. We carried out a detailed spectral analysis sampling different spatial scales. Integrated radio spectra, spectral index maps, radio colour-colour diagrams, and radiative age maps of both the active lobes and prominent wings were employed to test the origin of the source. Results. We confirm a progressive spectral steepening from the lobes to the wings. The maximum radiative age of the source is ~80 Myr, with the wings being older than the lobes by ≳30 Myr in their outermost regions. Conclusions. The observed properties are in line with an abrupt reorientation of the jets by ~90 deg from the direction of the wings to their present position. This formation mechanism is further supported by the comparison with numerical simulations in the literature, which additionally highlight the role of hydrodynamic processes in the evolution of large wings such as those of MRC 2011-298. It is plausible that the coalescence of supermassive black holes could have triggered the spin-flip of the jets. Moreover, we show that the S-shape of the radio jets is likely driven by precession with a period of P ~ 10 Myr.

Capacity building for road safety in LMICs: the need for a sustainable local knowledge and research infrastructure

Road crashes continue to be a major cause of death and serious injury for low- and middle-income countries (LMICs). At the global level, 90% of traffic fatalities occur in these countries with a dramatic daily amount of 3 260 road deaths, many of whom are children. The first UN Decade of Action for Road Safety 2011–2020 was designed to develop a massive movement towards a decrease of these numbers. This resulted in many initiatives to introduce the safe system approach in LMICs, i.e. to implement road safety management, make roads, road users, and vehicles safer, and improve post-crash health care. International organisations together with NGOs and universities prepared road safety guides and manuals, gave courses and webinars, introduced auditing and inspection systems, with the overall intention to build capacity in LMICs. Together these actions contributed to a variety of road safety developments in LMICs but the overall results were still modest. At the third Global Ministerial Conference on Road Safety in Stockholm, 2020, and in the Global Status report by the World Health Organization, 2023, the results of all efforts were presented and evaluated. Many countries made progress through road safety management and better legislation addressing risk factors such as speeding, drinking and driving, failing to use seatbelts, and poor infrastructure design. However, the reduction in road deaths strongly lagged behind the original goals. Continued implementation of programs and development of new approaches are needed to make a breakthrough, and to reach the goals of the 2nd Decade of Action, i.e. a 50% reduction in fatalities by 2030, and the same percentage reduction in injuries. The present position paper argues that despite the enormous amount of road safety information, which has been and is ‘sent’ to LMICs, and despite the quality and robustness of international organisations behind these programs, there is a shortfall in the scale of the knowledge and research infrastructure currently existing in LMICs, which is needed to ‘receive and transfer’ this knowledge. In order to develop evidence-based policy, LMICs need research programs that are able to transfer safe system principles to the local context and culture. Several literature overviews illustrate the lack of such research in LMICs, i.e. the limited number of programs at local universities and research institutes. Although recently initiatives have been taken in some countries, the implementation of such programs is urgently needed. Based on this observation we call on international organisations to establish a special program for the development of a sustainable road safety knowledge and research infrastructure in LMICs. Such structural local capacity is a prerequisite to translate international road safety knowledge into local guidelines and to develop an evidence-based road safety policy. Most importantly, this local infrastructure will give countries a national knowledge bank, thus providing them with an urgently needed sustainable road safety memory.

In Search of Women’s Identity

Abstract The aim of this article is an attempt women’s identity. uthors search for answers for this question in history, gender stereotypes and feminism. It should be remembered that the process of socialization plays a significant role in the process of identity construction. It is associated with the specific social environments in which human socialization takes place. The concept of identity raises the issue of social position as well as past and present position in the social system. Both collective and individual identities are fluid, change over time and are created throughout life.

Mandibular Contouring in Subjects With Class II or Class III Dentofacial Deformities and Treatment Needs

Facial contouring relates to hard and soft structures that make up the face. Skeletal class II and III subjects present bone structure and position changes, significantly impacting the soft tissues. This study aims to analyze the morphology of the mandible at mandibular ramus and angle level in subjects with skeletal facial deformity class II and III who are candidates for orthognathic surgery and to define implications in facial contour. A cross-sectional study used cone beam computed tomography to compare the mandibular contour (mandibular angle and ramus region) in orthognathic surgery candidates. One hundred sixty orthognathic surgery candidates were analyzed, ranging in age from 18 to 58 years (31.29 ± 11.97). Regarding the skeletal class, 95 (59.37%) were skeletal class II, and 65 (40.62%) were skeletal class III. Class II subjects had a larger antegonial notch than class III subjects. Concerning the mandibular contour, class II subjects presented less vertical distance than class III subjects, but both presented similar gonial angles. Concerning the ideas to assess the need for mandibular contouring surgery, the 2 proposals to determine the need for mandibular contouring surgery in class II and III subjects present a similar distribution. The mandibular notch is an objective element and is commonly present in subjects with a class II facial pattern; this element can be used in contour analysis to define expected facial characteristics, including the patient’s facial sex, in the decision of surgical techniques for lower facial contour augmentation or reduction.

Studies on the 2.2 Ga monzogranite and its wall rocks in western part of North Qinling Orogen: Constraints on early Precambrian tectonic attributes and evolution of the southwestern margin of Ordos Block

Precambrian continent remnants in Phanerozoic orogenic belts contain vital information about not only the Precambrian evolution history of continent remnants but also the relationship between orogenic belts and adjacent blocks. This paper presents an integrated study of petrology, geochemistry and accessory mineral chronology on a monzogranite, its wall rocks biotite-quartz schist and an amphibolite interlayer in the schist in the Kuanping Group, from the western part of the North Qinling Orogen (NQO), adjacent to the southwestern margin of the Ordos Block (OB). The results reveal that the crystallization age of the monzogranite is 2200 ± 12 Ma and the protolith of the biotite-quartz schist deposited during 526–447 Ma, and they experienced similar multistage metamorphism during 450–400 Ma. The 2.2 Ga formation age of the monzogranite is significantly older than the protolith deposition age of the biotite-quartz schist, and there is almost no ca. 2.2 Ga detrital zircon age in the schist, indicating that the monzogranite is neither an intrusive body in the Kuanping Group, nor its provenance. Considering the ca. 2.2 Ga magmatism is widely distributed in North China Craton but never found in the NQO, and the monzogranite and host schist recorded similar metamorphic ages, we proposed that the monzogranite initially formed at the southwestern margin of the North China Craton and involved into the NQO during the closure of the Kuanping sedimentary basin at early Paleozoic. Combined with existing studies, three Paleoproterozoic magmatic events of ca. 2.5 Ga, 2.2–2.0 Ga and 1.8–1.75 Ga, and one ca. 1.9–1.85 Ga metamorphic event occurred at the southwestern margin of OB. These tectono-thermal events as well as their geological setting are very similar to the basement rocks of the central-southern part of the OB. Therefore, the early Precambrian rocks at the southwestern margin of the OB should belong to the basement of the central-southern part of OB, and the late tectonic events placed them at their present position.

Using U-Pb detrital zircon systematics to constrain the architecture and provenance of the Ronda peridotites’ crustal hanging wall, S Spain

Detrital zircon geochronology is frequently used for sediment provenance analysis in orogenic belts, but it can also be applied to locate the boundary between basement and sedimentary cover in successions and tectonometamorphic units where the paleontological record is missing, and primary stratigraphic relationships have been erased by intense deformation and/or metamorphism. This is critical to differentiate metamorphic mineral associations, P-T conditions and deformational events associated with superposed orogenic cycles. In this work, detrital zircon geochronology has been applied to the Ronda peridotites’ crustal hanging wall (hinterland of the Alpine Betic Cordillera, southern Spain), apparently made up of two major tectonic units – the Jubrique unit and the Maláguide complex – separated by a major Alpine tectonic contact camouflaged in between low-grade metamorphic rocks.Our results show that pre-Paleozoic peaks (c. 650, 1000, 2000, and 2600 Ma) are common along the entire studied crustal sequence, and Paleozoic ages are only recorded in the upper part of the Jubrique unit (c. 290, 350, and 475 Ma) and in the Maláguide complex (c. 350 and 475 Ma). Thus, the Paleozoic rocks of the Maláguide complex, constituting the highest crustal unit overlying the Ronda peridotites, represent syn-to-late orogenic Variscan sediments deformed and slightly metamorphosed prior to the Alpine cycle. In contrast, the underlying Jubrique unit is made of a post-Variscan sedimentary cover deposited on a Variscan basement, with the contact between both (hidden unconformity?) located within low- to medium-grade schists. These data support the presence of a major tectonic contact between the Maláguide complex (Late Carboniferous maximum depositional ages) and the Jubrique unit (Early Permian maximum depositional ages), i.e. the Maláguide complex would have overthrust the Jubrique unit during the Alpine orogeny. These results indicate a Permian or younger exhumation/emplacement up to crustal levels of the Ronda peridotites subcontinental mantle slab.Altogether, these detrital zircon age spectra support a relatively, but not entirely local derivation of the studied crustal sequences (fragments of the Iberian Massif) and suggest some Mesozoic drifting with respect to its present position. Nonetheless, the different age distribution of the Paleozoic populations between the Jubrique (Alpujárride complex) and Maláguide samples suggests that the former deposited relatively close to other samples from the eastern-central Alpujárride complex and Nevado-Filábride complex, which, in turn, show strong similarities with the Cantabrian zone and NE Iberia (Iberian Massif). In contrast, the Maláguide samples were probably deposited close to the Ossa-Morena Zone (Iberian Massif) . Thus, Alpujárride/Nevado-Filábride and Maláguide complexes would have been juxtaposed during the Triassic-Cretaceous Neotethys rifting/drifting and/or the subsequent Alpine collisional events.

Opportunities and challenges in designing and evaluating complex multilevel, multi-stakeholder occupational health interventions in practice

ABSTRACT Extant research suggests the effectiveness of Occupational Health Psychology (OHP) interventions depends on their design in the broader organisational context. While the field recognises that pre- and posttest evaluation do not sufficiently capture the complex dynamics around OHP interventions, complex multi-level OHP interventions are still scarce in the literature. As established intervention implementation frameworks suggest, it remains difficult to address this complexity in practice. The present position paper re-evaluates lessons learned from two complex European OHP intervention projects, by applying the Integrated Process Evaluation Framework (IPEF) and related theories to bridge the gap between the theoretically recognised complexity and practical challenges. The re-evaluations emphasise that programme-multilevel theories rooted in OHP-perspectives contribute to adequately hypothesising around systemic factors and mechanisms relevant to OHP interventions. Concretely, middle range theories that outline how an intervention’s mechanisms work within a specific context to produce certain outcomes are crucial. Additionally, strategically and actively involving key stakeholders at all levels of the system and across the different intervention phases improves the embedding of OHP interventions in organisations. We elaborate on these insights with seven concrete recommendations for complex OHP intervention research.

OpenLogos in the context of custom language models for the business sector: A historical perspective on the roots of natural language generation

In the framework of Multi3Generation COST Action (CA18231), we have provided the OpenLogos tools and resources to the community with the belief that (i) they can be beneficial to Early Research Career researchers and (ii) they can also assist startup companies with limited resources in initiating endeavors to create their Natural Language Generation, Machine Translation, Paraphrasing or other Natural Language Processing systems. In this article, we explore OpenLogos capabilities in an industry case scenario. We provide historical background on the proven importance of the Logos commercial system in shaping the documentation process of a multinational. Understanding the historical significance of Machine Translation is crucial for grasping our present position in Generative Language Models and our role in the domain of Generative Artificial Intelligence. We explore how novel Custom Generative Language Models, drawing inspiration from the Logos Model, can prove beneficial across various industries worldwide.

A ‘withdrawal’ syndrome: counsel resignations in international arbitrations

Abstract The Russia–Ukraine conflict has grabbed the world’s attention as a grave breach of a state’s sovereignty. Among the several implications of the conflict, it has opened a Pandora’s box with counsel and law firms resigning from representing Russia and Russian entities in international legal proceedings including arbitrations. Counsel resignation, once completely within the decision-making of clients and counsel, has grown into an issue that requires third-party deliberations and adjudication. Though trite in law that a counsel and a client have mutual rights to end professional ties between each other, a counsel’s voluntary resignation in arbitration remains unexplored. This necessitates a global discussion as it directly encroaches upon the fundamental rule of law that every person has the right to be represented and defended. Thus, counsel resignation has been elevated to a moral quandary of professional obligations. The aim of this article is to draw a broad outline of the present legal position on counsel resignations, the conundrums surrounding it, and the scope of an arbitral tribunal’s jurisdiction to interfere in these matters.

The Genus <I>Cynodon</I> Rich. ex Pers. in India

The paper deals with the taxonomy and economic aspects of the Indian species of the genus Cynodon Rich. ex Pers. The nomenclatural history of the genus and the value of different morphological characters in its taxonomy are discussed. The genus is represented in India by three indigenous species, viz. C. dactylon (L.) Pers., C. barberi Rang. et Tad. and C. arcuatus J. S. Presl ex C. B. Presl, and one form of the species C. barberi, viz. C. barberi Rang. et Tad. f. longifolius Jain. C. plectostachyus (K. Schum.) Pilger has been introduced into India for fodder.The botanical description, vernacular names, etymology, synonymy and references to selected published literature and illustrations are given; the distribution, ecology and economic aspects are also discussed. All specimens examined during this study are cited; an index of the numbered exsiccata is provided.A conspectus of synonymous names shows the present nomenclatural position of the numerous binomials published either under the genus Cynodon, or for the Indian species of this genus.

Testing alternative tectonic models for the Permian-Pleistocene tectonic development of the Kyrenia Range, N Cyprus: Implications for E Mediterranean Tethyan palaeogeography

Three published alternative tectonic models of the Permian-Pleistocene development of the Kyrenia Range, N Cyprus are tested, supported by new field, geochemical and micropalaeontological evidence: 1. The Kyrenia Range represents the northern continental margin of the S Neotethys, close to its present relative position. The range initiated as a Permian-Cretaceous rift/passive margin, switching to a N-facing active margin during Late Cretaceous-Neogene; 2. The Range was located along the N African continental margin until the Neogene when northward subduction transferred it to the southern margin of the Eurasian plate; 3. The Range is a far-travelled allochthon that was emplaced to near its present position, probably during the Eocene.In the light of regional comparisons, especially with southern Turkey, the combined evidence mainly supports tectonic model 1. Sedimentary and palaeontological data show that the restored stratigraphy of the Kyrenia Range indicates Late Permian initial rifting and Early-Middle Triassic advanced rifting, followed by Jurassic-Early Cretaceous passive margin subsidence. Small exposures of ophiolite-related melange located between the Mesozoic carbonate platform and the overlying latest Cretaceous-Palaeogene deep-water volcanic-sedimentary succession include evidence of HP/LT metamorphism, pointing to Late Cretaceous subduction. MORB/boninites, diabase-gabbro and extensive harzburgitic serpentinite originated as a SSZ ophiolite, together with a possible high-grade metamorphic sole (garnet amphibolite) and an accretionary prism (E-MORB/OIB; metachert). Microfossil evidence indicates exhumation of the melange and the underlying platform prior to Late Maastrichtian. A mass-transport complex formed within a compression-related foredeep during the Middle Eocene. Associated southward thrusting and folding culminated in emergence and subaerial erosion, generating a major unconformity, that was followed by subaerial and then marine deltaic deposits (Late Eocene-Oligocene). Following major Late Miocene southward thrusting, uplift of the Kyrenia Range took place during the Pleistocene, related to collision of the leading edge of the North African plate (Eratosthenes Seamount) with the Eurasian (Anatolian) plate.

A Magnetic Particle Imaging Approach for Minimally Invasive Imaging and Sensing With Implantable Bioelectronic Circuits.

Minimally-invasive and biocompatible implantable bioelectronic circuits are used for long-term monitoring of physiological processes in the body. However, there is a lack of methods that can cheaply and conveniently image the device within the body while simultaneously extracting sensor information. Magnetic Particle Imaging (MPI) with zero background signal, high contrast, and high sensitivity with quantitative images is ideal for this challenge because the magnetic signal is not absorbed with increasing tissue depth and incurs no radiation dose. We show how to easily modify common implantable devices to be imaged by MPI by encapsulating and magnetically-coupling magnetic nanoparticles (SPIOs) to the device circuit. These modified implantable devices not only provide spatial information via MPI, but also couple to our handheld MPI reader to transmit sensor information by modulating harmonic signals from magnetic nanoparticles via switching or frequency-shifting with resistive or capacitive sensors. This paper provides proof-of-concept of an optimized MPI imaging technique for implantable devices to extract spatial information as well as other information transmitted by the implanted circuit (such as biosensing) via encoding in the magnetic particle spectrum. The 4D images present 3D position and a changing color tone in response to a variable biometric. Biophysical sensing via bioelectronic circuits that take advantage of the unique imaging properties of MPI may enable a wide range of minimally invasive applications in biomedicine and diagnosis.

Ocean cavity regime shift reversed West Antarctic grounding line retreat in the late Holocene

Recent geologic and modeled evidence suggests that the grounding line of the Siple Coast of the West Antarctic Ice Sheet (WAIS) retreated hundreds of kilometers beyond its present position in the middle to late Holocene and readvanced within the past 1.7 ka. This grounding line reversal has been attributed to both changing rates of isostatic rebound and regional climate change. Here, we test these two hypotheses using a proxy-informed ensemble of ice sheet model simulations with varying ocean thermal forcing, global glacioisostatic adjustment (GIA) model simulations, and coupled ice sheet-GIA simulations that consider the interactions between these processes. Our results indicate that a warm to cold ocean cavity regime shift is the most likely cause of this grounding line reversal, but that GIA influences the rate of ice sheet response to oceanic changes. This implies that the grounding line here is sensitive to future changes in sub-ice shelf ocean circulation.

Structure and age of ancient walls from the city of Nan, northern Thailand

The structure and age of remains of two ancient walls located in the city of Nan, a former part of the Lanna Kingdom in modern northern Thailand, were investigated. The remains differ in appearance with a well-preserved brick wall present at Mahawong Road (MHW), while an earthwork with a brick reinforcement core is found at Phaya Wat Temple (PWT). We employed an electrical resistivity tomography (ERT) survey and optically stimulated luminescence dating (OSL) to determine the buried structure of the earthwork at the PWT site and the production age of bricks from both locations. The ERT results reveal lateral heterogeneous resistivity domains cross-cutting the wall, which presumably relates to the construction of a dam. According to OSL dating, the PWT wall was likely built during the time of the war with Burma that ultimately resulted in a foreign occupation of Nan in the sixteenth century. This structure played a role in both flood mitigation and military defence of the city. The structure at MHW represents a city wall that was built at the end of the nineteenth century after Nan was relocated to its present position and rather reflects representative and social needs.

Sliding Mode Control for Uncertain 2-D FMII Systems Under Stochastic Scheduling.

In this article, the sliding mode control (SMC) problem is addressed for two-dimensional (2-D) systems depicted by the second Fornasini-Marchesini (FMII) model. The communication from the controller to actuators is scheduled via a stochastic protocol modeled as Markov chain, by which only one controller node is permitted to transmit its data at each instant. A compensator for other unavailable controller nodes is introduced by means of previous transmitted signals at two most adjacent points. To characterize the features of 2-D FMII systems state recursion and stochastic scheduling protocol, a sliding function associated with the states at both the present and previous positions is constructed, and a scheduling signal-dependent SMC law is designed. By constructing token- and parameter-dependent Lyapunov functionals, both the reachability of the specified sliding surface and the uniform ultimate boundedness in the mean-square sense of the closed-loop system are analyzed and the corresponding sufficient conditions are derived. Furthermore, an optimization problem is formulated to minimize the convergent bound via searching desirable sliding matrices, meanwhile, a feasible solving procedure is provided by using the differential evolution algorithm. Finally, the proposed control scheme is further demonstrated via simulation results.